Coordinate mapping from the world axes to triplanes

[botbw]

Hi there, I would like to confirm the way of mapping the points in world axes (i.e. sampled_coordinates) to indices of triplanes without considering bilinear interpolation. (From my understanding it is (x, y, z) => round( (box_wrap * (x, y, z) + 1) / 2 * 256 ).)

I also want to know how the range of coordinates is determined in this method.

Thanks in advance.