计算机图形学基础课程设计

DDA画直线 void CChildView::ddaline(int x0,int y0,int x1,int y1,int color) { double dx, dy, x, y, m; dx = x1 - x0; dy = y1 - y0; if (sym) count=0; if (dx == 0){ for (int i = min(y0,y1), j = abs(y0-y1); j >=0; j-- ) draw_point (x0, i+j, color);