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    cc9f663c
    Small changes to images as planes: · cc9f663c
    Bastien Montagne authored
    *Use absolute as default size mode (dpi with BU is not that nice).
    *Use default plane primitive instead of creating our own square (this way we can be sure things like verts order will always match those of default plane!), request from Christopher Barrett in tracker.
    cc9f663c
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    Small changes to images as planes:
    Bastien Montagne authored
    *Use absolute as default size mode (dpi with BU is not that nice).
    *Use default plane primitive instead of creating our own square (this way we can be sure things like verts order will always match those of default plane!), request from Christopher Barrett in tracker.
io_import_images_as_planes.py 23.23 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 #####

bl_info = {
    "name": "Import Images as Planes",
    "author": "Florian Meyer (tstscr), mont29, matali",
    "version": (1, 9),
    "blender": (2, 66, 4),
    "location": "File > Import > Images as Planes or Add > Mesh > Images as Planes",
    "description": "Imports images and creates planes with the appropriate aspect ratio. "
                   "The images are mapped to the planes.",
    "warning": "",
    "wiki_url": "http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Add_Mesh/Planes_from_Images",
    "tracker_url": "https://projects.blender.org/tracker/index.php?func=detail&aid=21751",
    "category": "Import-Export"}

import bpy
from bpy.types import Operator
import mathutils
import os
import collections

from bpy.props import (StringProperty,
                       BoolProperty,
                       EnumProperty,
                       IntProperty,
                       FloatProperty,
                       CollectionProperty,
                       )

from bpy_extras.object_utils import AddObjectHelper, object_data_add
from bpy_extras.image_utils import load_image

# -----------------------------------------------------------------------------
# Global Vars

DEFAULT_EXT = "*"

EXT_FILTER = getattr(collections, "OrderedDict", dict)((
    (DEFAULT_EXT, ((), "All image formats", "Import all know image (or movie) formats.")),
    ("jpeg", (("jpeg", "jpg", "jpe"), "JPEG ({})", "Joint Photographic Experts Group")),
    ("png", (("png", ), "PNG ({})", "Portable Network Graphics")),
    ("tga", (("tga", "tpic"), "Truevision TGA ({})", "")),
    ("tiff", (("tiff", "tif"), "TIFF ({})", "Tagged Image File Format")),
    ("bmp", (("bmp", "dib"), "BMP ({})", "Windows Bitmap")),
    ("cin", (("cin", ), "CIN ({})", "")),
    ("dpx", (("dpx", ), "DPX ({})", "DPX (Digital Picture Exchange)")),
    ("psd", (("psd", ), "PSD ({})", "Photoshop Document")),
    ("exr", (("exr", ), "OpenEXR ({})", "OpenEXR HDR imaging image file format")),
    ("hdr", (("hdr", "pic"), "Radiance HDR ({})", "")),
    ("avi", (("avi", ), "AVI ({})", "Audio Video Interleave")),
    ("mov", (("mov", "qt"), "QuickTime ({})", "")),
    ("mp4", (("mp4", ), "MPEG-4 ({})", "MPEG-4 Part 14")),
    ("ogg", (("ogg", "ogv"), "OGG Theora ({})", "")),
))

# XXX Hack to avoid allowing videos with Cycles, crashes currently!
VID_EXT_FILTER = {e for ext_k, ext_v in EXT_FILTER.items() if ext_k in {"avi", "mov", "mp4", "ogg"} for e in ext_v[0]}

CYCLES_SHADERS = (
    ('BSDF_DIFFUSE', "Diffuse", "Diffuse Shader"),
    ('EMISSION', "Emission", "Emission Shader"),
    ('BSDF_DIFFUSE_BSDF_TRANSPARENT', "Diffuse & Transparent", "Diffuse and Transparent Mix"),
    ('EMISSION_BSDF_TRANSPARENT', "Emission & Transparent", "Emission and Transparent Mix")
)

# -----------------------------------------------------------------------------
# Misc utils.
def gen_ext_filter_ui_items():
    return tuple((k, name.format(", ".join("." + e for e in exts)) if "{}" in name else name, desc)
                 for k, (exts, name, desc) in EXT_FILTER.items())


def is_image_fn(fn, ext_key):
    if ext_key == DEFAULT_EXT:
        return True  # Using Blender's image/movie filter.
    ext = os.path.splitext(fn)[1].lstrip(".").lower()
    return ext in EXT_FILTER[ext_key][0]


