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export_fbx_bin.py
Bastien Montagne authored
So, it appears some importers (at least UE4) do not use UnitScaleFactor defined by FBX, which is assumed to be a way to say 'this FBX file uses units n times default FBX unit' (default FBX unit being centimeter - afaik, at least I saw some FBX from Max with a UnitScaleFactor of 2.54 - inches). Hence, we have to add yet another stupid option to apply that 'unit scaling' to objects instead (as part of global scaling)... Hurra.
export_fbx_bin.py 140.31 KiB
# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
# Script copyright (C) Campbell Barton, Bastien Montagne
import array
import datetime
import math
import os
import time
from collections import OrderedDict
from itertools import zip_longest, chain
if "bpy" in locals():
import importlib
if "encode_bin" in locals():
importlib.reload(encode_bin)
if "data_types" in locals():
importlib.reload(data_types)
if "fbx_utils" in locals():
importlib.reload(fbx_utils)
import bpy
import bpy_extras
from mathutils import Vector, Matrix
from . import encode_bin, data_types, fbx_utils
from .fbx_utils import (
# Constants.
FBX_VERSION, FBX_HEADER_VERSION, FBX_SCENEINFO_VERSION, FBX_TEMPLATES_VERSION,
FBX_MODELS_VERSION,
FBX_GEOMETRY_VERSION, FBX_GEOMETRY_NORMAL_VERSION, FBX_GEOMETRY_BINORMAL_VERSION, FBX_GEOMETRY_TANGENT_VERSION,
FBX_GEOMETRY_SMOOTHING_VERSION, FBX_GEOMETRY_VCOLOR_VERSION, FBX_GEOMETRY_UV_VERSION,
FBX_GEOMETRY_MATERIAL_VERSION, FBX_GEOMETRY_LAYER_VERSION,
FBX_GEOMETRY_SHAPE_VERSION, FBX_DEFORMER_SHAPE_VERSION, FBX_DEFORMER_SHAPECHANNEL_VERSION,
FBX_POSE_BIND_VERSION, FBX_DEFORMER_SKIN_VERSION, FBX_DEFORMER_CLUSTER_VERSION,
FBX_MATERIAL_VERSION, FBX_TEXTURE_VERSION,
FBX_ANIM_KEY_VERSION,
FBX_ANIM_PROPSGROUP_NAME,
FBX_KTIME,
BLENDER_OTHER_OBJECT_TYPES, BLENDER_OBJECT_TYPES_MESHLIKE,
FBX_LIGHT_TYPES, FBX_LIGHT_DECAY_TYPES,
RIGHT_HAND_AXES, FBX_FRAMERATES,
# Miscellaneous utils.
PerfMon,
units_blender_to_fbx_factor, units_convertor, units_convertor_iter,
matrix4_to_array, similar_values, similar_values_iter,
# Mesh transform helpers.
vcos_transformed_gen, nors_transformed_gen,
# UUID from key.
get_fbx_uuid_from_key,
# Key generators.
get_blenderID_key, get_blenderID_name,
get_blender_mesh_shape_key, get_blender_mesh_shape_channel_key,
get_blender_empty_key, get_blender_bone_key,
get_blender_bindpose_key, get_blender_armature_skin_key, get_blender_bone_cluster_key,
get_blender_anim_id_base, get_blender_anim_stack_key, get_blender_anim_layer_key,
get_blender_anim_curve_node_key, get_blender_anim_curve_key,
# FBX element data.
elem_empty,
elem_data_single_bool, elem_data_single_int16, elem_data_single_int32, elem_data_single_int64,
elem_data_single_float32, elem_data_single_float64,
elem_data_single_bytes, elem_data_single_string, elem_data_single_string_unicode,
elem_data_single_bool_array, elem_data_single_int32_array, elem_data_single_int64_array,
elem_data_single_float32_array, elem_data_single_float64_array, elem_data_vec_float64,
# FBX element properties.
elem_properties, elem_props_set, elem_props_compound,
# FBX element properties handling templates.
elem_props_template_init, elem_props_template_set, elem_props_template_finalize,
# Templates.
FBXTemplate, fbx_templates_generate,
# Animation.
AnimationCurveNodeWrapper,
# Objects.
ObjectWrapper, fbx_name_class,
# Top level.
FBXExportSettingsMedia, FBXExportSettings, FBXExportData,
)
# Units convertors!
convert_sec_to_ktime = units_convertor("second", "ktime")
convert_sec_to_ktime_iter = units_convertor_iter("second", "ktime")
convert_mm_to_inch = units_convertor("millimeter", "inch")
convert_rad_to_deg = units_convertor("radian", "degree")
convert_rad_to_deg_iter = units_convertor_iter("radian", "degree")
# ##### Templates #####
# TODO: check all those "default" values, they should match Blender's default as much as possible, I guess?
def fbx_template_def_globalsettings(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict()
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"GlobalSettings", b"", props, nbr_users, [False])
def fbx_template_def_model(scene, settings, override_defaults=None, nbr_users=0):
gscale = settings.global_scale
props = OrderedDict((
# Name, Value, Type, Animatable
(b"QuaternionInterpolate", (0, "p_enum", False)), # 0 = no quat interpolation.
(b"RotationOffset", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"RotationPivot", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"ScalingOffset", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"ScalingPivot", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"TranslationActive", (False, "p_bool", False)),
(b"TranslationMin", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"TranslationMax", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"TranslationMinX", (False, "p_bool", False)),
(b"TranslationMinY", (False, "p_bool", False)),
(b"TranslationMinZ", (False, "p_bool", False)),
(b"TranslationMaxX", (False, "p_bool", False)),
(b"TranslationMaxY", (False, "p_bool", False)),
(b"TranslationMaxZ", (False, "p_bool", False)),
(b"RotationOrder", (0, "p_enum", False)), # we always use 'XYZ' order.
(b"RotationSpaceForLimitOnly", (False, "p_bool", False)),
(b"RotationStiffnessX", (0.0, "p_double", False)),
(b"RotationStiffnessY", (0.0, "p_double", False)),
(b"RotationStiffnessZ", (0.0, "p_double", False)),
(b"AxisLen", (10.0, "p_double", False)),
(b"PreRotation", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"PostRotation", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"RotationActive", (False, "p_bool", False)),
(b"RotationMin", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"RotationMax", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"RotationMinX", (False, "p_bool", False)),
(b"RotationMinY", (False, "p_bool", False)),
(b"RotationMinZ", (False, "p_bool", False)),
(b"RotationMaxX", (False, "p_bool", False)),
(b"RotationMaxY", (False, "p_bool", False)),
(b"RotationMaxZ", (False, "p_bool", False)),
(b"InheritType", (0, "p_enum", False)), # RrSs
(b"ScalingActive", (False, "p_bool", False)),
(b"ScalingMin", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"ScalingMax", ((1.0, 1.0, 1.0), "p_vector_3d", False)),
(b"ScalingMinX", (False, "p_bool", False)),
(b"ScalingMinY", (False, "p_bool", False)),
(b"ScalingMinZ", (False, "p_bool", False)),
(b"ScalingMaxX", (False, "p_bool", False)),
(b"ScalingMaxY", (False, "p_bool", False)),
(b"ScalingMaxZ", (False, "p_bool", False)),
(b"GeometricTranslation", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"GeometricRotation", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"GeometricScaling", ((1.0, 1.0, 1.0), "p_vector_3d", False)),
(b"MinDampRangeX", (0.0, "p_double", False)),
(b"MinDampRangeY", (0.0, "p_double", False)),
(b"MinDampRangeZ", (0.0, "p_double", False)),
(b"MaxDampRangeX", (0.0, "p_double", False)),
(b"MaxDampRangeY", (0.0, "p_double", False)),
(b"MaxDampRangeZ", (0.0, "p_double", False)),
(b"MinDampStrengthX", (0.0, "p_double", False)),
(b"MinDampStrengthY", (0.0, "p_double", False)),
(b"MinDampStrengthZ", (0.0, "p_double", False)),
(b"MaxDampStrengthX", (0.0, "p_double", False)),
(b"MaxDampStrengthY", (0.0, "p_double", False)),
(b"MaxDampStrengthZ", (0.0, "p_double", False)),
(b"PreferedAngleX", (0.0, "p_double", False)),
(b"PreferedAngleY", (0.0, "p_double", False)),
(b"PreferedAngleZ", (0.0, "p_double", False)),
(b"LookAtProperty", (None, "p_object", False)),
(b"UpVectorProperty", (None, "p_object", False)),
(b"Show", (True, "p_bool", False)),
(b"NegativePercentShapeSupport", (True, "p_bool", False)),
(b"DefaultAttributeIndex", (-1, "p_integer", False)),
(b"Freeze", (False, "p_bool", False)),
(b"LODBox", (False, "p_bool", False)),
(b"Lcl Translation", ((0.0, 0.0, 0.0), "p_lcl_translation", True)),
(b"Lcl Rotation", ((0.0, 0.0, 0.0), "p_lcl_rotation", True)),
(b"Lcl Scaling", ((1.0, 1.0, 1.0), "p_lcl_scaling", True)),
(b"Visibility", (1.0, "p_visibility", True)),
(b"Visibility Inheritance", (1, "p_visibility_inheritance", False)),
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"Model", b"FbxNode", props, nbr_users, [False])
def fbx_template_def_null(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict((
(b"Color", ((0.8, 0.8, 0.8), "p_color_rgb", False)),
(b"Size", (100.0, "p_double", False)),
(b"Look", (1, "p_enum", False)), # Cross (0 is None, i.e. invisible?).
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"NodeAttribute", b"FbxNull", props, nbr_users, [False])
def fbx_template_def_light(scene, settings, override_defaults=None, nbr_users=0):
gscale = settings.global_scale
props = OrderedDict((
(b"LightType", (0, "p_enum", False)), # Point light.
(b"CastLight", (True, "p_bool", False)),
(b"Color", ((1.0, 1.0, 1.0), "p_color", True)),
(b"Intensity", (100.0, "p_number", True)), # Times 100 compared to Blender values...
(b"DecayType", (2, "p_enum", False)), # Quadratic.
(b"DecayStart", (30.0 * gscale, "p_double", False)),
(b"CastShadows", (True, "p_bool", False)),
(b"ShadowColor", ((0.0, 0.0, 0.0), "p_color", True)),
(b"AreaLightShape", (0, "p_enum", False)), # Rectangle.
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"NodeAttribute", b"FbxLight", props, nbr_users, [False])
def fbx_template_def_camera(scene, settings, override_defaults=None, nbr_users=0):
r = scene.render
props = OrderedDict((
(b"Color", ((0.8, 0.8, 0.8), "p_color_rgb", False)),
(b"Position", ((0.0, 0.0, -50.0), "p_vector", True)),
(b"UpVector", ((0.0, 1.0, 0.0), "p_vector", True)),
(b"InterestPosition", ((0.0, 0.0, 0.0), "p_vector", True)),
(b"Roll", (0.0, "p_roll", True)),
(b"OpticalCenterX", (0.0, "p_opticalcenterx", True)),
(b"OpticalCenterY", (0.0, "p_opticalcentery", True)),
(b"BackgroundColor", ((0.63, 0.63, 0.63), "p_color", True)),
(b"TurnTable", (0.0, "p_number", True)),
(b"DisplayTurnTableIcon", (False, "p_bool", False)),
(b"UseMotionBlur", (False, "p_bool", False)),
(b"UseRealTimeMotionBlur", (True, "p_bool", False)),
(b"Motion Blur Intensity", (1.0, "p_number", True)),
(b"AspectRatioMode", (0, "p_enum", False)), # WindowSize.
(b"AspectWidth", (320.0, "p_double", False)),
(b"AspectHeight", (200.0, "p_double", False)),
(b"PixelAspectRatio", (1.0, "p_double", False)),
(b"FilmOffsetX", (0.0, "p_number", True)),
(b"FilmOffsetY", (0.0, "p_number", True)),
(b"FilmWidth", (0.816, "p_double", False)),
(b"FilmHeight", (0.612, "p_double", False)),
(b"FilmAspectRatio", (1.3333333333333333, "p_double", False)),
(b"FilmSqueezeRatio", (1.0, "p_double", False)),
(b"FilmFormatIndex", (0, "p_enum", False)), # Assuming this is ApertureFormat, 0 = custom.
(b"PreScale", (1.0, "p_number", True)),
(b"FilmTranslateX", (0.0, "p_number", True)),
(b"FilmTranslateY", (0.0, "p_number", True)),
(b"FilmRollPivotX", (0.0, "p_number", True)),
(b"FilmRollPivotY", (0.0, "p_number", True)),
(b"FilmRollValue", (0.0, "p_number", True)),
(b"FilmRollOrder", (0, "p_enum", False)), # 0 = rotate first (default).
(b"ApertureMode", (2, "p_enum", False)), # 2 = Vertical.
(b"GateFit", (0, "p_enum", False)), # 0 = no resolution gate fit.
(b"FieldOfView", (25.114999771118164, "p_fov", True)),
(b"FieldOfViewX", (40.0, "p_fov_x", True)),
(b"FieldOfViewY", (40.0, "p_fov_y", True)),
(b"FocalLength", (34.89327621672628, "p_number", True)),
(b"CameraFormat", (0, "p_enum", False)), # Custom camera format.
(b"UseFrameColor", (False, "p_bool", False)),
(b"FrameColor", ((0.3, 0.3, 0.3), "p_color_rgb", False)),
(b"ShowName", (True, "p_bool", False)),
(b"ShowInfoOnMoving", (True, "p_bool", False)),
(b"ShowGrid", (True, "p_bool", False)),
(b"ShowOpticalCenter", (False, "p_bool", False)),
(b"ShowAzimut", (True, "p_bool", False)),
(b"ShowTimeCode", (False, "p_bool", False)),
(b"ShowAudio", (False, "p_bool", False)),
(b"AudioColor", ((0.0, 1.0, 0.0), "p_vector_3d", False)), # Yep, vector3d, not corlorgb… :cry:
(b"NearPlane", (10.0, "p_double", False)),
(b"FarPlane", (4000.0, "p_double", False)),
(b"AutoComputeClipPanes", (False, "p_bool", False)),
(b"ViewCameraToLookAt", (True, "p_bool", False)),
(b"ViewFrustumNearFarPlane", (False, "p_bool", False)),
(b"ViewFrustumBackPlaneMode", (2, "p_enum", False)), # 2 = show back plane if texture added.
(b"BackPlaneDistance", (4000.0, "p_number", True)),
(b"BackPlaneDistanceMode", (1, "p_enum", False)), # 1 = relative to camera.
(b"ViewFrustumFrontPlaneMode", (2, "p_enum", False)), # 2 = show front plane if texture added.
(b"FrontPlaneDistance", (10.0, "p_number", True)),
(b"FrontPlaneDistanceMode", (1, "p_enum", False)), # 1 = relative to camera.
(b"LockMode", (False, "p_bool", False)),
(b"LockInterestNavigation", (False, "p_bool", False)),
# BackPlate... properties **arggggg!**
(b"FitImage", (False, "p_bool", False)),
(b"Crop", (False, "p_bool", False)),
(b"Center", (True, "p_bool", False)),
(b"KeepRatio", (True, "p_bool", False)),
# End of BackPlate...
(b"BackgroundAlphaTreshold", (0.5, "p_double", False)),
(b"ShowBackplate", (True, "p_bool", False)),
(b"BackPlaneOffsetX", (0.0, "p_number", True)),
(b"BackPlaneOffsetY", (0.0, "p_number", True)),
(b"BackPlaneRotation", (0.0, "p_number", True)),
(b"BackPlaneScaleX", (1.0, "p_number", True)),
(b"BackPlaneScaleY", (1.0, "p_number", True)),
(b"Background Texture", (None, "p_object", False)),
(b"FrontPlateFitImage", (True, "p_bool", False)),
(b"FrontPlateCrop", (False, "p_bool", False)),
(b"FrontPlateCenter", (True, "p_bool", False)),
(b"FrontPlateKeepRatio", (True, "p_bool", False)),
(b"Foreground Opacity", (1.0, "p_double", False)),
(b"ShowFrontplate", (True, "p_bool", False)),
(b"FrontPlaneOffsetX", (0.0, "p_number", True)),
(b"FrontPlaneOffsetY", (0.0, "p_number", True)),
(b"FrontPlaneRotation", (0.0, "p_number", True)),
(b"FrontPlaneScaleX", (1.0, "p_number", True)),
(b"FrontPlaneScaleY", (1.0, "p_number", True)),
(b"Foreground Texture", (None, "p_object", False)),
(b"DisplaySafeArea", (False, "p_bool", False)),
(b"DisplaySafeAreaOnRender", (False, "p_bool", False)),
(b"SafeAreaDisplayStyle", (1, "p_enum", False)), # 1 = rounded corners.
(b"SafeAreaAspectRatio", (1.3333333333333333, "p_double", False)),
(b"Use2DMagnifierZoom", (False, "p_bool", False)),
(b"2D Magnifier Zoom", (100.0, "p_number", True)),
(b"2D Magnifier X", (50.0, "p_number", True)),
(b"2D Magnifier Y", (50.0, "p_number", True)),
(b"CameraProjectionType", (0, "p_enum", False)), # 0 = perspective, 1 = orthogonal.
