void ReleaseVolumetricData()
{
if (volumetricData != null)
{
marchingCubesGPU.VolumetricData = null;
Texture3D.DestroyImmediate(volumetricData);
}
}
void Apply()
{
if (size < 2)
{
Debug.LogError("size should at least be 2");
return;
}
if (field == null || field.width != size)
{
if (field != null)
{
Texture3D.DestroyImmediate(field);
}
field = new Texture3D(size, size, size, TextureFormat.ARGB32, false);
}
// TODO should compute accMul beforehand?
var tensor = new Vector3[size * size * size];
float accMul = 0;
if (layers != null)
{
foreach (var l in layers)
{
if (l.mul > 0)
{
accMul += l.mul;
NoiseLayer(tensor, size, l.scale, l.offset, l.mul);
}
}
}
var texels = new Color[tensor.Length];
if (accMul > 0)
{
for (int i = 0; i != tensor.Length; ++i)
{
var tmp = ((tensor[i] / accMul) + Vector3.one) / 2.0f;
texels[i] = new Color(tmp.x, tmp.y, tmp.z);
}
}
else
{
for (int i = 0; i != tensor.Length; ++i)
{
// We encode normalized values so 0 is gray
texels[i] = Color.white / 2.0f;
}
}
field.SetPixels(texels);
field.Apply();
GetComponent <ParticleSystemGPGPU> ().velocityField = field;
}