UV Mapping: texturing a 3d object

What is UV mapping and how does it work?

Summary

Published: Jan 21 2024 by mana vortex Last documented update: Jan 21 2024 by mana vortex

This page contains the theory of how to connect meshes (3d objects) with textures (which are 2d after all)

Wait, this isn't what I want!

• For a hands-on guide to UV mapping, check Adding decals -> Step 5: UV projection

• For import/export help, check Textures: Importing, editing, exporting

What is "UV mapping" and can I eat it?

This is the technical term for the process of mapping a flat texture on your three-dimensional object. The most hands-on example for this is Christmas chocolate:

Regardless of that, you can not eat it.

Where can I see them?

To look at an object's UV mapping, you'll have to fire up Blender (or a 3d editing software of your choice).

An object's UV maps are visible in the Data tab:

How do I edit the UV mapping?

To look at an object's UV mapping, you'll have to fire up Blender (or a 3d editing software of your choice).

Open the UV editing perspective, select a mesh, and switch to Edit Mode. If you select vertices in the viewport on the right, you can see their UV islands in the UV editor on the left:

You change the mapping by editing those UV islands. For a more hands-on guide of this, refer to Adding decals -> Step 5: UV projection