pfSCS and normals

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Javier Abadia Miranda (abadia++at++sgonyx.ita.es)
Tue, 14 Apr 1998 14:25:26 +0000

Hello:

How do pfSCS (scaling) affect normals ?

I have been doing some tests and I have found that Normals suffer
the same transformation than Vertices. This leads to incorrect
illumination when using a non-uniform scaling matrix.

Is there a way to apply one scaling matrix to vertices and
another to normals ?

Any suggestions to solve this inconvenience?

Perhaps manual rescaling (i.e. multiplying each vertex
by a Matrix, and its Normal by another) during load phase?

I want to speed object loading up, because I am doing dynamic
database management.

Thanks!

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