Anti-aliasing line drawing algorithm based on symmetry

After a deep research in Bresenham algorithm and Wu anti-aliasing algorithm,an improved line-drawing and anti-aliasing method is proposed by improving them in a novel way,which is applied to embedded operation system.This method is based on the symmetry of the line,and it has been proved to be better than the existing algorithm.Finally,this method supports to draw multi-width and anti-aliasing line.