// Defines the noise generator to be used
public Generator CreateGenerator()
{
PinkNoise baseNoise = new PinkNoise(seed);
baseNoise.Persistence = .05f;
baseNoise.Frequency = .1f;
Generator baseNoiseGain = baseNoise.Gain(0f);
VoronoiValleys2D voronoiMod = new VoronoiValleys2D(seed);
voronoiMod.Frequency = .05f;
Generator voronoiModGain = voronoiMod.Gain(.5f);
Generator noise = voronoiModGain * baseNoiseGain;
//noise.Binarize(threshold);
noise = noise.ScaleShift(1f, .5f);
noise = noise.ScaleShift(5, 0);
return noise;
}
private bool m_CameraChangingHeight; // is camera height changing?
void Start()
{
if (!Terrain1 || !Terrain2)
{
Debug.LogError("Terrains not set!!");
enabled = false;
}
// desert dune-like ridges are created using RidgeNoise. it is scaled down a bit, and Gain applied to make ridges more pronounced
var desert = new Gain(
new RidgeNoise(23478568)
{
OctaveCount = 8
} * 0.6f, 0.4f);
// hills use a simple pink noise.
var hills = new PinkNoise(3465478)
{
OctaveCount = 5, // smooth hills (no higher frequencies)
Persistence = 0.56f // but steep (changes rapidly in the frequencies we do have)
};
// weight decides, whether a given point is hills or desert
// cached, as we'd need it to decide texture at every point
m_Weight = new Cache(new PinkNoise(346546)
{
Frequency = 0.5f,
OctaveCount = 3
}.ScaleShift(0.5f, 0.5f));
// overall heightmap blends hills and deserts
m_Generator = desert.Blend(hills, m_Weight).ScaleShift(0.5f, 0.5f);
// as changes to terrains made in playmode get saved in the editor, we need to re-generate terrains
// at start. The coroutine will set m_Move in the end, so that camera does not fly intil it's ready
#if UNITY_EDITOR
StartCoroutine(CreateMapsAtStart());
#else
m_NoiseCoord=1;
m_Move=true;
#endif
}
public PinkNoiseOption(int seed)
{
generator = new PinkNoise(seed);
}
// Generates some nice-looking Perlin noise.
public float[,] GenerateRawNoise(int width, int height)
{
float[,] samples = new float[width, height];
//Generator generator = new ValueNoise(Random.Range(1, 65536), SCurve.Cubic);
Generator generator = new PinkNoise(Seed);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
float xCoord = (float)x / width;
float yCoord = (float)y / height;
float sample = generator.GetValue(xCoord, yCoord, 0);
// PinkNoise usually returns value in [-1,1] but this is not guaranteed.
sample = Mathf.Clamp(sample, -1, 1);
// Convert value from [-1,1] to [0,1].
sample = MathUtils.ConvertRange(-1, 1, 0, 1, sample);
samples[x, y] = sample;
}
}
return samples;
}
