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I'm using this algorithm to find texture coordinates on a sphere: Wikipedia UV Coordinates
I get the famous seam due to the wrong interpolation, but I also get odd distortions on certain points on the sphere. A picture follows where you can see like five starshaped distortions.
What could cause this?
Took me some time, but I finally found the problem. In the wiki entry is written that the unit vector is needed. I basically forgot to normalize the vector before the calculation!
