unsafe void CalculatePoint(VoxelVolume volume, VoxelLightPropagator.ChannelPropagator channelProp)
{
Parallel.ForEach(volume, (chunk) => {
Coords c = new Coords(0, 0, 0);
for (c.X = 0; c.X < VoxelChunk.SIZE; c.X++)
{
for (c.Y = 0; c.Y < VoxelChunk.SIZE; c.Y++)
{
for (c.Z = 0; c.Z < VoxelChunk.SIZE; c.Z++)
{
var pointLevel = chunk.Voxels[c].Type?.PointLightLevel;
if (pointLevel is byte level)
{
channelProp.QueueForPropagation(chunk, c, level);
}
}
}
}
});
channelProp.Propagate();
}
// seeds sunlight over an entire volume, queueing nodes for propogation
unsafe void CalculateSunlight(VoxelVolume volume, int channel, VoxelLightPropagator.ChannelPropagator channelProp)
{
var cRegion = volume.ChunkRegion;
int axis = channel % 3; // x = 0, y = 1, z = 2
var neg = channel >= 3;
int ai = (axis + 1) % 3;
int bi = (axis + 2) % 3;
int ci = axis;
int minA, minB, minC;
int maxA, maxB, maxC;
minA = (&cRegion.Min.X)[ai];
maxA = (&cRegion.Max.X)[ai];
minB = (&cRegion.Min.X)[bi];
maxB = (&cRegion.Max.X)[bi];
int incr = neg ? -1 : 1;
Coords lCoords = Coords.ZERO;
if (neg)
{
minC = (&cRegion.Max.X)[ci] - 1;
maxC = (&cRegion.Min.X)[ci] - 1;
(&lCoords.X)[ci] = VoxelChunk.SIZE - 1;
}
else
{
minC = (&cRegion.Min.X)[ci];
maxC = (&cRegion.Max.X)[ci];
(&lCoords.X)[ci] = 0;
}
Coords cCoords = Coords.ZERO;
VoxelChunk chunk;
for (int ca = minA; ca < maxA; ca++)
{
for (int cb = minB; cb < maxB; cb++)
{
(&cCoords.X)[ai] = ca;
(&cCoords.X)[bi] = cb;
for (int cc = minC; cc != maxC; cc += incr)
{
(&cCoords.X)[ci] = cc;
chunk = volume[cCoords];
if (chunk != null)
{
for (int la = 0; la < VoxelChunk.SIZE; la++)
{
for (int lb = 0; lb < VoxelChunk.SIZE; lb++)
{
(&lCoords.X)[ai] = la;
(&lCoords.X)[bi] = lb;
*chunk.LightData[channel][lCoords] = VoxelLight.MAX_LIGHT;
channelProp.QueueForPropagation(chunk, lCoords);
}
}
break;
}
}
}
}
channelProp.Propagate();
}