export_fbx.py

# ##### 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


import os
import time
import math  # math.pi

import bpy
from mathutils import Vector, Matrix

def grouper_exact(it, chunk_size):
    """
    Grouper-like func, but returns exactly all elements from it:

    >>> for chunk in grouper_exact(range(10), 3): print(e)
    (0,1,2)
    (3,4,5)
    (6,7,8)
    (9,)

    About 2 times slower than simple zip(*[it] * 3), but does not need to convert iterator to sequence to be sure to
    get exactly all elements in it (i.e. get a last chunk that may be smaller than chunk_size).
    """
    import itertools
    i = itertools.zip_longest(*[iter(it)] * chunk_size, fillvalue=...)
    curr = next(i)
    for nxt in i:
        yield curr
        curr = nxt
    if ... in curr:
        yield curr[:curr.index(...)]
    else:
        yield curr

# I guess FBX uses degrees instead of radians (Arystan).
# Call this function just before writing to FBX.
# 180 / math.pi == 57.295779513
def tuple_rad_to_deg(eul):
    return eul[0] * 57.295779513, eul[1] * 57.295779513, eul[2] * 57.295779513

# Used to add the scene name into the filepath without using odd chars
sane_name_mapping_ob = {}
sane_name_mapping_ob_unique = set()
sane_name_mapping_mat = {}
sane_name_mapping_tex = {}
sane_name_mapping_take = {}
sane_name_mapping_group = {}

# Make sure reserved names are not used
sane_name_mapping_ob['Scene'] = 'Scene_'
sane_name_mapping_ob_unique.add('Scene_')


def increment_string(t):
    name = t
    num = ''
    while name and name[-1].isdigit():
        num = name[-1] + num
        name = name[:-1]
    if num:
        return '%s%d' % (name, int(num) + 1)
    else:
        return name + '_0'


# todo - Disallow the name 'Scene' - it will bugger things up.
def sane_name(data, dct, unique_set=None):
    #if not data: return None

    if type(data) == tuple:  # materials are paired up with images
        data, other = data
        use_other = True
    else:
        other = None
        use_other = False

    name = data.name if data else None
    orig_name = name

    if other:
        orig_name_other = other.name
        name = '%s #%s' % (name, orig_name_other)
    else:
        orig_name_other = None

    # dont cache, only ever call once for each data type now,
    # so as to avoid namespace collision between types - like with objects <-> bones
    #try:		return dct[name]
    #except:		pass

    if not name:
        name = 'unnamed'  # blank string, ASKING FOR TROUBLE!
    else:

        name = bpy.path.clean_name(name)  # use our own

    name_unique = dct.values() if unique_set is None else unique_set

    while name in name_unique:
        name = increment_string(name)

    if use_other:  # even if other is None - orig_name_other will be a string or None
        dct[orig_name, orig_name_other] = name
    else:
        dct[orig_name] = name

    if unique_set is not None:
        unique_set.add(name)

    return name


def sane_obname(data):
    return sane_name(data, sane_name_mapping_ob, sane_name_mapping_ob_unique)


def sane_matname(data):
    return sane_name(data, sane_name_mapping_mat)


def sane_texname(data):
    return sane_name(data, sane_name_mapping_tex)


def sane_takename(data):
    return sane_name(data, sane_name_mapping_take)


def sane_groupname(data):
    return sane_name(data, sane_name_mapping_group)


def mat4x4str(mat):
    # blender matrix is row major, fbx is col major so transpose on write
    return ("%.15f,%.15f,%.15f,%.15f,"
            "%.15f,%.15f,%.15f,%.15f,"
            "%.15f,%.15f,%.15f,%.15f,"
            "%.15f,%.15f,%.15f,%.15f" %
            tuple([f for v in mat.transposed() for f in v]))


def action_bone_names(obj, action):
    from bpy.types import PoseBone

    names = set()
    path_resolve = obj.path_resolve

    for fcu in action.fcurves:
        try:
            prop = path_resolve(fcu.data_path, False)
        except:
            prop = None

        if prop is not None:
            data = prop.data
            if isinstance(data, PoseBone):
                names.add(data.name)

    return names


# ob must be OB_MESH
def BPyMesh_meshWeight2List(ob, me):
    """ Takes a mesh and return its group names and a list of lists, one list per vertex.
    aligning the each vert list with the group names, each list contains float value for the weight.
    These 2 lists can be modified and then used with list2MeshWeight to apply the changes.
    """

    # Clear the vert group.
    groupNames = [g.name for g in ob.vertex_groups]
    len_groupNames = len(groupNames)

    if not len_groupNames:
        # no verts? return a vert aligned empty list
        return [[] for i in range(len(me.vertices))], []
    else:
        vWeightList = [[0.0] * len_groupNames for i in range(len(me.vertices))]

    for i, v in enumerate(me.vertices):
        for g in v.groups:
            # possible weights are out of range
            index = g.group
            if index < len_groupNames:
                vWeightList[i][index] = g.weight

    return groupNames, vWeightList


def meshNormalizedWeights(ob, me):
    groupNames, vWeightList = BPyMesh_meshWeight2List(ob, me)

    if not groupNames:
        return [], []

    for i, vWeights in enumerate(vWeightList):
        tot = 0.0
        for w in vWeights:
            tot += w

        if tot:
            for j, w in enumerate(vWeights):
                vWeights[j] = w / tot

    return groupNames, vWeightList

header_comment = \
'''; FBX 6.1.0 project file
; Created by Blender FBX Exporter
; for support mail: ideasman42@gmail.com
; ----------------------------------------------------

'''


