triangle normal vector

lakibuk · 2000-10-13T10:48:03

i build a small landscape with direct3d triangles. now i need the normal vectors for the triangles d3dvertex-objects. how can i calculate them ? sorry if this is in the tutorials,but i didnt find it.

Graphics and GPU Programming Programming

Started by lakibuk October 08, 2000 04:46 PM

10 comments, last by lakibuk 23 years, 7 months ago

Gladiator

127

October 10, 2000 01:54 PM

Witchy... I mean A.Jey

Double post?

something''s wrong here...

-------------------------------
I'll screw up whoever screws around with the gamedev forum!

..-=gLaDiAtOr=-..

WhatEver

125

October 13, 2000 10:48 AM

quote:
This is why counter-clockwise triangles are culled in D3D and clockwise triangles are culled in OGL.

FYI - You can change the direction of culling with this function in OpenGL: glFrontFace(GL_CCW); or glFrontFace(GL_CW);

In my game I use GL_CCW. It seems to work with all the 3d file formats that I have written code for.