def __gather_gltf(exporter, export_settings):
scenes, animations = gltf2_blender_gather.gather_gltf2(export_settings)
if export_settings['gltf_draco_mesh_compression']:
gltf2_io_draco_compression_extension.compress_scene_primitives(
scenes, export_settings)
exporter.add_draco_extension()
for scene in scenes:
exporter.add_scene(scene)
for animation in animations:
exporter.add_animation(animation)
def __gather_gltf(exporter, export_settings):
active_scene_idx, scenes, animations = gltf2_blender_gather.gather_gltf2(
export_settings)
if export_settings['gltf_draco_mesh_compression']:
gltf2_io_draco_compression_extension.encode_scene_primitives(
scenes, export_settings)
exporter.add_draco_extension()
for idx, scene in enumerate(scenes):
exporter.add_scene(scene, idx == active_scene_idx)
for animation in animations:
exporter.add_animation(animation)
def __gather_gltf(exporter, export_settings):
active_scene_idx, scenes, animations = gltf2_blender_gather.gather_gltf2(export_settings)
unused_skins = export_settings['vtree'].get_unused_skins()
if export_settings['gltf_draco_mesh_compression']:
gltf2_io_draco_compression_extension.encode_scene_primitives(scenes, export_settings)
exporter.add_draco_extension()
export_user_extensions('gather_gltf_hook', export_settings, active_scene_idx, scenes, animations)
for idx, scene in enumerate(scenes):
exporter.add_scene(scene, idx==active_scene_idx)
for animation in animations:
exporter.add_animation(animation)
exporter.traverse_unused_skins(unused_skins)
def __gather_gltf(exporter, export_settings):
active_scene_idx, scenes, animations = gltf2_blender_gather.gather_gltf2(
export_settings)
plan = {
'active_scene_idx': active_scene_idx,
'scenes': scenes,
'animations': animations
}
export_user_extensions('gather_gltf_hook', export_settings, plan)
active_scene_idx, scenes, animations = plan['active_scene_idx'], plan[
'scenes'], plan['animations']
if export_settings['gltf_draco_mesh_compression']:
gltf2_io_draco_compression_extension.encode_scene_primitives(
scenes, export_settings)
exporter.add_draco_extension()
for idx, scene in enumerate(scenes):
exporter.add_scene(scene, idx == active_scene_idx)
for animation in animations:
exporter.add_animation(animation)
def __add_root_objects(exporter, export_settings):
scenes, animations = gltf2_blender_gather.gather_gltf2(export_settings)
for scene in scenes:
exporter.add_scene(scene)
for animation in animations:
exporter.add_animation(animation)
def export(blender_scene, selected, hubs_config, registered_hubs_components):
if bpy.data.filepath == '':
raise RuntimeError("Save project before exporting")
filepath = bpy.data.filepath.replace('.blend', '')
filename_ext = '.glb'
export_settings = {}
export_settings['timestamp'] = datetime.datetime.now()
export_settings['gltf_filepath'] = bpy.path.ensure_ext(
filepath, filename_ext)
if os.path.exists(export_settings['gltf_filepath']):
os.remove(export_settings['gltf_filepath'])
export_settings['gltf_filedirectory'] = os.path.dirname(
export_settings['gltf_filepath']) + '/'
export_settings['gltf_format'] = 'GLB'
export_settings['gltf_image_format'] = 'NAME'
export_settings['gltf_copyright'] = ''
export_settings['gltf_texcoords'] = True
export_settings['gltf_normals'] = True
export_settings['gltf_tangents'] = False
export_settings['gltf_draco_mesh_compression'] = False
export_settings['gltf_materials'] = True
export_settings['gltf_colors'] = True
export_settings['gltf_cameras'] = False
export_settings['gltf_selected'] = selected
export_settings['gltf_layers'] = True
export_settings['gltf_extras'] = False
export_settings['gltf_yup'] = True
export_settings['gltf_apply'] = False
export_settings['gltf_current_frame'] = False
export_settings['gltf_animations'] = False
export_settings['gltf_frame_range'] = False
export_settings['gltf_move_keyframes'] = False
export_settings['gltf_force_sampling'] = False
export_settings['gltf_skins'] = False
export_settings['gltf_all_vertex_influences'] = False
export_settings['gltf_frame_step'] = 1
export_settings['gltf_morph'] = False
export_settings['gltf_morph_normal'] = False