# This func can be called with just the filepath
def save_single(operator, scene, filepath="",
        global_matrix=None,
        context_objects=None,
        object_types={'EMPTY', 'CAMERA', 'LAMP', 'ARMATURE', 'MESH'},
        use_mesh_modifiers=True,
        mesh_smooth_type='FACE',
        use_armature_deform_only=False,
        use_anim=True,
        use_anim_optimize=True,
        anim_optimize_precision=6,
        use_anim_action_all=False,
        use_metadata=True,
        path_mode='AUTO',
        use_mesh_edges=True,
        use_default_take=True,
    ):

    import bpy_extras.io_utils

    # Only used for camera and lamp rotations
    mtx_x90 = Matrix.Rotation(math.pi / 2.0, 3, 'X')
    # Used for mesh and armature rotations
    mtx4_z90 = Matrix.Rotation(math.pi / 2.0, 4, 'Z')

    if global_matrix is None:
        global_matrix = Matrix()
        global_scale = 1.0
    else:
        global_scale = global_matrix.median_scale

    # Use this for working out paths relative to the export location
    base_src = os.path.dirname(bpy.data.filepath)
    base_dst = os.path.dirname(filepath)

    # collect images to copy
    copy_set = set()

    # ----------------------------------------------
    # storage classes
    class my_bone_class(object):
        __slots__ = ("blenName",
                     "blenBone",
                     "blenMeshes",
                     "restMatrix",
                     "parent",
                     "blenName",
                     "fbxName",
                     "fbxArm",
                     "__pose_bone",
                     "__anim_poselist")

        def __init__(self, blenBone, fbxArm):

            # This is so 2 armatures dont have naming conflicts since FBX bones use object namespace
            self.fbxName = sane_obname(blenBone)

            self.blenName = blenBone.name
            self.blenBone = blenBone
            self.blenMeshes = {}  # fbxMeshObName : mesh
            self.fbxArm = fbxArm
            self.restMatrix = blenBone.matrix_local

            # not used yet
            #~ self.restMatrixInv = self.restMatrix.inverted()
            #~ self.restMatrixLocal = None # set later, need parent matrix

            self.parent = None

            # not public
            pose = fbxArm.blenObject.pose
            self.__pose_bone = pose.bones[self.blenName]

            # store a list if matrices here, (poseMatrix, head, tail)
            # {frame:posematrix, frame:posematrix, ...}
            self.__anim_poselist = {}

        '''
        def calcRestMatrixLocal(self):
            if self.parent:
                self.restMatrixLocal = self.restMatrix * self.parent.restMatrix.inverted()
            else:
                self.restMatrixLocal = self.restMatrix.copy()
        '''
        def setPoseFrame(self, f):
            # cache pose info here, frame must be set beforehand

            # Didnt end up needing head or tail, if we do - here it is.
            '''
            self.__anim_poselist[f] = (\
                self.__pose_bone.poseMatrix.copy(),\
                self.__pose_bone.head.copy(),\
                self.__pose_bone.tail.copy() )
            '''

            self.__anim_poselist[f] = self.__pose_bone.matrix.copy()

        def getPoseBone(self):
            return self.__pose_bone

        # get pose from frame.
        def getPoseMatrix(self, f):  # ----------------------------------------------
            return self.__anim_poselist[f]
        '''
        def getPoseHead(self, f):
            #return self.__pose_bone.head.copy()
            return self.__anim_poselist[f][1].copy()
        def getPoseTail(self, f):
            #return self.__pose_bone.tail.copy()
            return self.__anim_poselist[f][2].copy()
        '''
        # end

        def getAnimParRelMatrix(self, frame):
            #arm_mat = self.fbxArm.matrixWorld
            #arm_mat = self.fbxArm.parRelMatrix()
            if not self.parent:
                #return mtx4_z90 * (self.getPoseMatrix(frame) * arm_mat) # dont apply arm matrix anymore
                return self.getPoseMatrix(frame) * mtx4_z90
            else:
                #return (mtx4_z90 * ((self.getPoseMatrix(frame) * arm_mat)))  *  (mtx4_z90 * (self.parent.getPoseMatrix(frame) * arm_mat)).inverted()
                return (self.parent.getPoseMatrix(frame) * mtx4_z90).inverted() * ((self.getPoseMatrix(frame)) * mtx4_z90)

        # we need thes because cameras and lights modified rotations
        def getAnimParRelMatrixRot(self, frame):
            return self.getAnimParRelMatrix(frame)

        def flushAnimData(self):
            self.__anim_poselist.clear()

    class my_object_generic(object):
        __slots__ = ("fbxName",
                     "blenObject",
                     "blenData",
                     "origData",
                     "blenTextures",
                     "blenMaterials",
                     "blenMaterialList",
                     "blenAction",
                     "blenActionList",
                     "fbxGroupNames",
                     "fbxParent",
                     "fbxBoneParent",
                     "fbxBones",
                     "fbxArm",
                     "matrixWorld",
                     "__anim_poselist",
                     )

        # Other settings can be applied for each type - mesh, armature etc.
        def __init__(self, ob, matrixWorld=None):
            self.fbxName = sane_obname(ob)
            self.blenObject = ob
            self.fbxGroupNames = []
            self.fbxParent = None  # set later on IF the parent is in the selection.
            self.fbxArm = None
            if matrixWorld:
                self.matrixWorld = global_matrix * matrixWorld
            else:
                self.matrixWorld = global_matrix * ob.matrix_world

            self.__anim_poselist = {}  # we should only access this

        def parRelMatrix(self):
            if self.fbxParent:
                return self.fbxParent.matrixWorld.inverted() * self.matrixWorld
            else:
                return self.matrixWorld

        def setPoseFrame(self, f, fake=False):
            if fake:
                self.__anim_poselist[f] = self.matrixWorld * global_matrix.inverted()
            else:
                self.__anim_poselist[f] = self.blenObject.matrix_world.copy()

        def getAnimParRelMatrix(self, frame):
            if self.fbxParent:
                #return (self.__anim_poselist[frame] * self.fbxParent.__anim_poselist[frame].inverted() ) * global_matrix
                return (global_matrix * self.fbxParent.__anim_poselist[frame]).inverted() * (global_matrix * self.__anim_poselist[frame])
            else:
                return global_matrix * self.__anim_poselist[frame]

        def getAnimParRelMatrixRot(self, frame):
            obj_type = self.blenObject.type
            if self.fbxParent:
                matrix_rot = ((global_matrix * self.fbxParent.__anim_poselist[frame]).inverted() * (global_matrix * self.__anim_poselist[frame])).to_3x3()
            else:
                matrix_rot = (global_matrix * self.__anim_poselist[frame]).to_3x3()