(b"OrthoZoom", (1.0, "p_double", False)),
(b"UseRealTimeDOFAndAA", (False, "p_bool", False)),
(b"UseDepthOfField", (False, "p_bool", False)),
(b"FocusSource", (0, "p_enum", False)), # 0 = camera interest, 1 = distance from camera interest.
(b"FocusAngle", (3.5, "p_double", False)), # ???
(b"FocusDistance", (200.0, "p_double", False)),
(b"UseAntialiasing", (False, "p_bool", False)),
(b"AntialiasingIntensity", (0.77777, "p_double", False)),
(b"AntialiasingMethod", (0, "p_enum", False)), # 0 = oversampling, 1 = hardware.
(b"UseAccumulationBuffer", (False, "p_bool", False)),
(b"FrameSamplingCount", (7, "p_integer", False)),
(b"FrameSamplingType", (1, "p_enum", False)), # 0 = uniform, 1 = stochastic.
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"NodeAttribute", b"FbxCamera", props, nbr_users, [False])
def fbx_template_def_bone(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict()
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"NodeAttribute", b"LimbNode", props, nbr_users, [False])
def fbx_template_def_geometry(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict((
(b"Color", ((0.8, 0.8, 0.8), "p_color_rgb", False)),
(b"BBoxMin", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"BBoxMax", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"Primary Visibility", (True, "p_bool", False)),
(b"Casts Shadows", (True, "p_bool", False)),
(b"Receive Shadows", (True, "p_bool", False)),
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"Geometry", b"FbxMesh", props, nbr_users, [False])
def fbx_template_def_material(scene, settings, override_defaults=None, nbr_users=0):
# WIP...
props = OrderedDict((
(b"ShadingModel", ("Phong", "p_string", False)),
(b"MultiLayer", (False, "p_bool", False)),
# Lambert-specific.
(b"EmissiveColor", ((0.0, 0.0, 0.0), "p_color", True)),
(b"EmissiveFactor", (1.0, "p_number", True)),
(b"AmbientColor", ((0.2, 0.2, 0.2), "p_color", True)),
(b"AmbientFactor", (1.0, "p_number", True)),
(b"DiffuseColor", ((0.8, 0.8, 0.8), "p_color", True)),
(b"DiffuseFactor", (1.0, "p_number", True)),
(b"TransparentColor", ((0.0, 0.0, 0.0), "p_color", True)),
(b"TransparencyFactor", (0.0, "p_number", True)),
(b"Opacity", (1.0, "p_number", True)),
(b"NormalMap", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"Bump", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"BumpFactor", (1.0, "p_double", False)),
(b"DisplacementColor", ((0.0, 0.0, 0.0), "p_color_rgb", False)),
(b"DisplacementFactor", (1.0, "p_double", False)),
(b"VectorDisplacementColor", ((0.0, 0.0, 0.0), "p_color_rgb", False)),
(b"VectorDisplacementFactor", (1.0, "p_double", False)),
# Phong-specific.
(b"SpecularColor", ((0.2, 0.2, 0.2), "p_color", True)),
(b"SpecularFactor", (1.0, "p_number", True)),
# Not sure about the name, importer uses this (but ShininessExponent for tex prop name!)
# And in fbx exported by sdk, you have one in template, the other in actual material!!! :/
# For now, using both.
(b"Shininess", (20.0, "p_number", True)),
(b"ShininessExponent", (20.0, "p_number", True)),
(b"ReflectionColor", ((0.0, 0.0, 0.0), "p_color", True)),
(b"ReflectionFactor", (1.0, "p_number", True)),
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"Material", b"FbxSurfacePhong", props, nbr_users, [False])
def fbx_template_def_texture_file(scene, settings, override_defaults=None, nbr_users=0):
# WIP...
# XXX Not sure about all names!
props = OrderedDict((
(b"TextureTypeUse", (0, "p_enum", False)), # Standard.
(b"AlphaSource", (2, "p_enum", False)), # Black (i.e. texture's alpha), XXX name guessed!.
(b"Texture alpha", (1.0, "p_double", False)),
(b"PremultiplyAlpha", (True, "p_bool", False)),
(b"CurrentTextureBlendMode", (1, "p_enum", False)), # Additive...
(b"CurrentMappingType", (0, "p_enum", False)), # UV.
(b"UVSet", ("default", "p_string", False)), # UVMap name.
(b"WrapModeU", (0, "p_enum", False)), # Repeat.
(b"WrapModeV", (0, "p_enum", False)), # Repeat.
(b"UVSwap", (False, "p_bool", False)),
(b"Translation", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"Rotation", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"Scaling", ((1.0, 1.0, 1.0), "p_vector_3d", False)),
(b"TextureRotationPivot", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
(b"TextureScalingPivot", ((0.0, 0.0, 0.0), "p_vector_3d", False)),
# Not sure about those two...
(b"UseMaterial", (False, "p_bool", False)),
(b"UseMipMap", (False, "p_bool", False)),
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"Texture", b"FbxFileTexture", props, nbr_users, [False])
def fbx_template_def_video(scene, settings, override_defaults=None, nbr_users=0):
# WIP...
props = OrderedDict((
# All pictures.
(b"Width", (0, "p_integer", False)),
(b"Height", (0, "p_integer", False)),
(b"Path", ("", "p_string_url", False)),
(b"AccessMode", (0, "p_enum", False)), # Disk (0=Disk, 1=Mem, 2=DiskAsync).
# All videos.
(b"StartFrame", (0, "p_integer", False)),
(b"StopFrame", (0, "p_integer", False)),
(b"Offset", (0, "p_timestamp", False)),
(b"PlaySpeed", (0.0, "p_double", False)),
(b"FreeRunning", (False, "p_bool", False)),
(b"Loop", (False, "p_bool", False)),
(b"InterlaceMode", (0, "p_enum", False)), # None, i.e. progressive.
# Image sequences.
(b"ImageSequence", (False, "p_bool", False)),
(b"ImageSequenceOffset", (0, "p_integer", False)),
(b"FrameRate", (0.0, "p_double", False)),
(b"LastFrame", (0, "p_integer", False)),
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"Video", b"FbxVideo", props, nbr_users, [False])
def fbx_template_def_pose(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict()
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"Pose", b"", props, nbr_users, [False])
def fbx_template_def_deformer(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict()
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"Deformer", b"", props, nbr_users, [False])
def fbx_template_def_animstack(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict((
(b"Description", ("", "p_string", False)),
(b"LocalStart", (0, "p_timestamp", False)),
(b"LocalStop", (0, "p_timestamp", False)),
(b"ReferenceStart", (0, "p_timestamp", False)),
(b"ReferenceStop", (0, "p_timestamp", False)),
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"AnimationStack", b"FbxAnimStack", props, nbr_users, [False])
def fbx_template_def_animlayer(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict((
(b"Weight", (100.0, "p_number", True)),
(b"Mute", (False, "p_bool", False)),
(b"Solo", (False, "p_bool", False)),
(b"Lock", (False, "p_bool", False)),
(b"Color", ((0.8, 0.8, 0.8), "p_color_rgb", False)),
(b"BlendMode", (0, "p_enum", False)),
(b"RotationAccumulationMode", (0, "p_enum", False)),
(b"ScaleAccumulationMode", (0, "p_enum", False)),
(b"BlendModeBypass", (0, "p_ulonglong", False)),
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"AnimationLayer", b"FbxAnimLayer", props, nbr_users, [False])
def fbx_template_def_animcurvenode(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict((
(FBX_ANIM_PROPSGROUP_NAME.encode(), (None, "p_compound", False)),
))
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"AnimationCurveNode", b"FbxAnimCurveNode", props, nbr_users, [False])
def fbx_template_def_animcurve(scene, settings, override_defaults=None, nbr_users=0):
props = OrderedDict()
if override_defaults is not None:
props.update(override_defaults)
return FBXTemplate(b"AnimationCurve", b"", props, nbr_users, [False])
# ##### Generators for connection elements. #####
def elem_connection(elem, c_type, uid_src, uid_dst, prop_dst=None):
e = elem_data_single_string(elem, b"C", c_type)
e.add_int64(uid_src)
e.add_int64(uid_dst)
if prop_dst is not None:
e.add_string(prop_dst)
# ##### FBX objects generators. #####
def fbx_data_element_custom_properties(props, bid):
"""
Store custom properties of blender ID bid (any mapping-like object, in fact) into FBX properties props.
"""
for k, v in bid.items():
list_val = getattr(v, "to_list", lambda: None)()
if isinstance(v, str):
elem_props_set(props, "p_string", k.encode(), v, custom=True)
elif isinstance(v, int):
elem_props_set(props, "p_integer", k.encode(), v, custom=True)
elif isinstance(v, float):
elem_props_set(props, "p_double", k.encode(), v, custom=True)
elif list_val and len(list_val) == 3:
elem_props_set(props, "p_vector", k.encode(), list_val, custom=True)
def fbx_data_empty_elements(root, empty, scene_data):
"""
Write the Empty data block.
"""
empty_key = scene_data.data_empties[empty]
null = elem_data_single_int64(root, b"NodeAttribute", get_fbx_uuid_from_key(empty_key))
null.add_string(fbx_name_class(empty.name.encode(), b"NodeAttribute"))
null.add_string(b"Null")
elem_data_single_string(null, b"TypeFlags", b"Null")
tmpl = elem_props_template_init(scene_data.templates, b"Null")
props = elem_properties(null)
elem_props_template_finalize(tmpl, props)
# No custom properties, already saved with object (Model).
def fbx_data_lamp_elements(root, lamp, scene_data):
"""
Write the Lamp data block.
"""
gscale = scene_data.settings.global_scale
lamp_key = scene_data.data_lamps[lamp]
do_light = True
decay_type = FBX_LIGHT_DECAY_TYPES['CONSTANT']
do_shadow = False
shadow_color = Vector((0.0, 0.0, 0.0))
if lamp.type not in {'HEMI'}:
if lamp.type not in {'SUN', 'AREA'}:
decay_type = FBX_LIGHT_DECAY_TYPES[lamp.falloff_type]
do_light = (not lamp.use_only_shadow) and (lamp.use_specular or lamp.use_diffuse)
do_shadow = lamp.shadow_method not in {'NOSHADOW'}
shadow_color = lamp.shadow_color
light = elem_data_single_int64(root, b"NodeAttribute", get_fbx_uuid_from_key(lamp_key))
light.add_string(fbx_name_class(lamp.name.encode(), b"NodeAttribute"))
light.add_string(b"Light")
elem_data_single_int32(light, b"GeometryVersion", FBX_GEOMETRY_VERSION) # Sic...
tmpl = elem_props_template_init(scene_data.templates, b"Light")
props = elem_properties(light)
elem_props_template_set(tmpl, props, "p_enum", b"LightType", FBX_LIGHT_TYPES[lamp.type])
elem_props_template_set(tmpl, props, "p_bool", b"CastLight", do_light)
elem_props_template_set(tmpl, props, "p_color", b"Color", lamp.color)
elem_props_template_set(tmpl, props, "p_number", b"Intensity", lamp.energy * 100.0)
elem_props_template_set(tmpl, props, "p_enum", b"DecayType", decay_type)
elem_props_template_set(tmpl, props, "p_double", b"DecayStart", lamp.distance * gscale)
elem_props_template_set(tmpl, props, "p_bool", b"CastShadows", do_shadow)
elem_props_template_set(tmpl, props, "p_color", b"ShadowColor", shadow_color)
if lamp.type in {'SPOT'}:
elem_props_template_set(tmpl, props, "p_double", b"OuterAngle", math.degrees(lamp.spot_size))
elem_props_template_set(tmpl, props, "p_double", b"InnerAngle",
math.degrees(lamp.spot_size * (1.0 - lamp.spot_blend)))
elem_props_template_finalize(tmpl, props)
# Custom properties.
if scene_data.settings.use_custom_props:
fbx_data_element_custom_properties(props, lamp)
def fbx_data_camera_elements(root, cam_obj, scene_data):
"""
Write the Camera data blocks.
"""
gscale = scene_data.settings.global_scale
cam = cam_obj.bdata
cam_data = cam.data
cam_key = scene_data.data_cameras[cam_obj]
# Real data now, good old camera!
# Object transform info.
loc, rot, scale, matrix, matrix_rot = cam_obj.fbx_object_tx(scene_data)
up = matrix_rot * Vector((0.0, 1.0, 0.0))
to = matrix_rot * Vector((0.0, 0.0, -1.0))
# Render settings.
# TODO We could export much more...
render = scene_data.scene.render
width = render.resolution_x
height = render.resolution_y
aspect = width / height
# Film width & height from mm to inches
filmwidth = convert_mm_to_inch(cam_data.sensor_width)
filmheight = convert_mm_to_inch(cam_data.sensor_height)
filmaspect = filmwidth / filmheight
# Film offset
offsetx = filmwidth * cam_data.shift_x
offsety = filmaspect * filmheight * cam_data.shift_y
cam = elem_data_single_int64(root, b"NodeAttribute", get_fbx_uuid_from_key(cam_key))
cam.add_string(fbx_name_class(cam_data.name.encode(), b"NodeAttribute"))
cam.add_string(b"Camera")
tmpl = elem_props_template_init(scene_data.templates, b"Camera")
props = elem_properties(cam)
elem_props_template_set(tmpl, props, "p_vector", b"Position", loc)
elem_props_template_set(tmpl, props, "p_vector", b"UpVector", up)
elem_props_template_set(tmpl, props, "p_vector", b"InterestPosition", loc + to) # Point, not vector!
# Should we use world value?
elem_props_template_set(tmpl, props, "p_color", b"BackgroundColor", (0.0, 0.0, 0.0))
elem_props_template_set(tmpl, props, "p_bool", b"DisplayTurnTableIcon", True)
elem_props_template_set(tmpl, props, "p_enum", b"AspectRatioMode", 2) # FixedResolution
elem_props_template_set(tmpl, props, "p_double", b"AspectWidth", float(render.resolution_x))
elem_props_template_set(tmpl, props, "p_double", b"AspectHeight", float(render.resolution_y))
elem_props_template_set(tmpl, props, "p_double", b"PixelAspectRatio",
float(render.pixel_aspect_x / render.pixel_aspect_y))
elem_props_template_set(tmpl, props, "p_double", b"FilmWidth", filmwidth)
elem_props_template_set(tmpl, props, "p_double", b"FilmHeight", filmheight)
elem_props_template_set(tmpl, props, "p_double", b"FilmAspectRatio", filmaspect)
elem_props_template_set(tmpl, props, "p_double", b"FilmOffsetX", offsetx)
elem_props_template_set(tmpl, props, "p_double", b"FilmOffsetY", offsety)
elem_props_template_set(tmpl, props, "p_enum", b"ApertureMode", 3) # FocalLength.
elem_props_template_set(tmpl, props, "p_enum", b"GateFit", 2) # FitHorizontal.
elem_props_template_set(tmpl, props, "p_fov", b"FieldOfView", math.degrees(cam_data.angle_x))
elem_props_template_set(tmpl, props, "p_fov_x", b"FieldOfViewX", math.degrees(cam_data.angle_x))
elem_props_template_set(tmpl, props, "p_fov_y", b"FieldOfViewY", math.degrees(cam_data.angle_y))
# No need to convert to inches here...
elem_props_template_set(tmpl, props, "p_double", b"FocalLength", cam_data.lens)
elem_props_template_set(tmpl, props, "p_double", b"SafeAreaAspectRatio", aspect)
# Default to perspective camera.
elem_props_template_set(tmpl, props, "p_enum", b"CameraProjectionType", 1 if cam_data.type == 'ORTHO' else 0)
elem_props_template_set(tmpl, props, "p_double", b"OrthoZoom", cam_data.ortho_scale)
elem_props_template_set(tmpl, props, "p_double", b"NearPlane", cam_data.clip_start * gscale)
elem_props_template_set(tmpl, props, "p_double", b"FarPlane", cam_data.clip_end * gscale)
elem_props_template_set(tmpl, props, "p_enum", b"BackPlaneDistanceMode", 1) # RelativeToCamera.
elem_props_template_set(tmpl, props, "p_double", b"BackPlaneDistance", cam_data.clip_end * gscale)
elem_props_template_finalize(tmpl, props)
# Custom properties.
if scene_data.settings.use_custom_props:
fbx_data_element_custom_properties(props, cam_data)
elem_data_single_string(cam, b"TypeFlags", b"Camera")
elem_data_single_int32(cam, b"GeometryVersion", 124) # Sic...
elem_data_vec_float64(cam, b"Position", loc)
elem_data_vec_float64(cam, b"Up", up)
elem_data_vec_float64(cam, b"LookAt", to)
elem_data_single_int32(cam, b"ShowInfoOnMoving", 1)
elem_data_single_int32(cam, b"ShowAudio", 0)
elem_data_vec_float64(cam, b"AudioColor", (0.0, 1.0, 0.0))
elem_data_single_float64(cam, b"CameraOrthoZoom", 1.0)
def fbx_data_bindpose_element(root, me_obj, me, scene_data, arm_obj=None, mat_world_arm=None, bones=[]):
"""
Helper, since bindpose are used by both meshes shape keys and armature bones...
