In order to display materials on surfaces of 3D models, flat projections are created in 2D space. A flat projection of a 3D model is called UV map, where the letters U and V represent the names of the 2D axes. For domed free-form surfaces, which can’t be displayed in 2D space without segmentation, a certain amount of deformation is accepted. This preserves the continuity of the surfaces in 2D space and ensures the seamless projection of materials. For 3D models with multiple material assignments, the UV maps can be edited per material. In addition to the UV mapping projection, simplified methods that are independent of the shape of the object are available. The materials can then be projected on the model surfaces based on a 2D plane, spherical, cubical or cylindrical shape.

Show all