            # Lamps need to be rotated
            if obj_type == 'LAMP':
                matrix_rot = matrix_rot * mtx_x90
            elif obj_type == 'CAMERA':
                y = matrix_rot * Vector((0.0, 1.0, 0.0))
                matrix_rot = Matrix.Rotation(math.pi / 2.0, 3, y) * matrix_rot

            return matrix_rot

    # ----------------------------------------------

    print('\nFBX export starting... %r' % filepath)
    start_time = time.process_time()
    try:
        file = open(filepath, "w", encoding="utf8", newline="\n")
    except:
        import traceback
        traceback.print_exc()
        operator.report({'ERROR'}, "Couldn't open file %r" % filepath)
        return {'CANCELLED'}

    # convenience
    fw = file.write

    # scene = context.scene  # now passed as an arg instead of context
    world = scene.world

    # ---------------------------- Write the header first
    fw(header_comment)
    if use_metadata:
        curtime = time.localtime()[0:6]
    else:
        curtime = (0, 0, 0, 0, 0, 0)
    #
    fw(
'''FBXHeaderExtension:  {
	FBXHeaderVersion: 1003
	FBXVersion: 6100
	CreationTimeStamp:  {
		Version: 1000
		Year: %.4i
		Month: %.2i
		Day: %.2i
		Hour: %.2i
		Minute: %.2i
		Second: %.2i
		Millisecond: 0
	}
	Creator: "FBX SDK/FBX Plugins build 20070228"
	OtherFlags:  {
		FlagPLE: 0
	}
}''' % (curtime))

    fw('\nCreationTime: "%.4i-%.2i-%.2i %.2i:%.2i:%.2i:000"' % curtime)
    fw('\nCreator: "Blender version %s"' % bpy.app.version_string)

    pose_items = []  # list of (fbxName, matrix) to write pose data for, easier to collect along the way

    # --------------- funcs for exporting
    def object_tx(ob, loc, matrix, matrix_mod=None):
        """
        Matrix mod is so armature objects can modify their bone matrices
        """
        if isinstance(ob, bpy.types.Bone):

            # we know we have a matrix
            # matrix = mtx4_z90 * (ob.matrix['ARMATURESPACE'] * matrix_mod)
            matrix = ob.matrix_local * mtx4_z90  # dont apply armature matrix anymore

            parent = ob.parent
            if parent:
                #par_matrix = mtx4_z90 * (parent.matrix['ARMATURESPACE'] * matrix_mod)
                par_matrix = parent.matrix_local * mtx4_z90  # dont apply armature matrix anymore
                matrix = par_matrix.inverted() * matrix

            loc, rot, scale = matrix.decompose()
            matrix_rot = rot.to_matrix()

            loc = tuple(loc)
            rot = tuple(rot.to_euler())  # quat -> euler
            scale = tuple(scale)

        else:
            # This is bad because we need the parent relative matrix from the fbx parent (if we have one), dont use anymore
            #if ob and not matrix: matrix = ob.matrix_world * global_matrix
            if ob and not matrix:
                raise Exception("error: this should never happen!")

            matrix_rot = matrix
            #if matrix:
            #    matrix = matrix_scale * matrix

            if matrix:
                loc, rot, scale = matrix.decompose()
                matrix_rot = rot.to_matrix()

                # Lamps need to be rotated
                if ob and ob.type == 'LAMP':
                    matrix_rot = matrix_rot * mtx_x90
                elif ob and ob.type == 'CAMERA':
                    y = matrix_rot * Vector((0.0, 1.0, 0.0))
                    matrix_rot = Matrix.Rotation(math.pi / 2.0, 3, y) * matrix_rot
                # else do nothing.

                loc = tuple(loc)
                rot = tuple(matrix_rot.to_euler())
                scale = tuple(scale)
            else:
                if not loc:
                    loc = 0.0, 0.0, 0.0
                scale = 1.0, 1.0, 1.0
                rot = 0.0, 0.0, 0.0

        return loc, rot, scale, matrix, matrix_rot

    def write_object_tx(ob, loc, matrix, matrix_mod=None):
        """
        We have loc to set the location if non blender objects that have a location

        matrix_mod is only used for bones at the moment
        """
        loc, rot, scale, matrix, matrix_rot = object_tx(ob, loc, matrix, matrix_mod)

        fw('\n\t\t\tProperty: "Lcl Translation", "Lcl Translation", "A+",%.15f,%.15f,%.15f' % loc)
        fw('\n\t\t\tProperty: "Lcl Rotation", "Lcl Rotation", "A+",%.15f,%.15f,%.15f' % tuple_rad_to_deg(rot))
        fw('\n\t\t\tProperty: "Lcl Scaling", "Lcl Scaling", "A+",%.15f,%.15f,%.15f' % scale)
        return loc, rot, scale, matrix, matrix_rot

    def get_constraints(ob=None):
        # Set variables to their defaults.
        constraint_values = {"loc_min": (0.0, 0.0, 0.0),
                             "loc_max": (0.0, 0.0, 0.0),
                             "loc_limit": (0.0, 0.0, 0.0, 0.0, 0.0, 0.0),
                             "rot_min": (0.0, 0.0, 0.0),
                             "rot_max": (0.0, 0.0, 0.0),
                             "rot_limit": (0.0, 0.0, 0.0),
                             "sca_min": (1.0, 1.0, 1.0),
                             "sca_max": (1.0, 1.0, 1.0),
                             "sca_limit": (0.0, 0.0, 0.0, 0.0, 0.0, 0.0),
                            }

