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Texture Coords Problem

Started by ciccio Jul 12, 2000 at 6:25 AM 1 replies 250+ views

Original Post

Jul 12, 2000 at 6:25 AM

Hi!I have a problem with texture coordinates: I must calculate u,v ,the tex coords needed by Direct3D, for a given point that lies on a polygon. I have texture coordinates equations but I don''t understand how to determine the texture space axes. The only things that I have are world coords and u,v of all polygon''s vertices and I would like to know u and v of a point on the polygon that doesn''t belong to that set of vertices. Thanks Zcode

Julio

Jul 12, 2000 at 10:26 AM

one easy way is to predifine them before runtime. (like loaded through a file or something) there are ways to figure out texture coords through the game loop, but this seems like it would take too much proceesor time. maybe I''m wrong.

JoeMont001@aol.com | www.polarisoft.n3.net

ciccio

Author

ciccio

Jul 13, 2000 at 3:03 AM

But..how can I predefine texture coordinates if the
problem is just that I don''t know hot to define them?
I can define them manually only for simple cases (ex: a square (0,0)(1,0)(0,1)(1,1)), whereas when I have arbitrary vertices of
an arbitrary polygon...-maybe I am wrong too but- I need a calculation in order to fill the u and v fields.
Zcode

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