Question

求计算机图形学中画线和圆程序的源代码？

C语言，MATLABE,VC,VB的都行

Answer 1

C环境下包含Graphics.h

void cb_line(int x1,int y1,int x2,int y2) /*draw a line*/
{
int dx,dy,n,k,i,f; /* k stands for the slope of line*/
int x,y;
dx=abs(x2-x1);
dy=abs(y2-y1);
n=dx+dy;
if(x2> =x1)
{
k=y2> =y1?1:4;
x=x1;
y=y1;
}
else
{
k=y2> =y1?2:4;
x=x1;
y=y1;
}

for(i=0,f=0;i <n;i++)
if(f> =0)
switch(k)
{
case 1:putpixel(x++,y,3);f-=dy;break;
case 2:putpixel(x,y++,3);f-=dx;break;
case 3:putpixel(x--,y,3);f-=dy;break;
case 4:putpixel(x,y--,3);f-=dx;break;
}
else
switch(k)
{
case 1:putpixel(x,y++,3);f+=dx;break;
case 2:putpixel(x--,y,3);f+=dy;break;
case 3:putpixel(x,y--,3);f+=dx;break;
case 4:putpixel(x++,y,3);f+=dy;break;
}
}
这个是C的代码
如果要java的代码就去网上看韩顺平讲的java坦克大战的视频 里面画坦克和炮弹的都有。