"""
if arm_obj is None:
arm_obj = me_obj
# We assume bind pose for our bones are their "Editmode" pose...
# All matrices are expected in global (world) space.
bindpose_key = get_blender_bindpose_key(arm_obj.bdata, me)
fbx_pose = elem_data_single_int64(root, b"Pose", get_fbx_uuid_from_key(bindpose_key))
fbx_pose.add_string(fbx_name_class(me.name.encode(), b"Pose"))
fbx_pose.add_string(b"BindPose")
elem_data_single_string(fbx_pose, b"Type", b"BindPose")
elem_data_single_int32(fbx_pose, b"Version", FBX_POSE_BIND_VERSION)
elem_data_single_int32(fbx_pose, b"NbPoseNodes", 1 + (1 if (arm_obj != me_obj) else 0) + len(bones))
# First node is mesh/object.
mat_world_obj = me_obj.fbx_object_matrix(scene_data, global_space=True)
fbx_posenode = elem_empty(fbx_pose, b"PoseNode")
elem_data_single_int64(fbx_posenode, b"Node", me_obj.fbx_uuid)
elem_data_single_float64_array(fbx_posenode, b"Matrix", matrix4_to_array(mat_world_obj))
# Second node is armature object itself.
if arm_obj != me_obj:
fbx_posenode = elem_empty(fbx_pose, b"PoseNode")
elem_data_single_int64(fbx_posenode, b"Node", arm_obj.fbx_uuid)
elem_data_single_float64_array(fbx_posenode, b"Matrix", matrix4_to_array(mat_world_arm))
# And all bones of armature!
mat_world_bones = {}
for bo_obj in bones:
bomat = bo_obj.fbx_object_matrix(scene_data, rest=True, global_space=True)
mat_world_bones[bo_obj] = bomat
fbx_posenode = elem_empty(fbx_pose, b"PoseNode")
elem_data_single_int64(fbx_posenode, b"Node", bo_obj.fbx_uuid)
elem_data_single_float64_array(fbx_posenode, b"Matrix", matrix4_to_array(bomat))
return mat_world_obj, mat_world_bones
def fbx_data_mesh_shapes_elements(root, me_obj, me, scene_data, fbx_me_tmpl, fbx_me_props):
"""
Write shape keys related data.
"""
if me not in scene_data.data_deformers_shape:
return
write_normals = True # scene_data.settings.mesh_smooth_type in {'OFF'}
# First, write the geometry data itself (i.e. shapes).
_me_key, shape_key, shapes = scene_data.data_deformers_shape[me]
channels = []
for shape, (channel_key, geom_key, shape_verts_co, shape_verts_idx) in shapes.items():
# Use vgroups as weights, if defined.
if shape.vertex_group and shape.vertex_group in me_obj.bdata.vertex_groups:
shape_verts_weights = [0.0] * (len(shape_verts_co) // 3)
vg_idx = me_obj.bdata.vertex_groups[shape.vertex_group].index
for sk_idx, v_idx in enumerate(shape_verts_idx):
for vg in me.vertices[v_idx].groups:
if vg.group == vg_idx:
shape_verts_weights[sk_idx] = vg.weight * 100.0
else:
shape_verts_weights = [100.0] * (len(shape_verts_co) // 3)
channels.append((channel_key, shape, shape_verts_weights))
geom = elem_data_single_int64(root, b"Geometry", get_fbx_uuid_from_key(geom_key))
geom.add_string(fbx_name_class(shape.name.encode(), b"Geometry"))
geom.add_string(b"Shape")
tmpl = elem_props_template_init(scene_data.templates, b"Geometry")
props = elem_properties(geom)
elem_props_template_finalize(tmpl, props)
elem_data_single_int32(geom, b"Version", FBX_GEOMETRY_SHAPE_VERSION)
elem_data_single_int32_array(geom, b"Indexes", shape_verts_idx)
elem_data_single_float64_array(geom, b"Vertices", shape_verts_co)
if write_normals:
elem_data_single_float64_array(geom, b"Normals", [0.0] * len(shape_verts_co))
# Yiha! BindPose for shapekeys too! Dodecasigh...
# XXX Not sure yet whether several bindposes on same mesh are allowed, or not... :/
fbx_data_bindpose_element(root, me_obj, me, scene_data)
# ...and now, the deformers stuff.
fbx_shape = elem_data_single_int64(root, b"Deformer", get_fbx_uuid_from_key(shape_key))
fbx_shape.add_string(fbx_name_class(me.name.encode(), b"Deformer"))
fbx_shape.add_string(b"BlendShape")
elem_data_single_int32(fbx_shape, b"Version", FBX_DEFORMER_SHAPE_VERSION)
for channel_key, shape, shape_verts_weights in channels:
fbx_channel = elem_data_single_int64(root, b"Deformer", get_fbx_uuid_from_key(channel_key))
fbx_channel.add_string(fbx_name_class(shape.name.encode(), b"SubDeformer"))
fbx_channel.add_string(b"BlendShapeChannel")
elem_data_single_int32(fbx_channel, b"Version", FBX_DEFORMER_SHAPECHANNEL_VERSION)
elem_data_single_float64(fbx_channel, b"DeformPercent", shape.value * 100.0) # Percents...
elem_data_single_float64_array(fbx_channel, b"FullWeights", shape_verts_weights)
# *WHY* add this in linked mesh properties too? *cry*
# No idea whether it’s percent here too, or more usual factor (assume percentage for now) :/
elem_props_template_set(fbx_me_tmpl, fbx_me_props, "p_number", shape.name.encode(), shape.value * 100.0,
animatable=True)
def fbx_data_mesh_elements(root, me_obj, scene_data, done_meshes):
"""
Write the Mesh (Geometry) data block.
"""
# Ugly helper... :/
def _infinite_gen(val):
while 1:
yield val
me_key, me, _free = scene_data.data_meshes[me_obj]
# In case of multiple instances of same mesh, only write it once!
if me_key in done_meshes:
return
# No gscale/gmat here, all data are supposed to be in object space.
smooth_type = scene_data.settings.mesh_smooth_type
write_normals = True # smooth_type in {'OFF'}
do_bake_space_transform = me_obj.use_bake_space_transform(scene_data)
# Vertices are in object space, but we are post-multiplying all transforms with the inverse of the
# global matrix, so we need to apply the global matrix to the vertices to get the correct result.
geom_mat_co = scene_data.settings.global_matrix if do_bake_space_transform else None
# We need to apply the inverse transpose of the global matrix when transforming normals.
geom_mat_no = Matrix(scene_data.settings.global_matrix_inv_transposed) if do_bake_space_transform else None
if geom_mat_no is not None:
# Remove translation & scaling!
geom_mat_no.translation = Vector()
geom_mat_no.normalize()
geom = elem_data_single_int64(root, b"Geometry", get_fbx_uuid_from_key(me_key))
geom.add_string(fbx_name_class(me.name.encode(), b"Geometry"))
geom.add_string(b"Mesh")
tmpl = elem_props_template_init(scene_data.templates, b"Geometry")
props = elem_properties(geom)
# Custom properties.
if scene_data.settings.use_custom_props:
fbx_data_element_custom_properties(props, me)
elem_data_single_int32(geom, b"GeometryVersion", FBX_GEOMETRY_VERSION)
# Vertex cos.
t_co = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.vertices) * 3
me.vertices.foreach_get("co", t_co)
elem_data_single_float64_array(geom, b"Vertices", chain(*vcos_transformed_gen(t_co, geom_mat_co)))
del t_co
# Polygon indices.
#
# We do loose edges as two-vertices faces, if enabled...
#
# Note we have to process Edges in the same time, as they are based on poly's loops...
loop_nbr = len(me.loops)
t_pvi = array.array(data_types.ARRAY_INT32, (0,)) * loop_nbr
t_ls = [None] * len(me.polygons)
me.loops.foreach_get("vertex_index", t_pvi)
me.polygons.foreach_get("loop_start", t_ls)
# Add "fake" faces for loose edges.
if scene_data.settings.use_mesh_edges:
t_le = tuple(e.vertices for e in me.edges if e.is_loose)
t_pvi.extend(chain(*t_le))
t_ls.extend(range(loop_nbr, loop_nbr + len(t_le), 2))
del t_le
# Edges...
# Note: Edges are represented as a loop here: each edge uses a single index, which refers to the polygon array.
# The edge is made by the vertex indexed py this polygon's point and the next one on the same polygon.
# Advantage: Only one index per edge.
# Drawback: Only polygon's edges can be represented (that's why we have to add fake two-verts polygons
# for loose edges).
# We also have to store a mapping from real edges to their indices in this array, for edge-mapped data
# (like e.g. crease).
t_eli = array.array(data_types.ARRAY_INT32)
edges_map = {}
edges_nbr = 0
if t_ls and t_pvi:
t_ls = set(t_ls)
todo_edges = [None] * len(me.edges) * 2
# Sigh, cannot access edge.key through foreach_get... :/
me.edges.foreach_get("vertices", todo_edges)
todo_edges = set((v1, v2) if v1 < v2 else (v2, v1) for v1, v2 in zip(*(iter(todo_edges),) * 2))
li = 0
vi = vi_start = t_pvi[0]
for li_next, vi_next in enumerate(t_pvi[1:] + t_pvi[:1], start=1):
if li_next in t_ls: # End of a poly's loop.
vi2 = vi_start
vi_start = vi_next
else:
vi2 = vi_next
e_key = (vi, vi2) if vi < vi2 else (vi2, vi)
if e_key in todo_edges:
t_eli.append(li)
todo_edges.remove(e_key)
edges_map[e_key] = edges_nbr
edges_nbr += 1
vi = vi_next
li = li_next
# End of edges!
# We have to ^-1 last index of each loop.
for ls in t_ls:
t_pvi[ls - 1] ^= -1
# And finally we can write data!
elem_data_single_int32_array(geom, b"PolygonVertexIndex", t_pvi)
elem_data_single_int32_array(geom, b"Edges", t_eli)
del t_pvi
del t_ls
del t_eli
# And now, layers!
# Smoothing.
if smooth_type in {'FACE', 'EDGE'}:
t_ps = None
_map = b""
if smooth_type == 'FACE':
t_ps = array.array(data_types.ARRAY_INT32, (0,)) * len(me.polygons)
me.polygons.foreach_get("use_smooth", t_ps)
_map = b"ByPolygon"
else: # EDGE
# Write Edge Smoothing.
# Note edge is sharp also if it's used by more than two faces, or one of its faces is flat.
t_ps = array.array(data_types.ARRAY_INT32, (0,)) * edges_nbr
sharp_edges = set()
temp_sharp_edges = {}
for p in me.polygons:
if not p.use_smooth:
sharp_edges.update(p.edge_keys)
continue
for k in p.edge_keys:
if temp_sharp_edges.setdefault(k, 0) > 1:
sharp_edges.add(k)
else:
temp_sharp_edges[k] += 1
del temp_sharp_edges
for e in me.edges:
if e.key not in edges_map:
continue # Only loose edges, in theory!
t_ps[edges_map[e.key]] = not (e.use_edge_sharp or (e.key in sharp_edges))
_map = b"ByEdge"
lay_smooth = elem_data_single_int32(geom, b"LayerElementSmoothing", 0)
elem_data_single_int32(lay_smooth, b"Version", FBX_GEOMETRY_SMOOTHING_VERSION)
elem_data_single_string(lay_smooth, b"Name", b"")
elem_data_single_string(lay_smooth, b"MappingInformationType", _map)
elem_data_single_string(lay_smooth, b"ReferenceInformationType", b"Direct")
elem_data_single_int32_array(lay_smooth, b"Smoothing", t_ps) # Sight, int32 for bool...
del t_ps
# TODO: Edge crease (LayerElementCrease).
# And we are done with edges!
del edges_map
# Loop normals.
tspacenumber = 0
if write_normals:
# NOTE: this is not supported by importer currently.
# XXX Official docs says normals should use IndexToDirect,
# but this does not seem well supported by apps currently...
me.calc_normals_split()
t_ln = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops) * 3
me.loops.foreach_get("normal", t_ln)
t_ln = nors_transformed_gen(t_ln, geom_mat_no)
if 0:
t_ln = tuple(t_ln) # No choice... :/
lay_nor = elem_data_single_int32(geom, b"LayerElementNormal", 0)
elem_data_single_int32(lay_nor, b"Version", FBX_GEOMETRY_NORMAL_VERSION)
elem_data_single_string(lay_nor, b"Name", b"")
elem_data_single_string(lay_nor, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_nor, b"ReferenceInformationType", b"IndexToDirect")
ln2idx = tuple(set(t_ln))
elem_data_single_float64_array(lay_nor, b"Normals", chain(*ln2idx))
# Normal weights, no idea what it is.
# t_lnw = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(ln2idx)
# elem_data_single_float64_array(lay_nor, b"NormalsW", t_lnw)
ln2idx = {nor: idx for idx, nor in enumerate(ln2idx)}
elem_data_single_int32_array(lay_nor, b"NormalsIndex", (ln2idx[n] for n in t_ln))
del ln2idx
# del t_lnw
else:
lay_nor = elem_data_single_int32(geom, b"LayerElementNormal", 0)
elem_data_single_int32(lay_nor, b"Version", FBX_GEOMETRY_NORMAL_VERSION)
elem_data_single_string(lay_nor, b"Name", b"")
elem_data_single_string(lay_nor, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_nor, b"ReferenceInformationType", b"Direct")
elem_data_single_float64_array(lay_nor, b"Normals", chain(*t_ln))
# Normal weights, no idea what it is.
# t_ln = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops)
# elem_data_single_float64_array(lay_nor, b"NormalsW", t_ln)
del t_ln
# tspace
if scene_data.settings.use_tspace:
tspacenumber = len(me.uv_layers)
if tspacenumber:
t_ln = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops) * 3
# t_lnw = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops)
for idx, uvlayer in enumerate(me.uv_layers):
name = uvlayer.name
me.calc_tangents(name)
# Loop bitangents (aka binormals).
# NOTE: this is not supported by importer currently.
me.loops.foreach_get("bitangent", t_ln)
lay_nor = elem_data_single_int32(geom, b"LayerElementBinormal", idx)
elem_data_single_int32(lay_nor, b"Version", FBX_GEOMETRY_BINORMAL_VERSION)
elem_data_single_string_unicode(lay_nor, b"Name", name)
elem_data_single_string(lay_nor, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_nor, b"ReferenceInformationType", b"Direct")
elem_data_single_float64_array(lay_nor, b"Binormals",
chain(*nors_transformed_gen(t_ln, geom_mat_no)))
# Binormal weights, no idea what it is.
# elem_data_single_float64_array(lay_nor, b"BinormalsW", t_lnw)
# Loop tangents.
# NOTE: this is not supported by importer currently.
me.loops.foreach_get("tangent", t_ln)
lay_nor = elem_data_single_int32(geom, b"LayerElementTangent", idx)
elem_data_single_int32(lay_nor, b"Version", FBX_GEOMETRY_TANGENT_VERSION)
elem_data_single_string_unicode(lay_nor, b"Name", name)
elem_data_single_string(lay_nor, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_nor, b"ReferenceInformationType", b"Direct")
elem_data_single_float64_array(lay_nor, b"Tangents",
chain(*nors_transformed_gen(t_ln, geom_mat_no)))
# Tangent weights, no idea what it is.
# elem_data_single_float64_array(lay_nor, b"TangentsW", t_lnw)
del t_ln
# del t_lnw
me.free_tangents()
me.free_normals_split()
# Write VertexColor Layers.
vcolnumber = len(me.vertex_colors)
if vcolnumber:
def _coltuples_gen(raw_cols):
return zip(*(iter(raw_cols),) * 3 + (_infinite_gen(1.0),)) # We need a fake alpha...
t_lc = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops) * 3
for colindex, collayer in enumerate(me.vertex_colors):
collayer.data.foreach_get("color", t_lc)
lay_vcol = elem_data_single_int32(geom, b"LayerElementColor", colindex)
elem_data_single_int32(lay_vcol, b"Version", FBX_GEOMETRY_VCOLOR_VERSION)
elem_data_single_string_unicode(lay_vcol, b"Name", collayer.name)
elem_data_single_string(lay_vcol, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_vcol, b"ReferenceInformationType", b"IndexToDirect")
col2idx = tuple(set(_coltuples_gen(t_lc)))
elem_data_single_float64_array(lay_vcol, b"Colors", chain(*col2idx)) # Flatten again...
col2idx = {col: idx for idx, col in enumerate(col2idx)}
elem_data_single_int32_array(lay_vcol, b"ColorIndex", (col2idx[c] for c in _coltuples_gen(t_lc)))
del col2idx
del t_lc
del _coltuples_gen
# Write UV layers.
# Note: LayerElementTexture is deprecated since FBX 2011 - luckily!
# Textures are now only related to materials, in FBX!
uvnumber = len(me.uv_layers)
if uvnumber:
def _uvtuples_gen(raw_uvs):
return zip(*(iter(raw_uvs),) * 2)
t_luv = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops) * 2
for uvindex, uvlayer in enumerate(me.uv_layers):
uvlayer.data.foreach_get("uv", t_luv)
lay_uv = elem_data_single_int32(geom, b"LayerElementUV", uvindex)
elem_data_single_int32(lay_uv, b"Version", FBX_GEOMETRY_UV_VERSION)
elem_data_single_string_unicode(lay_uv, b"Name", uvlayer.name)
elem_data_single_string(lay_uv, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_uv, b"ReferenceInformationType", b"IndexToDirect")
uv2idx = tuple(set(_uvtuples_gen(t_luv)))
elem_data_single_float64_array(lay_uv, b"UV", chain(*uv2idx)) # Flatten again...
