} // public struct TerrainSample
//==================================================================
static public TerrainSample GetTerrainSample(Vector3 coordinates)
{
Vector3 noiseCoordinates = new Vector3(coordinates.x - _heightmapNoiseSettings.offsetX, _heightmapNoiseSettings.offsetY, coordinates.z - _heightmapNoiseSettings.offsetZ);
// get a NoiseSample at the given coordinates
NoiseGenerator.NoiseSample noiseSample = NoiseGenerator.Sum(
NoiseGenerator.methods[(int)_heightmapNoiseSettings.type],
noiseCoordinates,
_heightmapNoiseSettings.frequency,
_heightmapNoiseSettings.octaves,
_heightmapNoiseSettings.lacunarity,
_heightmapNoiseSettings.persistence);
if (!_isIsland)
{
noiseSample = (noiseSample + 1f) * 0.5f;
//noiseSample.value = _heightmapNoiseSettings.adjustmentCurve.Evaluate(noiseSample.value);
noiseSample *= _heightmapMaxHeight;
}
else
{
noiseSample = (noiseSample + 1f) * 0.5f;
//noiseSample.value = _heightmapNoiseSettings.adjustmentCurve.Evaluate(noiseSample.value);
float fallofStartRadius = _islandRadiusMin * _heightmapSize * 0.5f * _nTilesHorizontal;
float fallofEndRadius = _islandRadiusMax * _heightmapSize * 0.5f * _nTilesHorizontal;
noiseSample *= QuadraticFallofCurve(coordinates, fallofStartRadius, fallofEndRadius);
noiseSample *= _heightmapMaxHeight;
}
// Return a new TerrainSample = adjusted NoiseSample + additional info about normal vector and steepness
TerrainSample newTerrainSample = new TerrainSample
{
height = noiseSample.value,
derivative = noiseSample.derivative,
normal = new Vector3(-noiseSample.derivative.x, 1f, -noiseSample.derivative.z).normalized
};
newTerrainSample.steepness = Vector3.Angle(Vector3.up, newTerrainSample.normal);
return newTerrainSample;
} // static public TerrainSample GetTerrainSample(Vector3 coordinates)
public override void Initialize()
{
sample = new TerrainSample();
Name = sample.Metadata[ "Title" ] + " Sample";
AddSample( sample );
}