# -----------------------------------------------------------------------------
# Cycles utils.
def get_input_nodes(node, nodes, links):
    # Get all links going to node.
    input_links = {lnk for lnk in links if lnk.to_node == node}
    # Sort those links, get their input nodes (and avoid doubles!).
    sorted_nodes = []
    done_nodes = set()
    for socket in node.inputs:
        done_links = set()
        for link in input_links:
            nd = link.from_node
            if nd in done_nodes:
                # Node already treated!
                done_links.add(link)
            elif link.to_socket == socket:
                sorted_nodes.append(nd)
                done_links.add(link)
                done_nodes.add(nd)
        input_links -= done_links
    return sorted_nodes


def auto_align_nodes(node_tree):
    print('\nAligning Nodes')
    x_gap = 200
    y_gap = 100
    nodes = node_tree.nodes
    links = node_tree.links
    to_node = None
    for node in nodes:
        if node.type == 'OUTPUT_MATERIAL':
            to_node = node
            break
    if not to_node:
        return  # Unlikely, but bette check anyway...

    def align(to_node, nodes, links):
        from_nodes = get_input_nodes(to_node, nodes, links)
        for i, node in enumerate(from_nodes):
            node.location.x = to_node.location.x - x_gap
            node.location.y = to_node.location.y
            node.location.y -= i * y_gap
            node.location.y += (len(from_nodes)-1) * y_gap / (len(from_nodes))
            align(node, nodes, links)

    align(to_node, nodes, links)


def clean_node_tree(node_tree):
    nodes = node_tree.nodes
    for node in nodes:
        if not node.type == 'OUTPUT_MATERIAL':
            nodes.remove(node)
    return node_tree.nodes[0]


# -----------------------------------------------------------------------------
# Operator

class IMPORT_OT_image_to_plane(Operator, AddObjectHelper):
    """Create mesh plane(s) from image files with the appropiate aspect ratio"""
    bl_idname = "import_image.to_plane"
    bl_label = "Import Images as Planes"
    bl_options = {'REGISTER', 'UNDO'}

    # -----------
    # File props.
    files = CollectionProperty(type=bpy.types.OperatorFileListElement, options={'HIDDEN', 'SKIP_SAVE'})

    directory = StringProperty(maxlen=1024, subtype='FILE_PATH', options={'HIDDEN', 'SKIP_SAVE'})

    # Show only images/videos, and directories!
    filter_image = BoolProperty(default=True, options={'HIDDEN', 'SKIP_SAVE'})
    filter_movie = BoolProperty(default=True, options={'HIDDEN', 'SKIP_SAVE'})
    filter_folder = BoolProperty(default=True, options={'HIDDEN', 'SKIP_SAVE'})
    filter_glob = StringProperty(default="", options={'HIDDEN', 'SKIP_SAVE'})

    # --------
    # Options.
    align = BoolProperty(name="Align Planes", default=True, description="Create Planes in a row")

    align_offset = FloatProperty(name="Offset", min=0, soft_min=0, default=0.1, description="Space between Planes")

    # Callback which will update File window's filter options accordingly to extension setting.
    def update_extensions(self, context):
        is_cycles = context.scene.render.engine == 'CYCLES'
        if self.extension == DEFAULT_EXT:
            self.filter_image = True
            # XXX Hack to avoid allowing videos with Cycles, crashes currently!
            self.filter_movie = True and not is_cycles
            self.filter_glob = ""
        else:
            self.filter_image = False
            self.filter_movie = False
            if is_cycles:
                # XXX Hack to avoid allowing videos with Cycles!
                flt = ";".join(("*." + e for e in EXT_FILTER[self.extension][0] if e not in VID_EXT_FILTER))
            else:
                flt = ";".join(("*." + e for e in EXT_FILTER[self.extension][0]))
            self.filter_glob = flt
        # And now update space (file select window), if possible.
        space = bpy.context.space_data
        # XXX Can't use direct op comparison, these are not the same objects!
        if (space.type != 'FILE_BROWSER' or space.operator.bl_rna.identifier != self.bl_rna.identifier):
            return
        space.params.use_filter_image = self.filter_image
        space.params.use_filter_movie = self.filter_movie
        space.params.filter_glob = self.filter_glob
        # XXX Seems to be necessary, else not all changes above take effect...
        bpy.ops.file.refresh()
    extension = EnumProperty(name="Extension", items=gen_ext_filter_ui_items(),
                             description="Only import files of this type", update=update_extensions)

