Hemicube (computer graphics)
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- See also Hemicube (geometry)
Three-dimensional (3D) computer graphics |
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Fundamentals |
Primary uses |
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Related topics |
In 3D computer graphics rendering, a hemicube is one way to represent a 180° view from a surface or point in space.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Hemicube_Unfold.png/320px-Hemicube_Unfold.png)
Unfolding a hemicube
Shape[]
Although the name implies any half of a cube, a hemicube is usually a cube cut through a plane parallel to one of its faces. Therefore, it consists of one square face, one diamond shape face, two 2:1 aspect ratio rectangles, and two 1:2 aspect ratio rectangles totaling six sides.
Uses[]
The hemicube may be used in the Radiosity algorithm or other Light Transport algorithms in order to determine the amount of light arriving at a particular point on a surface.
In some cases, a hemicube may be used in environment mapping or reflection mapping.
Categories:
- 3D computer graphics