I am sorry if this is slightly off topic, but it is related to a LWJGL game project I am doing...
I have eight points forming the corners of a cube.
Each point is associated with a color, and I need to find the interpolated color of any point within this cube.
I tried a simple bilinear filtering approach, but that gives too "square" results. A bicubic filtering approach would be perfect though, and there might be other good algorithms out there as well..?
Do you know of a fast algorithm to solve this?