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DistortedVoronoi BiomeGen now uses 4x4 linear interpolation for distortion, 50 % speed increase in the chunk generator with a hardly noticeable change in biome shapes.

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git-svn-id: http://mc-server.googlecode.com/svn/trunk@708 0a769ca7-a7f5-676a-18bf-c427514a06d6
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madmaxoft@gmail.com
2012-07-29 20:15:03 +00:00
parent 41e7452dcc
commit e49313202c
3 changed files with 98 additions and 4 deletions
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17
source/BioGen.cpp
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@@ -258,14 +258,25 @@ void cBioGenDistortedVoronoi::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::B
{
int BaseZ = cChunkDef::Width * a_ChunkZ;
int BaseX = cChunkDef::Width * a_ChunkX;
// Distortions for linear interpolation:
int DistortX[cChunkDef::Width + 1][cChunkDef::Width + 1];
int DistortZ[cChunkDef::Width + 1][cChunkDef::Width + 1];
for (int x = 0; x <= 4; x++) for (int z = 0; z <= 4; z++)
{
Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z]);
}
IntArrayLinearInterpolate2D(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
IntArrayLinearInterpolate2D(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
for (int z = 0; z < cChunkDef::Width; z++)
{
int AbsoluteZ = BaseZ + z;
for (int x = 0; x < cChunkDef::Width; x++)
{
int DistX, DistZ;
Distort(BaseX + x, AbsoluteZ, DistX, DistZ);
cChunkDef::SetBiome(a_BiomeMap, x, z, VoronoiBiome(DistX, DistZ));
// Distort(BaseX + x, AbsoluteZ, DistX, DistZ);
cChunkDef::SetBiome(a_BiomeMap, x, z, VoronoiBiome(DistortX[x][z], DistortZ[x][z]));
} // for x
} // for z
}