We can "unwrap" a 3d model into a 2d space, then apply a texture to that 2d unwrapped object so that when we "rewrap" the object, the 3d object has the texture applied in the correct position. A really good concept video can be seen here:
https://www.youtube.com/watch?v=Y7M-B6xnaEM
phoebeli23
Why are textures mapped to 2D coordinates? Why can't they be mapped directly to 3D coordinates?
Staffrishiu
@phoebeli23 this is because typically, textures we use are 2D images. However, if we had a 3D volume as a texture, the coordinates could definitely be in 3D.
abhim00
Is there a correct way to come up with a texture. Suppose you are are a graphic artist, would you render a plain image and then a texture, and do the mapping described in class?
We can "unwrap" a 3d model into a 2d space, then apply a texture to that 2d unwrapped object so that when we "rewrap" the object, the 3d object has the texture applied in the correct position. A really good concept video can be seen here: https://www.youtube.com/watch?v=Y7M-B6xnaEM
Why are textures mapped to 2D coordinates? Why can't they be mapped directly to 3D coordinates?
@phoebeli23 this is because typically, textures we use are 2D images. However, if we had a 3D volume as a texture, the coordinates could definitely be in 3D.
Is there a correct way to come up with a texture. Suppose you are are a graphic artist, would you render a plain image and then a texture, and do the mapping described in class?