uv2idx = {uv: idx for idx, uv in enumerate(uv2idx)}
elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv)))
del uv2idx
del t_luv
del _uvtuples_gen
# Face's materials.
me_fbxmats_idx = scene_data.mesh_mat_indices.get(me)
if me_fbxmats_idx is not None:
me_blmats = me.materials
if me_fbxmats_idx and me_blmats:
lay_mat = elem_data_single_int32(geom, b"LayerElementMaterial", 0)
elem_data_single_int32(lay_mat, b"Version", FBX_GEOMETRY_MATERIAL_VERSION)
elem_data_single_string(lay_mat, b"Name", b"")
nbr_mats = len(me_fbxmats_idx)
if nbr_mats > 1:
t_pm = array.array(data_types.ARRAY_INT32, (0,)) * len(me.polygons)
me.polygons.foreach_get("material_index", t_pm)
# We have to validate mat indices, and map them to FBX indices.
# Note a mat might not be in me_fbxmats_idx (e.g. node mats are ignored).
blmats_to_fbxmats_idxs = [me_fbxmats_idx[m] for m in me_blmats if m in me_fbxmats_idx]
mat_idx_limit = len(blmats_to_fbxmats_idxs)
def_mat = blmats_to_fbxmats_idxs[0]
_gen = (blmats_to_fbxmats_idxs[m] if m < mat_idx_limit else def_mat for m in t_pm)
t_pm = array.array(data_types.ARRAY_INT32, _gen)
elem_data_single_string(lay_mat, b"MappingInformationType", b"ByPolygon")
# XXX Logically, should be "Direct" reference type, since we do not have any index array, and have one
# value per polygon...
# But looks like FBX expects it to be IndexToDirect here (maybe because materials are already
# indices??? *sigh*).
elem_data_single_string(lay_mat, b"ReferenceInformationType", b"IndexToDirect")
elem_data_single_int32_array(lay_mat, b"Materials", t_pm)
del t_pm
else:
elem_data_single_string(lay_mat, b"MappingInformationType", b"AllSame")
elem_data_single_string(lay_mat, b"ReferenceInformationType", b"IndexToDirect")
elem_data_single_int32_array(lay_mat, b"Materials", [0])
# And the "layer TOC"...
layer = elem_data_single_int32(geom, b"Layer", 0)
elem_data_single_int32(layer, b"Version", FBX_GEOMETRY_LAYER_VERSION)
if write_normals:
lay_nor = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_nor, b"Type", b"LayerElementNormal")
elem_data_single_int32(lay_nor, b"TypedIndex", 0)
if tspacenumber:
lay_binor = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_binor, b"Type", b"LayerElementBinormal")
elem_data_single_int32(lay_binor, b"TypedIndex", 0)
lay_tan = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_tan, b"Type", b"LayerElementTangent")
elem_data_single_int32(lay_tan, b"TypedIndex", 0)
if smooth_type in {'FACE', 'EDGE'}:
lay_smooth = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_smooth, b"Type", b"LayerElementSmoothing")
elem_data_single_int32(lay_smooth, b"TypedIndex", 0)
if vcolnumber:
lay_vcol = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_vcol, b"Type", b"LayerElementColor")
elem_data_single_int32(lay_vcol, b"TypedIndex", 0)
if uvnumber:
lay_uv = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_uv, b"Type", b"LayerElementUV")
elem_data_single_int32(lay_uv, b"TypedIndex", 0)
if me_fbxmats_idx is not None:
lay_mat = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_mat, b"Type", b"LayerElementMaterial")
elem_data_single_int32(lay_mat, b"TypedIndex", 0)
# Add other uv and/or vcol layers...
for vcolidx, uvidx, tspaceidx in zip_longest(range(1, vcolnumber), range(1, uvnumber), range(1, tspacenumber),
fillvalue=0):
layer = elem_data_single_int32(geom, b"Layer", max(vcolidx, uvidx))
elem_data_single_int32(layer, b"Version", FBX_GEOMETRY_LAYER_VERSION)
if vcolidx:
lay_vcol = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_vcol, b"Type", b"LayerElementColor")
elem_data_single_int32(lay_vcol, b"TypedIndex", vcolidx)
if uvidx:
lay_uv = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_uv, b"Type", b"LayerElementUV")
elem_data_single_int32(lay_uv, b"TypedIndex", uvidx)
if tspaceidx:
lay_binor = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_binor, b"Type", b"LayerElementBinormal")
elem_data_single_int32(lay_binor, b"TypedIndex", tspaceidx)
lay_tan = elem_empty(layer, b"LayerElement")
elem_data_single_string(lay_tan, b"Type", b"LayerElementTangent")
elem_data_single_int32(lay_tan, b"TypedIndex", tspaceidx)
# Shape keys...
fbx_data_mesh_shapes_elements(root, me_obj, me, scene_data, tmpl, props)
elem_props_template_finalize(tmpl, props)
done_meshes.add(me_key)
def check_skip_material(mat):
"""Simple helper to check whether we actually support exporting that material or not"""
return mat.type not in {'SURFACE'} or mat.use_nodes
def fbx_data_material_elements(root, mat, scene_data):
"""
Write the Material data block.
"""
ambient_color = (0.0, 0.0, 0.0)
if scene_data.data_world:
ambient_color = next(iter(scene_data.data_world.keys())).ambient_color
mat_key, _objs = scene_data.data_materials[mat]
skip_mat = check_skip_material(mat)
mat_type = b"Phong"
# Approximation...
if not skip_mat and mat.specular_shader not in {'COOKTORR', 'PHONG', 'BLINN'}:
mat_type = b"Lambert"
fbx_mat = elem_data_single_int64(root, b"Material", get_fbx_uuid_from_key(mat_key))
fbx_mat.add_string(fbx_name_class(mat.name.encode(), b"Material"))
fbx_mat.add_string(b"")
elem_data_single_int32(fbx_mat, b"Version", FBX_MATERIAL_VERSION)
# those are not yet properties, it seems...
elem_data_single_string(fbx_mat, b"ShadingModel", mat_type)
elem_data_single_int32(fbx_mat, b"MultiLayer", 0) # Should be bool...
tmpl = elem_props_template_init(scene_data.templates, b"Material")
props = elem_properties(fbx_mat)
if not skip_mat:
elem_props_template_set(tmpl, props, "p_string", b"ShadingModel", mat_type.decode())
elem_props_template_set(tmpl, props, "p_color", b"EmissiveColor", mat.diffuse_color)
elem_props_template_set(tmpl, props, "p_number", b"EmissiveFactor", mat.emit)
elem_props_template_set(tmpl, props, "p_color", b"AmbientColor", ambient_color)
elem_props_template_set(tmpl, props, "p_number", b"AmbientFactor", mat.ambient)
elem_props_template_set(tmpl, props, "p_color", b"DiffuseColor", mat.diffuse_color)
elem_props_template_set(tmpl, props, "p_number", b"DiffuseFactor", mat.diffuse_intensity)
elem_props_template_set(tmpl, props, "p_color", b"TransparentColor",
mat.diffuse_color if mat.use_transparency else (1.0, 1.0, 1.0))
elem_props_template_set(tmpl, props, "p_number", b"TransparencyFactor",
1.0 - mat.alpha if mat.use_transparency else 0.0)
elem_props_template_set(tmpl, props, "p_number", b"Opacity", mat.alpha if mat.use_transparency else 1.0)
elem_props_template_set(tmpl, props, "p_vector_3d", b"NormalMap", (0.0, 0.0, 0.0))
# Not sure about those...
"""
b"Bump": ((0.0, 0.0, 0.0), "p_vector_3d"),
b"BumpFactor": (1.0, "p_double"),
b"DisplacementColor": ((0.0, 0.0, 0.0), "p_color_rgb"),
b"DisplacementFactor": (0.0, "p_double"),
"""
if mat_type == b"Phong":
elem_props_template_set(tmpl, props, "p_color", b"SpecularColor", mat.specular_color)
elem_props_template_set(tmpl, props, "p_number", b"SpecularFactor", mat.specular_intensity / 2.0)
# See Material template about those two!
elem_props_template_set(tmpl, props, "p_number", b"Shininess", (mat.specular_hardness - 1.0) / 5.10)
elem_props_template_set(tmpl, props, "p_number", b"ShininessExponent", (mat.specular_hardness - 1.0) / 5.10)
elem_props_template_set(tmpl, props, "p_color", b"ReflectionColor", mat.mirror_color)
elem_props_template_set(tmpl, props, "p_number", b"ReflectionFactor",
mat.raytrace_mirror.reflect_factor if mat.raytrace_mirror.use else 0.0)
elem_props_template_finalize(tmpl, props)
# Custom properties.
if scene_data.settings.use_custom_props:
fbx_data_element_custom_properties(props, mat)
def _gen_vid_path(img, scene_data):
msetts = scene_data.settings.media_settings
fname_rel = bpy_extras.io_utils.path_reference(img.filepath, msetts.base_src, msetts.base_dst, msetts.path_mode,
msetts.subdir, msetts.copy_set, img.library)
fname_abs = os.path.normpath(os.path.abspath(os.path.join(msetts.base_dst, fname_rel)))
return fname_abs, fname_rel
def fbx_data_texture_file_elements(root, tex, scene_data):
"""
Write the (file) Texture data block.
"""
# XXX All this is very fuzzy to me currently...
# Textures do not seem to use properties as much as they could.
# For now assuming most logical and simple stuff.
tex_key, _mats = scene_data.data_textures[tex]
img = tex.texture.image
fname_abs, fname_rel = _gen_vid_path(img, scene_data)
fbx_tex = elem_data_single_int64(root, b"Texture", get_fbx_uuid_from_key(tex_key))
fbx_tex.add_string(fbx_name_class(tex.name.encode(), b"Texture"))
fbx_tex.add_string(b"")
elem_data_single_string(fbx_tex, b"Type", b"TextureVideoClip")
elem_data_single_int32(fbx_tex, b"Version", FBX_TEXTURE_VERSION)
elem_data_single_string(fbx_tex, b"TextureName", fbx_name_class(tex.name.encode(), b"Texture"))
elem_data_single_string(fbx_tex, b"Media", fbx_name_class(img.name.encode(), b"Video"))
elem_data_single_string_unicode(fbx_tex, b"FileName", fname_abs)
elem_data_single_string_unicode(fbx_tex, b"RelativeFilename", fname_rel)
alpha_source = 0 # None
if img.use_alpha:
if tex.texture.use_calculate_alpha:
alpha_source = 1 # RGBIntensity as alpha.
else:
alpha_source = 2 # Black, i.e. alpha channel.
# BlendMode not useful for now, only affects layered textures afaics.
mapping = 0 # UV.
uvset = None
if tex.texture_coords in {'ORCO'}: # XXX Others?
if tex.mapping in {'FLAT'}:
mapping = 1 # Planar
elif tex.mapping in {'CUBE'}:
mapping = 4 # Box
elif tex.mapping in {'TUBE'}:
mapping = 3 # Cylindrical
elif tex.mapping in {'SPHERE'}:
mapping = 2 # Spherical
elif tex.texture_coords in {'UV'}:
mapping = 0 # UV
# Yuck, UVs are linked by mere names it seems... :/
uvset = tex.uv_layer
wrap_mode = 1 # Clamp
if tex.texture.extension in {'REPEAT'}:
wrap_mode = 0 # Repeat
tmpl = elem_props_template_init(scene_data.templates, b"TextureFile")
props = elem_properties(fbx_tex)
elem_props_template_set(tmpl, props, "p_enum", b"AlphaSource", alpha_source)
elem_props_template_set(tmpl, props, "p_bool", b"PremultiplyAlpha",
img.alpha_mode in {'STRAIGHT'}) # Or is it PREMUL?
elem_props_template_set(tmpl, props, "p_enum", b"CurrentMappingType", mapping)
if uvset is not None:
elem_props_template_set(tmpl, props, "p_string", b"UVSet", uvset)
elem_props_template_set(tmpl, props, "p_enum", b"WrapModeU", wrap_mode)
elem_props_template_set(tmpl, props, "p_enum", b"WrapModeV", wrap_mode)
elem_props_template_set(tmpl, props, "p_vector_3d", b"Translation", tex.offset)
elem_props_template_set(tmpl, props, "p_vector_3d", b"Scaling", tex.scale)
# UseMaterial should always be ON imho.
elem_props_template_set(tmpl, props, "p_bool", b"UseMaterial", True)
elem_props_template_set(tmpl, props, "p_bool", b"UseMipMap", tex.texture.use_mipmap)
elem_props_template_finalize(tmpl, props)
# Custom properties.
if scene_data.settings.use_custom_props:
fbx_data_element_custom_properties(props, tex.texture)
def fbx_data_video_elements(root, vid, scene_data):
"""
Write the actual image data block.
"""
msetts = scene_data.settings.media_settings
vid_key, _texs = scene_data.data_videos[vid]
fname_abs, fname_rel = _gen_vid_path(vid, scene_data)
fbx_vid = elem_data_single_int64(root, b"Video", get_fbx_uuid_from_key(vid_key))
fbx_vid.add_string(fbx_name_class(vid.name.encode(), b"Video"))
fbx_vid.add_string(b"Clip")
elem_data_single_string(fbx_vid, b"Type", b"Clip")
# XXX No Version???
tmpl = elem_props_template_init(scene_data.templates, b"Video")
props = elem_properties(fbx_vid)
elem_props_template_set(tmpl, props, "p_string_url", b"Path", fname_abs)
elem_props_template_finalize(tmpl, props)
elem_data_single_int32(fbx_vid, b"UseMipMap", 0)
elem_data_single_string_unicode(fbx_vid, b"Filename", fname_abs)
elem_data_single_string_unicode(fbx_vid, b"RelativeFilename", fname_rel)
if scene_data.settings.media_settings.embed_textures:
if vid.packed_file is not None:
# We only ever embed a given file once!
if fname_abs not in msetts.embedded_set:
elem_data_single_bytes(fbx_vid, b"Content", vid.packed_file.data)
msetts.embedded_set.add(fname_abs)
else:
filepath = bpy.path.abspath(vid.filepath)
# We only ever embed a given file once!
if filepath not in msetts.embedded_set:
try:
with open(filepath, 'br') as f:
elem_data_single_bytes(fbx_vid, b"Content", f.read())
except Exception as e:
print("WARNING: embedding file {} failed ({})".format(filepath, e))
elem_data_single_bytes(fbx_vid, b"Content", b"")
msetts.embedded_set.add(filepath)
# Looks like we'd rather not write any 'Content' element in this case (see T44442).
# Sounds suspect, but let's try it!
#~ else:
#~ elem_data_single_bytes(fbx_vid, b"Content", b"")
def fbx_data_armature_elements(root, arm_obj, scene_data):
"""
Write:
* Bones "data" (NodeAttribute::LimbNode, contains pretty much nothing!).
* Deformers (i.e. Skin), bind between an armature and a mesh.
** SubDeformers (i.e. Cluster), one per bone/vgroup pair.
* BindPose.
Note armature itself has no data, it is a mere "Null" Model...
"""
mat_world_arm = arm_obj.fbx_object_matrix(scene_data, global_space=True)
bones = tuple(bo_obj for bo_obj in arm_obj.bones if bo_obj in scene_data.objects)
bone_radius_scale = 33.0
# Bones "data".
for bo_obj in bones:
bo = bo_obj.bdata
bo_data_key = scene_data.data_bones[bo_obj]
fbx_bo = elem_data_single_int64(root, b"NodeAttribute", get_fbx_uuid_from_key(bo_data_key))
fbx_bo.add_string(fbx_name_class(bo.name.encode(), b"NodeAttribute"))
fbx_bo.add_string(b"LimbNode")
elem_data_single_string(fbx_bo, b"TypeFlags", b"Skeleton")
tmpl = elem_props_template_init(scene_data.templates, b"Bone")
props = elem_properties(fbx_bo)
elem_props_template_set(tmpl, props, "p_double", b"Size", bo.head_radius * bone_radius_scale)
elem_props_template_finalize(tmpl, props)
# Custom properties.
if scene_data.settings.use_custom_props:
fbx_data_element_custom_properties(props, bo)
# Store Blender bone length - XXX Not much useful actually :/
# (LimbLength can't be used because it is a scale factor 0-1 for the parent-child distance:
# http://docs.autodesk.com/FBX/2014/ENU/FBX-SDK-Documentation/cpp_ref/class_fbx_skeleton.html#a9bbe2a70f4ed82cd162620259e649f0f )
# elem_props_set(props, "p_double", "BlenderBoneLength".encode(), (bo.tail_local - bo.head_local).length, custom=True)
# Skin deformers and BindPoses.
# Note: we might also use Deformers for our "parent to vertex" stuff???
deformer = scene_data.data_deformers_skin.get(arm_obj, None)
if deformer is not None:
for me, (skin_key, ob_obj, clusters) in deformer.items():
# BindPose.
mat_world_obj, mat_world_bones = fbx_data_bindpose_element(root, ob_obj, me, scene_data,
arm_obj, mat_world_arm, bones)
# Deformer.
fbx_skin = elem_data_single_int64(root, b"Deformer", get_fbx_uuid_from_key(skin_key))
fbx_skin.add_string(fbx_name_class(arm_obj.name.encode(), b"Deformer"))
fbx_skin.add_string(b"Skin")
elem_data_single_int32(fbx_skin, b"Version", FBX_DEFORMER_SKIN_VERSION)
elem_data_single_float64(fbx_skin, b"Link_DeformAcuracy", 50.0) # Only vague idea what it is...
