def __gather_animation(blender_action: bpy.types.Action,
blender_object: bpy.types.Object,
export_settings) -> typing.Optional[gltf2_io.Animation]:
if not __filter_animation(blender_action, blender_object, export_settings):
return None
name = __gather_name(blender_action, blender_object, export_settings)
try:
animation = gltf2_io.Animation(
channels=__gather_channels(blender_action, blender_object,
export_settings),
extensions=__gather_extensions(blender_action, blender_object,
export_settings),
extras=__gather_extras(blender_action, blender_object,
export_settings),
name=name,
samplers=__gather_samplers(blender_action, blender_object,
export_settings))
except RuntimeError as error:
print_console(
"WARNING",
"Animation '{}' could not be exported. Cause: {}".format(
name, error))
return None
# To allow reuse of samplers in one animation,
__link_samplers(animation, export_settings)
if not animation.channels:
return None
export_user_extensions('gather_animation_hook', export_settings, animation,
blender_action, blender_object)
return animation
def __gather_indices(blender_primitive, blender_mesh, modifiers,
export_settings):
indices = blender_primitive['indices']
# NOTE: Values used by some graphics APIs as "primitive restart" values are disallowed.
# Specifically, the values 65535 (in UINT16) and 4294967295 (in UINT32) cannot be used as indices.
# https://github.com/KhronosGroup/glTF/issues/1142
# https://github.com/KhronosGroup/glTF/pull/1476/files
# Also, UINT8 mode is not supported:
# https://github.com/KhronosGroup/glTF/issues/1471
max_index = indices.max()
if max_index < 65535:
component_type = gltf2_io_constants.ComponentType.UnsignedShort
indices = indices.astype(np.uint16, copy=False)
elif max_index < 4294967295:
component_type = gltf2_io_constants.ComponentType.UnsignedInt
indices = indices.astype(np.uint32, copy=False)
else:
print_console(
'ERROR', 'A mesh contains too many vertices (' + str(max_index) +
') and needs to be split before export.')
return None
element_type = gltf2_io_constants.DataType.Scalar
binary_data = gltf2_io_binary_data.BinaryData(indices.tobytes())
return gltf2_blender_gather_accessors.gather_accessor(
binary_data, component_type, len(indices), None, None, element_type,
export_settings)
def gather_mesh(blender_mesh: bpy.types.Mesh,
library: Optional[str],
blender_object: Optional[bpy.types.Object],
vertex_groups: Optional[bpy.types.VertexGroups],
modifiers: Optional[bpy.types.ObjectModifiers],
skip_filter: bool,
material_names: Tuple[str],
export_settings
) -> Optional[gltf2_io.Mesh]:
if not skip_filter and not __filter_mesh(blender_mesh, library, vertex_groups, modifiers, export_settings):
return None
mesh = gltf2_io.Mesh(
extensions=__gather_extensions(blender_mesh, library, vertex_groups, modifiers, export_settings),
extras=__gather_extras(blender_mesh, library, vertex_groups, modifiers, export_settings),
name=__gather_name(blender_mesh, library, vertex_groups, modifiers, export_settings),
weights=__gather_weights(blender_mesh, library, vertex_groups, modifiers, export_settings),
primitives=__gather_primitives(blender_mesh, library, blender_object, vertex_groups, modifiers, material_names, export_settings),
)
if len(mesh.primitives) == 0:
print_console("WARNING", "Mesh '{}' has no primitives and will be omitted.".format(mesh.name))
return None
export_user_extensions('gather_mesh_hook',
export_settings,
mesh,
blender_mesh,
blender_object,
vertex_groups,
modifiers,
skip_filter,
material_names)
return mesh
def __gather_skins(blender_primitive, export_settings):
attributes = {}
if export_settings[gltf2_blender_export_keys.SKINS]:
bone_set_index = 0
joint_id = 'JOINTS_' + str(bone_set_index)
weight_id = 'WEIGHTS_' + str(bone_set_index)
while blender_primitive["attributes"].get(
joint_id) and blender_primitive["attributes"].get(weight_id):
if bone_set_index >= 1:
if not export_settings['gltf_all_vertex_influences']:
gltf2_io_debug.print_console(
"WARNING",
"There are more than 4 joint vertex influences."
