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Message:

Help! Texture Mapping

Posted by Robert on January 05, 2001 at 9:03 PM

Okay, in going nuts, completly insane trying to get this done and i was hoping somone here could help me out.

Im building a small 3D world. All the basic components are there, all my shapes are in x,y,z coord format. I rotate them, i translate them, i place em in the world where they need to be, and so on. I also project them, so every 3D shape i have is reduced to X,Y form. Each face (im using all quadrilaterals, maybe i shoulda used triangles but too late now) is stored in arrays Xpix[4], Ypix[4] which holds X,Y values on the screen for each face.

Now then, i pass these into gOffscreen.fillPolygon(Xpix,Ypix,4) which paints one quadrilateral at a time nice and neatly on the screen. I have been busting my brain trying to replace this Polygon fill with a simple nice effiecient texture mapping procedure. Ive looked all over the net but i cant for the life of me find a decent example where they show how i can project a 2D texture to my projected 2D polygon.

I can read in all the pixel data nicely using pixelGrabber, and i have the onscreen projected X,Y coords for each facet, and what i need is some way of texturing those facets. If anyone can help me in any way at all please please please post here or email me at "le_bob_83@yahoo.com".

Thanks in advance

-Robert