# Pre-process vertex weights (also to check vertices assigned ot more than four bones).
ob = ob_obj.bdata
bo_vg_idx = {bo_obj.bdata.name: ob.vertex_groups[bo_obj.bdata.name].index
for bo_obj in clusters.keys() if bo_obj.bdata.name in ob.vertex_groups}
valid_idxs = set(bo_vg_idx.values())
vgroups = {vg.index: OrderedDict() for vg in ob.vertex_groups}
verts_vgroups = (sorted(((vg.group, vg.weight) for vg in v.groups if vg.weight and vg.group in valid_idxs),
key=lambda e: e[1], reverse=True)
for v in me.vertices)
for idx, vgs in enumerate(verts_vgroups):
for vg_idx, w in vgs:
vgroups[vg_idx][idx] = w
for bo_obj, clstr_key in clusters.items():
bo = bo_obj.bdata
# Find which vertices are affected by this bone/vgroup pair, and matching weights.
# Note we still write a cluster for bones not affecting the mesh, to get 'rest pose' data
# (the TransformBlah matrices).
vg_idx = bo_vg_idx.get(bo.name, None)
indices, weights = ((), ()) if vg_idx is None or not vgroups[vg_idx] else zip(*vgroups[vg_idx].items())
# Create the cluster.
fbx_clstr = elem_data_single_int64(root, b"Deformer", get_fbx_uuid_from_key(clstr_key))
fbx_clstr.add_string(fbx_name_class(bo.name.encode(), b"SubDeformer"))
fbx_clstr.add_string(b"Cluster")
elem_data_single_int32(fbx_clstr, b"Version", FBX_DEFORMER_CLUSTER_VERSION)
# No idea what that user data might be...
fbx_userdata = elem_data_single_string(fbx_clstr, b"UserData", b"")
fbx_userdata.add_string(b"")
if indices:
elem_data_single_int32_array(fbx_clstr, b"Indexes", indices)
elem_data_single_float64_array(fbx_clstr, b"Weights", weights)
# Transform, TransformLink and TransformAssociateModel matrices...
# They seem to be doublons of BindPose ones??? Have armature (associatemodel) in addition, though.
# WARNING! Even though official FBX API presents Transform in global space,
# **it is stored in bone space in FBX data!** See:
# http://area.autodesk.com/forum/autodesk-fbx/fbx-sdk/why-the-values-return-
# by-fbxcluster-gettransformmatrix-x-not-same-with-the-value-in-ascii-fbx-file/
elem_data_single_float64_array(fbx_clstr, b"Transform",
matrix4_to_array(mat_world_bones[bo_obj].inverted_safe() * mat_world_obj))
elem_data_single_float64_array(fbx_clstr, b"TransformLink", matrix4_to_array(mat_world_bones[bo_obj]))
elem_data_single_float64_array(fbx_clstr, b"TransformAssociateModel", matrix4_to_array(mat_world_arm))
def fbx_data_leaf_bone_elements(root, scene_data):
# Write a dummy leaf bone that is used by applications to show the length of the last bone in a chain
for (node_name, _par_uuid, node_uuid, attr_uuid, matrix, hide, size) in scene_data.data_leaf_bones:
# Bone 'data'...
fbx_bo = elem_data_single_int64(root, b"NodeAttribute", attr_uuid)
fbx_bo.add_string(fbx_name_class(node_name.encode(), b"NodeAttribute"))
fbx_bo.add_string(b"LimbNode")
elem_data_single_string(fbx_bo, b"TypeFlags", b"Skeleton")
tmpl = elem_props_template_init(scene_data.templates, b"Bone")
props = elem_properties(fbx_bo)
elem_props_template_set(tmpl, props, "p_double", b"Size", size)
elem_props_template_finalize(tmpl, props)
# And bone object.
model = elem_data_single_int64(root, b"Model", node_uuid)
model.add_string(fbx_name_class(node_name.encode(), b"Model"))
model.add_string(b"LimbNode")
elem_data_single_int32(model, b"Version", FBX_MODELS_VERSION)
# Object transform info.
loc, rot, scale = matrix.decompose()
rot = rot.to_euler('XYZ')
rot = tuple(convert_rad_to_deg_iter(rot))
tmpl = elem_props_template_init(scene_data.templates, b"Model")
# For now add only loc/rot/scale...
props = elem_properties(model)
# Generated leaf bones are obviously never animated!
elem_props_template_set(tmpl, props, "p_lcl_translation", b"Lcl Translation", loc)
elem_props_template_set(tmpl, props, "p_lcl_rotation", b"Lcl Rotation", rot)
elem_props_template_set(tmpl, props, "p_lcl_scaling", b"Lcl Scaling", scale)
elem_props_template_set(tmpl, props, "p_visibility", b"Visibility", float(not hide))
# Absolutely no idea what this is, but seems mandatory for validity of the file, and defaults to
# invalid -1 value...
elem_props_template_set(tmpl, props, "p_integer", b"DefaultAttributeIndex", 0)
elem_props_template_set(tmpl, props, "p_enum", b"InheritType", 1) # RSrs
# Those settings would obviously need to be edited in a complete version of the exporter, may depends on
# object type, etc.
elem_data_single_int32(model, b"MultiLayer", 0)
elem_data_single_int32(model, b"MultiTake", 0)
elem_data_single_bool(model, b"Shading", True)
elem_data_single_string(model, b"Culling", b"CullingOff")
elem_props_template_finalize(tmpl, props)
def fbx_data_object_elements(root, ob_obj, scene_data):
"""
Write the Object (Model) data blocks.
Note this "Model" can also be bone or dupli!
"""
obj_type = b"Null" # default, sort of empty...
if ob_obj.is_bone:
obj_type = b"LimbNode"
elif (ob_obj.type == 'ARMATURE'):
#~ obj_type = b"Root"
obj_type = b"Null"
elif (ob_obj.type in BLENDER_OBJECT_TYPES_MESHLIKE):
obj_type = b"Mesh"
elif (ob_obj.type == 'LAMP'):
obj_type = b"Light"
elif (ob_obj.type == 'CAMERA'):
obj_type = b"Camera"
model = elem_data_single_int64(root, b"Model", ob_obj.fbx_uuid)
model.add_string(fbx_name_class(ob_obj.name.encode(), b"Model"))
model.add_string(obj_type)
elem_data_single_int32(model, b"Version", FBX_MODELS_VERSION)
# Object transform info.
loc, rot, scale, matrix, matrix_rot = ob_obj.fbx_object_tx(scene_data)
rot = tuple(convert_rad_to_deg_iter(rot))
tmpl = elem_props_template_init(scene_data.templates, b"Model")
# For now add only loc/rot/scale...
props = elem_properties(model)
elem_props_template_set(tmpl, props, "p_lcl_translation", b"Lcl Translation", loc,
animatable=True, animated=((ob_obj.key, "Lcl Translation") in scene_data.animated))
elem_props_template_set(tmpl, props, "p_lcl_rotation", b"Lcl Rotation", rot,
animatable=True, animated=((ob_obj.key, "Lcl Rotation") in scene_data.animated))
elem_props_template_set(tmpl, props, "p_lcl_scaling", b"Lcl Scaling", scale,
animatable=True, animated=((ob_obj.key, "Lcl Scaling") in scene_data.animated))
elem_props_template_set(tmpl, props, "p_visibility", b"Visibility", float(not ob_obj.hide))
# Absolutely no idea what this is, but seems mandatory for validity of the file, and defaults to
# invalid -1 value...
elem_props_template_set(tmpl, props, "p_integer", b"DefaultAttributeIndex", 0)
elem_props_template_set(tmpl, props, "p_enum", b"InheritType", 1) # RSrs
# Custom properties.
if scene_data.settings.use_custom_props:
fbx_data_element_custom_properties(props, ob_obj.bdata)
# Those settings would obviously need to be edited in a complete version of the exporter, may depends on
# object type, etc.
elem_data_single_int32(model, b"MultiLayer", 0)
elem_data_single_int32(model, b"MultiTake", 0)
elem_data_single_bool(model, b"Shading", True)
elem_data_single_string(model, b"Culling", b"CullingOff")
if obj_type == b"Camera":
# Why, oh why are FBX cameras such a mess???
# And WHY add camera data HERE??? Not even sure this is needed...
render = scene_data.scene.render
width = render.resolution_x * 1.0
height = render.resolution_y * 1.0
elem_props_template_set(tmpl, props, "p_enum", b"ResolutionMode", 0) # Don't know what it means
elem_props_template_set(tmpl, props, "p_double", b"AspectW", width)
elem_props_template_set(tmpl, props, "p_double", b"AspectH", height)
elem_props_template_set(tmpl, props, "p_bool", b"ViewFrustum", True)
elem_props_template_set(tmpl, props, "p_enum", b"BackgroundMode", 0) # Don't know what it means
elem_props_template_set(tmpl, props, "p_bool", b"ForegroundTransparent", True)
elem_props_template_finalize(tmpl, props)
def fbx_data_animation_elements(root, scene_data):
"""
Write animation data.
"""
animations = scene_data.animations
if not animations:
return
scene = scene_data.scene
fps = scene.render.fps / scene.render.fps_base
def keys_to_ktimes(keys):
return (int(v) for v in convert_sec_to_ktime_iter((f / fps for f, _v in keys)))
# Animation stacks.
for astack_key, alayers, alayer_key, name, f_start, f_end in animations:
astack = elem_data_single_int64(root, b"AnimationStack", get_fbx_uuid_from_key(astack_key))
astack.add_string(fbx_name_class(name, b"AnimStack"))
astack.add_string(b"")
astack_tmpl = elem_props_template_init(scene_data.templates, b"AnimationStack")
astack_props = elem_properties(astack)
r = scene_data.scene.render
fps = r.fps / r.fps_base
start = int(convert_sec_to_ktime(f_start / fps))
end = int(convert_sec_to_ktime(f_end / fps))
elem_props_template_set(astack_tmpl, astack_props, "p_timestamp", b"LocalStart", start)
elem_props_template_set(astack_tmpl, astack_props, "p_timestamp", b"LocalStop", end)
elem_props_template_set(astack_tmpl, astack_props, "p_timestamp", b"ReferenceStart", start)
elem_props_template_set(astack_tmpl, astack_props, "p_timestamp", b"ReferenceStop", end)
elem_props_template_finalize(astack_tmpl, astack_props)
# For now, only one layer for all animations.
alayer = elem_data_single_int64(root, b"AnimationLayer", get_fbx_uuid_from_key(alayer_key))
alayer.add_string(fbx_name_class(name, b"AnimLayer"))
alayer.add_string(b"")
for ob_obj, (alayer_key, acurvenodes) in alayers.items():
# Animation layer.
# alayer = elem_data_single_int64(root, b"AnimationLayer", get_fbx_uuid_from_key(alayer_key))
# alayer.add_string(fbx_name_class(ob_obj.name.encode(), b"AnimLayer"))
# alayer.add_string(b"")
for fbx_prop, (acurvenode_key, acurves, acurvenode_name) in acurvenodes.items():
# Animation curve node.
acurvenode = elem_data_single_int64(root, b"AnimationCurveNode", get_fbx_uuid_from_key(acurvenode_key))
acurvenode.add_string(fbx_name_class(acurvenode_name.encode(), b"AnimCurveNode"))
acurvenode.add_string(b"")
acn_tmpl = elem_props_template_init(scene_data.templates, b"AnimationCurveNode")
acn_props = elem_properties(acurvenode)
for fbx_item, (acurve_key, def_value, keys, _acurve_valid) in acurves.items():
elem_props_template_set(acn_tmpl, acn_props, "p_number", fbx_item.encode(),
def_value, animatable=True)
# Only create Animation curve if needed!
if keys:
acurve = elem_data_single_int64(root, b"AnimationCurve", get_fbx_uuid_from_key(acurve_key))
acurve.add_string(fbx_name_class(b"", b"AnimCurve"))
acurve.add_string(b"")
# key attributes...
nbr_keys = len(keys)
# flags...
keyattr_flags = (
1 << 2 | # interpolation mode, 1 = constant, 2 = linear, 3 = cubic.
1 << 8 | # tangent mode, 8 = auto, 9 = TCB, 10 = user, 11 = generic break,
1 << 13 | # tangent mode, 12 = generic clamp, 13 = generic time independent,
1 << 14 | # tangent mode, 13 + 14 = generic clamp progressive.
0,
)
# Maybe values controlling TCB & co???
keyattr_datafloat = (0.0, 0.0, 9.419963346924634e-30, 0.0)
# And now, the *real* data!
elem_data_single_float64(acurve, b"Default", def_value)
elem_data_single_int32(acurve, b"KeyVer", FBX_ANIM_KEY_VERSION)
elem_data_single_int64_array(acurve, b"KeyTime", keys_to_ktimes(keys))
elem_data_single_float32_array(acurve, b"KeyValueFloat", (v for _f, v in keys))
elem_data_single_int32_array(acurve, b"KeyAttrFlags", keyattr_flags)
elem_data_single_float32_array(acurve, b"KeyAttrDataFloat", keyattr_datafloat)
elem_data_single_int32_array(acurve, b"KeyAttrRefCount", (nbr_keys,))
elem_props_template_finalize(acn_tmpl, acn_props)
# ##### Top-level FBX data container. #####
def fbx_mat_properties_from_texture(tex):
"""
Returns a set of FBX metarial properties that are affected by the given texture.
Quite obviously, this is a fuzzy and far-from-perfect mapping! Amounts of influence are completely lost, e.g.
Note tex is actually expected to be a texture slot.
"""
# Mapping Blender -> FBX (blend_use_name, blend_fact_name, fbx_name).
blend_to_fbx = (
# Lambert & Phong...
("diffuse", "diffuse", b"DiffuseFactor"),
("color_diffuse", "diffuse_color", b"DiffuseColor"),
("alpha", "alpha", b"TransparencyFactor"),
("diffuse", "diffuse", b"TransparentColor"), # Uses diffuse color in Blender!
("emit", "emit", b"EmissiveFactor"),
("diffuse", "diffuse", b"EmissiveColor"), # Uses diffuse color in Blender!
("ambient", "ambient", b"AmbientFactor"),
# ("", "", b"AmbientColor"), # World stuff in Blender, for now ignore...
("normal", "normal", b"NormalMap"),
# Note: unsure about those... :/
# ("", "", b"Bump"),
# ("", "", b"BumpFactor"),
# ("", "", b"DisplacementColor"),
# ("", "", b"DisplacementFactor"),
# Phong only.
("specular", "specular", b"SpecularFactor"),
("color_spec", "specular_color", b"SpecularColor"),
# See Material template about those two!
("hardness", "hardness", b"Shininess"),
("hardness", "hardness", b"ShininessExponent"),
("mirror", "mirror", b"ReflectionColor"),
("raymir", "raymir", b"ReflectionFactor"),
)
tex_fbx_props = set()
for use_map_name, name_factor, fbx_prop_name in blend_to_fbx:
# Always export enabled textures, even if they have a null influence...
if getattr(tex, "use_map_" + use_map_name):
tex_fbx_props.add(fbx_prop_name)
return tex_fbx_props
def fbx_skeleton_from_armature(scene, settings, arm_obj, objects, data_meshes,
data_bones, data_deformers_skin, data_empties, arm_parents):
"""
Create skeleton from armature/bones (NodeAttribute/LimbNode and Model/LimbNode), and for each deformed mesh,
create Pose/BindPose(with sub PoseNode) and Deformer/Skin(with Deformer/SubDeformer/Cluster).
Also supports "parent to bone" (simple parent to Model/LimbNode).
arm_parents is a set of tuples (armature, object) for all successful armature bindings.
