Part
Learn about Part components in Pixyz scenes, including their properties, how to retrieve geometry information, and methods for duplication.
阅读时间2 分钟最后更新于 9 个月前
Parts are components that contain geometry information, such as information related to CAD, meshes, lines, and UVs. "Part occurrences" is a term often used to refer to occurrences containing part components.
Part properties:
Property | Type | Description |
|---|---|---|
| Id | Ident | A unique unsigned int identifier. |
| BRepShapeInitial | Entity | Original CAD geometry data before tessellation. |
| BRepShapeModified | Entity | |
| TessellatedShape | Entity | Mesh information. |
| Transform | Matrix4 | Local transform matrix of this part component, storing local position, rotation and scale information. |
提示
Use scene.getPartOccurrences(root) to retrieve all part occurrences under the occurrence.
rootUse definitions to retrieve geometry information from a Part component. This example shows how to retrieve the position of vertices of a mesh (Mesh) through its definition (MeshDefinition):
part = pxz.scene.getComponent(occurrence, pxz.scene.ComponentType.Part)# "part == 0" means that the occurrence doesn't have a part component.if (part > 0){ mesh = pxz.scene.getPartMesh(part) # "mesh == 0" means that no mesh is attached to the part. if (mesh > 0) { # Queries geometry information from meshes. meshDef = pxz.polygonal.getMeshDefinition(mesh) vertices = meshDef.vertices # … }}
To duplicate a part, use the core.cloneEntity method. This snippet shows how to create a new occurrence that shares the same part component as its input:
# Gets the components to be duplicated.partComponent = pxz.scene.getComponent(occ, pxz.scene.ComponentType.Part)# Creates an occurrence.lod = pxz.scene.createOccurrence("_LOD1")# Sets the part component of the cloned occurrence as the part component of the new occurrence.pxz.scene.setComponentOccurrence(pxz.core.cloneEntity(part), lod)pxz.scene.setParent(lod, occ)