public NodeGrid(Sz2 <int> strides, IEnumerable <P1V <int, float> > tuples, int generation, int seed)
{
Strides = strides;
Values = new float[Strides.Count()];
foreach (var tup in tuples)
{
Values[tup.X] = tup.V;
}
Generation = generation;
Seed = seed;
var randy = GenV.Twist(Seed);
Noise = GenS.NormalSF32(randy, 0.0f, 1.0f).Take(Strides.Count()).ToArray();
NextSeed = randy.Next();
var Offhi = new P2 <int>(0, -1);
var Offlo = new P2 <int>(0, 1);
var Offlf = new P2 <int>(-1, 0);
var Offrt = new P2 <int>(1, 0);
Top = GridUtil.OffsetIndexes(Strides, Offhi);
Bottom = GridUtil.OffsetIndexes(Strides, Offlo);
Left = GridUtil.OffsetIndexes(Strides, Offlf);
Right = GridUtil.OffsetIndexes(Strides, Offrt);
}
public Star4Grid(float[,] initVals, float[,] fixedVals, int seed)
{
Seed = seed;
Noise = GenS.NormalSF32(GenV.Twist(seed), 0.0f, 1.0f);
Stars = Star4Procs.MakeStarGrid(initVals, fixedVals);
Rows = Stars.GetLength(1);
Columns = Stars.GetLength(0);
Generation = 0;
}
public StarGrid(float[,] initVals, int noiseSeed)
{
NoiseSeed = noiseSeed;
Noise = GenS.NormalSF32(GenV.Twist(NoiseSeed), 0.0f, 1.0f);
Stars = StarProcs.MakeStarGrid(initVals);
Rows = Stars.GetLength(1);
Columns = Stars.GetLength(0);
Generation = 0;
}
public static NodeGrid RandNodeGrid(Sz2 <int> bounds, int initSeed, int updateSeed)
{
var nodeVals = GenS.SeqOfRandUF32(GenV.Twist(initSeed)).Take(bounds.Count()).ToArray();
var tuples = Enumerable.Range(0, bounds.Count()).Select(i => new P1V <int, float>(i, nodeVals[i]));
return(new NodeGrid(
strides: bounds,
tuples: tuples,
generation: 0,
seed: updateSeed
));
}