int main()
{
unsigned d = 0, c = 0, color = 0, lines[473][2];
srand(*((unsigned*)0x46c));
setmode(0x13); /* set to color graphics mode, clearing screen */
bresenham_circle(160, 100, 75, 15);
for (d = 0; d < 64000l; d++)
{
if(*((char far*)0xa0000000l + d) == 15)
lines[c][1] = d / 320, lines[c++][0] = d % 320;
}
while (*((char far*)0x41a) == *((char far*)0x41c))
{
bresenham_circle(160, 100,
(++color & 127) + 80, (color / 5 ) & 255);
d = rand() % 465 + 4;
c = (d + 3) % 472;
bresenham_line(lines[d][0], lines[d][1],
lines[c][0], lines[c][1], color & 255);
}
setmode(0x03); /* set to color text mode, clearing screen */
getch();
return 0;
}
// Function to draw two concentric circles
void concentric_circles(void)
{
/* Clears buffers to preset values */
glClear(GL_COLOR_BUFFER_BIT);
int radius1 = 100;
bresenham_circle(radius1);
}
void main(void)
{
int i=0;
randomize();
setmode(0x13);
while(!kbhit())
{
bresenham_line(random(SCREEN_WIDTH), random(SCREEN_HEIGTH),
random(SCREEN_WIDTH), random(SCREEN_HEIGTH), i = ++i % 64);
bresenham_circle(random(SCREEN_WIDTH), random(SCREEN_HEIGTH),
random(50), i = ++i % 64);
}
getch();
setmode(0x03); /* set to color text mode, clearing screen */
}