// CIRCLE with R=1
public static Vector2 Circle( ref UMT.MersenneTwister _rand )
{
float t = (float) _rand.Next();
float _2pi = (float) Math.PI * 2;
float a = MTRandom.ScaleFloatToRange(t, 0, _2pi, 0, Int32.MaxValue);
return new Vector2( (float) Math.Cos(a) , (float) Math.Sin(a));
}
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 Vector3 Surface(ref UMT.MersenneTwister _rand)
{
// Move to -1, 1 space as for CIRCLE and SPHERE
Vector3 pos = GetPointOnCubeSurface(_rand.NextSingle(true),_rand.NextSingle(true),_rand.Next(6));
return new Vector3((2*pos.x)-1, (2*pos.y)-1, (2*pos.z)-1);
}