1 Reply Latest reply on Sep 11, 2009 12:12 PM by g.u.y

    frustum clipping u,v problem

    g.u.y

      Hi all,

      I'm building a 3d portal engine and i have problem with the u,v texture cord clipping.

      I am using this formula for the u,v calculation (where s is the intersection point distance from the plane and the inside vector):
      u = u1 - s*(u2-u1)
      v = v1 - s*(v2-v1)

      I'm posting 2 example links of my engine, one with the frustum portal clipping:
      http://alturl.com/hur3

      and one without the clipping:
      http://alturl.com/cof9

      you can move with direction keys and "a", "d" for walking left and right.

      can someone tell me how to do the u,v clipping right?

      Guy

        • 1. Re: frustum clipping u,v problem
          g.u.y Level 1

          OK, i solved the problem!

           

          I find out that when I'm using objects with quad faces or more,
          the texture is bending after the frustum clipping.
          But when I'm using models with triangles only,
          the texture looks fine after the clipping.

           

          Thanks anyway,
          Guy