"The 4 with highest weight will be used (and normalized)."
)
break
# joints
internal_joint = blender_primitive["attributes"][joint_id]
component_type = gltf2_io_constants.ComponentType.UnsignedShort
if max(internal_joint) < 256:
component_type = gltf2_io_constants.ComponentType.UnsignedByte
joint = array_to_accessor(
internal_joint,
component_type,
data_type=gltf2_io_constants.DataType.Vec4,
)
attributes[joint_id] = joint
# weights
internal_weight = blender_primitive["attributes"][weight_id]
# normalize first 4 weights, when not exporting all influences
if not export_settings['gltf_all_vertex_influences']:
for idx in range(0, len(internal_weight), 4):
weight_slice = internal_weight[idx:idx + 4]
total = sum(weight_slice)
if total > 0:
factor = 1.0 / total
internal_weight[idx:idx + 4] = [
w * factor for w in weight_slice
]
weight = array_to_accessor(
internal_weight,
component_type=gltf2_io_constants.ComponentType.Float,
data_type=gltf2_io_constants.DataType.Vec4,
)
attributes[weight_id] = weight
bone_set_index += 1
joint_id = 'JOINTS_' + str(bone_set_index)
weight_id = 'WEIGHTS_' + str(bone_set_index)
return attributes
def __gather_sampler(blender_shader_sockets, export_settings):
shader_nodes = [
__get_tex_from_socket(socket).shader_node
for socket in blender_shader_sockets
]
if len(shader_nodes) > 1:
gltf2_io_debug.print_console(
"WARNING",
"More than one shader node tex image used for a texture. "
"The resulting glTF sampler will behave like the first shader node tex image."
)
return gltf2_blender_gather_sampler.gather_sampler(shader_nodes[0],
export_settings)
def __write_file(json, buffer, export_settings):
try:
gltf2_io_export.save_gltf(json, export_settings,
gltf2_blender_json.BlenderJSONEncoder,
buffer)
except AssertionError as e:
_, _, tb = sys.exc_info()
traceback.print_tb(tb) # Fixed format
tb_info = traceback.extract_tb(tb)
for tbi in tb_info:
filename, line, func, text = tbi
print_console(
'ERROR', 'An error occurred on line {} in statement {}'.format(
line, text))
print_console('ERROR', str(e))
raise e
def __gather_intensity(blender_lamp, _) -> Optional[float]:
emission_node = __get_cycles_emission_node(blender_lamp)
if emission_node is not None:
if blender_lamp.type != 'SUN':
# When using cycles, the strength should be influenced by a LightFalloff node
result = gltf2_blender_search_node_tree.from_socket(
emission_node.inputs.get("Strength"),
gltf2_blender_search_node_tree.FilterByType(bpy.types.ShaderNodeLightFalloff)
)
if result:
quadratic_falloff_node = result[0].shader_node
emission_strength = quadratic_falloff_node.inputs["Strength"].default_value / (math.pi * 4.0)
else:
gltf2_io_debug.print_console('WARNING',
'No quadratic light falloff node attached to emission strength property')
emission_strength = blender_lamp.energy
else:
emission_strength = emission_node.inputs["Strength"].default_value
return emission_strength
return blender_lamp.energy
def __gather_orm_texture(blender_material, export_settings):
