Polygon (computer graphics)
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Polygons are used in computer graphics to compose images that are three-dimensional in appearance. Usually (but not always) triangular, polygons arise when an object's surface is modeled, vertices are selected, and the object is rendered in a wire frame model. This is quicker to display than a shaded model; thus the polygons are a stage in computer animation. The polygon count refers to the number of polygons being rendered per frame.
Competing methods for rendering polygons that avoid seams
- point
- *floating point
- *Fixed-point
- *polygon
- *because of rounding, every scanline has its own direction in space and may show its front or back side to the viewer.
- Fraction (mathematics)
- *Bresenham's line algorithm
- *polygons have to be split into triangles
- *the whole triangle shows the same side to the viewer
- *the point numbers from the Transform and lighting stage have to converted to Fraction (mathematics)
- Barycentric coordinates (mathematics)
- *used in raytracing
See also
- Polygon, for general polygon information
- Polygon mesh, for polygon object representation
- Polygon modeling
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