3dmesh 爆炸效果

mesh 爆炸效果def explode_mesh(mesh, explosion_scale0.4): if isinstance(mesh, trimesh.Scene): scene mesh elif isinstance(mesh, trimesh.Trimesh): print(Warning: Single mesh provided, cant create exploded view) scene trimesh.Scene(mesh) return scene else: print(fWarning: Unexpected mesh type: {type(mesh)}) scene mesh if len(scene.geometry) 1: print(Only one geometry found - nothing to explode) return scene print(f[EXPLODE_MESH] Starting mesh explosion with scale {explosion_scale}) print(f[EXPLODE_MESH] Processing {len(scene.geometry)} parts) exploded_scene trimesh.Scene() part_centers [] geometry_names [] for geometry_name, geometry in scene.geometry.items(): if hasattr(geometry, vertices): transform scene.graph[geometry_name][0] vertices_global trimesh.transformations.transform_points( geometry.vertices, transform ) center np.mean(vertices_global, axis0) part_centers.append(center) geometry_names.append(geometry_name) print(f[EXPLODE_MESH] Part {geometry_name}: center {center}) if not part_centers: print(No valid geometries with vertices found) return scene part_centers np.array(part_centers) global_center np.mean(part_centers, axis0) print(f[EXPLODE_MESH] Global center: {global_center}) for i, (geometry_name, geometry) in enumerate(scene.geometry.items()): if hasattr(geometry, vertices): if i len(part_centers): part_center part_centers[i] direction part_center - global_center direction_norm np.linalg.norm(direction) if direction_norm 1e-6: direction direction / direction_norm else: direction np.random.randn(3) direction direction / np.linalg.norm(direction) offset direction * explosion_scale else: offset np.zeros(3) original_transform scene.graph[geometry_name][0].copy() new_transform original_transform.copy() new_transform[:3, 3] new_transform[:3, 3] offset exploded_scene.add_geometry( geometry, transformnew_transform, geom_namegeometry_name ) print( f[EXPLODE_MESH] Part {geometry_name}: moved by f {np.linalg.norm(offset):.4f} ) print([EXPLODE_MESH] Mesh explosion complete) return exploded_scene