    # -------------------
    # Plane size options.
    _size_modes = (
        ('ABSOLUTE', "Absolute", "Use absolute size"),
        ('DPI', "Dpi", "Use definition of the image as dots per inch"),
        ('DPBU', "Dots/BU", "Use definition of the image as dots per Blender Unit"),
    )
    size_mode = EnumProperty(name="Size Mode", default='ABSOLUTE', items=_size_modes,
                             description="How the size of the plane is computed")

    height = FloatProperty(name="Height", description="Height of the created plane",
                           default=1.0, min=0.001, soft_min=0.001, subtype='DISTANCE', unit='LENGTH')

    factor = FloatProperty(name="Definition", min=1.0, default=600.0,
                           description="Number of pixels per inch or Blender Unit")

    # -------------------------
    # Blender material options.
    t = bpy.types.Material.bl_rna.properties["use_shadeless"]
    use_shadeless = BoolProperty(name=t.name, default=False, description=t.description)

    use_transparency = BoolProperty(name="Use Alpha", default=False, description="Use alphachannel for transparency")

    t = bpy.types.Material.bl_rna.properties["transparency_method"]
    items = tuple((it.identifier, it.name, it.description) for it in t.enum_items)
    transparency_method = EnumProperty(name="Transp. Method", description=t.description, items=items)

    t = bpy.types.Material.bl_rna.properties["use_transparent_shadows"]
    use_transparent_shadows = BoolProperty(name=t.name, default=False, description=t.description)

    #-------------------------
    # Cycles material options.
    shader = EnumProperty(name="Shader", items=CYCLES_SHADERS, description="Node shader to use")

    overwrite_node_tree = BoolProperty(name="Overwrite Material", default=True,
                                       description="Overwrite existing Material with new nodetree "
                                                   "(based on material name)")

    # --------------
    # Image Options.
    t = bpy.types.Image.bl_rna.properties["alpha_mode"]
    alpha_mode_items = tuple((e.identifier, e.name, e.description) for e in t.enum_items)
    alpha_mode = EnumProperty(name=t.name, items=alpha_mode_items, default=t.default, description=t.description)

    t = bpy.types.IMAGE_OT_match_movie_length.bl_rna
    match_len = BoolProperty(name=t.name, default=True, description=t.description)

    t = bpy.types.Image.bl_rna.properties["use_fields"]
    use_fields = BoolProperty(name=t.name, default=False, description=t.description)

    t = bpy.types.ImageUser.bl_rna.properties["use_auto_refresh"]
    use_auto_refresh = BoolProperty(name=t.name, default=True, description=t.description)

    relative = BoolProperty(name="Relative", default=True, description="Apply relative paths")

    def draw(self, context):
        engine = context.scene.render.engine
        layout = self.layout

        box = layout.box()
        box.label("Import Options:", icon='FILTER')
        box.prop(self, "extension", icon='FILE_IMAGE')
        box.prop(self, "align")
        box.prop(self, "align_offset")

        row = box.row()
        row.active = bpy.data.is_saved
        row.prop(self, "relative")
        # XXX Hack to avoid allowing videos with Cycles, crashes currently!
        if engine == 'BLENDER_RENDER':
            box.prop(self, "match_len")
            box.prop(self, "use_fields")
            box.prop(self, "use_auto_refresh")

        box = layout.box()
        if engine == 'BLENDER_RENDER':
            box.label("Material Settings: (Blender)", icon='MATERIAL')
            box.prop(self, "use_shadeless")
            box.prop(self, "use_transparency")
            box.prop(self, "alpha_mode")
            row = box.row()
            row.prop(self, "transparency_method", expand=True)
            box.prop(self, "use_transparent_shadows")
        elif engine == 'CYCLES':
            box = layout.box()
            box.label("Material Settings: (Cycles)", icon='MATERIAL')
            box.prop(self, 'shader', expand = True)
            box.prop(self, 'overwrite_node_tree')

        box = layout.box()
        box.label("Plane dimensions:", icon='ARROW_LEFTRIGHT')
        row = box.row()
        row.prop(self, "size_mode", expand=True)
        if self.size_mode == 'ABSOLUTE':
            box.prop(self, "height")
        else:
            box.prop(self, "factor")

    def invoke(self, context, event):
        self.update_extensions(context)
        context.window_manager.fileselect_add(self)
        return {'RUNNING_MODAL'}

    def execute(self, context):
        if not bpy.data.is_saved:
            self.relative = False

        # the add utils don't work in this case because many objects are added disable relevant things beforehand
        editmode = context.user_preferences.edit.use_enter_edit_mode
        context.user_preferences.edit.use_enter_edit_mode = False
        if (context.active_object and
            context.active_object.mode == 'EDIT'):
            bpy.ops.object.mode_set(mode='OBJECT')

        self.import_images(context)

        context.user_preferences.edit.use_enter_edit_mode = editmode
        return {'FINISHED'}

