SurfaceFollow.py 文件源码

def triangulate(ob='empty', proxy=False):
    '''Requires a mesh. Returns an index array for viewing
    the coordinates as triangles. Store this!!! rather than recalculating
    every time. !!!Could use for_each_get with the mesh and polygons if
    all the faces have 3 points!!! Could also write bmesh to mesh and use
    foreach_get'''    
    if ob == 'empty':
        ob = bpy.context.object
    if proxy:
        mods = True
    else:
        mods = False
    proxy = ob.to_mesh(bpy.context.scene, mods, 'PREVIEW')
    obm = get_bmesh(proxy)        
    bmesh.ops.triangulate(obm, faces=obm.faces)
    obm.to_mesh(proxy)        
    count = len(proxy.polygons)    
    tri_idx = np.zeros(count * 3, dtype=np.int64)        
    proxy.polygons.foreach_get('vertices', tri_idx)        
    bpy.data.meshes.remove(proxy)
    obm.free()
    return tri_idx.reshape(count, 3)