对计算机图形学的编程实践，包括画直线、反走样直线、画圆、画椭圆、画矩形、画多边形、矩形填充、多边形填充、3D变换、光照、贴图等。由于精力有限，未对原码做任何注释。出于简化编程的考虑，许多地方指定了常数，未做通用处理-of computer graphics programming practice, including painting line, anti-aliasing straight Circle, painted oval, rectangular painting, drawing polygon, rectangle filling, polygon filling, 3D transformation, lighting, textures, etc.. Because of the limited energy, the original code did not make any notes. To simplify programming for consideration, in many places designated constant, declined to address GM