static void DiamondStep(float[,] arr, int range, int x, int z, int reach, MathLib.UCL_Random rnd)
{
//Debug.LogWarning("diamondStep x:" + x +",z:" + z);
int count = 0;
float avg = 0.0f;
if (x - reach >= 0)
{
avg += arr[x - reach, z];
count++;
}
if (x + reach < range)
{
avg += arr[x + reach, z];
count++;
}
if (z - reach >= 0)
{
avg += arr[x, z - reach];
count++;
}
if (z + reach < range)
{
avg += arr[x, z + reach];
count++;
}
float val = reach / (float)range;
avg += rnd.Range(-val, val);
avg /= count;
arr[x, z] = avg;
}
static void SquareStep(float[,] arr, int range, int x, int z, int reach, MathLib.UCL_Random rnd)
{
int count = 0;
float avg = 0.0f;
if (x - reach >= 0 && z - reach >= 0)
{
avg += arr[x - reach, z - reach];
count++;
}
if (x - reach >= 0 && z + reach < range)
{
avg += arr[x - reach, z + reach];
count++;
}
if (x + reach < range && z - reach >= 0)
{
avg += arr[x + reach, z - reach];
count++;
}
if (x + reach < range && z + reach < range)
{
avg += arr[x + reach, z + reach];
count++;
}
float val = reach / (float)range;
avg += rnd.Range(-val, val);
avg /= count;
arr[x, z] = avg;
}
static void DiamondSquare(float[,] arr, int range, int sx, int sz, int size, MathLib.UCL_Random rnd)
{
int half = size / 2;
if (half < 1)
{
return;
}
//square steps
for (int z = half; z < range; z += size)
{
for (int x = half; x < range; x += size)
{
SquareStep(arr, range, sx, sz, x, z, half, rnd);
}
}
// diamond steps
int col = 0;
for (int x = 0; x < range; x += half)
{
col++;
//If this is an odd column.
if (col % 2 == 1)
{
for (int z = half; z < range; z += size)
{
DiamondStep(arr, range, sx, sz, x, z, half, rnd);
}
}
else
{
for (int z = 0; z < range; z += size)
{
DiamondStep(arr, range, sx, sz, x, z, half, rnd);
}
}
}
//return;
DiamondSquare(arr, range, sx, sz, size / 2, rnd);
return;
}
static void SquareStep(float[,] arr, int range, int sx, int sz, int x, int z, int reach, MathLib.UCL_Random rnd)
{
//Debug.LogWarning("SquareStep sx:" + sx+ ",sz:" + sz + ",x:" + x + ",z:" + z);
int count = 0;
float avg = 0.0f;
if (x - reach >= 0 && z - reach >= 0)
{
avg += arr[x - reach + sx, z - reach + sz];
count++;
}
if (x - reach >= 0 && z + reach < range)
{
avg += arr[x - reach + sx, z + reach + sz];
count++;
}
if (x + reach < range && z - reach >= 0)
{
avg += arr[x + reach + sx, z - reach + sz];
count++;
}
if (x + reach < range && z + reach < range)
{
avg += arr[x + reach + sx, z + reach + sz];
count++;
}
float val = reach / (float)range;
avg += rnd.Range(-val, val);
avg /= count;
arr[x + sx, z + sz] = avg;
}
public static void DiamondSquare(float[,] arr, int sx, int sz, int range, MathLib.UCL_Random rnd)
{
DiamondSquare(arr, range, sx, sz, range - 1, rnd);
}
public static void DiamondSquare(float[,] arr, int step, MathLib.UCL_Random rnd)
{
DiamondSquare(arr, step, step - 1, rnd);
}
public static void DiamondSquare(float[,] arr, MathLib.UCL_Random rnd)
{
DiamondSquare(arr, arr.GetLength(0), arr.GetLength(0) - 1, rnd);
}