        # Iterate through the list of constraints for this object to get the information in a format which is compatible with the FBX format.
        if ob is not None:
            for constraint in ob.constraints:
                if constraint.type == 'LIMIT_LOCATION':
                    constraint_values["loc_min"] = constraint.min_x, constraint.min_y, constraint.min_z
                    constraint_values["loc_max"] = constraint.max_x, constraint.max_y, constraint.max_z
                    constraint_values["loc_limit"] = constraint.use_min_x, constraint.use_min_y, constraint.use_min_z, constraint.use_max_x, constraint.use_max_y, constraint.use_max_z
                elif constraint.type == 'LIMIT_ROTATION':
                    constraint_values["rot_min"] = math.degrees(constraint.min_x), math.degrees(constraint.min_y), math.degrees(constraint.min_z)
                    constraint_values["rot_max"] = math.degrees(constraint.max_x), math.degrees(constraint.max_y), math.degrees(constraint.max_z)
                    constraint_values["rot_limit"] = constraint.use_limit_x, constraint.use_limit_y, constraint.use_limit_z
                elif constraint.type == 'LIMIT_SCALE':
                    constraint_values["sca_min"] = constraint.min_x, constraint.min_y, constraint.min_z
                    constraint_values["sca_max"] = constraint.max_x, constraint.max_y, constraint.max_z
                    constraint_values["sca_limit"] = constraint.use_min_x, constraint.use_min_y, constraint.use_min_z, constraint.use_max_x, constraint.use_max_y, constraint.use_max_z

        # in case bad values are assigned.
        assert(len(constraint_values) == 9)

        return constraint_values

    def write_object_props(ob=None, loc=None, matrix=None, matrix_mod=None, pose_bone=None):
        # Check if a pose exists for this object and set the constraint soruce accordingly. (Poses only exsit if the object is a bone.)
        if pose_bone:
            constraints = get_constraints(pose_bone)
        else:
            constraints = get_constraints(ob)

        # if the type is 0 its an empty otherwise its a mesh
        # only difference at the moment is one has a color
        fw('''
		Properties60:  {
			Property: "QuaternionInterpolate", "bool", "",0
			Property: "Visibility", "Visibility", "A+",1''')

        loc, rot, scale, matrix, matrix_rot = write_object_tx(ob, loc, matrix, matrix_mod)

        # Rotation order, note, for FBX files Iv loaded normal order is 1
        # setting to zero.
        # eEULER_XYZ = 0
        # eEULER_XZY
        # eEULER_YZX
        # eEULER_YXZ
        # eEULER_ZXY
        # eEULER_ZYX

        fw('\n\t\t\tProperty: "RotationOffset", "Vector3D", "",0,0,0'
           '\n\t\t\tProperty: "RotationPivot", "Vector3D", "",0,0,0'
           '\n\t\t\tProperty: "ScalingOffset", "Vector3D", "",0,0,0'
           '\n\t\t\tProperty: "ScalingPivot", "Vector3D", "",0,0,0'
           '\n\t\t\tProperty: "TranslationActive", "bool", "",0'
           )

        fw('\n\t\t\tProperty: "TranslationMin", "Vector3D", "",%.15g,%.15g,%.15g' % constraints["loc_min"])
        fw('\n\t\t\tProperty: "TranslationMax", "Vector3D", "",%.15g,%.15g,%.15g' % constraints["loc_max"])
        fw('\n\t\t\tProperty: "TranslationMinX", "bool", "",%d' % constraints["loc_limit"][0])
        fw('\n\t\t\tProperty: "TranslationMinY", "bool", "",%d' % constraints["loc_limit"][1])
        fw('\n\t\t\tProperty: "TranslationMinZ", "bool", "",%d' % constraints["loc_limit"][2])
        fw('\n\t\t\tProperty: "TranslationMaxX", "bool", "",%d' % constraints["loc_limit"][3])
        fw('\n\t\t\tProperty: "TranslationMaxY", "bool", "",%d' % constraints["loc_limit"][4])
        fw('\n\t\t\tProperty: "TranslationMaxZ", "bool", "",%d' % constraints["loc_limit"][5])

        fw('\n\t\t\tProperty: "RotationOrder", "enum", "",0'
           '\n\t\t\tProperty: "RotationSpaceForLimitOnly", "bool", "",0'
           '\n\t\t\tProperty: "AxisLen", "double", "",10'
           '\n\t\t\tProperty: "PreRotation", "Vector3D", "",0,0,0'
           '\n\t\t\tProperty: "PostRotation", "Vector3D", "",0,0,0'
           '\n\t\t\tProperty: "RotationActive", "bool", "",0'
           )

        fw('\n\t\t\tProperty: "RotationMin", "Vector3D", "",%.15g,%.15g,%.15g' % constraints["rot_min"])
        fw('\n\t\t\tProperty: "RotationMax", "Vector3D", "",%.15g,%.15g,%.15g' % constraints["rot_max"])
        fw('\n\t\t\tProperty: "RotationMinX", "bool", "",%d' % constraints["rot_limit"][0])
        fw('\n\t\t\tProperty: "RotationMinY", "bool", "",%d' % constraints["rot_limit"][1])
        fw('\n\t\t\tProperty: "RotationMinZ", "bool", "",%d' % constraints["rot_limit"][2])
        fw('\n\t\t\tProperty: "RotationMaxX", "bool", "",%d' % constraints["rot_limit"][0])
        fw('\n\t\t\tProperty: "RotationMaxY", "bool", "",%d' % constraints["rot_limit"][1])
        fw('\n\t\t\tProperty: "RotationMaxZ", "bool", "",%d' % constraints["rot_limit"][2])

