diff options
Diffstat (limited to 'io_scene_gltf2/blender/exp/gltf2_blender_extract.py')
| -rwxr-xr-x | io_scene_gltf2/blender/exp/gltf2_blender_extract.py | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_extract.py b/io_scene_gltf2/blender/exp/gltf2_blender_extract.py index d81bd706..98e2ac19 100755 --- a/io_scene_gltf2/blender/exp/gltf2_blender_extract.py +++ b/io_scene_gltf2/blender/exp/gltf2_blender_extract.py @@ -82,7 +82,14 @@ def extract_primitives(blender_mesh, uuid_for_skined_data, blender_vertex_groups locs, morph_locs = __get_positions(blender_mesh, key_blocks, armature, blender_object, export_settings) if skin: - vert_bones, num_joint_sets = __get_bone_data(blender_mesh, skin, blender_vertex_groups) + vert_bones, num_joint_sets, need_neutral_bone = __get_bone_data(blender_mesh, skin, blender_vertex_groups) + if need_neutral_bone is True: + # Need to create a fake joint at root of armature + # In order to assign not assigned vertices to it + # But for now, this is not yet possible, we need to wait the armature node is created + # Just store this, to be used later + armature_uuid = export_settings['vtree'].nodes[uuid_for_skined_data].armature + export_settings['vtree'].nodes[armature_uuid].need_neutral_bone = True # In Blender there is both per-vert data, like position, and also per-loop # (loop=corner-of-poly) data, like normals or UVs. glTF only has per-vert @@ -535,6 +542,9 @@ def __get_colors(blender_mesh, color_i): def __get_bone_data(blender_mesh, skin, blender_vertex_groups): + + need_neutral_bone = False + joint_name_to_index = {joint.name: index for index, joint in enumerate(skin.joints)} group_to_joint = [joint_name_to_index.get(g.name) for g in blender_vertex_groups] @@ -557,7 +567,10 @@ def __get_bone_data(blender_mesh, skin, blender_vertex_groups): continue bones.append((joint, weight)) bones.sort(key=lambda x: x[1], reverse=True) - if not bones: bones = ((0, 1.0),) # HACK for verts with zero weight (#308) + if not bones: + # Is not assign to any bone + bones = ((len(skin.joints), 1.0),) # Assign to a joint that will be created later + need_neutral_bone = True vert_bones.append(bones) if len(bones) > max_num_influences: max_num_influences = len(bones) @@ -565,7 +578,7 @@ def __get_bone_data(blender_mesh, skin, blender_vertex_groups): # How many joint sets do we need? 1 set = 4 influences num_joint_sets = (max_num_influences + 3) // 4 - return vert_bones, num_joint_sets + return vert_bones, num_joint_sets, need_neutral_bone def __zup2yup(array): |