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normal interpolation

Started by Eitsch Feb 16, 2007 at 7:29 AM 0 replies 1.2k views

Original Post

Feb 16, 2007 at 7:29 AM

i have to interpolate the normal on interesection point of a triangle. i got points of the triangle p0,p1,p2 and corresponding normals n0,n1,n2 and the point on the triangle p and the corresponding normal n unfortunately i don't have the Barycentric Coordinates of this points (i could calculate them but for performance reasons another solution is appreciated) what ideas do you have? thanks+

TheAdmiral

Feb 16, 2007 at 8:58 AM

Conversion to barycentrics is almost computationally trivial and any other method would be doing exactly the same thing in disguise. I suggest you go ahead and make the conversion. I'll give you £10 for each millisecond this adds to your frame rendering time [wink].

Admiral

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