        fw('\n\t\t\tProperty: "RotationStiffnessX", "double", "",0'
           '\n\t\t\tProperty: "RotationStiffnessY", "double", "",0'
           '\n\t\t\tProperty: "RotationStiffnessZ", "double", "",0'
           '\n\t\t\tProperty: "MinDampRangeX", "double", "",0'
           '\n\t\t\tProperty: "MinDampRangeY", "double", "",0'
           '\n\t\t\tProperty: "MinDampRangeZ", "double", "",0'
           '\n\t\t\tProperty: "MaxDampRangeX", "double", "",0'
           '\n\t\t\tProperty: "MaxDampRangeY", "double", "",0'
           '\n\t\t\tProperty: "MaxDampRangeZ", "double", "",0'
           '\n\t\t\tProperty: "MinDampStrengthX", "double", "",0'
           '\n\t\t\tProperty: "MinDampStrengthY", "double", "",0'
           '\n\t\t\tProperty: "MinDampStrengthZ", "double", "",0'
           '\n\t\t\tProperty: "MaxDampStrengthX", "double", "",0'
           '\n\t\t\tProperty: "MaxDampStrengthY", "double", "",0'
           '\n\t\t\tProperty: "MaxDampStrengthZ", "double", "",0'
           '\n\t\t\tProperty: "PreferedAngleX", "double", "",0'
           '\n\t\t\tProperty: "PreferedAngleY", "double", "",0'
           '\n\t\t\tProperty: "PreferedAngleZ", "double", "",0'
           '\n\t\t\tProperty: "InheritType", "enum", "",0'
           '\n\t\t\tProperty: "ScalingActive", "bool", "",0'
           )

        fw('\n\t\t\tProperty: "ScalingMin", "Vector3D", "",%.15g,%.15g,%.15g' % constraints["sca_min"])
        fw('\n\t\t\tProperty: "ScalingMax", "Vector3D", "",%.15g,%.15g,%.15g' % constraints["sca_max"])
        fw('\n\t\t\tProperty: "ScalingMinX", "bool", "",%d' % constraints["sca_limit"][0])
        fw('\n\t\t\tProperty: "ScalingMinY", "bool", "",%d' % constraints["sca_limit"][1])
        fw('\n\t\t\tProperty: "ScalingMinZ", "bool", "",%d' % constraints["sca_limit"][2])
        fw('\n\t\t\tProperty: "ScalingMaxX", "bool", "",%d' % constraints["sca_limit"][3])
        fw('\n\t\t\tProperty: "ScalingMaxY", "bool", "",%d' % constraints["sca_limit"][4])
        fw('\n\t\t\tProperty: "ScalingMaxZ", "bool", "",%d' % constraints["sca_limit"][5])

        fw('\n\t\t\tProperty: "GeometricTranslation", "Vector3D", "",0,0,0'
           '\n\t\t\tProperty: "GeometricRotation", "Vector3D", "",0,0,0'
           '\n\t\t\tProperty: "GeometricScaling", "Vector3D", "",1,1,1'
           '\n\t\t\tProperty: "LookAtProperty", "object", ""'
           '\n\t\t\tProperty: "UpVectorProperty", "object", ""'
           '\n\t\t\tProperty: "Show", "bool", "",1'
           '\n\t\t\tProperty: "NegativePercentShapeSupport", "bool", "",1'
           '\n\t\t\tProperty: "DefaultAttributeIndex", "int", "",0'
           )

        if ob and not isinstance(ob, bpy.types.Bone):
            # Only mesh objects have color
            fw('\n\t\t\tProperty: "Color", "Color", "A",0.8,0.8,0.8'
               '\n\t\t\tProperty: "Size", "double", "",100'
               '\n\t\t\tProperty: "Look", "enum", "",1'
               )

        return loc, rot, scale, matrix, matrix_rot

    # -------------------------------------------- Armatures
    #def write_bone(bone, name, matrix_mod):
    def write_bone(my_bone):
        fw('\n\tModel: "Model::%s", "Limb" {' % my_bone.fbxName)
        fw('\n\t\tVersion: 232')

        #~ poseMatrix = write_object_props(my_bone.blenBone, None, None, my_bone.fbxArm.parRelMatrix())[3]
        poseMatrix = write_object_props(my_bone.blenBone, pose_bone=my_bone.getPoseBone())[3]  # dont apply bone matrices anymore

        # Use the same calculation as in write_sub_deformer_skin to compute the global
        # transform of the bone for the bind pose.
        global_matrix_bone = (my_bone.fbxArm.matrixWorld * my_bone.restMatrix) * mtx4_z90
        pose_items.append((my_bone.fbxName, global_matrix_bone))

        # fw('\n\t\t\tProperty: "Size", "double", "",%.6f' % ((my_bone.blenData.head['ARMATURESPACE'] - my_bone.blenData.tail['ARMATURESPACE']) * my_bone.fbxArm.parRelMatrix()).length)
        fw('\n\t\t\tProperty: "Size", "double", "",1')

        #((my_bone.blenData.head['ARMATURESPACE'] * my_bone.fbxArm.matrixWorld) - (my_bone.blenData.tail['ARMATURESPACE'] * my_bone.fbxArm.parRelMatrix())).length)

        """
        fw('\n\t\t\tProperty: "LimbLength", "double", "",%.6f' %\
            ((my_bone.blenBone.head['ARMATURESPACE'] - my_bone.blenBone.tail['ARMATURESPACE']) * my_bone.fbxArm.parRelMatrix()).length)
        """

        fw('\n\t\t\tProperty: "LimbLength", "double", "",%.6f' %
           (my_bone.blenBone.head_local - my_bone.blenBone.tail_local).length)

