GLSurfacePlotItem.py 文件源码

def generateFaces(self):
        cols = self._z.shape[1]-1
        rows = self._z.shape[0]-1
        faces = np.empty((cols*rows*2, 3), dtype=np.uint)
        rowtemplate1 = np.arange(cols).reshape(cols, 1) + np.array([[0, 1, cols+1]])
        rowtemplate2 = np.arange(cols).reshape(cols, 1) + np.array([[cols+1, 1, cols+2]])
        for row in range(rows):
            start = row * cols * 2 
            faces[start:start+cols] = rowtemplate1 + row * (cols+1)
            faces[start+cols:start+(cols*2)] = rowtemplate2 + row * (cols+1)
        self._faces = faces