Let's paint the faces of our cube. 3D computer models in Unity are defined by meshes—a set of Vector3 points connected with edges, forming triangular-shaped facets. When building a model in Blender, you can unwrap a mesh into a flattened 2D configuration to define the mapping of texture pixels to the corresponding areas on the mesh surface (UV coordinates). The result is called a UV Texture image.
We will create a UV Texture image for our cube, as follows:
- Go into Edit Mode using the Interaction Mode selector in the bottom Header bar.
- Select all (press the A key on the keyboard twice) to make sure that all the faces are selected.
- In the left Tool Shelf panel, select the Shading/UVs tab.
- Under UV Mapping click on Unwrap
