void Start()
{
int planetRadius = 60;
// Randomize the filename incase the file already exists
System.Random randomIntGenerator = new System.Random();
int randomInt = randomIntGenerator.Next();
string saveLocation = Paths.voxelDatabases + "/planet-" + randomInt + ".vdb";
Region volumeBounds = new Region(-planetRadius, -planetRadius, -planetRadius, planetRadius, planetRadius, planetRadius);
TerrainVolumeData data = VolumeData.CreateEmptyVolumeData <TerrainVolumeData>(volumeBounds, saveLocation);
// The numbers below control the thickness of the various layers.
TerrainVolumeGenerator.GeneratePlanet(data, planetRadius, planetRadius - 1, planetRadius - 10, planetRadius - 35);
// We need to commit this so that the changes made by the previous,line are actually written
// to the voxel database. Otherwise they are just kept in temporary storage and will be lost.
data.CommitChanges();
}
void Create3DSimplexNoiseVolumeVDB()
{
// Randomize the filename incase the file already exists
System.Random randomIntGenerator = new System.Random();
int randomInt = randomIntGenerator.Next();
string saveLocation = Paths.voxelDatabases + "/3d-simplex-noise-" + randomInt + ".vdb";
// The size of the volume we will generate
int width = 256;
int height = 256;
int depth = 256;
TerrainVolumeData data = VolumeData.CreateEmptyVolumeData <TerrainVolumeData>(new Region(0, 0, 0, width - 1, height - 1, depth - 1), saveLocation);
// This scale factor comtrols the size of the rocks which are generated.
float rockScale = 32.0f;
float invRockScale = 1.0f / rockScale;
// Let's keep the allocation outside of the loop.
MaterialSet materialSet = new MaterialSet();
// Iterate over every voxel of our volume
for (int z = 0; z < depth; z++)
{
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
// Make sure we don't have anything left in here from the previous voxel
materialSet.weights[0] = 0;
materialSet.weights[1] = 0;
materialSet.weights[2] = 0;
// Simplex noise is quite high frequency. We scale the sample position to reduce this.
float sampleX = (float)x * invRockScale;
float sampleY = (float)y * invRockScale;
float sampleZ = (float)z * invRockScale;
// Get the noise value for the current position.
// Returned value should be in the range -1 to +1.
float simplexNoiseValue = SimplexNoise.Noise.Generate(sampleX, sampleY, sampleZ);
// Cubiquity renders anything below the threshold as empty and anythng above as solid, but
// in general it is easiest if empty space is completly empty and solid space is completly
// solid. The exception to this is the region near our surface, where a gentle transition helps
// obtain smooth shading. By scaling by a large number and then clamping we achieve this effect
// of making most voxels fully solid or fully empty except near the surface..
simplexNoiseValue *= 5.0f;
simplexNoiseValue = Mathf.Clamp(simplexNoiseValue, -0.5f, 0.5f);
// Go back to the range 0.0 to 1.0;
simplexNoiseValue += 0.5f;
// And then to 0 to 255, ready to convert into a byte.
simplexNoiseValue *= 255;
// Write the final value value into the first material channel (the one with the rock texture).
// The value being written is usually 0 (empty) or 255 (solid) except around the transition.
materialSet.weights[0] = (byte)simplexNoiseValue;
// We can now write our computed voxel value into the volume.
data.SetVoxel(x, y, z, materialSet);
}
}
}
// We need to commit this so that the changes made by the previous,line are actually written
// to the voxel database. Otherwise they are just kept in temporary storage and will be lost.
data.CommitChanges();
Debug.Log("Voxel database has been saved to '" + saveLocation + "'");
}
void Create2DSimplexNoiseVolumeVDB()
{
// Randomize the filename incase the file already exists
System.Random randomIntGenerator = new System.Random();
int randomInt = randomIntGenerator.Next();
string saveLocation = Paths.voxelDatabases + "/2d-simplex-noise-" + randomInt + ".vdb";
// The size of the volume we will generate
int width = 256;
int height = 32;
int depth = 256;
TerrainVolumeData data = VolumeData.CreateEmptyVolumeData <TerrainVolumeData>(new Region(0, 0, 0, width - 1, height - 1, depth - 1), saveLocation);
// This scale factor comtrols the size of the rocks which are generated.
float rockScale = 32.0f;
float invRockScale = 1.0f / rockScale;
// Let's keep the allocation outside of the loop.
MaterialSet materialSet = new MaterialSet();
// Iterate over every voxel of our volume
for (int z = 0; z < depth; z++)
{
for (int x = 0; x < width; x++)
{
// Simplex noise is quite high frequency. We scale the sample position to reduce this.
float sampleX = (float)x * invRockScale;
float sampleZ = (float)z * invRockScale;
// Get the noise value for the current position.
// Returned value should be in the range -1 to +1.
float simplexNoiseValue = SimplexNoise.Noise.Generate(sampleX, sampleZ);
simplexNoiseValue += 1.0f;
simplexNoiseValue *= 16.0f;
for (int y = 0; y < height; y++)
{
// Make sure we don't have anything left in here from the previous voxel
materialSet.weights[0] = 0;
materialSet.weights[1] = 0;
materialSet.weights[2] = 0;
if (y < simplexNoiseValue)
{
// Write the final value value into the first material channel (the one with the rock texture).
// The value being written is usually 0 (empty) or 255 (solid) except around the transition.
materialSet.weights[0] = (byte)255;
}
// We can now write our computed voxel value into the volume.
data.SetVoxel(x, y, z, materialSet);
}
}
}
// We need to commit this so that the changes made by the previous,line are actually written
// to the voxel database. Otherwise they are just kept in temporary storage and will be lost.
data.CommitChanges();
Debug.Log("Voxel database has been saved to '" + saveLocation + "'");
}