public SS_Blackhole(int seed, int size)
{
Seed = seed;
Size = size;
Sprite = new SS_Texture(Size, Size, Color.clear);
SS_Random random = new SS_Random(Seed);
float radius = Size * 0.75f;
float atmosphereThickness = Size * 0.125f;
for (int y = 0; y < Size; y++)
{
for (int x = 0; x < Size; x++)
{
//float dist = Vector2.Distance(new Vector2(x, y), new Vector2(sprite.Center.x, sprite.Center.y));
int dist = SS_Point.Distance(new SS_Point(x, y), Sprite.Center);
if (dist <= (radius / 2))
{
Sprite.SetPixel(x, y, Color.black);
}
// Create "glow"
Color currentPixel = Sprite.GetPixel(x, y);
Color atmosphereColor = Color.black;
if (currentPixel == Color.clear)
{
atmosphereColor.a = 1;
//float distToEdge = Vector2.Distance(new Vector2(x, y), new Vector2(sprite.Center.x, sprite.Center.y));
int distToEdge = SS_Point.Distance(new SS_Point(x, y), Sprite.Center);
if (distToEdge < (radius / 2) + atmosphereThickness &&
distToEdge > (radius / 2))
{
float dist2 = dist - (radius / 2);
atmosphereColor.a = (atmosphereThickness - dist2) / atmosphereThickness;;
Sprite.SetPixel(x, y, atmosphereColor);
}
}
}
}
// Calculate the number of light points around the even horizon based on the square root of the size halfed.
int lightSpecCount = (int)(Mathf.Sqrt(Size) / 2) * Size;
// Create specs of light around event horizon
for (int i = 0; i < lightSpecCount; i++)
{
int a = random.Range(0, 359);
int dist = (short)random.Range(radius * 0.25f, radius * 0.65f);
int x = Sprite.Center.x + (int)(Mathf.Cos(a * Mathf.Deg2Rad) * dist);
int y = Sprite.Center.y + (int)(Mathf.Sin(a * Mathf.Deg2Rad) * dist);
SS_Point p = new SS_Point(x, y);
int distToCenter = SS_Point.Distance(p, Sprite.Center);
float v = 1 - (distToCenter / radius);
Color c = new Color(v, v, v);
Sprite.SetPixel(x, y, c);
}
SS_Drawing.Swirl(Sprite, Sprite.Width / 2, Sprite.Height / 2, Sprite.Width / 2, 5f);
for (int y = 0; y < Size; y++)
{
for (int x = 0; x < Size; x++)
{
float dist = Vector2.Distance(new Vector2(x, y), new Vector2(Sprite.Center.x, Sprite.Center.y));
if (dist > (radius * 0.25f))
{
Color c = Sprite.GetPixel(x, y);
c.a = 1 - (dist / (Size / 2));
Sprite.SetPixel(x, y, c);
}
}
}
SS_Drawing.Ellipse(Sprite, Sprite.Center.x, Sprite.Center.y, (int)(radius * 0.25), (int)(radius * 0.25), 32, Color.white);
}