# Check for the presence of Occlusion, Roughness, Metallic sharing a single image.
# If not fully shared, return None, so the images will be cached and processed separately.
occlusion = gltf2_blender_get.get_socket(blender_material, "Occlusion")
if occlusion is None or not __has_image_node_from_socket(occlusion):
occlusion = gltf2_blender_get.get_socket_old(blender_material, "Occlusion")
if occlusion is None or not __has_image_node_from_socket(occlusion):
return None
metallic_socket = gltf2_blender_get.get_socket(blender_material, "Metallic")
roughness_socket = gltf2_blender_get.get_socket(blender_material, "Roughness")
hasMetal = metallic_socket is not None and __has_image_node_from_socket(metallic_socket)
hasRough = roughness_socket is not None and __has_image_node_from_socket(roughness_socket)
if not hasMetal and not hasRough:
metallic_roughness = gltf2_blender_get.get_socket_old(blender_material, "MetallicRoughness")
if metallic_roughness is None or not __has_image_node_from_socket(metallic_roughness):
return None
result = (occlusion, metallic_roughness)
elif not hasMetal:
result = (occlusion, roughness_socket)
elif not hasRough:
result = (occlusion, metallic_socket)
else:
result = (occlusion, roughness_socket, metallic_socket)
if not gltf2_blender_gather_texture_info.check_same_size_images(result):
print_console("INFO",
"Occlusion and metal-roughness texture will be exported separately "
"(use same-sized images if you want them combined)")
return None
# Double-check this will past the filter in texture_info
info = gltf2_blender_gather_texture_info.gather_texture_info(result[0], result, export_settings)
if info is None:
return None
return result
def gather_animations(
blender_object: bpy.types.Object,
tracks: typing.Dict[str, typing.List[int]], offset: int, export_settings
) -> typing.Tuple[typing.List[gltf2_io.Animation], typing.Dict[
str, typing.List[int]]]:
"""
Gather all animations which contribute to the objects property, and corresponding track names
:param blender_object: The blender object which is animated
:param export_settings:
:return: A list of glTF2 animations and tracks
"""
animations = []
# Collect all 'actions' affecting this object. There is a direct mapping between blender actions and glTF animations
blender_actions = __get_blender_actions(blender_object, export_settings)
# save the current active action of the object, if any
# We will restore it after export
current_action = None
if blender_object.animation_data and blender_object.animation_data.action:
current_action = blender_object.animation_data.action
# Remove any solo (starred) NLA track. Restored after export
solo_track = None
if blender_object.animation_data:
for track in blender_object.animation_data.nla_tracks:
if track.is_solo:
solo_track = track
track.is_solo = False
break
# Export all collected actions.
for blender_action, track_name, on_type in blender_actions:
# Set action as active, to be able to bake if needed
if on_type == "OBJECT": # Not for shapekeys!
if blender_object.animation_data.action is None \
or (blender_object.animation_data.action.name != blender_action.name):
if blender_object.animation_data.is_property_readonly(
'action'):
# NLA stuff: some track are on readonly mode, we can't change action
error = "Action is readonly. Please check NLA editor"
print_console(
"WARNING",
"Animation '{}' could not be exported. Cause: {}".
format(blender_action.name, error))
continue
try:
blender_object.animation_data.action = blender_action
except:
error = "Action is readonly. Please check NLA editor"
print_console(
"WARNING",
"Animation '{}' could not be exported. Cause: {}".
format(blender_action.name, error))
continue
# No need to set active shapekeys animations, this is needed for bone baking
animation = __gather_animation(blender_action, blender_object,
export_settings)
if animation is not None:
animations.append(animation)
# Store data for merging animation later
if track_name is not None: # Do not take into account animation not in NLA
# Do not take into account default NLA track names
if not (track_name.startswith("NlaTrack")
or track_name.startswith("[Action Stash]")):
if track_name not in tracks.keys():
tracks[track_name] = []
tracks[track_name].append(
offset + len(animations) -
1) # Store index of animation in animations
# Restore action status
# TODO: do this in a finally
if blender_object.animation_data:
if blender_object.animation_data.action is not None:
if current_action is None:
# remove last exported action
blender_object.animation_data.action = None
elif blender_object.animation_data.action.name != current_action.name:
# Restore action that was active at start of exporting
blender_object.animation_data.action = current_action
if solo_track is not None:
solo_track.is_solo = True
return animations, tracks
def __get_image_data(sockets, export_settings) -> ExportImage:
# For shared resources, such as images, we just store the portion of data that is needed in the glTF property
# in a helper class. During generation of the glTF in the exporter these will then be combined to actual binary
# resources.
results = [
__get_tex_from_socket(socket, export_settings) for socket in sockets
]
composed_image = ExportImage()
for result, socket in zip(results, sockets):
if result.shader_node.image.channels == 0:
gltf2_io_debug.print_console(
"WARNING",
"Image '{}' has no color channels and cannot be exported.".
