Polygon

From DmWiki

A polygon is a geometrical object constructed with vertices and edges connecting the vertices. The most well known polygon is a triangle, which has three vertices and three edges. It should be noted that any set of vertices conntected through a set of edges is called a polygon. It need not be closed, which means that the last vertex is not required to connect to the first. Edges may intersect. Besides open and closed poylgons they are classified in two categories : convex and concave. In rendering triangles are most commonly used, because they have various properties that make them easy to handle. In raster graphics polygons may be filled with pixels using the scanline algorithm.