public static Vector2 VoronoiUnit(Vector2 _v)
{
float sqrDstToCell = float.MaxValue;
Vector2 baseCell = Swizzling.Floor(_v);
Vector2 closetCell = baseCell;
for (int i = -1; i <= 1; i++)
{
for (int j = -1; j <= 1; j++)
{
Vector2 cell = baseCell + new Vector2(i, j);
Vector2 cellPos = cell + VelueUnitVec2(cell);
Vector2 toCell = cellPos - _v;
float sqrDistance = toCell.sqrMagnitude;
if (sqrDstToCell < sqrDistance)
{
continue;
}
sqrDstToCell = sqrDistance;
closetCell = cell;
}
}
return(new Vector2(sqrDstToCell, ValueUnit(closetCell)));
}
public static float SimplexUnit(Vector2 _v)
{
Vector2 i = Swizzling.Floor(_v + Vector2.Dot(_v, s_Simplex_C.y.ToVector2()).ToVector2());
Vector2 x0 = _v - i + Vector2.Dot(i, s_Simplex_C.x.ToVector2()).ToVector2();
Vector2 i1 = x0.x > x0.y ? new Vector2(1, 0) : new Vector2(0, 1);
Vector4 x12 = new Vector4(x0.x, x0.y, x0.x, x0.y) + new Vector4(s_Simplex_C.x, s_Simplex_C.x, s_Simplex_C.z, s_Simplex_C.z);
x12 -= i1.ToVector4();
i = Mod289(i);
Vector3 p = Permute(Permute(new Vector3(i.y, i.y + i1.y, i.y + 1)) + new Vector3(i.x, i.x + i1.x, i.x + 1));
Vector2 x12xy = new Vector2(x12.x, x12.y);
Vector2 x12zw = new Vector2(x12.z, x12.w);
Vector3 m = Vector3.Max(0.5f.ToVector3() - new Vector3(Vector2.Dot(x0, x0), Vector2.Dot(x12xy, x12xy), Vector2.Dot(x12zw, x12zw)), Vector3.zero);
m = m.Multiply(m);
m = m.Multiply(m);
Vector3 x = 2.0f * Swizzling.Frac(p * s_Simplex_C.w) - 1.0f.ToVector3();
Vector3 h = Swizzling.Abs(x) - 0.5f.ToVector3();
Vector3 ox = Swizzling.Floor(x + 0.5f.ToVector3());
Vector3 a0 = x - ox;
m = m.Multiply(s_Simplex_M1 - s_Simplex_M2 * (a0.Multiply(a0) + h.Multiply(h)));
float gx = a0.x * x0.x + h.x * x0.y;
Vector2 gyz = new Vector2(a0.y, a0.z) * new Vector2(x12.x, x12.z) + new Vector2(h.y, h.z) * new Vector2(x12.y, x12.w);
return(130f * Vector3.Dot(m, new Vector3(gx, gyz.x, gyz.y)));
}
static void DecodeImage(string basename)
{
var Lzx = new LzxDecoder(16);
var Stream = new MemoryStream(File.ReadAllBytes(basename));
var Reader = new BinaryReader(Stream);
Stream.Position = 6;
var OutStream = DecompressLzx(Stream);
Console.WriteLine(OutStream.Length);
File.WriteAllBytes(basename + ".u", OutStream.ToArray());
#if true
//OutStream.Position = 0x30A;
//var Bitmap = DXT5.LoadSwizzled(OutStream, 0x40, 0x80, Swizzled: true);
//Bitmap.Save(basename + ".u.png");
OutStream.Position = 0x37;
var Reader2 = new BinaryReader(OutStream);
var Format = Reader2.ReadInt32();
var Width = Reader2.ReadInt32();
var Height = Reader2.ReadInt32();
var Levels = Reader2.ReadInt32();
for (int Level = 0; Level < Levels; Level++)
{
OutStream.Position = 0x4B;
//var Bitmap = new Bitmap(256, 512);
//var Bitmap = new Bitmap(1024, 128);
//var Bitmap = new Bitmap(512, 256);
//var Bitmap = new Bitmap(1024, 1024);
//var Bitmap = new Bitmap(128, 128);
var Bitmap = new Bitmap(Width, Height);
//var Bitmap = new Bitmap(64, 64);
//var BitmapData = OutStream.ReadStructVector<RGBA>((uint)(Bitmap.Width * Bitmap.Height));
//var BitmapData = OutStream.ReadBytes(Bitmap.Width * Bitmap.Height * 4);
int Size = Bitmap.Width * Bitmap.Height;
for (int n = 0; n < Size; n++)
{
int x, y;
Swizzling.UnswizzledXY(n, Bitmap.Width, 4, out x, out y);
var RGBA = OutStream.ReadStruct <RGBA>();
Bitmap.SetPixel(x, y, Color.FromArgb(0xFF, RGBA.R, RGBA.G, RGBA.B));
}
//var Bitmap = DXT5.LoadSwizzled(OutStream, 0x40, 0x80, Swizzled: true);
//Bitmap.SetChannelsDataLinear(BitmapData, BitmapChannel.Red, BitmapChannel.Green, BitmapChannel.Blue, BitmapChannel.Alpha);
//Bitmap.SetChannelsDataLinear(BitmapData, BitmapChannel.Alpha, BitmapChannel.Green, BitmapChannel.Blue, BitmapChannel.Red);
Bitmap.Save(basename + ".u." + Level + ".png");
}
#endif
}