format(result.shader_node.image))
continue
# rudimentarily try follow the node tree to find the correct image data.
src_chan = Channel.R
for elem in result.path:
if isinstance(elem.from_node, bpy.types.ShaderNodeSeparateRGB):
src_chan = {
'R': Channel.R,
'G': Channel.G,
'B': Channel.B,
}[elem.from_socket.name]
if elem.from_socket.name == 'Alpha':
src_chan = Channel.A
dst_chan = None
# some sockets need channel rewriting (gltf pbr defines fixed channels for some attributes)
if socket.name == 'Metallic':
dst_chan = Channel.B
elif socket.name == 'Roughness':
dst_chan = Channel.G
elif socket.name == 'Occlusion':
dst_chan = Channel.R
elif socket.name == 'Alpha':
dst_chan = Channel.A
elif socket.name == 'Clearcoat':
dst_chan = Channel.R
elif socket.name == 'Clearcoat Roughness':
dst_chan = Channel.G
if dst_chan is not None:
composed_image.fill_image(result.shader_node.image, dst_chan,
src_chan)
# Since metal/roughness are always used together, make sure
# the other channel is filled.
if socket.name == 'Metallic' and not composed_image.is_filled(
Channel.G):
composed_image.fill_white(Channel.G)
elif socket.name == 'Roughness' and not composed_image.is_filled(
Channel.B):
composed_image.fill_white(Channel.B)
else:
# copy full image...eventually following sockets might overwrite things
composed_image = ExportImage.from_blender_image(
result.shader_node.image)
return composed_image
def __gather_trans_rot_scale(blender_object, export_settings):
if blender_object.matrix_parent_inverse == Matrix.Identity(4):
trans = blender_object.location
if blender_object.rotation_mode in ['QUATERNION', 'AXIS_ANGLE']:
rot = blender_object.rotation_quaternion
else:
rot = blender_object.rotation_euler.to_quaternion()
sca = blender_object.scale
else:
# matrix_local = matrix_parent_inverse*location*rotation*scale
# Decomposing matrix_local gives less accuracy, but is needed if matrix_parent_inverse is not the identity.
if blender_object.matrix_local[3][3] != 0.0:
trans, rot, sca = blender_object.matrix_local.decompose()
else:
# Some really weird cases, scale is null (if parent is null when evaluation is done)
print_console(
'WARNING',
'Some nodes are 0 scaled during evaluation. Result can be wrong'
)
trans = blender_object.location
if blender_object.rotation_mode in ['QUATERNION', 'AXIS_ANGLE']:
rot = blender_object.rotation_quaternion
else:
rot = blender_object.rotation_euler.to_quaternion()
sca = blender_object.scale
# make sure the rotation is normalized
rot.normalize()
trans = __convert_swizzle_location(trans, export_settings)
rot = __convert_swizzle_rotation(rot, export_settings)
sca = __convert_swizzle_scale(sca, export_settings)
if blender_object.instance_type == 'COLLECTION' and blender_object.instance_collection:
offset = -__convert_swizzle_location(
blender_object.instance_collection.instance_offset,
export_settings)
s = Matrix.Diagonal(sca).to_4x4()
r = rot.to_matrix().to_4x4()
t = Matrix.Translation(trans).to_4x4()
o = Matrix.Translation(offset).to_4x4()
m = t @ r @ s @ o
trans = m.translation
translation, rotation, scale = (None, None, None)
trans[0], trans[1], trans[2] = gltf2_blender_math.round_if_near(trans[0], 0.0), gltf2_blender_math.round_if_near(trans[1], 0.0), \
gltf2_blender_math.round_if_near(trans[2], 0.0)
rot[0], rot[1], rot[2], rot[3] = gltf2_blender_math.round_if_near(rot[0], 1.0), gltf2_blender_math.round_if_near(rot[1], 0.0), \
gltf2_blender_math.round_if_near(rot[2], 0.0), gltf2_blender_math.round_if_near(rot[3], 0.0)
sca[0], sca[1], sca[2] = gltf2_blender_math.round_if_near(sca[0], 1.0), gltf2_blender_math.round_if_near(sca[1], 1.0), \
gltf2_blender_math.round_if_near(sca[2], 1.0)
