Harman Patil (Editor)

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

    • References

    Polygon (computer graphics) Wikipedia
    (Text) CC BY-SA