export_settings['gltf_morph_tangent'] = False
export_settings['gltf_lights'] = False
export_settings['gltf_displacement'] = False
export_settings['gltf_binary'] = bytearray()
export_settings['gltf_binaryfilename'] = os.path.splitext(
os.path.basename(bpy.path.ensure_ext(filepath,
filename_ext)))[0] + '.bin'
export_settings['hubs_config'] = hubs_config
export_settings['registered_hubs_components'] = registered_hubs_components
gltf2_blender_gather_nodes.__gather_extensions = patched_gather_extensions
gltf2_blender_gather_materials.__gather_extensions = patched_gather_extensions
# In most recent version this function will return active_scene
# as the first value for a total of 3 return values
scenes, _animations = gltf2_blender_gather.gather_gltf2(export_settings)
for gltf_scene in scenes:
gltf_scene.extensions = patched_gather_extensions(
blender_scene, export_settings)
exporter = GlTF2Exporter(export_settings['gltf_copyright'])
exporter.add_scene(scenes[0], True)
buffer = exporter.finalize_buffer(export_settings['gltf_filedirectory'],
is_glb=True)
exporter.finalize_images(export_settings['gltf_filedirectory'])
gltf_json = fix_json(exporter.glTF.to_dict())
extension_name = hubs_config["gltfExtensionName"]
if 'extensionsRequired' in gltf_json:
gltf_json['extensionsRequired'].remove(extension_name)
if not gltf_json['extensionsRequired']:
del gltf_json['extensionsRequired']
if 'extensionsUsed' not in gltf_json:
gltf_json['extensionsUsed'] = [extension_name]
elif extension_name not in gltf_json['extensionsUsed']:
gltf_json['extensionsUsed'].append(extension_name)
if 'extensions' not in gltf_json:
gltf_json['extensions'] = {}
gltf_json['extensions'][extension_name] = {
"version": hubs_config["gltfExtensionVersion"]
}
gltf2_io_export.save_gltf(gltf_json, export_settings,
gltf2_blender_json.BlenderJSONEncoder, buffer)
gltf2_blender_gather_nodes.__gather_extensions = original_gather_extensions
return export_settings['gltf_filepath']
def save(operator, context, export_settings):
"""
Starts the glTF 2.0 export and saves to content either to a .gltf or .glb file.
"""
print_console('INFO', 'Starting glTF 2.0 export')
bpy.context.window_manager.progress_begin(0, 100)
bpy.context.window_manager.progress_update(0)
#
prepare(export_settings)
#
glTF = Gltf(accessors=[],
animations=[],
asset=None,
buffers=[],
buffer_views=[],
cameras=[],
extensions={},
extensions_required=[],
extensions_used=[],
extras=None,
images=[],
materials=[],
meshes=[],
nodes=[],
samplers=[],
scene=-1,
scenes=[],
skins=[],
textures=[])
if export_settings['gltf_experimental']:
scenes, animations = gltf2_blender_gather.gather_gltf2(export_settings)
if not export_settings['gltf_copyright']:
export_settings['gltf_copyright'] = None
exporter = gltf2_blender_gltf2_exporter.GlTF2Exporter(
copyright=export_settings['gltf_copyright'])
for scene in scenes:
exporter.add_scene(scene)
for animation in animations:
exporter.add_animation(animation)
if export_settings['gltf_format'] == 'ASCII':
exporter.finalize_buffer(export_settings['gltf_filedirectory'],
export_settings['gltf_binaryfilename'])
else:
exporter.finalize_buffer(export_settings['gltf_filedirectory'])
exporter.finalize_images(export_settings['gltf_filedirectory'])
glTF = exporter.glTF
else:
generate_glTF(operator, context, export_settings, glTF)
#
# TODO: move to custom JSON encoder
def dict_strip(obj):
o = obj
if isinstance(obj, dict):
o = {}
for k, v in obj.items():
if v is None:
continue
elif isinstance(v, list) and len(v) == 0:
continue
o[k] = dict_strip(v)
elif isinstance(obj, list):
o = []
for v in obj:
o.append(dict_strip(v))
elif isinstance(obj, float):
# force floats to int, if they are integers (prevent INTEGER_WRITTEN_AS_FLOAT validator warnings)
if int(obj) == obj:
return int(obj)
return o
import sys
import traceback
try:
save_gltf(dict_strip(glTF.to_dict()), export_settings,
gltf2_blender_json.BlenderJSONEncoder)
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
#
finish(export_settings)
#
print_console('INFO', 'Finished glTF 2.0 export')
bpy.context.window_manager.progress_end()
print_newline()
return {'FINISHED'}