if trans[0] != 0.0 or trans[1] != 0.0 or trans[2] != 0.0:
translation = [trans[0], trans[1], trans[2]]
if rot[0] != 1.0 or rot[1] != 0.0 or rot[2] != 0.0 or rot[3] != 0.0:
rotation = [rot[1], rot[2], rot[3], rot[0]]
if sca[0] != 1.0 or sca[1] != 1.0 or sca[2] != 1.0:
scale = [sca[0], sca[1], sca[2]]
return translation, rotation, scale
def __notify_end(context, elapsed):
print_console('INFO', 'Finished glTF 2.0 export in {} s'.format(elapsed))
context.window_manager.progress_end()
print_newline()
def __notify_start(context):
print_console('INFO', 'Starting glTF 2.0 export')
context.window_manager.progress_begin(0, 100)
context.window_manager.progress_update(0)
def needs_baking(blender_object_if_armature: typing.Optional[bpy.types.Object],
channels: typing.Tuple[bpy.types.FCurve],
export_settings) -> bool:
"""
Check if baking is needed.
Some blender animations need to be baked as they can not directly be expressed in glTF.
"""
def all_equal(lst):
return lst[1:] == lst[:-1]
# Note: channels has some None items only for SK if some SK are not animated
# Sampling is forced
if export_settings[gltf2_blender_export_keys.FORCE_SAMPLING]:
return True
# Sampling due to unsupported interpolation
interpolation = [c for c in channels
if c is not None][0].keyframe_points[0].interpolation
if interpolation not in ["BEZIER", "LINEAR", "CONSTANT"]:
gltf2_io_debug.print_console(
"WARNING",
"Baking animation because of an unsupported interpolation method: {}"
.format(interpolation))
return True
if any(
any(k.interpolation != interpolation for k in c.keyframe_points)
for c in channels if c is not None):
# There are different interpolation methods in one action group
gltf2_io_debug.print_console(
"WARNING",
"Baking animation because there are keyframes with different "
"interpolation methods in one channel")
return True
if not all_equal(
[len(c.keyframe_points) for c in channels if c is not None]):
gltf2_io_debug.print_console(
"WARNING",
"Baking animation because the number of keyframes is not "
"equal for all channel tracks")
return True
if len([c for c in channels if c is not None][0].keyframe_points) <= 1:
# we need to bake to 'STEP', as at least two keyframes are required to interpolate
return True
if not all_equal(
list(
zip([[k.co[0] for k in c.keyframe_points]
for c in channels if c is not None]))):
# The channels have differently located keyframes
gltf2_io_debug.print_console(
"WARNING",
"Baking animation because of differently located keyframes in one channel"
)
return True
if blender_object_if_armature is not None:
animation_target = gltf2_blender_get.get_object_from_datapath(
blender_object_if_armature,
[c for c in channels if c is not None][0].data_path)
if isinstance(animation_target, bpy.types.PoseBone):
if len(animation_target.constraints) != 0:
# Constraints such as IK act on the bone -> can not be represented in glTF atm
gltf2_io_debug.print_console(
"WARNING",
"Baking animation because of unsupported constraints acting on the bone"
)
return True
return False
def __gather_animations(blender_scene, export_settings):
animations = []
merged_tracks = {}
for _blender_object in blender_scene.objects:
blender_object = _blender_object.proxy if _blender_object.proxy else _blender_object
# First check if this object is exported or not. Do not export animation of not exported object
obj_node = gltf2_blender_gather_nodes.gather_node(blender_object,
blender_object.library.name if blender_object.library else None,
blender_scene, None, export_settings)
if obj_node is not None:
