3 ms·
Where are the permutation numbers derived from?
by J3L2404 17y ago
Where are the permutation numbers derived from?
- rohitarondekar 17y agoThey are generated randomly. Ken Perlin has described it in his book Texturing, Modeling A Procedural Approach. If I remember correctly the numbers have to be such that every direction should have an equal chance. Even distribution I think.
- J3L2404 17y agoI was thinking it would be more like the fast inverse square from Quake. If it's random, using the same code could be a problem, no?