//下面是画圆的程序，



//画线、画圆、画各种曲线其实都很简单，归根到底就是x、y的二元方程嘛



//对算法感兴趣的话建议去找本《计算机图形学》看看，不是卖关子哦。实在是几句话说不清除，呵呵



// ---------------------------------------------- //字节



void circleDot(unsigned char x,unsigned char y,char xx,char yy)//内部函数，对称法画圆的8个镜像点



{//对称法画圆的8个镜像点

-//The following is a drawcircle procedures,// drawing line, circle, drawing a variety of curve is actually very simple, in the final analysis is the x, y of the dual equation嘛//of the proposed algorithm interested to find this　computer graphics,　look, rather than hedge Oh. It is not clear a few words, huh, huh//----------------------------------------------// byte void circleDot (unsigned char x, unsigned char y, char xx, char yy)// internal function, Symmetry drawcircle mirror points of the 8 (//Symmetry drawcircle the 8 image points