void Boot()
{
t = GetComponent <Terrain> ();
tdata = t.terrainData;
tdata.splatPrototypes = SplatsFromColors(color_lut);
tdata.alphamapResolution = tdata.heightmapResolution = twidth;
float[,] heightmap = new float[twidth, twidth];
SeedHeightmap(ref heightmap);
for (int i = 0; i < 5; i++)
{
FloatPropagate.Blur(ref heightmap);
}
tdata.SetHeights(0, 0, heightmap);
tdata.SetAlphamaps(0, 0, SplatValuesFromTdata(ref tdata));
}
void SeedHeightmap(ref float[,] heightmap)
{
int xdim = heightmap.GetLength(0);
int ydim = heightmap.GetLength(1);
int seed_count = 3;
for (int dum = 0; dum < seed_count; dum++)
{
int xpos = Random.Range(0, xdim);
int ypos = Random.Range(0, ydim);
SpinDown(ref heightmap, xpos, ypos, 1f * dum / seed_count, 5, Random.Range(0f, Mathf.PI * 2f), xdim);
}
FloatPropagate.ForcePropagate(ref heightmap, offset: 0.05f);
for (int i = 0; i < 5; i++)
{
FloatPropagate.Blur(ref heightmap);
}
}