reference_surface.py 文件源码

def move_vertex(self,vert_idx,new_pos):
        """
        this fn is used to manipulate the surface boundary (coordinate system)
        new_pos is in uv-space coords
        if we move one vertex of the surface we need to find
        the tranformation from old quadrangle to new quardangle
        and apply that transformation to our marker uv-coords
        """
        before = marker_corners_norm
        after = before.copy()
        after[vert_idx] = new_pos
        transform = cv2.getPerspectiveTransform(after,before)
        for m in self.markers.values():
            m.uv_coords = cv2.perspectiveTransform(m.uv_coords,transform)