terrain.py 文件源码

def getTrianglesCoordinates(self):
        """
        A method to retrieve triplet of coordinates representing the triangles
        in lon,lat,height.
        """
        triangles = []
        self._computeVerticesCoordinates()
        indices = iter(self.indices)
        for i in xrange(0, len(self.indices) - 1, 3):
            vi1 = next(indices)
            vi2 = next(indices)
            vi3 = next(indices)
            triangle = (
                (self._longs[vi1],
                 self._lats[vi1],
                 self._heights[vi1]),
                (self._longs[vi2],
                 self._lats[vi2],
                 self._heights[vi2]),
                (self._longs[vi3],
                 self._lats[vi3],
                 self._heights[vi3])
            )
            triangles.append(triangle)
        if len(list(indices)) > 0:
            raise Exception('Corrupted tile')
        return triangles