"""
# We need some data for our armature 'object' too!!!
data_empties[arm_obj] = get_blender_empty_key(arm_obj.bdata)
arm_data = arm_obj.bdata.data
bones = OrderedDict()
for bo in arm_obj.bones:
if settings.use_armature_deform_only:
if bo.bdata.use_deform:
bones[bo] = True
bo_par = bo.parent
while bo_par.is_bone:
bones[bo_par] = True
bo_par = bo_par.parent
elif bo not in bones: # Do not override if already set in the loop above!
bones[bo] = False
else:
bones[bo] = True
bones = OrderedDict((bo, None) for bo, use in bones.items() if use)
if not bones:
return
data_bones.update((bo, get_blender_bone_key(arm_obj.bdata, bo.bdata)) for bo in bones)
for ob_obj in objects:
if not ob_obj.is_deformed_by_armature(arm_obj):
continue
# Always handled by an Armature modifier...
found = False
for mod in ob_obj.bdata.modifiers:
if mod.type not in {'ARMATURE'}:
continue
# We only support vertex groups binding method, not bone envelopes one!
if mod.object == arm_obj.bdata and mod.use_vertex_groups:
found = True
break
if not found:
continue
# Now we have a mesh using this armature.
# Note: bindpose have no relations at all (no connections), so no need for any preprocess for them.
# Create skin & clusters relations (note skins are connected to geometry, *not* model!).
_key, me, _free = data_meshes[ob_obj]
clusters = OrderedDict((bo, get_blender_bone_cluster_key(arm_obj.bdata, me, bo.bdata)) for bo in bones)
data_deformers_skin.setdefault(arm_obj, OrderedDict())[me] = (get_blender_armature_skin_key(arm_obj.bdata, me),
ob_obj, clusters)
# We don't want a regular parent relationship for those in FBX...
arm_parents.add((arm_obj, ob_obj))
# Needed to handle matrices/spaces (since we do not parent them to 'armature' in FBX :/ ).
ob_obj.parented_to_armature = True
objects.update(bones)
def fbx_generate_leaf_bones(settings, data_bones):
# find which bons have no children
child_count = {bo: 0 for bo, _bo_key in data_bones.items()}
for bo, _bo_key in data_bones.items():
if bo.parent and bo.parent.is_bone:
child_count[bo.parent] += 1
bone_radius_scale = settings.global_scale * 33.0
# generate bone data
leaf_parents = [bo for bo, count in child_count.items() if count == 0]
leaf_bones = []
for parent in leaf_parents:
node_name = parent.name + "_end"
parent_uuid = parent.fbx_uuid
node_uuid = get_fbx_uuid_from_key(node_name + "_node")
attr_uuid = get_fbx_uuid_from_key(node_name + "_nodeattr")
hide = parent.hide
size = parent.bdata.head_radius * bone_radius_scale
bone_length = (parent.bdata.tail_local - parent.bdata.head_local).length
matrix = Matrix.Translation((0, bone_length, 0))
if settings.bone_correction_matrix_inv:
matrix = settings.bone_correction_matrix_inv * matrix
if settings.bone_correction_matrix:
matrix = matrix * settings.bone_correction_matrix
leaf_bones.append((node_name, parent_uuid, node_uuid, attr_uuid, matrix, hide, size))
return leaf_bones
def fbx_animations_do(scene_data, ref_id, f_start, f_end, start_zero, objects=None, force_keep=False):
"""
Generate animation data (a single AnimStack) from objects, for a given frame range.
"""
bake_step = scene_data.settings.bake_anim_step
scene = scene_data.scene
meshes = scene_data.data_meshes
force_keying = scene_data.settings.bake_anim_use_all_bones
if objects is not None:
# Add bones and duplis!
for ob_obj in tuple(objects):
if not ob_obj.is_object:
continue
if ob_obj.type == 'ARMATURE':
objects |= {bo_obj for bo_obj in ob_obj.bones if bo_obj in scene_data.objects}
ob_obj.dupli_list_create(scene, 'RENDER')
for dp_obj in ob_obj.dupli_list:
if dp_obj in scene_data.objects:
objects.add(dp_obj)
ob_obj.dupli_list_clear()
else:
objects = scene_data.objects
back_currframe = scene.frame_current
animdata_ob = OrderedDict()
p_rots = {}
for ob_obj in objects:
ACNW = AnimationCurveNodeWrapper
loc, rot, scale, _m, _mr = ob_obj.fbx_object_tx(scene_data)
rot_deg = tuple(convert_rad_to_deg_iter(rot))
animdata_ob[ob_obj] = (ACNW(ob_obj.key, 'LCL_TRANSLATION', ob_obj.is_bone and force_keying, loc),
ACNW(ob_obj.key, 'LCL_ROTATION', ob_obj.is_bone and force_keying, rot_deg),
ACNW(ob_obj.key, 'LCL_SCALING', ob_obj.is_bone and force_keying, scale))
p_rots[ob_obj] = rot
animdata_shapes = OrderedDict()
for me, (me_key, _shapes_key, shapes) in scene_data.data_deformers_shape.items():
# Ignore absolute shape keys for now!
if not me.shape_keys.use_relative:
continue
for shape, (channel_key, geom_key, _shape_verts_co, _shape_verts_idx) in shapes.items():
acnode = AnimationCurveNodeWrapper(channel_key, 'SHAPE_KEY', False, (0.0,))
# Sooooo happy to have to twist again like a mad snake... Yes, we need to write those curves twice. :/
acnode.add_group(me_key, shape.name, shape.name, (shape.name,))
animdata_shapes[channel_key] = (acnode, me, shape)
currframe = f_start
while currframe <= f_end:
real_currframe = currframe - f_start if start_zero else currframe
scene.frame_set(int(currframe), currframe - int(currframe))
for ob_obj in animdata_ob:
ob_obj.dupli_list_create(scene, 'RENDER')
for ob_obj, (anim_loc, anim_rot, anim_scale) in animdata_ob.items():
# We compute baked loc/rot/scale for all objects (rot being euler-compat with previous value!).
p_rot = p_rots.get(ob_obj, None)
loc, rot, scale, _m, _mr = ob_obj.fbx_object_tx(scene_data, rot_euler_compat=p_rot)
p_rots[ob_obj] = rot
anim_loc.add_keyframe(real_currframe, loc)
anim_rot.add_keyframe(real_currframe, tuple(convert_rad_to_deg_iter(rot)))
anim_scale.add_keyframe(real_currframe, scale)
for ob_obj in objects:
ob_obj.dupli_list_clear()
for anim_shape, me, shape in animdata_shapes.values():
anim_shape.add_keyframe(real_currframe, (shape.value * 100.0,))
currframe += bake_step
scene.frame_set(back_currframe, 0.0)
animations = OrderedDict()
simplify_fac = scene_data.settings.bake_anim_simplify_factor
# And now, produce final data (usable by FBX export code)
# Objects-like loc/rot/scale...
for ob_obj, anims in animdata_ob.items():
for anim in anims:
anim.simplify(simplify_fac, bake_step, force_keep)
if not anim:
continue
for obj_key, group_key, group, fbx_group, fbx_gname in anim.get_final_data(scene, ref_id, force_keep):
anim_data = animations.get(obj_key)
if anim_data is None:
anim_data = animations[obj_key] = ("dummy_unused_key", OrderedDict())
anim_data[1][fbx_group] = (group_key, group, fbx_gname)
# And meshes' shape keys.
for channel_key, (anim_shape, me, shape) in animdata_shapes.items():
final_keys = OrderedDict()
anim_shape.simplify(simplify_fac, bake_step, force_keep)
if not anim_shape:
continue
for elem_key, group_key, group, fbx_group, fbx_gname in anim_shape.get_final_data(scene, ref_id, force_keep):
anim_data = animations.get(elem_key)
if anim_data is None:
anim_data = animations[elem_key] = ("dummy_unused_key", OrderedDict())
anim_data[1][fbx_group] = (group_key, group, fbx_gname)
astack_key = get_blender_anim_stack_key(scene, ref_id)
alayer_key = get_blender_anim_layer_key(scene, ref_id)
name = (get_blenderID_name(ref_id) if ref_id else scene.name).encode()
if start_zero:
f_end -= f_start
f_start = 0.0
return (astack_key, animations, alayer_key, name, f_start, f_end) if animations else None
def fbx_animations(scene_data):
"""
Generate global animation data from objects.
"""
scene = scene_data.scene
animations = []
animated = set()
frame_start = 1e100
frame_end = -1e100
def add_anim(animations, animated, anim):
nonlocal frame_start, frame_end
if anim is not None:
animations.append(anim)
f_start, f_end = anim[4:6]
if f_start < frame_start:
frame_start = f_start
if f_end > frame_end:
frame_end = f_end
_astack_key, astack, _alayer_key, _name, _fstart, _fend = anim
for elem_key, (alayer_key, acurvenodes) in astack.items():
for fbx_prop, (acurvenode_key, acurves, acurvenode_name) in acurvenodes.items():
animated.add((elem_key, fbx_prop))
# Per-NLA strip animstacks.
if scene_data.settings.bake_anim_use_nla_strips:
strips = []
for ob_obj in scene_data.objects:
# NLA tracks only for objects, not bones!
if not ob_obj.is_object:
continue
ob = ob_obj.bdata # Back to real Blender Object.
if not ob.animation_data:
continue
for track in ob.animation_data.nla_tracks:
if track.mute:
continue
for strip in track.strips:
if strip.mute:
continue
strips.append(strip)
strip.mute = True
for strip in strips:
strip.mute = False
add_anim(animations, animated,
fbx_animations_do(scene_data, strip, strip.frame_start, strip.frame_end, True))
strip.mute = True
for strip in strips:
strip.mute = False
# All actions.
if scene_data.settings.bake_anim_use_all_actions:
def validate_actions(act, path_resolve):
for fc in act.fcurves:
data_path = fc.data_path
if fc.array_index:
data_path = data_path + "[%d]" % fc.array_index
try:
path_resolve(data_path)
except ValueError:
return False # Invalid.
return True # Valid.
def restore_object(ob_to, ob_from):
# Restore org state of object (ugh :/ ).
props = (
'location', 'rotation_quaternion', 'rotation_axis_angle', 'rotation_euler', 'rotation_mode', 'scale',
'delta_location', 'delta_rotation_euler', 'delta_rotation_quaternion', 'delta_scale',
'lock_location', 'lock_rotation', 'lock_rotation_w', 'lock_rotations_4d', 'lock_scale',
'tag', 'layers', 'select', 'track_axis', 'up_axis', 'active_material', 'active_material_index',
'matrix_parent_inverse', 'empty_draw_type', 'empty_draw_size', 'empty_image_offset', 'pass_index',
'color', 'hide', 'hide_select', 'hide_render', 'use_slow_parent', 'slow_parent_offset',
'use_extra_recalc_object', 'use_extra_recalc_data', 'dupli_type', 'use_dupli_frames_speed',
'use_dupli_vertices_rotation', 'use_dupli_faces_scale', 'dupli_faces_scale', 'dupli_group',
'dupli_frames_start', 'dupli_frames_end', 'dupli_frames_on', 'dupli_frames_off',
'draw_type', 'show_bounds', 'draw_bounds_type', 'show_name', 'show_axis', 'show_texture_space',
'show_wire', 'show_all_edges', 'show_transparent', 'show_x_ray',
'show_only_shape_key', 'use_shape_key_edit_mode', 'active_shape_key_index',
)
for p in props:
if not ob_to.is_property_readonly(p):
setattr(ob_to, p, getattr(ob_from, p))
for ob_obj in scene_data.objects:
# Actions only for objects, not bones!
if not ob_obj.is_object:
continue
ob = ob_obj.bdata # Back to real Blender Object.
if not ob.animation_data:
continue # Do not export animations for objects that are absolutely not animated, see T44386.
# We can't play with animdata and actions and get back to org state easily.
# So we have to add a temp copy of the object to the scene, animate it, and remove it... :/
ob_copy = ob.copy()
# Great, have to handle bones as well if needed...
pbones_matrices = [pbo.matrix_basis.copy() for pbo in ob.pose.bones] if ob.type == 'ARMATURE' else ...
org_act = ob.animation_data.action
path_resolve = ob.path_resolve
for act in bpy.data.actions:
# For now, *all* paths in the action must be valid for the object, to validate the action.
# Unless that action was already assigned to the object!
if act != org_act and not validate_actions(act, path_resolve):
continue
ob.animation_data.action = act
frame_start, frame_end = act.frame_range # sic!
add_anim(animations, animated,
fbx_animations_do(scene_data, (ob, act), frame_start, frame_end, True, {ob_obj}, True))
# Ugly! :/
if pbones_matrices is not ...:
for pbo, mat in zip(ob.pose.bones, pbones_matrices):
pbo.matrix_basis = mat.copy()
ob.animation_data.action = org_act
restore_object(ob, ob_copy)
if pbones_matrices is not ...:
for pbo, mat in zip(ob.pose.bones, pbones_matrices):
pbo.matrix_basis = mat.copy()
ob.animation_data.action = org_act
bpy.data.objects.remove(ob_copy)
# Global (containing everything) animstack, only if not exporting NLA strips and/or all actions.
if not scene_data.settings.bake_anim_use_nla_strips and not scene_data.settings.bake_anim_use_all_actions:
add_anim(animations, animated, fbx_animations_do(scene_data, None, scene.frame_start, scene.frame_end, False))
# Be sure to update all matrices back to org state!
scene.frame_set(scene.frame_current, 0.0)
return animations, animated, frame_start, frame_end
def fbx_data_from_scene(scene, settings):
"""
Do some pre-processing over scene's data...
"""
objtypes = settings.object_types
perfmon = PerfMon()
perfmon.level_up()
# ##### Gathering data...
perfmon.step("FBX export prepare: Wrapping Objects...")
# This is rather simple for now, maybe we could end generating templates with most-used values
# instead of default ones?
objects = OrderedDict() # Because we do not have any ordered set...
for ob in settings.context_objects:
if ob.type not in objtypes:
continue
ob_obj = ObjectWrapper(ob)
objects[ob_obj] = None
# Duplis...
ob_obj.dupli_list_create(scene, 'RENDER')
for dp_obj in ob_obj.dupli_list:
objects[dp_obj] = None
ob_obj.dupli_list_clear()
perfmon.step("FBX export prepare: Wrapping Data (lamps, cameras, empties)...")
data_lamps = OrderedDict((ob_obj.bdata.data, get_blenderID_key(ob_obj.bdata.data))
for ob_obj in objects if ob_obj.type == 'LAMP')
# Unfortunately, FBX camera data contains object-level data (like position, orientation, etc.)...
data_cameras = OrderedDict((ob_obj, get_blenderID_key(ob_obj.bdata.data))
for ob_obj in objects if ob_obj.type == 'CAMERA')
# Yep! Contains nothing, but needed!
data_empties = OrderedDict((ob_obj, get_blender_empty_key(ob_obj.bdata))
for ob_obj in objects if ob_obj.type == 'EMPTY')
perfmon.step("FBX export prepare: Wrapping Meshes...")
data_meshes = OrderedDict()
for ob_obj in objects:
if ob_obj.type not in BLENDER_OBJECT_TYPES_MESHLIKE:
continue
ob = ob_obj.bdata
if ob in data_meshes: # Happens with dupli instances.
continue
use_org_data = True
if settings.use_mesh_modifiers or ob.type in BLENDER_OTHER_OBJECT_TYPES:
use_org_data = False
tmp_mods = []
if ob.type == 'MESH':
# No need to create a new mesh in this case, if no modifier is active!
use_org_data = True
for mod in ob.modifiers:
# For meshes, when armature export is enabled, disable Armature modifiers here!
if mod.type == 'ARMATURE' and 'ARMATURE' in settings.object_types:
tmp_mods.append((mod, mod.show_render))
mod.show_render = False
if mod.show_render:
use_org_data = False
if not use_org_data:
tmp_me = ob.to_mesh(scene, apply_modifiers=True, settings='RENDER')
data_meshes[ob_obj] = (get_blenderID_key(tmp_me), tmp_me, True)
# Re-enable temporary disabled modifiers.
for mod, show_render in tmp_mods:
mod.show_render = show_render
if use_org_data:
data_meshes[ob_obj] = (get_blenderID_key(ob.data), ob.data, False)
perfmon.step("FBX export prepare: Wrapping ShapeKeys...")
# ShapeKeys.
data_deformers_shape = OrderedDict()
geom_mat_co = settings.global_matrix if settings.bake_space_transform else None
for me_obj, (me_key, me, _org) in data_meshes.items():
if not (me.shape_keys and me.shape_keys.key_blocks):
continue
shapes_key = get_blender_mesh_shape_key(me)
_cos = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.vertices) * 3
me.vertices.foreach_get("co", _cos)
v_cos = tuple(vcos_transformed_gen(_cos, geom_mat_co))
for shape in me.shape_keys.key_blocks:
# Only write vertices really different from org coordinates!
# XXX FBX does not like empty shapes (makes Unity crash e.g.), so we have to do this here... :/
shape_verts_co = []
shape_verts_idx = []
shape.data.foreach_get("co", _cos)
sv_cos = tuple(vcos_transformed_gen(_cos, geom_mat_co))
for idx, (sv_co, v_co) in enumerate(zip(sv_cos, v_cos)):
if similar_values_iter(sv_co, v_co):
# Note: Maybe this is a bit too simplistic, should we use real shape base here? Though FBX does not
# have this at all... Anyway, this should cover most common cases imho.
continue
shape_verts_co.extend(Vector(sv_co) - Vector(v_co))
shape_verts_idx.append(idx)
if not shape_verts_co:
continue
channel_key, geom_key = get_blender_mesh_shape_channel_key(me, shape)
data = (channel_key, geom_key, shape_verts_co, shape_verts_idx)
data_deformers_shape.setdefault(me, (me_key, shapes_key, OrderedDict()))[2][shape] = data
perfmon.step("FBX export prepare: Wrapping Armatures...")
# Armatures!
data_deformers_skin = OrderedDict()
data_bones = OrderedDict()
arm_parents = set()
for ob_obj in tuple(objects):
if not (ob_obj.is_object and ob_obj.type in {'ARMATURE'}):
continue
fbx_skeleton_from_armature(scene, settings, ob_obj, objects, data_meshes,
data_bones, data_deformers_skin, data_empties, arm_parents)
# Generate leaf bones
data_leaf_bones = []
if settings.add_leaf_bones:
data_leaf_bones = fbx_generate_leaf_bones(settings, data_bones)
perfmon.step("FBX export prepare: Wrapping World...")
