public static Vector2 Area(ref UMT.MersenneTwister _rand, MTRandom.Normalization n, float t)
{
float x, y;
x = y = 0;
switch (n)
{
case MTRandom.Normalization.STDNORMAL:
x = (float)NormalDistribution.Normalize(_rand.NextSingle(true), t);
y = (float)NormalDistribution.Normalize(_rand.NextSingle(true), t);
break;
case MTRandom.Normalization.POWERLAW:
x = (float)PowerLaw.Normalize(_rand.NextSingle(true), t, 0, 1);
y = (float)PowerLaw.Normalize(_rand.NextSingle(true), t, 0, 1);
break;
default:
x = _rand.NextSingle(true);
y = _rand.NextSingle(true);
break;
}
// Move to -1, 1 space as for CIRCLE and SPHERE
return(new Vector2((2 * x - 1), (2 * y - 1)));
}
public static Vector3 Surface(ref UMT.MersenneTwister _rand, MTRandom.Normalization n, float t)
{
Vector3 pos = new Vector3();
switch (n)
{
case MTRandom.Normalization.STDNORMAL:
pos = GetPointOnCubeSurface(
(float)NormalDistribution.Normalize(_rand.NextSingle(true), t),
(float)NormalDistribution.Normalize(_rand.NextSingle(true), t),
_rand.Next(5));
break;
case MTRandom.Normalization.POWERLAW:
pos = GetPointOnCubeSurface(
(float)PowerLaw.Normalize(_rand.NextSingle(true), t, 0, 1),
(float)PowerLaw.Normalize(_rand.NextSingle(true), t, 0, 1),
_rand.Next(5));
break;
default:
pos = GetPointOnCubeSurface(_rand.NextSingle(true), _rand.NextSingle(true), _rand.Next(6));
break;
}
// Move to -1, 1 space as for CIRCLE and SPHERE
return(new Vector3((2 * pos.x) - 1, (2 * pos.y) - 1, (2 * pos.z) - 1));
}
public static Vector2 Circle(ref UMT.MersenneTwister _rand, MTRandom.Normalization n, float t)
{
float r;
switch (n)
{
case MTRandom.Normalization.STDNORMAL:
r = MTRandom.ScaleFloatToRange((float)NormalDistribution.Normalize(_rand.NextSingle(true), t), 0, Int32.MaxValue, 0, 1);
break;
case MTRandom.Normalization.POWERLAW:
r = (float)PowerLaw.Normalize(_rand.NextSingle(true), t, 0, Int32.MaxValue);
break;
default:
r = (float)_rand.Next();
break;
}
float _2pi = (float)Math.PI * 2;
float a = MTRandom.ScaleFloatToRange(r, 0, _2pi, 0, Int32.MaxValue);
return(new Vector2((float)Math.Cos(a), (float)Math.Sin(a)));
}
public static Vector2 Disk(ref UMT.MersenneTwister _rand, MTRandom.Normalization n, float temp)
{
double t, theta;
switch (n)
{
case MTRandom.Normalization.STDNORMAL:
t = NormalDistribution.Normalize(_rand.NextSingle(true), temp);
theta = NormalDistribution.Normalize(_rand.NextSingle(true), temp) * 2 * Math.PI;
break;
case MTRandom.Normalization.POWERLAW:
t = PowerLaw.Normalize(_rand.NextSingle(true), temp, 0, 1);
theta = PowerLaw.Normalize(_rand.NextSingle(true), temp, 0, 1) * 2 * Math.PI;
break;
default:
t = (float)_rand.NextSingle(true);
theta = _rand.NextSingle(false) * 2 * Math.PI;
break;
}
return(new Vector2((float)(Math.Sqrt(t) * Math.Cos(theta)), (float)(Math.Sqrt(t) * Math.Sin(theta))));
}
