Editing Polygon (computer graphics) (section)

==Competing methods for rendering polygons that avoid seams==
* [[Decimal separator|Point]]
**[[Floating_point|Floating Point]]
**[[Fixed-point arithmetic|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 [[triangle]]s
**The whole triangle shows the same side to the viewer
**The [[Decimal separator|point]] numbers from the [[Transform and lighting]] stage have to converted to [[Fraction (mathematics)]]
*[[Barycentric coordinates (mathematics)]]
**Used in [[Ray tracing (graphics)|raytracing]]