public void init()
{
colors = new colr[256];
standardPalette(ref colors);
zPosAdder = angle = amplitude_angle = horizontal_angle = vertical_angle = 0;
starField = create_starfield(20, 200, 36, 2500, 2, 3);
}
private void draw_starfield(starfield sfield)
{
for (int star_count = 0; star_count < sfield.num_stars; star_count++)
{
star s = sfield.star_list[star_count];
for (double p = 0; p < s.num_points; p++)
{
double x = (theWidth >> 1) + theWidth * (s.x + s.radius * 2 * Math.Sin(p * pi2 / s.num_points)) * 1 / s.z;
double y = (theHeight >> 1) - theHeight * (s.y + s.radius * Math.Cos(p * pi2 / s.num_points)) * 1 / s.z;
// kludgey color fader lol
double cc = 1 - Math.Abs(s.z / (sfield.max_z * .8));
if (cc < 0)
{
cc = 0;
}
if (cc > 1)
{
cc = 1;
}
int c = (int)(300 * cc);
if (c > 255)
{
c = 255;
}
Color co = Color.FromArgb(colors[c].b, colors[c].r, colors[c].g);
if (s.z > (int)(sfield.max_z * .6))
{
co = Color.FromArgb(colors[c].b >> 1, c, c);
}
updateIt((int)x, (int)y, co);
updateIt((int)x + 1, (int)y, co);
updateIt((int)x, (int)y + 1, co);
}
}
}
private starfield create_starfield(int num_stars, double radius, double num_points, double max_z, double min_z, double z_speed)
{
zPosAdder = max_z / num_stars;
double zPos = max_z;
starfield s = new starfield();
s.star_list = new star[num_stars];
for (int i = 0; i < num_stars; i++)
{
s.star_list[i].radius = radius;
s.star_list[i].num_points = num_points;
s.star_list[i].z = min_z + ((max_z - min_z) / num_stars) * i + 1;
zPos -= zPosAdder;
}
s.max_z = max_z;
s.min_z = min_z;
s.z_speed = z_speed;
s.num_stars = num_stars;
return(s);
}
private void process_starfield(starfield sfield)
{
for (int star_count = 0; star_count < sfield.num_stars; star_count++)
{
star s = sfield.star_list[star_count];
s.z -= sfield.z_speed;
if (s.z <= sfield.min_z)
{
s.z = sfield.max_z;
s.x = (100 + 300 * Math.Cos(amplitude_angle)) * Math.Sin(angle) + 300 * Math.Sin(horizontal_angle);
}
s.y = (100 + 300 * Math.Sin(amplitude_angle)) * Math.Cos(angle) + 300 * Math.Sin(vertical_angle);
sfield.star_list[star_count] = s;
}
angle += 0.0001;
amplitude_angle += .000086;
horizontal_angle += .0003;
vertical_angle += 0.000043;
}
