MidpointLine
来源：互联网 发布：移动网络解锁 编辑：程序博客网 时间：2024/06/05 15:19
#include < graphics.h > #include < math.h > void MidpointLine(int x0, int y0, int x1, int y1);int main(void) { int gdriver = DETECT, gmode, errorcode; int bkcolor, midx, midy; initgraph( & gdriver, &gmode, ""); setcolor(RED); MidpointLine(0, 0, 639, 479); getch(); closegraph(); return 0;}void MidpointLine(int x0, int y0, int x1, int y1) { int color; int a, b, delta1, delta2, d, x, y; a = y0 - y1; b = x1 - x0; d = a + a + b; delta1 = a + a; delta2 = a + a + b + b; x = x0; y = y0; color = getcolor(); putpixel(x, y, color); while (x < x1) { if (d < 0) { x++; y++; d += delta2; } else { x++; d += delta1; } putpixel(x, y, color); }} 0 0
