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add vertex deduplication

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This commit is contained in:
SleepKiller 2019-11-20 15:10:44 +13:00
parent aa18f5c2b7
commit cfba9e85ce
1 changed files with 34 additions and 3 deletions
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37
addons/io_scene_swbf_msh/msh_model_gather.py
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@ -87,7 +87,8 @@ def create_mesh_geometry(mesh: bpy.types.Mesh) -> List[GeometrySegment]:
material_count = max(len(mesh.materials), 1)
segments: List[GeometrySegment] = [GeometrySegment() for i in range(material_count)]
vertex_remap: List[Dict[Tuple(int, int), int]] = [dict() for i in range(material_count)]
vertex_cache: List[Dict[Tuple[float], int]] = [dict() for i in range(material_count)]
vertex_remap: List[Dict[Tuple[int, int], int]] = [dict() for i in range(material_count)]
polygons: List[Set[int]] = [set() for i in range(material_count)]
if mesh.vertex_colors.active is not None:
@ -100,13 +101,43 @@ def create_mesh_geometry(mesh: bpy.types.Mesh) -> List[GeometrySegment]:
def add_vertex(material_index: int, vertex_index: int, loop_index: int) -> int:
nonlocal segments, vertex_remap
vertex_cache_miss_index = -1
segment = segments[material_index]
cache = vertex_cache[material_index]
remap = vertex_remap[material_index]
if (vertex_index, loop_index) in remap:
return remap[(vertex_index, loop_index)]
def get_cache_vertex(vertex_index: int, loop_index: int):
yield mesh.vertices[vertex_index].co.x
yield mesh.vertices[vertex_index].co.y
yield mesh.vertices[vertex_index].co.z
if mesh.has_custom_normals:
yield mesh.loops[loop_index].normal.x
yield mesh.loops[loop_index].normal.y
yield mesh.loops[loop_index].normal.z
else:
yield mesh.vertices[vertex_index].normal.x
yield mesh.vertices[vertex_index].normal.y
yield mesh.vertices[vertex_index].normal.z
if mesh.uv_layers.active is not None:
yield mesh.uv_layers.active.data[loop_index].uv.x
yield mesh.uv_layers.active.data[loop_index].uv.y
if segment.colors is not None:
for v in mesh.vertex_colors.active.data[loop_index]:
yield v
vertex_cache_entry = tuple(get_cache_vertex(vertex_index, loop_index))
cached_vertex_index = cache.get(vertex_cache_entry, vertex_cache_miss_index)
if cached_vertex_index != vertex_cache_miss_index:
remap[(vertex_index, loop_index)] = cached_vertex_index
return cached_vertex_index
new_index: int = len(segment.positions)
cache[vertex_cache_entry] = new_index
remap[(vertex_index, loop_index)] = new_index
segment.positions.append(convert_vector_space(mesh.vertices[vertex_index].co))