geometries.py 文件源码

def __getitem__(self, index):
        "Returns the Point at the given index."
        if index >= 0 and index < self.point_count:
            x, y, z = c_double(), c_double(), c_double()
            capi.get_point(self.ptr, index, byref(x), byref(y), byref(z))
            dim = self.coord_dim
            if dim == 1:
                return (x.value,)
            elif dim == 2:
                return (x.value, y.value)
            elif dim == 3:
                return (x.value, y.value, z.value)
        else:
            raise OGRIndexError('index out of range: %s' % str(index))