dda生成直线.txt

计算机图形学课程设计,简单图形生成演示.希望对别人有用

dda_line (xa, ya, xb, yb, c)

int xa, ya, xb, yb, c;

{

float delta_x, delta_y, x, y;

int dx, dy, steps, k;

dx=xb-xa;

dy=yb-ya;

if (abs(dx)>abs(dy)) steps=abs(dx);

else steps=abs (dy);

delta_x=(float)dx / (float)steps;

delta_y=(float)dy / (float)steps;

x=xa;

y=ya;

set_pixel(x, y, c);

for (k=1; k<=steps; k++)

{

x+=delta_x;

y+=delta_y;

set_pixel(x, y, c);

}

   }