Create sv faces from half-edge list. Current method doesn't check for duplicates, but Blender seems to filter them anyhow.
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@ -49,14 +49,87 @@ def model_to_shadow_mesh(model: Model, shadow_geometry : ShadowGeometry):
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# As is the case with normal geometry processing,
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# these will contain flattened lists
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vertex_positions = [convert_vector_space(position) for position in shadow_geometry.positions]
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edges = shadow_geometry.edges
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# This is all we have to do for vertices, other attributes are done per-loop
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# Vertices
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blender_mesh.vertices.add(len(vertex_positions))
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blender_mesh.vertices.foreach_set("co", [component for vertex_position in vertex_positions for component in vertex_position])
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blender_mesh.edges.add(len(edges))
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blender_mesh.edges.foreach_set("vertices", [index for edge in edges for index in (edge[0],edges[edge[1]][0])])
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def faces_from_half_edges(half_edges : List[Tuple[int,int,int,int]]) -> List[List[int]]:
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faces = []
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visited_edges = [False] * len(half_edges)
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for i in range(len(half_edges)):
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if visited_edges[i]:
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continue
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curr_edge = half_edges[i]
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curr_index = curr_edge[0]
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starting_index = curr_index
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face_length = 0
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face_temp = [0] * 5
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while True:
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if face_length + 1> len(face_temp):
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face_temp.append(curr_index)
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else:
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face_temp[face_length] = curr_index
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face_length += 1
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curr_edge = half_edges[curr_edge[1]]
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curr_index = curr_edge[0]
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if (curr_index == starting_index):
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break
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#print(f"Added a face of length: {face_length}")
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faces.append(face_temp[0:face_length])
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return faces
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polygons = faces_from_half_edges(shadow_geometry.edges)
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# LOOPS
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flat_indices = [index for polygon in polygons for index in polygon]
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blender_mesh.loops.add(len(flat_indices))
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# Position indices
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blender_mesh.loops.foreach_set("vertex_index", flat_indices)
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# POLYGONS/FACES
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blender_mesh.polygons.add(len(polygons))
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# Indices of starting loop for each polygon
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polygon_loop_start_indices = [0] * len(polygons)
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current_polygon_start_index = 0
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# Number of loops in this polygon. Polygon i will use
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# loops from polygon_loop_start_indices[i] to
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# polygon_loop_start_indices[i] + polygon_loop_totals[i]
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polygon_loop_totals = [0] * len(polygons)
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for i,polygon in enumerate(polygons):
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polygon_loop_start_indices[i] = current_polygon_start_index
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current_polygon_length = len(polygon)
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current_polygon_start_index += current_polygon_length
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polygon_loop_totals[i] = current_polygon_length
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blender_mesh.polygons.foreach_set("loop_start", polygon_loop_start_indices)
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blender_mesh.polygons.foreach_set("loop_total", polygon_loop_totals)
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blender_mesh.validate(clean_customdata=False)
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blender_mesh.update()
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#sv_name = model.name if model.name.startswith("sv_") else "sv_" + model.name
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blender_mesh_object = bpy.data.objects.new(model.name, blender_mesh)
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@ -163,25 +236,24 @@ def model_to_mesh(model: Model, scene: Scene, materials_map : Dict[str, bpy.type
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# POLYGONS/FACES
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blender_mesh.polygons.add(len(polygons))
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# Indices of starting loop for each polygon
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polygon_loop_start_indices = []
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polygon_loop_start_indices = [0] * len(polygons)
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current_polygon_start_index = 0
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# Number of loops in this polygon. Polygon i will use
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# loops from polygon_loop_start_indices[i] to
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# polygon_loop_start_indices[i] + polygon_loop_totals[i]
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polygon_loop_totals = []
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polygon_loop_totals = [0] * len(polygons)
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for polygon in polygons:
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polygon_loop_start_indices.append(current_polygon_start_index)
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for i,polygon in enumerate(polygons):
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polygon_loop_start_indices[i] = current_polygon_start_index
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current_polygon_length = len(polygon)
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current_polygon_start_index += current_polygon_length
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polygon_loop_totals.append(current_polygon_length)
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polygon_loop_totals[i] = current_polygon_length
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blender_mesh.polygons.foreach_set("loop_start", polygon_loop_start_indices)
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blender_mesh.polygons.foreach_set("loop_total", polygon_loop_totals)
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@ -44,10 +44,9 @@ def extract_models(scene: Scene, materials_map : Dict[str, bpy.types.Material])
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new_obj = bpy.data.objects.new(model.name, None)
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new_obj.empty_display_size = 1
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new_obj.empty_display_type = 'PLAIN_AXES'
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new_obj.name = model.name
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model_map[model.name] = new_obj
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new_obj.name = model.name
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if model.parent:
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new_obj.parent = model_map[model.parent]
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