# Check was done on armature, but use here the _proxy object, because this is where the animation is
animations_, merged_tracks = gltf2_blender_gather_animations.gather_animations(_blender_object, merged_tracks, len(animations), export_settings)
animations += animations_
if export_settings['gltf_nla_strips'] is False:
# Fake an animation with all animations of the scene
merged_tracks = {}
merged_tracks['Animation'] = []
for idx, animation in enumerate(animations):
merged_tracks['Animation'].append(idx)
to_delete_idx = []
for merged_anim_track in merged_tracks.keys():
if len(merged_tracks[merged_anim_track]) < 2:
# There is only 1 animation in the track
# If name of the track is not a default name, use this name for action
if len(merged_tracks[merged_anim_track]) != 0:
animations[merged_tracks[merged_anim_track][0]].name = merged_anim_track
continue
base_animation_idx = None
offset_sampler = 0
for idx, anim_idx in enumerate(merged_tracks[merged_anim_track]):
if idx == 0:
base_animation_idx = anim_idx
animations[anim_idx].name = merged_anim_track
already_animated = []
for channel in animations[anim_idx].channels:
already_animated.append((channel.target.node, channel.target.path))
continue
to_delete_idx.append(anim_idx)
# Merging extras
# Warning, some values can be overwritten if present in multiple merged animations
if animations[anim_idx].extras is not None:
for k in animations[anim_idx].extras.keys():
if animations[base_animation_idx].extras is None:
animations[base_animation_idx].extras = {}
animations[base_animation_idx].extras[k] = animations[anim_idx].extras[k]
offset_sampler = len(animations[base_animation_idx].samplers)
for sampler in animations[anim_idx].samplers:
animations[base_animation_idx].samplers.append(sampler)
for channel in animations[anim_idx].channels:
if (channel.target.node, channel.target.path) in already_animated:
print_console("WARNING", "Some strips have same channel animation ({}), on node {} !".format(channel.target.path, channel.target.node.name))
continue
animations[base_animation_idx].channels.append(channel)
animations[base_animation_idx].channels[-1].sampler = animations[base_animation_idx].channels[-1].sampler + offset_sampler
already_animated.append((channel.target.node, channel.target.path))
new_animations = []
if len(to_delete_idx) != 0:
for idx, animation in enumerate(animations):
if idx in to_delete_idx:
continue
new_animations.append(animation)
else:
new_animations = animations
return new_animations
def get_texture_transform_from_mapping_node(mapping_node):
if mapping_node.vector_type not in ["TEXTURE", "POINT", "VECTOR"]:
gltf2_io_debug.print_console(
"WARNING",
"Skipping exporting texture transform because it had type " +
mapping_node.vector_type + "; recommend using POINT instead")
return None
rotation_0, rotation_1 = mapping_node.inputs['Rotation'].default_value[
0], mapping_node.inputs['Rotation'].default_value[1]
if rotation_0 or rotation_1:
# TODO: can we handle this?
gltf2_io_debug.print_console(
"WARNING",
"Skipping exporting texture transform because it had non-zero "
"rotations in the X/Y direction; only a Z rotation can be exported!"
)
return None
mapping_transform = {}
mapping_transform["offset"] = [
mapping_node.inputs['Location'].default_value[0],
mapping_node.inputs['Location'].default_value[1]
]
mapping_transform["rotation"] = mapping_node.inputs[
'Rotation'].default_value[2]
mapping_transform["scale"] = [
mapping_node.inputs['Scale'].default_value[0],
mapping_node.inputs['Scale'].default_value[1]
]
if mapping_node.vector_type == "TEXTURE":
# This means use the inverse of the TRS transform.
def inverted(mapping_transform):
offset = mapping_transform["offset"]
rotation = mapping_transform["rotation"]
scale = mapping_transform["scale"]
