private static unsafe void Precompute()
{
var samples = 128;
var divideBy = 8;
var globalBounds = new Cube(-6.5f, -6.5f, -6.5f, 13.0f);
var tileWidth = globalBounds.Side / divideBy;
var tiles = Enumerable.Range(0, divideBy)
.SelectMany(x => Enumerable.Range(0, divideBy)
.SelectMany(y => Enumerable.Range(0, divideBy)
.Select(z => new
{
x = x,
y = y,
z = z,
bounds = new Cube(
globalBounds.X + x * tileWidth,
globalBounds.Y + y * tileWidth,
globalBounds.Z + z * tileWidth,
tileWidth)
})))
.ToArray();
Directory.CreateDirectory("data");
tiles.AsParallel()
.WithMergeOptions(ParallelMergeOptions.NotBuffered)
.ForAll(tile =>
{
Console.WriteLine("x:{0} y:{1} z:{2}", tile.x, tile.y, tile.z);
var buffer = new byte[samples * samples * samples]; // 1 sample per bit
unsafe
{
fixed (byte* bufferPtr = buffer)
{
compute(tile.bounds, samples, (IntPtr)bufferPtr);
}
}
using (var stream = new GZipStream(File.Create(string.Format("data/tile-{0}-{1}-{2}.bin", tile.x, tile.y, tile.z)), CompressionLevel.Fastest))
{
stream.Write(buffer, 0, buffer.Length);
}
});
}
private static extern void compute(
Cube bounds,
int samples,
IntPtr buffer);
private static extern void compute(
Cube bounds,
int samples,
IntPtr buffer);