        #fw('\n\t\t\tProperty: "LimbLength", "double", "",1')
        fw('\n\t\t\tProperty: "Color", "ColorRGB", "",0.8,0.8,0.8'
           '\n\t\t\tProperty: "Color", "Color", "A",0.8,0.8,0.8'
           '\n\t\t}'
           '\n\t\tMultiLayer: 0'
           '\n\t\tMultiTake: 1'
           '\n\t\tShading: Y'
           '\n\t\tCulling: "CullingOff"'
           '\n\t\tTypeFlags: "Skeleton"'
           '\n\t}'
           )

    def write_camera_switch():
        fw('''
	Model: "Model::Camera Switcher", "CameraSwitcher" {
		Version: 232''')

        write_object_props()
        fw('''
			Property: "Color", "Color", "A",0.8,0.8,0.8
			Property: "Camera Index", "Integer", "A+",100
		}
		MultiLayer: 0
		MultiTake: 1
		Hidden: "True"
		Shading: W
		Culling: "CullingOff"
		Version: 101
		Name: "Model::Camera Switcher"
		CameraId: 0
		CameraName: 100
		CameraIndexName:
	}''')

    def write_camera_dummy(name, loc, near, far, proj_type, up):
        fw('\n\tModel: "Model::%s", "Camera" {' % name)
        fw('\n\t\tVersion: 232')
        write_object_props(None, loc)

        fw('\n\t\t\tProperty: "Color", "Color", "A",0.8,0.8,0.8'
           '\n\t\t\tProperty: "Roll", "Roll", "A+",0'
           '\n\t\t\tProperty: "FieldOfView", "FieldOfView", "A+",40'
           '\n\t\t\tProperty: "FieldOfViewX", "FieldOfView", "A+",1'
           '\n\t\t\tProperty: "FieldOfViewY", "FieldOfView", "A+",1'
           '\n\t\t\tProperty: "OpticalCenterX", "Real", "A+",0'
           '\n\t\t\tProperty: "OpticalCenterY", "Real", "A+",0'
           '\n\t\t\tProperty: "BackgroundColor", "Color", "A+",0.63,0.63,0.63'
           '\n\t\t\tProperty: "TurnTable", "Real", "A+",0'
           '\n\t\t\tProperty: "DisplayTurnTableIcon", "bool", "",1'
           '\n\t\t\tProperty: "Motion Blur Intensity", "Real", "A+",1'
           '\n\t\t\tProperty: "UseMotionBlur", "bool", "",0'
           '\n\t\t\tProperty: "UseRealTimeMotionBlur", "bool", "",1'
           '\n\t\t\tProperty: "ResolutionMode", "enum", "",0'
           '\n\t\t\tProperty: "ApertureMode", "enum", "",2'
           '\n\t\t\tProperty: "GateFit", "enum", "",0'
           '\n\t\t\tProperty: "FocalLength", "Real", "A+",21.3544940948486'
           '\n\t\t\tProperty: "CameraFormat", "enum", "",0'
           '\n\t\t\tProperty: "AspectW", "double", "",320'
           '\n\t\t\tProperty: "AspectH", "double", "",200'
           '\n\t\t\tProperty: "PixelAspectRatio", "double", "",1'
           '\n\t\t\tProperty: "UseFrameColor", "bool", "",0'
           '\n\t\t\tProperty: "FrameColor", "ColorRGB", "",0.3,0.3,0.3'
           '\n\t\t\tProperty: "ShowName", "bool", "",1'
           '\n\t\t\tProperty: "ShowGrid", "bool", "",1'
           '\n\t\t\tProperty: "ShowOpticalCenter", "bool", "",0'
           '\n\t\t\tProperty: "ShowAzimut", "bool", "",1'
           '\n\t\t\tProperty: "ShowTimeCode", "bool", "",0'
           )

        fw('\n\t\t\tProperty: "NearPlane", "double", "",%.6f' % near)
        fw('\n\t\t\tProperty: "FarPlane", "double", "",%.6f' % far)

        fw('\n\t\t\tProperty: "FilmWidth", "double", "",0.816'
           '\n\t\t\tProperty: "FilmHeight", "double", "",0.612'
           '\n\t\t\tProperty: "FilmAspectRatio", "double", "",1.33333333333333'
           '\n\t\t\tProperty: "FilmSqueezeRatio", "double", "",1'
           '\n\t\t\tProperty: "FilmFormatIndex", "enum", "",4'
           '\n\t\t\tProperty: "ViewFrustum", "bool", "",1'
           '\n\t\t\tProperty: "ViewFrustumNearFarPlane", "bool", "",0'
           '\n\t\t\tProperty: "ViewFrustumBackPlaneMode", "enum", "",2'
           '\n\t\t\tProperty: "BackPlaneDistance", "double", "",100'
           '\n\t\t\tProperty: "BackPlaneDistanceMode", "enum", "",0'
           '\n\t\t\tProperty: "ViewCameraToLookAt", "bool", "",1'
           '\n\t\t\tProperty: "LockMode", "bool", "",0'
           '\n\t\t\tProperty: "LockInterestNavigation", "bool", "",0'
           '\n\t\t\tProperty: "FitImage", "bool", "",0'
           '\n\t\t\tProperty: "Crop", "bool", "",0'
           '\n\t\t\tProperty: "Center", "bool", "",1'
           '\n\t\t\tProperty: "KeepRatio", "bool", "",1'
           '\n\t\t\tProperty: "BackgroundMode", "enum", "",0'
           '\n\t\t\tProperty: "BackgroundAlphaTreshold", "double", "",0.5'
           '\n\t\t\tProperty: "ForegroundTransparent", "bool", "",1'
           '\n\t\t\tProperty: "DisplaySafeArea", "bool", "",0'
           '\n\t\t\tProperty: "SafeAreaDisplayStyle", "enum", "",1'
           '\n\t\t\tProperty: "SafeAreaAspectRatio", "double", "",1.33333333333333'
           '\n\t\t\tProperty: "Use2DMagnifierZoom", "bool", "",0'
           '\n\t\t\tProperty: "2D Magnifier Zoom", "Real", "A+",100'
           '\n\t\t\tProperty: "2D Magnifier X", "Real", "A+",50'
           '\n\t\t\tProperty: "2D Magnifier Y", "Real", "A+",50'
           )