# Some world settings are embedded in FBX materials...
if scene.world:
data_world = OrderedDict(((scene.world, get_blenderID_key(scene.world)),))
else:
data_world = OrderedDict()
perfmon.step("FBX export prepare: Wrapping Materials...")
# TODO: Check all the mat stuff works even when mats are linked to Objects
# (we can then have the same mesh used with different materials...).
# *Should* work, as FBX always links its materials to Models (i.e. objects).
# XXX However, material indices would probably break...
data_materials = OrderedDict()
for ob_obj in objects:
# If obj is not a valid object for materials, wrapper will just return an empty tuple...
for mat_s in ob_obj.material_slots:
mat = mat_s.material
if mat is None:
continue # Empty slots!
# Note theoretically, FBX supports any kind of materials, even GLSL shaders etc.
# However, I doubt anything else than Lambert/Phong is really portable!
# We support any kind of 'surface' shader though, better to have some kind of default Lambert than nothing.
# Note we want to keep a 'dummy' empty mat even when we can't really support it, see T41396.
mat_data = data_materials.get(mat)
if mat_data is not None:
mat_data[1].append(ob_obj)
else:
data_materials[mat] = (get_blenderID_key(mat), [ob_obj])
perfmon.step("FBX export prepare: Wrapping Textures...")
# Note FBX textures also hold their mapping info.
# TODO: Support layers?
data_textures = OrderedDict()
# FbxVideo also used to store static images...
data_videos = OrderedDict()
# For now, do not use world textures, don't think they can be linked to anything FBX wise...
for mat in data_materials.keys():
if check_skip_material(mat):
continue
for tex, use_tex in zip(mat.texture_slots, mat.use_textures):
if tex is None or tex.texture is None or not use_tex:
continue
# For now, only consider image textures.
# Note FBX does has support for procedural, but this is not portable at all (opaque blob),
# so not useful for us.
# TODO I think ENVIRONMENT_MAP should be usable in FBX as well, but for now let it aside.
# if tex.texture.type not in {'IMAGE', 'ENVIRONMENT_MAP'}:
if tex.texture.type not in {'IMAGE'}:
continue
img = tex.texture.image
if img is None:
continue
# Find out whether we can actually use this texture for this material, in FBX context.
tex_fbx_props = fbx_mat_properties_from_texture(tex)
if not tex_fbx_props:
continue
tex_data = data_textures.get(tex)
if tex_data is not None:
tex_data[1][mat] = tex_fbx_props
else:
data_textures[tex] = (get_blenderID_key(tex), OrderedDict(((mat, tex_fbx_props),)))
vid_data = data_videos.get(img)
if vid_data is not None:
vid_data[1].append(tex)
else:
data_videos[img] = (get_blenderID_key(img), [tex])
perfmon.step("FBX export prepare: Wrapping Animations...")
# Animation...
animations = ()
animated = set()
frame_start = scene.frame_start
frame_end = scene.frame_end
if settings.bake_anim:
# From objects & bones only for a start.
# Kind of hack, we need a temp scene_data for object's space handling to bake animations...
tmp_scdata = FBXExportData(
None, None, None,
settings, scene, objects, None, None, 0.0, 0.0,
data_empties, data_lamps, data_cameras, data_meshes, None,
data_bones, data_leaf_bones, data_deformers_skin, data_deformers_shape,
data_world, data_materials, data_textures, data_videos,
)
animations, animated, frame_start, frame_end = fbx_animations(tmp_scdata)
# ##### Creation of templates...
perfmon.step("FBX export prepare: Generating templates...")
templates = OrderedDict()
templates[b"GlobalSettings"] = fbx_template_def_globalsettings(scene, settings, nbr_users=1)
if data_empties:
templates[b"Null"] = fbx_template_def_null(scene, settings, nbr_users=len(data_empties))
if data_lamps:
templates[b"Light"] = fbx_template_def_light(scene, settings, nbr_users=len(data_lamps))
if data_cameras:
templates[b"Camera"] = fbx_template_def_camera(scene, settings, nbr_users=len(data_cameras))
if data_bones:
templates[b"Bone"] = fbx_template_def_bone(scene, settings, nbr_users=len(data_bones))
if data_meshes:
nbr = len(data_meshes)
if data_deformers_shape:
nbr += sum(len(shapes[2]) for shapes in data_deformers_shape.values())
templates[b"Geometry"] = fbx_template_def_geometry(scene, settings, nbr_users=nbr)
if objects:
templates[b"Model"] = fbx_template_def_model(scene, settings, nbr_users=len(objects))
if arm_parents:
# Number of Pose|BindPose elements should be the same as number of meshes-parented-to-armatures
templates[b"BindPose"] = fbx_template_def_pose(scene, settings, nbr_users=len(arm_parents))
if data_deformers_skin or data_deformers_shape:
nbr = 0
if data_deformers_skin:
nbr += len(data_deformers_skin)
nbr += sum(len(clusters) for def_me in data_deformers_skin.values() for a, b, clusters in def_me.values())
if data_deformers_shape:
nbr += len(data_deformers_shape)
nbr += sum(len(shapes[2]) for shapes in data_deformers_shape.values())
assert(nbr != 0)
templates[b"Deformers"] = fbx_template_def_deformer(scene, settings, nbr_users=nbr)
# No world support in FBX...
"""
if data_world:
templates[b"World"] = fbx_template_def_world(scene, settings, nbr_users=len(data_world))
"""
if data_materials:
templates[b"Material"] = fbx_template_def_material(scene, settings, nbr_users=len(data_materials))
if data_textures:
templates[b"TextureFile"] = fbx_template_def_texture_file(scene, settings, nbr_users=len(data_textures))
if data_videos:
templates[b"Video"] = fbx_template_def_video(scene, settings, nbr_users=len(data_videos))
if animations:
nbr_astacks = len(animations)
nbr_acnodes = 0
nbr_acurves = 0
for _astack_key, astack, _al, _n, _fs, _fe in animations:
for _alayer_key, alayer in astack.values():
for _acnode_key, acnode, _acnode_name in alayer.values():
nbr_acnodes += 1
for _acurve_key, _dval, acurve, acurve_valid in acnode.values():
if acurve:
nbr_acurves += 1
templates[b"AnimationStack"] = fbx_template_def_animstack(scene, settings, nbr_users=nbr_astacks)
# Would be nice to have one layer per animated object, but this seems tricky and not that well supported.
# So for now, only one layer per anim stack.
templates[b"AnimationLayer"] = fbx_template_def_animlayer(scene, settings, nbr_users=nbr_astacks)
templates[b"AnimationCurveNode"] = fbx_template_def_animcurvenode(scene, settings, nbr_users=nbr_acnodes)
templates[b"AnimationCurve"] = fbx_template_def_animcurve(scene, settings, nbr_users=nbr_acurves)
templates_users = sum(tmpl.nbr_users for tmpl in templates.values())
# ##### Creation of connections...
perfmon.step("FBX export prepare: Generating Connections...")
connections = []
# Objects (with classical parenting).
for ob_obj in objects:
# Bones are handled later.
if not ob_obj.is_bone:
par_obj = ob_obj.parent
# Meshes parented to armature are handled separately, yet we want the 'no parent' connection (0).
if par_obj and ob_obj.has_valid_parent(objects) and (par_obj, ob_obj) not in arm_parents:
connections.append((b"OO", ob_obj.fbx_uuid, par_obj.fbx_uuid, None))
else:
connections.append((b"OO", ob_obj.fbx_uuid, 0, None))
# Armature & Bone chains.
for bo_obj in data_bones.keys():
par_obj = bo_obj.parent
if par_obj not in objects:
continue
connections.append((b"OO", bo_obj.fbx_uuid, par_obj.fbx_uuid, None))
# Object data.
for ob_obj in objects:
if ob_obj.is_bone:
bo_data_key = data_bones[ob_obj]
connections.append((b"OO", get_fbx_uuid_from_key(bo_data_key), ob_obj.fbx_uuid, None))
else:
if ob_obj.type == 'LAMP':
lamp_key = data_lamps[ob_obj.bdata.data]
connections.append((b"OO", get_fbx_uuid_from_key(lamp_key), ob_obj.fbx_uuid, None))
elif ob_obj.type == 'CAMERA':
cam_key = data_cameras[ob_obj]
connections.append((b"OO", get_fbx_uuid_from_key(cam_key), ob_obj.fbx_uuid, None))
elif ob_obj.type == 'EMPTY' or ob_obj.type == 'ARMATURE':
empty_key = data_empties[ob_obj]
connections.append((b"OO", get_fbx_uuid_from_key(empty_key), ob_obj.fbx_uuid, None))
elif ob_obj.type in BLENDER_OBJECT_TYPES_MESHLIKE:
mesh_key, _me, _free = data_meshes[ob_obj]
connections.append((b"OO", get_fbx_uuid_from_key(mesh_key), ob_obj.fbx_uuid, None))
# Leaf Bones
for (_node_name, par_uuid, node_uuid, attr_uuid, _matrix, _hide, _size) in data_leaf_bones:
connections.append((b"OO", node_uuid, par_uuid, None))
connections.append((b"OO", attr_uuid, node_uuid, None))
# 'Shape' deformers (shape keys, only for meshes currently)...
for me_key, shapes_key, shapes in data_deformers_shape.values():
# shape -> geometry
connections.append((b"OO", get_fbx_uuid_from_key(shapes_key), get_fbx_uuid_from_key(me_key), None))
for channel_key, geom_key, _shape_verts_co, _shape_verts_idx in shapes.values():
# shape channel -> shape
connections.append((b"OO", get_fbx_uuid_from_key(channel_key), get_fbx_uuid_from_key(shapes_key), None))
# geometry (keys) -> shape channel
connections.append((b"OO", get_fbx_uuid_from_key(geom_key), get_fbx_uuid_from_key(channel_key), None))
# 'Skin' deformers (armature-to-geometry, only for meshes currently)...
for arm, deformed_meshes in data_deformers_skin.items():
for me, (skin_key, ob_obj, clusters) in deformed_meshes.items():
# skin -> geometry
mesh_key, _me, _free = data_meshes[ob_obj]
assert(me == _me)
connections.append((b"OO", get_fbx_uuid_from_key(skin_key), get_fbx_uuid_from_key(mesh_key), None))
for bo_obj, clstr_key in clusters.items():
# cluster -> skin
connections.append((b"OO", get_fbx_uuid_from_key(clstr_key), get_fbx_uuid_from_key(skin_key), None))
# bone -> cluster
connections.append((b"OO", bo_obj.fbx_uuid, get_fbx_uuid_from_key(clstr_key), None))
# Materials
mesh_mat_indices = OrderedDict()
_objs_indices = {}
for mat, (mat_key, ob_objs) in data_materials.items():
for ob_obj in ob_objs:
connections.append((b"OO", get_fbx_uuid_from_key(mat_key), ob_obj.fbx_uuid, None))
# Get index of this mat for this object (or dupliobject).
# Mat indices for mesh faces are determined by their order in 'mat to ob' connections.
# Only mats for meshes currently...
# Note in case of dupliobjects a same me/mat idx will be generated several times...
# Should not be an issue in practice, and it's needed in case we export duplis but not the original!
if ob_obj.type not in BLENDER_OBJECT_TYPES_MESHLIKE:
continue
_mesh_key, me, _free = data_meshes[ob_obj]
idx = _objs_indices[ob_obj] = _objs_indices.get(ob_obj, -1) + 1
mesh_mat_indices.setdefault(me, OrderedDict())[mat] = idx
del _objs_indices
# Textures
for tex, (tex_key, mats) in data_textures.items():
for mat, fbx_mat_props in mats.items():
mat_key, _ob_objs = data_materials[mat]
for fbx_prop in fbx_mat_props:
# texture -> material properties
connections.append((b"OP", get_fbx_uuid_from_key(tex_key), get_fbx_uuid_from_key(mat_key), fbx_prop))
# Images
for vid, (vid_key, texs) in data_videos.items():
for tex in texs:
tex_key, _texs = data_textures[tex]
connections.append((b"OO", get_fbx_uuid_from_key(vid_key), get_fbx_uuid_from_key(tex_key), None))
# Animations
for astack_key, astack, alayer_key, _name, _fstart, _fend in animations:
# Animstack itself is linked nowhere!
astack_id = get_fbx_uuid_from_key(astack_key)
# For now, only one layer!
alayer_id = get_fbx_uuid_from_key(alayer_key)
connections.append((b"OO", alayer_id, astack_id, None))
for elem_key, (alayer_key, acurvenodes) in astack.items():
elem_id = get_fbx_uuid_from_key(elem_key)
# Animlayer -> animstack.
# alayer_id = get_fbx_uuid_from_key(alayer_key)
# connections.append((b"OO", alayer_id, astack_id, None))
for fbx_prop, (acurvenode_key, acurves, acurvenode_name) in acurvenodes.items():
# Animcurvenode -> animalayer.
acurvenode_id = get_fbx_uuid_from_key(acurvenode_key)
connections.append((b"OO", acurvenode_id, alayer_id, None))
# Animcurvenode -> object property.
connections.append((b"OP", acurvenode_id, elem_id, fbx_prop.encode()))
for fbx_item, (acurve_key, default_value, acurve, acurve_valid) in acurves.items():
if acurve:
# Animcurve -> Animcurvenode.
connections.append((b"OP", get_fbx_uuid_from_key(acurve_key), acurvenode_id, fbx_item.encode()))
perfmon.level_down()
# ##### And pack all this!
return FBXExportData(
templates, templates_users, connections,
settings, scene, objects, animations, animated, frame_start, frame_end,
data_empties, data_lamps, data_cameras, data_meshes, mesh_mat_indices,
data_bones, data_leaf_bones, data_deformers_skin, data_deformers_shape,
data_world, data_materials, data_textures, data_videos,
)
def fbx_scene_data_cleanup(scene_data):
"""
Some final cleanup...
"""
# Delete temp meshes.
for _key, me, free in scene_data.data_meshes.values():
if free:
bpy.data.meshes.remove(me)
# ##### Top-level FBX elements generators. #####
def fbx_header_elements(root, scene_data, time=None):
"""
Write boiling code of FBX root.
time is expected to be a datetime.datetime object, or None (using now() in this case).
"""
app_vendor = "Blender Foundation"
app_name = "Blender (stable FBX IO)"
app_ver = bpy.app.version_string
# ##### Start of FBXHeaderExtension element.
header_ext = elem_empty(root, b"FBXHeaderExtension")
elem_data_single_int32(header_ext, b"FBXHeaderVersion", FBX_HEADER_VERSION)
elem_data_single_int32(header_ext, b"FBXVersion", FBX_VERSION)
# No encryption!
elem_data_single_int32(header_ext, b"EncryptionType", 0)
if time is None:
time = datetime.datetime.now()
elem = elem_empty(header_ext, b"CreationTimeStamp")
elem_data_single_int32(elem, b"Version", 1000)
elem_data_single_int32(elem, b"Year", time.year)
elem_data_single_int32(elem, b"Month", time.month)
elem_data_single_int32(elem, b"Day", time.day)
elem_data_single_int32(elem, b"Hour", time.hour)
elem_data_single_int32(elem, b"Minute", time.minute)
elem_data_single_int32(elem, b"Second", time.second)
elem_data_single_int32(elem, b"Millisecond", time.microsecond // 1000)
elem_data_single_string_unicode(header_ext, b"Creator", "%s - %s" % (app_name, app_ver))
# 'SceneInfo' seems mandatory to get a valid FBX file...
# TODO use real values!
# XXX Should we use scene.name.encode() here?
scene_info = elem_data_single_string(header_ext, b"SceneInfo", fbx_name_class(b"GlobalInfo", b"SceneInfo"))
scene_info.add_string(b"UserData")
elem_data_single_string(scene_info, b"Type", b"UserData")
elem_data_single_int32(scene_info, b"Version", FBX_SCENEINFO_VERSION)
meta_data = elem_empty(scene_info, b"MetaData")
elem_data_single_int32(meta_data, b"Version", FBX_SCENEINFO_VERSION)
elem_data_single_string(meta_data, b"Title", b"")
elem_data_single_string(meta_data, b"Subject", b"")
elem_data_single_string(meta_data, b"Author", b"")
elem_data_single_string(meta_data, b"Keywords", b"")
elem_data_single_string(meta_data, b"Revision", b"")
elem_data_single_string(meta_data, b"Comment", b"")
props = elem_properties(scene_info)
elem_props_set(props, "p_string_url", b"DocumentUrl", "/foobar.fbx")
elem_props_set(props, "p_string_url", b"SrcDocumentUrl", "/foobar.fbx")
original = elem_props_compound(props, b"Original")
original("p_string", b"ApplicationVendor", app_vendor)
original("p_string", b"ApplicationName", app_name)
original("p_string", b"ApplicationVersion", app_ver)
original("p_datetime", b"DateTime_GMT", "01/01/1970 00:00:00.000")
original("p_string", b"FileName", "/foobar.fbx")
lastsaved = elem_props_compound(props, b"LastSaved")
lastsaved("p_string", b"ApplicationVendor", app_vendor)
lastsaved("p_string", b"ApplicationName", app_name)
lastsaved("p_string", b"ApplicationVersion", app_ver)
lastsaved("p_datetime", b"DateTime_GMT", "01/01/1970 00:00:00.000")
# ##### End of FBXHeaderExtension element.
# FileID is replaced by dummy value currently...
elem_data_single_bytes(root, b"FileId", b"FooBar")
# CreationTime is replaced by dummy value currently, but anyway...
elem_data_single_string_unicode(root, b"CreationTime",
"{:04}-{:02}-{:02} {:02}:{:02}:{:02}:{:03}"
"".format(time.year, time.month, time.day, time.hour, time.minute, time.second,
time.microsecond * 1000))
elem_data_single_string_unicode(root, b"Creator", "%s - %s" % (app_name, app_ver))
# ##### Start of GlobalSettings element.
global_settings = elem_empty(root, b"GlobalSettings")
scene = scene_data.scene
elem_data_single_int32(global_settings, b"Version", 1000)
props = elem_properties(global_settings)
up_axis, front_axis, coord_axis = RIGHT_HAND_AXES[scene_data.settings.to_axes]
if scene_data.settings.apply_unit_scale:
# Unit scaling is applied to objects' scale, so our unit is effectively FBX one (centimeter).
scale_factor_org = 1.0
scale_factor = scene_data.settings.global_scale / units_blender_to_fbx_factor(scene)
else:
scale_factor_org = units_blender_to_fbx_factor(scene)
scale_factor = scene_data.settings.global_scale * units_blender_to_fbx_factor(scene)
elem_props_set(props, "p_integer", b"UpAxis", up_axis[0])
elem_props_set(props, "p_integer", b"UpAxisSign", up_axis[1])
elem_props_set(props, "p_integer", b"FrontAxis", front_axis[0])
elem_props_set(props, "p_integer", b"FrontAxisSign", front_axis[1])
elem_props_set(props, "p_integer", b"CoordAxis", coord_axis[0])
elem_props_set(props, "p_integer", b"CoordAxisSign", coord_axis[1])
elem_props_set(props, "p_integer", b"OriginalUpAxis", -1)
elem_props_set(props, "p_integer", b"OriginalUpAxisSign", 1)
elem_props_set(props, "p_double", b"UnitScaleFactor", scale_factor)
elem_props_set(props, "p_double", b"OriginalUnitScaleFactor", scale_factor_org)
elem_props_set(props, "p_color_rgb", b"AmbientColor", (0.0, 0.0, 0.0))
elem_props_set(props, "p_string", b"DefaultCamera", "Producer Perspective")
# Global timing data.
r = scene.render
_, fbx_fps_mode = FBX_FRAMERATES[0] # Custom framerate.