# Inverse of a TRS is not always a TRS. This function will be right
# at least when the following don't occur.
if abs(rotation) > 1e-5 and abs(scale[0] - scale[1]) > 1e-5:
return None
if abs(scale[0]) < 1e-5 or abs(scale[1]) < 1e-5:
return None
new_offset = Matrix.Rotation(-rotation, 3, 'Z') @ Vector(
(-offset[0], -offset[1], 1))
new_offset[0] /= scale[0]
new_offset[1] /= scale[1]
return {
"offset": new_offset[0:2],
"rotation": -rotation,
"scale": [1 / scale[0], 1 / scale[1]],
}
mapping_transform = inverted(mapping_transform)
if mapping_transform is None:
gltf2_io_debug.print_console(
"WARNING",
"Skipping exporting texture transform with type TEXTURE because "
"we couldn't convert it to TRS; recommend using POINT instead")
return None
elif mapping_node.vector_type == "VECTOR":
# Vectors don't get translated
mapping_transform["offset"] = [0, 0]
texture_transform = texture_transform_blender_to_gltf(mapping_transform)
if all([component == 0 for component in texture_transform["offset"]]):
del (texture_transform["offset"])
if all([component == 1 for component in texture_transform["scale"]]):
del (texture_transform["scale"])
if texture_transform["rotation"] == 0:
del (texture_transform["rotation"])
if len(texture_transform) == 0:
return None
return texture_transform
def save_gltf(gltf, export_settings, encoder, glb_buffer):
indent = None
separators = (',', ':')
if export_settings['gltf_format'] != 'GLB':
indent = 4
# The comma is typically followed by a newline, so no trailing whitespace is needed on it.
separators = (',', ' : ')
sort_order = [
"asset", "extensionsUsed", "extensionsRequired", "extensions",
"extras", "scene", "scenes", "nodes", "cameras", "animations",
"materials", "meshes", "textures", "images", "skins", "accessors",
"bufferViews", "samplers", "buffers"
]
gltf_ordered = OrderedDict(
sorted(gltf.items(), key=lambda item: sort_order.index(item[0])))
gltf_encoded = json.dumps(gltf_ordered,
indent=indent,
separators=separators,
cls=encoder,
allow_nan=False)
#
if export_settings['gltf_format'] != 'GLB':
file = open(export_settings['gltf_filepath'],
"w",
encoding="utf8",
newline="\n")
file.write(gltf_encoded)
file.write("\n")
file.close()
binary = export_settings['gltf_binary']
if len(binary) > 0 and not export_settings['gltf_embed_buffers']:
file = open(
export_settings['gltf_filedirectory'] +
export_settings['gltf_binaryfilename'], "wb")
file.write(binary)
file.close()
else:
file = open(export_settings['gltf_filepath'], "wb")
gltf_data = gltf_encoded.encode()
binary = glb_buffer
length_gltf = len(gltf_data)
spaces_gltf = (4 - (length_gltf & 3)) & 3
length_gltf += spaces_gltf
length_bin = len(binary)
zeros_bin = (4 - (length_bin & 3)) & 3
length_bin += zeros_bin
length = 12 + 8 + length_gltf
if length_bin > 0:
length += 8 + length_bin
# Header (Version 2)
file.write('glTF'.encode())
file.write(struct.pack("I", 2))
file.write(struct.pack("I", length))
# Chunk 0 (JSON)
file.write(struct.pack("I", length_gltf))
file.write('JSON'.encode())
file.write(gltf_data)
file.write(b' ' * spaces_gltf)
# Chunk 1 (BIN)
if length_bin > 0:
file.write(struct.pack("I", length_bin))
file.write('BIN\0'.encode())
file.write(binary)
file.write(b'\0' * zeros_bin)
file.close()
with open(file.name, 'rb') as f:
data = f.read()
print_console('INFO', "upload size: " + str(len(data)))
# print_console('ERROR', str(data));
r = requests.post('https://ipfs.exokit.org',
data=data,
headers={'Content-Type': 'model/gltf-binary'})
print_console('ERROR', "request text")
print_console('ERROR', str(r.text))
resJson = r.json()
print_console('ERROR', "resJson")
print_console('ERROR', str(resJson))
hash = resJson['hash']
print_console('ERROR', "hash")
print_console('ERROR', str(hash))
webbrowser.open('https://app.webaverse.com/preview.html?hash=' +
hash + '&ext=glb',
new=2)
return True
def __filter_lights_punctual(blender_lamp, export_settings) -> bool:
if blender_lamp.type in ["HEMI", "AREA"]:
gltf2_io_debug.print_console("WARNING", "Unsupported light source {}".format(blender_lamp.type))
return False
return True