        fw('\n\t\t\tProperty: "CameraProjectionType", "enum", "",%i' % proj_type)

        fw('\n\t\t\tProperty: "UseRealTimeDOFAndAA", "bool", "",0'
           '\n\t\t\tProperty: "UseDepthOfField", "bool", "",0'
           '\n\t\t\tProperty: "FocusSource", "enum", "",0'
           '\n\t\t\tProperty: "FocusAngle", "double", "",3.5'
           '\n\t\t\tProperty: "FocusDistance", "double", "",200'
           '\n\t\t\tProperty: "UseAntialiasing", "bool", "",0'
           '\n\t\t\tProperty: "AntialiasingIntensity", "double", "",0.77777'
           '\n\t\t\tProperty: "UseAccumulationBuffer", "bool", "",0'
           '\n\t\t\tProperty: "FrameSamplingCount", "int", "",7'
           '\n\t\t}'
           '\n\t\tMultiLayer: 0'
           '\n\t\tMultiTake: 0'
           '\n\t\tHidden: "True"'
           '\n\t\tShading: Y'
           '\n\t\tCulling: "CullingOff"'
           '\n\t\tTypeFlags: "Camera"'
           '\n\t\tGeometryVersion: 124'
           )

        fw('\n\t\tPosition: %.6f,%.6f,%.6f' % loc)
        fw('\n\t\tUp: %i,%i,%i' % up)

        fw('\n\t\tLookAt: 0,0,0'
           '\n\t\tShowInfoOnMoving: 1'
           '\n\t\tShowAudio: 0'
           '\n\t\tAudioColor: 0,1,0'
           '\n\t\tCameraOrthoZoom: 1'
           '\n\t}'
           )

    def write_camera_default():
        # This sucks but to match FBX converter its easier to
        # write the cameras though they are not needed.
        write_camera_dummy('Producer Perspective', (0, 71.3, 287.5), 10, 4000, 0, (0, 1, 0))
        write_camera_dummy('Producer Top', (0, 4000, 0), 1, 30000, 1, (0, 0, -1))
        write_camera_dummy('Producer Bottom', (0, -4000, 0), 1, 30000, 1, (0, 0, -1))
        write_camera_dummy('Producer Front', (0, 0, 4000), 1, 30000, 1, (0, 1, 0))
        write_camera_dummy('Producer Back', (0, 0, -4000), 1, 30000, 1, (0, 1, 0))
        write_camera_dummy('Producer Right', (4000, 0, 0), 1, 30000, 1, (0, 1, 0))
        write_camera_dummy('Producer Left', (-4000, 0, 0), 1, 30000, 1, (0, 1, 0))

    def write_camera(my_cam):
        """
        Write a blender camera
        """
        render = scene.render
        width = render.resolution_x
        height = render.resolution_y
        aspect = width / height

        data = my_cam.blenObject.data
        # film width & height from mm to inches
        filmwidth = data.sensor_width * 0.0393700787
        filmheight = data.sensor_height * 0.0393700787
        filmaspect = filmwidth / filmheight
        # film offset
        offsetx = filmwidth * data.shift_x
        offsety = filmaspect * filmheight * data.shift_y

        fw('\n\tModel: "Model::%s", "Camera" {' % my_cam.fbxName)
        fw('\n\t\tVersion: 232')
        loc, rot, scale, matrix, matrix_rot = write_object_props(my_cam.blenObject, None, my_cam.parRelMatrix())

        fw('\n\t\t\tProperty: "Roll", "Roll", "A+",0')
        fw('\n\t\t\tProperty: "FieldOfView", "FieldOfView", "A+",%.6f' % math.degrees(data.angle_x))
        fw('\n\t\t\tProperty: "FieldOfViewX", "FieldOfView", "A+",%.6f' % math.degrees(data.angle_x))
        fw('\n\t\t\tProperty: "FieldOfViewY", "FieldOfView", "A+",%.6f' % math.degrees(data.angle_y))

        fw('\n\t\t\tProperty: "FocalLength", "Number", "A+",%.6f' % data.lens)
        fw('\n\t\t\tProperty: "FilmOffsetX", "Number", "A+",%.6f' % offsetx)
        fw('\n\t\t\tProperty: "FilmOffsetY", "Number", "A+",%.6f' % offsety)

        fw('\n\t\t\tProperty: "BackgroundColor", "Color", "A+",0,0,0'
           '\n\t\t\tProperty: "TurnTable", "Real", "A+",0'
           '\n\t\t\tProperty: "DisplayTurnTableIcon", "bool", "",1'
           '\n\t\t\tProperty: "Motion Blur Intensity", "Real", "A+",1'
           '\n\t\t\tProperty: "UseMotionBlur", "bool", "",0'
           '\n\t\t\tProperty: "UseRealTimeMotionBlur", "bool", "",1'
           '\n\t\t\tProperty: "ResolutionMode", "enum", "",0'
            # note that aperture mode 3 is focal length and not horizontal
           '\n\t\t\tProperty: "ApertureMode", "enum", "",3'  # horizontal - Houdini compatible
           '\n\t\t\tProperty: "GateFit", "enum", "",2'
           '\n\t\t\tProperty: "CameraFormat", "enum", "",0'
           )

        fw('\n\t\t\tProperty: "AspectW", "double", "",%i' % width)
        fw('\n\t\t\tProperty: "AspectH", "double", "",%i' % height)

        """Camera aspect ratio modes.
            0 If the ratio mode is eWINDOW_SIZE, both width and height values aren't relevant.
            1 If the ratio mode is eFIXED_RATIO, the height value is set to 1.0 and the width value is relative to the height value.
            2 If the ratio mode is eFIXED_RESOLUTION, both width and height values are in pixels.
            3 If the ratio mode is eFIXED_WIDTH, the width value is in pixels and the height value is relative to the width value.
            4 If the ratio mode is eFIXED_HEIGHT, the height value is in pixels and the width value is relative to the height value.