    # Main...
    def import_images(self, context):
        engine = context.scene.render.engine
        import_list, directory = self.generate_paths()

        images = (load_image(path, directory) for path in import_list)

        if engine == 'BLENDER_RENDER':
            textures = []
            for img in images:
                self.set_image_options(img)
                textures.append(self.create_image_textures(context, img))

            materials = (self.create_material_for_texture(tex) for tex in textures)

        elif engine == 'CYCLES':
            materials = (self.create_cycles_material(img) for img in images)

        planes = tuple(self.create_image_plane(context, mat) for mat in materials)

        context.scene.update()
        if self.align:
            self.align_planes(planes)

        for plane in planes:
            plane.select = True

        self.report({'INFO'}, "Added {} Image Plane(s)".format(len(planes)))

    def create_image_plane(self, context, material):
        engine = context.scene.render.engine
        if engine == 'BLENDER_RENDER':
            img = material.texture_slots[0].texture.image
        elif engine == 'CYCLES':
            nodes = material.node_tree.nodes
            img = next((node.image for node in nodes if node.type == 'TEX_IMAGE'))
        px, py = img.size

        # can't load data
        if px == 0 or py == 0:
            px = py = 1

        if self.size_mode == 'ABSOLUTE':
            y = self.height
            x = px / py * y
        elif self.size_mode == 'DPI':
            fact = 1 / self.factor / context.scene.unit_settings.scale_length * 0.0254
            x = px * fact
            y = py * fact
        else:  # elif self.size_mode == 'DPBU'
            fact = 1 / self.factor
            x = px * fact
            y = py * fact

        bpy.ops.mesh.primitive_plane_add('INVOKE_REGION_WIN')
        plane = context.scene.objects.active
        # Why does mesh.primitive_plane_add leave the object in edit mode???
        if plane.mode is not 'OBJECT':
            bpy.ops.object.mode_set(mode='OBJECT')
        plane.dimensions = x, y, 0.0
        bpy.ops.object.transform_apply(scale=True)
        plane.data.uv_textures.new()
        plane.data.materials.append(material)
        plane.data.uv_textures[0].data[0].image = img

        material.game_settings.use_backface_culling = False
        material.game_settings.alpha_blend = 'ALPHA'
        return plane

    def align_planes(self, planes):
        gap = self.align_offset
        offset = 0
        for i, plane in enumerate(planes):
            offset += (plane.dimensions.x / 2.0) + gap
            if i == 0:
                continue
            move_local = mathutils.Vector((offset, 0.0, 0.0))
            move_world = plane.location + move_local * plane.matrix_world.inverted()
            plane.location += move_world
            offset += (plane.dimensions.x / 2.0)

    def generate_paths(self):
        return (fn.name for fn in self.files if is_image_fn(fn.name, self.extension)), self.directory

    # Internal
    def create_image_textures(self, context, image):
        fn_full = os.path.normpath(bpy.path.abspath(image.filepath))

        # look for texture with importsettings
        for texture in bpy.data.textures:
            if texture.type == 'IMAGE':
                tex_img = texture.image
                if (tex_img is not None) and (tex_img.library is None):
                    fn_tex_full = os.path.normpath(bpy.path.abspath(tex_img.filepath))
                    if fn_full == fn_tex_full:
                        self.set_texture_options(context, texture)
                        return texture

        # if no texture is found: create one
        name_compat = bpy.path.display_name_from_filepath(image.filepath)
        texture = bpy.data.textures.new(name=name_compat, type='IMAGE')
        texture.image = image
        self.set_texture_options(context, texture)
        return texture

    def create_material_for_texture(self, texture):
        # look for material with the needed texture
        for material in bpy.data.materials:
            slot = material.texture_slots[0]
            if slot and slot.texture == texture:
                self.set_material_options(material, slot)
                return material

        # if no material found: create one
        name_compat = bpy.path.display_name_from_filepath(texture.image.filepath)
        material = bpy.data.materials.new(name=name_compat)
        slot = material.texture_slots.add()
        slot.texture = texture
        slot.texture_coords = 'UV'
        self.set_material_options(material, slot)
        return material

    def set_image_options(self, image):
        image.alpha_mode = self.alpha_mode
        image.use_fields = self.use_fields

        if self.relative:
            image.filepath = bpy.path.relpath(image.filepath)

    def set_texture_options(self, context, texture):
        texture.image.use_alpha = self.use_transparency
        texture.image_user.use_auto_refresh = self.use_auto_refresh
        if self.match_len:
            ctx = context.copy()
            ctx["edit_image"] = texture.image
            ctx["edit_image_user"] = texture.image_user
            bpy.ops.image.match_movie_length(ctx)

    def set_material_options(self, material, slot):
        if self.use_transparency:
            material.alpha = 0.0
            material.specular_alpha = 0.0
            slot.use_map_alpha = True
        else:
            material.alpha = 1.0
            material.specular_alpha = 1.0
            slot.use_map_alpha = False
        material.use_transparency = self.use_transparency
        material.transparency_method = self.transparency_method
        material.use_shadeless = self.use_shadeless
        material.use_transparent_shadows = self.use_transparent_shadows

