Triangle Normal Calculations

Member
Posts: 40
Joined: 2008.10
Post: #1
Hello all. I have been writing some planes and triangles equations for collision detection, and I was wondering if when calculating the normal of the triangle, do you have to make the normal a unit vector?
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Moderator
Posts: 1,560
Joined: 2003.10
Post: #2
It depends on how you're using the normal. It's often convenient to normalize your normals, but your algorithm might not require it.
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Member
Posts: 40
Joined: 2008.10
Post: #3
Yeah it seems my algorithms require it.
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