Attention
This function is available in C++ and Python only.
OELinearInterpolate
template<class GridType>
inline GridType OELinearInterpolate(const OEFixedGrid<GridType>& grid,
float x, float y, float z,
const GridType& outside_grid_val)
Returns the tri-linear interpolation of the value at (x, y, z)
inside the grid. If the point falls outside the grid,
outside_grid_val is returned instead.