def add_and_get_view(
self, binary_data: gltf2_io_binary_data.BinaryData
) -> gltf2_io.BufferView:
"""Add binary data to the buffer. Return a glTF BufferView."""
offset = len(self.__data)
self.__data += binary_data.data
# offsets should be a multiple of 4 --> therefore add padding if necessary
padding = (4 - (binary_data.byte_length % 4)) % 4
self.__data += b"\x00" * padding
buffer_view = gltf2_io.BufferView(buffer=self.__buffer_index,
byte_length=binary_data.byte_length,
byte_offset=offset,
byte_stride=None,
extensions=None,
extras=None,
name=None,
target=None)
return buffer_view
def __init__(self, export_settings):
self.export_settings = export_settings
self.__finalized = False
copyright = export_settings[
gltf2_blender_export_keys.COPYRIGHT] or None
asset = gltf2_io.Asset(copyright=copyright,
extensions=None,
extras=None,
generator='Khronos glTF Blender I/O v' +
get_version_string(),
min_version=None,
version='2.0')
self.component_nb_dict = {}
self.component_nb_dict['SCALAR'] = 1
self.component_nb_dict['VEC2'] = 2
self.component_nb_dict['VEC3'] = 3
self.component_nb_dict['VEC4'] = 4
self.component_nb_dict['MAT2'] = 4
self.component_nb_dict['MAT3'] = 9
self.component_nb_dict['MAT4'] = 16
self.__gltf = gltf2_io.Gltf(accessors=[],
animations=[],
asset=asset,
buffers=[],
buffer_views=[],
cameras=[],
extensions={},
extensions_required=[],
extensions_used=[],
extras=None,
images=[],
materials=[],
meshes=[],
nodes=[],
samplers=[],
scene=-1,
scenes=[],
skins=[],
textures=[])
self.__buffer = gltf2_io_buffer.Buffer()
self.__images = {}
# mapping of all glTFChildOfRootProperty types to their corresponding root level arrays
self.__childOfRootPropertyTypeLookup = {
gltf2_io.Accessor: self.__gltf.accessors,
gltf2_io.Animation: self.__gltf.animations,
gltf2_io.Buffer: self.__gltf.buffers,
gltf2_io.BufferView: self.__gltf.buffer_views,
gltf2_io.Camera: self.__gltf.cameras,
gltf2_io.Image: self.__gltf.images,
gltf2_io.Material: self.__gltf.materials,
gltf2_io.Mesh: self.__gltf.meshes,
gltf2_io.Node: self.__gltf.nodes,
gltf2_io.Sampler: self.__gltf.samplers,
gltf2_io.Scene: self.__gltf.scenes,
gltf2_io.Skin: self.__gltf.skins,
gltf2_io.Texture: self.__gltf.textures
}
self.__propertyTypeLookup = [
gltf2_io.AccessorSparseIndices, gltf2_io.AccessorSparse,
gltf2_io.AccessorSparseValues, gltf2_io.AnimationChannel,
gltf2_io.AnimationChannelTarget, gltf2_io.AnimationSampler,
gltf2_io.Asset, gltf2_io.CameraOrthographic,
gltf2_io.CameraPerspective, gltf2_io.MeshPrimitive,
gltf2_io.TextureInfo, gltf2_io.MaterialPBRMetallicRoughness,
gltf2_io.MaterialNormalTextureInfoClass,
gltf2_io.MaterialOcclusionTextureInfoClass
]
# These are the 8 predefined buffer views that asobo models use
# No other buffer views should be created
self.__asobo_buffer_views = {
'bufferViewFloatMat4': None,
'bufferViewAnimationFloatScalar': None,
'bufferViewAnimationFloatVec3': None,
'bufferViewAnimationFloatVec4': None,
'BufferViewVertexND': None,
'BufferViewIndex': None,
'BufferViewVertex4Blend': None,
'BufferViewVertex1Blend': None,
}
self.__asobo_buffer_views['bufferViewFloatMat4'] = gltf2_io.BufferView(
buffer=gltf2_io_asobo_buffer.AsoboBuffer(),
byte_length=0,
byte_offset=None,
byte_stride=None,
extensions=None,
extras=None,
name='bufferViewFloatMat4',
target=None)
self.__gltf.buffer_views.append(
self.__asobo_buffer_views['bufferViewFloatMat4'])
self.__asobo_buffer_views[
'bufferViewAnimationFloatScalar'] = gltf2_io.BufferView(
buffer=gltf2_io_asobo_buffer.AsoboBuffer(),
byte_length=0,
byte_offset=0,
byte_stride=None,
extensions=None,
extras=None,
name='bufferViewAnimationFloatScalar',
target=None)
self.__gltf.buffer_views.append(
self.__asobo_buffer_views['bufferViewAnimationFloatScalar'])
self.__asobo_buffer_views[
'bufferViewAnimationFloatVec3'] = gltf2_io.BufferView(
buffer=gltf2_io_asobo_buffer.AsoboBuffer(),
byte_length=0,
byte_offset=0,
byte_stride=None,
extensions=None,
extras=None,
name='bufferViewAnimationFloatVec3',
target=None)
self.__gltf.buffer_views.append(
self.__asobo_buffer_views['bufferViewAnimationFloatVec3'])
self.__asobo_buffer_views[
'bufferViewAnimationFloatVec4'] = gltf2_io.BufferView(
buffer=gltf2_io_asobo_buffer.AsoboBuffer(),
byte_length=0,
byte_offset=0,
byte_stride=None,
extensions=None,
extras=None,
name='bufferViewAnimationFloatVec4',
target=None)
self.__gltf.buffer_views.append(
self.__asobo_buffer_views['bufferViewAnimationFloatVec4'])
self.__asobo_buffer_views['BufferViewVertexND'] = gltf2_io.BufferView(
buffer=gltf2_io_asobo_buffer.AsoboBuffer(),
byte_length=0,
byte_offset=0,
byte_stride=36,
extensions=None,
extras=None,
name='BufferViewVertexND',
target=34962)
self.__gltf.buffer_views.append(
self.__asobo_buffer_views['BufferViewVertexND'])
self.__asobo_buffer_views['BufferViewIndex'] = gltf2_io.BufferView(
buffer=gltf2_io_asobo_buffer.AsoboBuffer(),
byte_length=0,
byte_offset=0,
byte_stride=None,
extensions=None,
extras=None,
name='BufferViewIndex',
target=34963)
self.__gltf.buffer_views.append(
self.__asobo_buffer_views['BufferViewIndex'])
self.__asobo_buffer_views[
'BufferViewVertex4Blend'] = gltf2_io.BufferView(
buffer=gltf2_io_asobo_buffer.AsoboBuffer(),
byte_length=0,
byte_offset=0,
byte_stride=48,
extensions=None,
extras=None,
name='BufferViewVertex4Blend',
target=34962)
self.__gltf.buffer_views.append(
self.__asobo_buffer_views['BufferViewVertex4Blend'])
self.__asobo_buffer_views[
'BufferViewVertex1Blend'] = gltf2_io.BufferView(
buffer=gltf2_io_asobo_buffer.AsoboBuffer(),
byte_length=0,
byte_offset=0,
byte_stride=44,
extensions=None,
extras=None,
name='BufferViewVertex1Blend',
target=34962)
self.__gltf.buffer_views.append(
self.__asobo_buffer_views['BufferViewVertex1Blend'])