View Full Version : textures coordinates generation

07-14-2001, 12:30 PM
can someone explain what is the meaning of
generating texture coordinates ?
till now i just have texture mapped some quads, so the coordinates are written in a file that i load, with the vectrices...

when is it needed to calculate them ?


07-14-2001, 04:09 PM
Well, if you were texture mapping a complex object you would obviously need to generate some complex coords, far more complex than just a quad which you can just do by hand. Therefor you will need an algorithm...

07-15-2001, 11:01 AM
ok ! i've got the point,
so, if in your scene you've got some complex objects and some non-complex ones, is there a way to have a function that calculate both the complex and the easy objects, so everything is calculated ?
or maybe the non complex objects coords are
still entered by hand ?


07-15-2001, 12:53 PM
for 99% of objects/meshes the texture coordinates will have to be calculated by the person that makes the models (with eg a 3d modelling program) exceptions where gl can calculate the coordinates are for 'effects' like reflection mapping etc