fbx_fps = fps = r.fps / r.fps_base
for ref_fps, fps_mode in FBX_FRAMERATES:
if similar_values(fps, ref_fps):
fbx_fps = ref_fps
fbx_fps_mode = fps_mode
elem_props_set(props, "p_enum", b"TimeMode", fbx_fps_mode)
elem_props_set(props, "p_timestamp", b"TimeSpanStart", 0)
elem_props_set(props, "p_timestamp", b"TimeSpanStop", FBX_KTIME)
elem_props_set(props, "p_double", b"CustomFrameRate", fbx_fps)
# ##### End of GlobalSettings element.
def fbx_documents_elements(root, scene_data):
"""
Write 'Document' part of FBX root.
Seems like FBX support multiple documents, but until I find examples of such, we'll stick to single doc!
time is expected to be a datetime.datetime object, or None (using now() in this case).
"""
name = scene_data.scene.name
# ##### Start of Documents element.
docs = elem_empty(root, b"Documents")
elem_data_single_int32(docs, b"Count", 1)
doc_uid = get_fbx_uuid_from_key("__FBX_Document__" + name)
doc = elem_data_single_int64(docs, b"Document", doc_uid)
doc.add_string_unicode(name)
doc.add_string_unicode(name)
props = elem_properties(doc)
elem_props_set(props, "p_object", b"SourceObject")
elem_props_set(props, "p_string", b"ActiveAnimStackName", "")
# XXX Some kind of ID? Offset?
# Anyway, as long as we have only one doc, probably not an issue.
elem_data_single_int64(doc, b"RootNode", 0)
def fbx_references_elements(root, scene_data):
"""
Have no idea what references are in FBX currently... Just writing empty element.
"""
docs = elem_empty(root, b"References")
def fbx_definitions_elements(root, scene_data):
"""
Templates definitions. Only used by Objects data afaik (apart from dummy GlobalSettings one).
"""
definitions = elem_empty(root, b"Definitions")
elem_data_single_int32(definitions, b"Version", FBX_TEMPLATES_VERSION)
elem_data_single_int32(definitions, b"Count", scene_data.templates_users)
fbx_templates_generate(definitions, scene_data.templates)
def fbx_objects_elements(root, scene_data):
"""
Data (objects, geometry, material, textures, armatures, etc.).
"""
perfmon = PerfMon()
perfmon.level_up()
objects = elem_empty(root, b"Objects")
perfmon.step("FBX export fetch empties (%d)..." % len(scene_data.data_empties))
for empty in scene_data.data_empties:
fbx_data_empty_elements(objects, empty, scene_data)
perfmon.step("FBX export fetch lamps (%d)..." % len(scene_data.data_lamps))
for lamp in scene_data.data_lamps:
fbx_data_lamp_elements(objects, lamp, scene_data)
perfmon.step("FBX export fetch cameras (%d)..." % len(scene_data.data_cameras))
for cam in scene_data.data_cameras:
fbx_data_camera_elements(objects, cam, scene_data)
perfmon.step("FBX export fetch meshes (%d)..." % len(scene_data.data_meshes))
done_meshes = set()
for me_obj in scene_data.data_meshes:
fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes)
del done_meshes
perfmon.step("FBX export fetch objects (%d)..." % len(scene_data.objects))
for ob_obj in scene_data.objects:
if ob_obj.is_dupli:
continue
fbx_data_object_elements(objects, ob_obj, scene_data)
ob_obj.dupli_list_create(scene_data.scene, 'RENDER')
for dp_obj in ob_obj.dupli_list:
if dp_obj not in scene_data.objects:
continue
fbx_data_object_elements(objects, dp_obj, scene_data)
ob_obj.dupli_list_clear()
perfmon.step("FBX export fetch remaining...")
for ob_obj in scene_data.objects:
if not (ob_obj.is_object and ob_obj.type == 'ARMATURE'):
continue
fbx_data_armature_elements(objects, ob_obj, scene_data)
if scene_data.data_leaf_bones:
fbx_data_leaf_bone_elements(objects, scene_data)
for mat in scene_data.data_materials:
fbx_data_material_elements(objects, mat, scene_data)
for tex in scene_data.data_textures:
fbx_data_texture_file_elements(objects, tex, scene_data)
for vid in scene_data.data_videos:
fbx_data_video_elements(objects, vid, scene_data)
perfmon.step("FBX export fetch animations...")
start_time = time.process_time()
fbx_data_animation_elements(objects, scene_data)
perfmon.level_down()
def fbx_connections_elements(root, scene_data):
"""
Relations between Objects (which material uses which texture, and so on).
"""
connections = elem_empty(root, b"Connections")
for c in scene_data.connections:
elem_connection(connections, *c)
def fbx_takes_elements(root, scene_data):
"""
Animations.
"""
# XXX Pretty sure takes are no more needed...
takes = elem_empty(root, b"Takes")
elem_data_single_string(takes, b"Current", b"")
animations = scene_data.animations
for astack_key, animations, alayer_key, name, f_start, f_end in animations:
scene = scene_data.scene
fps = scene.render.fps / scene.render.fps_base
start_ktime = int(convert_sec_to_ktime(f_start / fps))
end_ktime = int(convert_sec_to_ktime(f_end / fps))
take = elem_data_single_string(takes, b"Take", name)
elem_data_single_string(take, b"FileName", name + b".tak")
take_loc_time = elem_data_single_int64(take, b"LocalTime", start_ktime)
take_loc_time.add_int64(end_ktime)
take_ref_time = elem_data_single_int64(take, b"ReferenceTime", start_ktime)
take_ref_time.add_int64(end_ktime)
# ##### "Main" functions. #####
# This func can be called with just the filepath
def save_single(operator, scene, filepath="",
global_matrix=Matrix(),
apply_unit_scale=False,
axis_up="Z",
axis_forward="Y",
context_objects=None,
object_types=None,
use_mesh_modifiers=True,
mesh_smooth_type='FACE',
use_armature_deform_only=False,
bake_anim=True,
bake_anim_use_all_bones=True,
bake_anim_use_nla_strips=True,
bake_anim_use_all_actions=True,
bake_anim_step=1.0,
bake_anim_simplify_factor=1.0,
add_leaf_bones=False,
primary_bone_axis='Y',
secondary_bone_axis='X',
use_metadata=True,
path_mode='AUTO',
use_mesh_edges=True,
use_tspace=True,
embed_textures=False,
use_custom_props=False,
bake_space_transform=False,
**kwargs
):
# Clear cached ObjectWrappers (just in case...).
ObjectWrapper.cache_clear()
if object_types is None:
object_types = {'EMPTY', 'CAMERA', 'LAMP', 'ARMATURE', 'MESH', 'OTHER'}
if 'OTHER' in object_types:
object_types |= BLENDER_OTHER_OBJECT_TYPES
if apply_unit_scale:
global_matrix = global_matrix * Matrix.Scale(units_blender_to_fbx_factor(scene), 4)
global_scale = global_matrix.median_scale
global_matrix_inv = global_matrix.inverted()
# For transforming mesh normals.
global_matrix_inv_transposed = global_matrix_inv.transposed()
# Only embed textures in COPY mode!
if embed_textures and path_mode != 'COPY':
embed_textures = False
# Calcuate bone correction matrix
bone_correction_matrix = None # Default is None = no change
bone_correction_matrix_inv = None
if (primary_bone_axis, secondary_bone_axis) != ('Y', 'X'):
from bpy_extras.io_utils import axis_conversion
bone_correction_matrix = axis_conversion(from_forward=secondary_bone_axis,
from_up=primary_bone_axis,
to_forward='X',
to_up='Y',
).to_4x4()
bone_correction_matrix_inv = bone_correction_matrix.inverted()
media_settings = FBXExportSettingsMedia(
path_mode,
os.path.dirname(bpy.data.filepath), # base_src
os.path.dirname(filepath), # base_dst
# Local dir where to put images (medias), using FBX conventions.
os.path.splitext(os.path.basename(filepath))[0] + ".fbm", # subdir
embed_textures,
set(), # copy_set
set(), # embedded_set
)
settings = FBXExportSettings(
operator.report, (axis_up, axis_forward), global_matrix, global_scale, apply_unit_scale,
bake_space_transform, global_matrix_inv, global_matrix_inv_transposed,
context_objects, object_types, use_mesh_modifiers,
mesh_smooth_type, use_mesh_edges, use_tspace,
use_armature_deform_only, add_leaf_bones, bone_correction_matrix, bone_correction_matrix_inv,
bake_anim, bake_anim_use_all_bones, bake_anim_use_nla_strips, bake_anim_use_all_actions,
bake_anim_step, bake_anim_simplify_factor,
False, media_settings, use_custom_props,
)
import bpy_extras.io_utils
print('\nFBX export starting... %r' % filepath)
start_time = time.process_time()
# Generate some data about exported scene...
scene_data = fbx_data_from_scene(scene, settings)
root = elem_empty(None, b"") # Root element has no id, as it is not saved per se!
# Mostly FBXHeaderExtension and GlobalSettings.
fbx_header_elements(root, scene_data)
# Documents and References are pretty much void currently.
fbx_documents_elements(root, scene_data)
fbx_references_elements(root, scene_data)
# Templates definitions.
fbx_definitions_elements(root, scene_data)
# Actual data.
fbx_objects_elements(root, scene_data)
# How data are inter-connected.
fbx_connections_elements(root, scene_data)
# Animation.
fbx_takes_elements(root, scene_data)
# Cleanup!
fbx_scene_data_cleanup(scene_data)
# And we are down, we can write the whole thing!
encode_bin.write(filepath, root, FBX_VERSION)
# Clear cached ObjectWrappers!
ObjectWrapper.cache_clear()
# copy all collected files, if we did not embed them.
if not media_settings.embed_textures:
bpy_extras.io_utils.path_reference_copy(media_settings.copy_set)
print('export finished in %.4f sec.' % (time.process_time() - start_time))
return {'FINISHED'}
# defaults for applications, currently only unity but could add others.
def defaults_unity3d():
return {
# These options seem to produce the same result as the old Ascii exporter in Unity3D:
"version": 'BIN7400',
"axis_up": 'Y',
"axis_forward": '-Z',
"global_matrix": Matrix.Rotation(-math.pi / 2.0, 4, 'X'),
# Should really be True, but it can cause problems if a model is already in a scene or prefab
# with the old transforms.
"bake_space_transform": False,
"use_selection": False,
"object_types": {'ARMATURE', 'EMPTY', 'MESH', 'OTHER'},
"use_mesh_modifiers": True,
"use_mesh_edges": False,
"mesh_smooth_type": 'FACE',
"use_tspace": False, # XXX Why? Unity is expected to support tspace import...
"use_armature_deform_only": True,
"use_custom_props": True,
"bake_anim": True,
"bake_anim_simplify_factor": 1.0,
"bake_anim_step": 1.0,
"bake_anim_use_nla_strips": True,
"bake_anim_use_all_actions": True,
"add_leaf_bones": False, # Avoid memory/performance cost for something only useful for modelling
"primary_bone_axis": 'Y', # Doesn't really matter for Unity, so leave unchanged
"secondary_bone_axis": 'X',
"path_mode": 'AUTO',
"embed_textures": False,
"batch_mode": 'OFF',
}
def save(operator, context,
filepath="",
use_selection=False,
batch_mode='OFF',
use_batch_own_dir=False,
**kwargs
):
"""
This is a wrapper around save_single, which handles multi-scenes (or groups) cases, when batch-exporting a whole
.blend file.
"""
ret = None
org_mode = None
if context.active_object and context.active_object.mode != 'OBJECT' and bpy.ops.object.mode_set.poll():
org_mode = context.active_object.mode
bpy.ops.object.mode_set(mode='OBJECT')
if batch_mode == 'OFF':
kwargs_mod = kwargs.copy()
if use_selection:
kwargs_mod["context_objects"] = context.selected_objects
else:
kwargs_mod["context_objects"] = context.scene.objects
ret = save_single(operator, context.scene, filepath, **kwargs_mod)
else:
fbxpath = filepath
prefix = os.path.basename(fbxpath)
if prefix:
fbxpath = os.path.dirname(fbxpath)
if batch_mode == 'GROUP':
data_seq = tuple(grp for grp in bpy.data.groups if grp.objects)
else:
data_seq = bpy.data.scenes
# call this function within a loop with BATCH_ENABLE == False
# no scene switching done at the moment.
# orig_sce = context.scene
new_fbxpath = fbxpath # own dir option modifies, we need to keep an original
for data in data_seq: # scene or group
newname = "_".join((prefix, bpy.path.clean_name(data.name))) if prefix else bpy.path.clean_name(data.name)
if use_batch_own_dir:
new_fbxpath = os.path.join(fbxpath, newname)
# path may already exist
# TODO - might exist but be a file. unlikely but should probably account for it.
if not os.path.exists(new_fbxpath):
os.makedirs(new_fbxpath)
filepath = os.path.join(new_fbxpath, newname + '.fbx')
print('\nBatch exporting %s as...\n\t%r' % (data, filepath))
if batch_mode == 'GROUP': # group
# group, so objects update properly, add a dummy scene.
scene = bpy.data.scenes.new(name="FBX_Temp")
scene.layers = [True] * 20
# bpy.data.scenes.active = scene # XXX, cant switch
src_scenes = {} # Count how much each 'source' scenes are used.
for ob_base in data.objects:
for src_sce in ob_base.users_scene:
if src_sce not in src_scenes:
src_scenes[src_sce] = 0
src_scenes[src_sce] += 1
scene.objects.link(ob_base)
# Find the 'most used' source scene, and use its unit settings. This is somewhat weak, but should work
# fine in most cases, and avoids stupid issues like T41931.
best_src_scene = None
best_src_scene_users = 0
for sce, nbr_users in src_scenes.items():
if (nbr_users) > best_src_scene_users:
best_src_scene_users = nbr_users
best_src_scene = sce
scene.unit_settings.system = best_src_scene.unit_settings.system
scene.unit_settings.system_rotation = best_src_scene.unit_settings.system_rotation
scene.unit_settings.scale_length = best_src_scene.unit_settings.scale_length
scene.update()
# TODO - BUMMER! Armatures not in the group wont animate the mesh
else:
scene = data
kwargs_batch = kwargs.copy()
kwargs_batch["context_objects"] = data.objects
save_single(operator, scene, filepath, **kwargs_batch)
if batch_mode == 'GROUP':
# remove temp group scene
bpy.data.scenes.remove(scene)
# no active scene changing!
# bpy.data.scenes.active = orig_sce
ret = {'FINISHED'} # so the script wont run after we have batch exported.
if context.active_object and org_mode and bpy.ops.object.mode_set.poll():
bpy.ops.object.mode_set(mode=org_mode)
return ret