I would like to know why many instructor talk about 0 to 1 space in UV mapping or related areas of UV unwrapping.

Are 0 to 1 values part of a Boolean, or some programming stuff?


It is actually a coordinate system in percentage of image size.

A coordinate [0,0] corresponds the lower left corner, and [1,1] is the upper right corner (depending the the render engine/software.

It is made in such way that unwrapping is actually image size independent, so that if at a later time, you decide to use a larger image or an image with different dimensions the UV map still works and adapts (with distortions) to the new image format.

It is not a Boolean value nor is it limited to the 0~1 range, it is a float and can take on any value like -3.2, or 158.56.

The image will tile infinitely in X and Y axis repeating at every 1 unit, so for values bellow 0 or above 1 it will tile the image so that coordinate [2,2] will show the same part of the image as [1,1].


  • $\begingroup$ Per image? for example every single Uv space has this limitation , is like an array? or bidimentional ? ok... I think is not complicated and that is a concept , any trick or consideration about to know? $\endgroup$ – Reifus Rufus Nov 7 '16 at 3:13
  • $\begingroup$ Yes, its a percentage per image, but it is not limited to 0-1, it is a float value, and can take on values larger 1, i will simply repeat the image infinitely. Edited and detailed answer above. $\endgroup$ – Duarte Farrajota Ramos Nov 7 '16 at 3:29
  • $\begingroup$ ok , I think is not more to tell , for cg artist is more than enough to take this few concepts. thanks $\endgroup$ – Reifus Rufus Nov 7 '16 at 3:32

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.