Wrapping (graphics)

In computer graphics, wrapping is the process of limiting a position to an area. A good example of wrapping is wallpaper, a single pattern repeated indefinitely over a wall. Wrapping is used in 3D computer graphics to repeat a texture over a polygon, eliminating the need for large textures or multiple polygons.

To wrap a position x to an area of width w, calculate the value ${\displaystyle x'\equiv x{\pmod {w}}}$.

For computational purposes the wrapped value x' of x can be expressed as

where ${\displaystyle x_{max}}$ is the highest value in the range, and ${\displaystyle x_{min}}$ is the lowest value in the range.

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