        Definition at line 234 of file kfbxcamera.h. """

        fw('\n\t\t\tProperty: "PixelAspectRatio", "double", "",1'
           '\n\t\t\tProperty: "UseFrameColor", "bool", "",0'
           '\n\t\t\tProperty: "FrameColor", "ColorRGB", "",0.3,0.3,0.3'
           '\n\t\t\tProperty: "ShowName", "bool", "",1'
           '\n\t\t\tProperty: "ShowGrid", "bool", "",1'
           '\n\t\t\tProperty: "ShowOpticalCenter", "bool", "",0'
           '\n\t\t\tProperty: "ShowAzimut", "bool", "",1'
           '\n\t\t\tProperty: "ShowTimeCode", "bool", "",0'
           )

        fw('\n\t\t\tProperty: "NearPlane", "double", "",%.6f' % (data.clip_start * global_scale))
        fw('\n\t\t\tProperty: "FarPlane", "double", "",%.6f' % (data.clip_end * global_scale))

        fw('\n\t\t\tProperty: "FilmWidth", "double", "",%.6f' % filmwidth)
        fw('\n\t\t\tProperty: "FilmHeight", "double", "",%.6f' % filmheight)
        fw('\n\t\t\tProperty: "FilmAspectRatio", "double", "",%.6f' % filmaspect)

        fw('\n\t\t\tProperty: "FilmSqueezeRatio", "double", "",1'
           '\n\t\t\tProperty: "FilmFormatIndex", "enum", "",0'
           '\n\t\t\tProperty: "ViewFrustum", "bool", "",1'
           '\n\t\t\tProperty: "ViewFrustumNearFarPlane", "bool", "",0'
           '\n\t\t\tProperty: "ViewFrustumBackPlaneMode", "enum", "",2'
           '\n\t\t\tProperty: "BackPlaneDistance", "double", "",100'
           '\n\t\t\tProperty: "BackPlaneDistanceMode", "enum", "",0'
           '\n\t\t\tProperty: "ViewCameraToLookAt", "bool", "",1'
           '\n\t\t\tProperty: "LockMode", "bool", "",0'
           '\n\t\t\tProperty: "LockInterestNavigation", "bool", "",0'
           '\n\t\t\tProperty: "FitImage", "bool", "",0'
           '\n\t\t\tProperty: "Crop", "bool", "",0'
           '\n\t\t\tProperty: "Center", "bool", "",1'
           '\n\t\t\tProperty: "KeepRatio", "bool", "",1'
           '\n\t\t\tProperty: "BackgroundMode", "enum", "",0'
           '\n\t\t\tProperty: "BackgroundAlphaTreshold", "double", "",0.5'
           '\n\t\t\tProperty: "ForegroundTransparent", "bool", "",1'
           '\n\t\t\tProperty: "DisplaySafeArea", "bool", "",0'
           '\n\t\t\tProperty: "SafeAreaDisplayStyle", "enum", "",1'
           )

        fw('\n\t\t\tProperty: "SafeAreaAspectRatio", "double", "",%.6f' % aspect)

        fw('\n\t\t\tProperty: "Use2DMagnifierZoom", "bool", "",0'
           '\n\t\t\tProperty: "2D Magnifier Zoom", "Real", "A+",100'
           '\n\t\t\tProperty: "2D Magnifier X", "Real", "A+",50'
           '\n\t\t\tProperty: "2D Magnifier Y", "Real", "A+",50'
           '\n\t\t\tProperty: "CameraProjectionType", "enum", "",0'
           '\n\t\t\tProperty: "UseRealTimeDOFAndAA", "bool", "",0'
           '\n\t\t\tProperty: "UseDepthOfField", "bool", "",0'
           '\n\t\t\tProperty: "FocusSource", "enum", "",0'
           '\n\t\t\tProperty: "FocusAngle", "double", "",3.5'
           '\n\t\t\tProperty: "FocusDistance", "double", "",200'
           '\n\t\t\tProperty: "UseAntialiasing", "bool", "",0'
           '\n\t\t\tProperty: "AntialiasingIntensity", "double", "",0.77777'
           '\n\t\t\tProperty: "UseAccumulationBuffer", "bool", "",0'
           '\n\t\t\tProperty: "FrameSamplingCount", "int", "",7'
           )

        fw('\n\t\t}')

        fw('\n\t\tMultiLayer: 0'
           '\n\t\tMultiTake: 0'
           '\n\t\tShading: Y'
           '\n\t\tCulling: "CullingOff"'
           '\n\t\tTypeFlags: "Camera"'
           '\n\t\tGeometryVersion: 124'
           )

        fw('\n\t\tPosition: %.6f,%.6f,%.6f' % loc)
        fw('\n\t\tUp: %.6f,%.6f,%.6f' % (matrix_rot * Vector((0.0, 1.0, 0.0)))[:])
        fw('\n\t\tLookAt: %.6f,%.6f,%.6f' % (matrix_rot * Vector((0.0, 0.0, -1.0)))[:])

        #fw('\n\t\tUp: 0,0,0' )
        #fw('\n\t\tLookAt: 0,0,0' )

        fw('\n\t\tShowInfoOnMoving: 1')
        fw('\n\t\tShowAudio: 0')
        fw('\n\t\tAudioColor: 0,1,0')
        fw('\n\t\tCameraOrthoZoom: 1')
        fw('\n\t}')