| public SetBounds ( float min, float max ) : void | ||
| min | float | The minimum value. |
| max | float | The maximum value. |
| return | void | |
public void generate()
{
// Get the terrain data of the currently active terrain
var terrainData = Terrain.activeTerrain.terrainData;
// A new ridged multifractal generator
var generator = new RidgedMultifractal(frequency, lacu, octaves, (int)(Random.value * 0xffffff), QualityMode.High);
// The thresholded output -- choose either 0.0 or 1.0, based on the output
var clamped = new LibNoise.Operator.Select(new Const(0.0f), new Const(1.0f), generator);
// Set the threshold and falloff rate
clamped.SetBounds(0f, threshold);
clamped.FallOff = falloff;
// Create a 2D noise generator for the terrain heightmap, using the generator we just created
var noise = new Noise2D(terrainData.heightmapResolution, clamped);
// Generate a plane from [0, 1] on x, [0, 1] on y
noise.GeneratePlanar(0, 1, 0, 1);
// Get the data in an array so we can use it to set the heights
// var data = noise.GetData(true, 0, 0, true);
var data = noise.GetNormalizedData();
// .. and actually set the heights
terrainData.SetHeights(0, 0, data);
}
void Start()
{
// STEP 1
// Gradient is set directly on the object
var mountainTerrain = new RidgedMultifractal();
RenderAndSetImage(mountainTerrain);
// Stop rendering if we're only getting as far as this tutorial
// step. It saves me from doing multiple files.
if (_tutorialStep <= 1) return;
// STEP 2
var baseFlatTerrain = new Billow();
baseFlatTerrain.Frequency = 2.0;
RenderAndSetImage(baseFlatTerrain);
if (_tutorialStep <= 2) return;
// STEP 3
var flatTerrain = new ScaleBias(0.125, -0.75, baseFlatTerrain);
RenderAndSetImage(flatTerrain);
if (_tutorialStep <= 3) return;
// STEP 4
var terrainType = new Perlin();
terrainType.Frequency = 0.5;
terrainType.Persistence = 0.25;
var finalTerrain = new Select(flatTerrain, mountainTerrain, terrainType);
finalTerrain.SetBounds(0, 1000);
finalTerrain.FallOff = 0.125;
RenderAndSetImage(finalTerrain);
}
void Start()
{
var mountainTerrain = new RidgedMultifractal();
var baseFlatTerrain = new Billow();
baseFlatTerrain.Frequency = 2.0;
var flatTerrain = new ScaleBias(0.125, -0.75, baseFlatTerrain);
var terrainType = new Perlin();
terrainType.Frequency = 0.5;
terrainType.Persistence = 0.25;
// Create the selector for turbulence
var terrainSelector = new Select(flatTerrain, mountainTerrain, terrainType);
terrainSelector.SetBounds(0, 1000);
terrainSelector.FallOff = 0.125f;
var finalTerrain = new Turbulence(terrainSelector);
finalTerrain.Frequency = _frequency;
finalTerrain.Power = _power;
RenderAndSetImage(finalTerrain);
}
void Start()
{
var mountainTerrain = new RidgedMultifractal();
var baseFlatTerrain = new Billow();
baseFlatTerrain.Frequency = 2.0;
var flatTerrain = new ScaleBias(0.125, -0.75, baseFlatTerrain);
var terrainType = new Perlin();
terrainType.Frequency = 0.5;
terrainType.Persistence = 0.25;
var terrainSelector = new Select(flatTerrain, mountainTerrain, terrainType);
terrainSelector.SetBounds(0, 1000);
terrainSelector.FallOff = 0.125f;
/*
* From the tutorial text:
*
* Next, you'll apply a bias of +375 to the output from the terrainSelector
* noise module. This will cause its output to range from (-375 + 375) to
* (+375 + 375), or in other words, 0 to 750. You'll apply this bias so
* that most of the elevations in the resulting terrain height map are
* above sea level.
*/
var terrainScaler = new ScaleBias(terrainSelector);
terrainScaler.Scale = _scale;
terrainScaler.Bias = _bias;
var finalTerrain = new Turbulence(terrainScaler);
finalTerrain.Frequency = _frequency;
finalTerrain.Power = _power;
RenderAndSetImage(finalTerrain);
}