public void Execute(int index)
{
var voxelIndex = new VoxelIndex
{
Value = index
};
var rootCoordiante = voxelLayout.GetCoordinatesFromVoxelIndex(voxelIndex);
var originalSelfValue = sourceDiffusionValues[voxelIndex.Value];
float newValue = originalSelfValue;
for (int adjacencyIndex = 0; adjacencyIndex < adjacencyVectors.Length; adjacencyIndex++)
{
var offset = adjacencyVectors[adjacencyIndex];
var sampleCoordinate = offset + rootCoordiante;
var sampleIndex = voxelLayout.GetVoxelIndexFromCoordinates(sampleCoordinate);
if (!sampleIndex.IsValid)
{
// if the index is outside of bounds, do no diffusion
// this should have an effect of conserving all resources inside the bounds, none
// should be lost or gained from the boundary conditions
continue;
}
var sampleValue = sourceDiffusionValues[sampleIndex.Value];
var diffusionAdjustment = diffusionConstant;
var diffuseAmount = (sampleValue - originalSelfValue) * diffusionAdjustment;
newValue += diffuseAmount;
}
targetDiffusionValues[voxelIndex.Value] = newValue;
}
public void Execute(int index)
{
if ((oneDimensionalKernel.Length - 1) % 2 != 0)
{
throw new System.Exception("kernel must be odd number length");
}
Vector3Int axisVector;
switch (diffuseAxis)
{
case DiffusionAxis.X:
axisVector = new Vector3Int(1, 0, 0);
break;
case DiffusionAxis.Y:
axisVector = new Vector3Int(0, 1, 0);
break;
case DiffusionAxis.Z:
axisVector = new Vector3Int(0, 0, 1);
break;
default:
throw new System.Exception("must specify diffuse axis");
}
var voxelIndex = new VoxelIndex
{
Value = index
};
var rootCoordiante = voxelLayout.GetCoordinatesFromVoxelIndex(voxelIndex);
var kernelOrigin = oneDimensionalKernel.Length / 2;
float newValue = 0;
for (int kernelIndex = 0; kernelIndex < oneDimensionalKernel.Length; kernelIndex++)
{
var offset = axisVector * (kernelIndex - kernelOrigin);
var kernelWeight = oneDimensionalKernel[kernelIndex];
var sampleCoordinate = offset + rootCoordiante;
var sampleIndex = voxelLayout.GetVoxelIndexFromCoordinates(sampleCoordinate);
float sampleValue;
if (!sampleIndex.IsValid)
{
sampleValue = boundaryValue;
}
else
{
sampleValue = sourceDiffusionValues[sampleIndex.Value];
}
newValue += sampleValue * kernelWeight;
}
targetDiffusionValues[voxelIndex.Value] = newValue;
}
