public void TestDensityCalcPerformance()
{
var dens = VoxelTerrainGenerationTest.createDensityFunction5Perlin(11, 10);
var times = 10000;
var s = new Stopwatch();
s.Start();
for (int i = 0; i < times; i++)
{
float a = dens(new Vector3(1));
}
s.Stop();
var densityEval = s.Elapsed.TotalSeconds / times;
Console.WriteLine("Density evaluation: 100% - {0} ms", +densityEval * 1000);
s.Reset();
s.Start();
for (int i = 0; i < times * 5; i++)// 5 trilerps per density lookup
{
float a = TWMath.triLerp(new Vector3(0.5f), 4, 7, 8, 6, 4, 8, 9, 7);
}
s.Stop();
var trilerp = s.Elapsed.TotalSeconds / times;
Console.WriteLine("Trilerp : {0:###}% - {1}ms", trilerp / densityEval * 100, trilerp * 1000);
var ar = new Array3D <float>(new Point3(16, 16, 16));
s.Reset();
s.Start();
for (int i = 0; i < times * 5 * 8; i++)// 8 getTiled per trilerp and 5 trilerps per density lookup
{
/*var pos = new Point3(5, 5, 5);
* pos.X = TWMath.nfmod(pos.X, ar.Size.X);
* pos.Y = TWMath.nfmod(pos.Y, ar.Size.Y);
* pos.Z = TWMath.nfmod(pos.Z, ar.Size.Z);
* float a = ar.arr[pos.X, pos.Y, pos.Z];*/
float a = ar.GetTiled(new Point3(5, 5, 5));
}
s.Stop();
var getTiled = s.Elapsed.TotalSeconds / times;
Console.WriteLine("GetTiled : {0:###}% - {1}ms", getTiled / densityEval * 100, getTiled * 1000);
}
public void TestGenerateTerrain([Values(16, 32, 64)] int size)
{
var dens = VoxelTerrainGenerationTest.createDensityFunction5Perlin(11, 10);
var densityGrid = (AbstractHermiteGrid) new DensityFunctionHermiteGrid(dens, new Point3(size, size, size));
var times = 10;
var s = new Stopwatch();
s.Start();
for (int i = 0; i < times; i++)
{
var grid = HermiteDataGrid.CopyGrid(densityGrid);
}
s.Stop();
Console.WriteLine("Time per copy:" + s.Elapsed.Multiply(1f / times).PrettyPrint());
Console.WriteLine("Time per cell: " + s.Elapsed.Multiply(1f / times / (size * size * size)).PrettyPrint());
}
public void TestCountDensLookups20()
{
var dens = VoxelTerrainGenerationTest.createDensityFunction5Perlin(11, 10);
var numLookups = 0;
var newDens = new Func <Vector3, float>(v =>
{
numLookups++;
return(dens(v));
});
int size = 20;
var grid = (AbstractHermiteGrid) new DensityFunctionHermiteGrid(newDens, new Point3(size, size, size));
grid = HermiteDataGrid.CopyGrid(grid);
Console.WriteLine("Density lookups: " + numLookups);
Console.WriteLine("Lookups per cell: {0:#0.00}", (float)numLookups / (size * size * size));
}
public TerrainLodEnvironment()
{
tree = new LodOctree();
var size = 32 * (1 << 10);
rootNode = tree.Create(size, size);
//octreeOffset = new Vector3(0, size, 0);
octreeOffset = new Vector3(0, 0, 0);
density = VoxelTerrainGenerationTest.createDensityFunction5Perlin(17, size / 2);
//density = v => DensityHermiteGridTest.SineXzDensityFunction(v, 1/5f, size/2, 3);
density = densityFunction;
densityGrid = new DensityFunctionHermiteGrid(density, new Point3(size, size, size));
minNodeSize = 32;
}