    #--------------------------------------------------------------------------
    # Cycles
    def create_cycles_material(self, image):
        name_compat = bpy.path.display_name_from_filepath(image.filepath)
        material = None
        for mat in bpy.data.materials:
            if mat.name == name_compat and self.overwrite_node_tree:
                material = mat
        if not material:
            material = bpy.data.materials.new(name=name_compat)

        material.use_nodes = True
        node_tree = material.node_tree
        out_node = clean_node_tree(node_tree)

        if self.shader == 'BSDF_DIFFUSE':
            bsdf_diffuse = node_tree.nodes.new('ShaderNodeBsdfDiffuse')
            tex_image = node_tree.nodes.new('ShaderNodeTexImage')
            tex_image.image = image
            tex_image.show_texture = True
            node_tree.links.new(out_node.inputs[0], bsdf_diffuse.outputs[0])
            node_tree.links.new(bsdf_diffuse.inputs[0], tex_image.outputs[0])

        elif self.shader == 'EMISSION':
            emission = node_tree.nodes.new('ShaderNodeEmission')
            lightpath = node_tree.nodes.new('ShaderNodeLightPath')
            tex_image = node_tree.nodes.new('ShaderNodeTexImage')
            tex_image.image = image
            tex_image.show_texture = True
            node_tree.links.new(out_node.inputs[0], emission.outputs[0])
            node_tree.links.new(emission.inputs[0], tex_image.outputs[0])
            node_tree.links.new(emission.inputs[1], lightpath.outputs[0])

        elif self.shader == 'BSDF_DIFFUSE_BSDF_TRANSPARENT':
            bsdf_diffuse = node_tree.nodes.new('ShaderNodeBsdfDiffuse')
            bsdf_transparent = node_tree.nodes.new('ShaderNodeBsdfTransparent')
            mix_shader = node_tree.nodes.new('ShaderNodeMixShader')
            tex_image = node_tree.nodes.new('ShaderNodeTexImage')
            tex_image.image = image
            tex_image.show_texture = True
            node_tree.links.new(out_node.inputs[0], mix_shader.outputs[0])
            node_tree.links.new(mix_shader.inputs[0], tex_image.outputs[1])
            node_tree.links.new(mix_shader.inputs[2], bsdf_diffuse.outputs[0])
            node_tree.links.new(mix_shader.inputs[1], bsdf_transparent.outputs[0])
            node_tree.links.new(bsdf_diffuse.inputs[0], tex_image.outputs[0])

        elif self.shader == 'EMISSION_BSDF_TRANSPARENT':
            emission = node_tree.nodes.new('ShaderNodeEmission')
            lightpath = node_tree.nodes.new('ShaderNodeLightPath')
            bsdf_transparent = node_tree.nodes.new('ShaderNodeBsdfTransparent')
            mix_shader = node_tree.nodes.new('ShaderNodeMixShader')
            tex_image = node_tree.nodes.new('ShaderNodeTexImage')
            tex_image.image = image
            tex_image.show_texture = True
            node_tree.links.new(out_node.inputs[0], mix_shader.outputs[0])
            node_tree.links.new(mix_shader.inputs[0], tex_image.outputs[1])
            node_tree.links.new(mix_shader.inputs[2], emission.outputs[0])
            node_tree.links.new(mix_shader.inputs[1], bsdf_transparent.outputs[0])
            node_tree.links.new(emission.inputs[0], tex_image.outputs[0])
            node_tree.links.new(emission.inputs[1], lightpath.outputs[0])

        auto_align_nodes(node_tree)
        return material


# -----------------------------------------------------------------------------
# Register
def import_images_button(self, context):
    self.layout.operator(IMPORT_OT_image_to_plane.bl_idname,
                         text="Images as Planes", icon='TEXTURE')


def register():
    bpy.utils.register_module(__name__)
    bpy.types.INFO_MT_file_import.append(import_images_button)
    bpy.types.INFO_MT_mesh_add.append(import_images_button)


def unregister():
    bpy.utils.unregister_module(__name__)
    bpy.types.INFO_MT_file_import.remove(import_images_button)
    bpy.types.INFO_MT_mesh_add.remove(import_images_button)


if __name__ == "__main__":
    register()