public static HeightMap GenBasicTerrainMap(HeightmapProperties heightProps, int seed)
{
HeightMap h = new HeightMap(heightProps.size, seed);
h.AddPerlinNoise(heightProps.perlinFreq);
h.Perturb(heightProps.perturb, heightProps.perturb);
for (int i = 0; i < HeightMapGen.erodePasses; i++ )
h.Erode(heightProps.erode);
h.Smoothen();
return h;
}
public void Blend(HeightMap subMap, string blendMode, int x, int y, float amount)
{
int diam = subMap.Size;
float rad = diam / 2;
int heightsXLen = Heights.GetLength (0);
int heightsYLen = Heights.GetLength (1);
for (int i = 0; i < diam; ++i)
{
for (int j = 0; j < diam; ++j)
{
int origX = (int) (x + (i - rad));
int origY = (int) (y + (j - rad));
//Check if point falls within a circle
double diffXSq = Math.Pow((double) (x - origX), 2.0);
double diffYSq = Math.Pow((double) (y - origY), 2.0);
double radSq = Math.Pow ((double) rad, 2.0);
int actualX = GetSeamlessPoint(heightsXLen, origX);
int actualY = GetSeamlessPoint(heightsYLen, origY);
if (diffXSq + diffYSq <= radSq) {
//if (actualX < heightsXLen && actualY < heightsYLen && actualX >= 0 && actualY >= 0) {
switch (blendMode) {
case "add":
Heights[actualX, actualY] += (1f + Math.Abs (subMap.Heights[i, j])) * amount;
break;
case "subtract":
Heights[actualX, actualY] -= Math.Abs (subMap.Heights[i, j]) * amount;
break;
}
if (Heights[actualX, actualY] <= 0.0f) {
Heights[actualX, actualY] = 0.001f;
} else if (Heights[actualX, actualY] > 5.0f) {
Heights[actualX, actualY] = 5.0f;
}
//}
}
}
}
}
