private int FindInflatingBrickSize(Vector3 size, ProbeVolume pv)
{
var refVol = ProbeReferenceVolume.instance;
float minSizedDim = Mathf.Min(size.x, Mathf.Min(size.y, size.z));
float minBrickSize = refVol.MinBrickSize();
float minSideInBricks = Mathf.CeilToInt(minSizedDim / minBrickSize);
int absoluteMaxSubdiv = ProbeReferenceVolume.instance.GetMaxSubdivision() - 1;
minSideInBricks = Mathf.Max(minSideInBricks, Mathf.Pow(3, absoluteMaxSubdiv - (pv.overridesSubdivLevels ? pv.highestSubdivLevelOverride : 0)));
int subdivLevel = Mathf.FloorToInt(Mathf.Log(minSideInBricks, 3));
return(subdivLevel);
}
private void InflateBound(ref Bounds bounds, ProbeVolume pv)
{
Bounds originalBounds = bounds;
// Round the probe volume bounds to cell size
float cellSize = ProbeReferenceVolume.instance.MaxBrickSize();
// Expand the probe volume bounds to snap on the cell size grid
bounds.Encapsulate(new Vector3(cellSize * Mathf.Floor(bounds.min.x / cellSize),
cellSize * Mathf.Floor(bounds.min.y / cellSize),
cellSize * Mathf.Floor(bounds.min.z / cellSize)));
bounds.Encapsulate(new Vector3(cellSize * Mathf.Ceil(bounds.max.x / cellSize),
cellSize * Mathf.Ceil(bounds.max.y / cellSize),
cellSize * Mathf.Ceil(bounds.max.z / cellSize)));
// calculate how much padding we need to remove according to the brick generation in ProbePlacement.cs:
var cellSizeVector = new Vector3(cellSize, cellSize, cellSize);
var minPadding = (bounds.min - originalBounds.min);
var maxPadding = (bounds.max - originalBounds.max);
minPadding = cellSizeVector - new Vector3(Mathf.Abs(minPadding.x), Mathf.Abs(minPadding.y), Mathf.Abs(minPadding.z));
maxPadding = cellSizeVector - new Vector3(Mathf.Abs(maxPadding.x), Mathf.Abs(maxPadding.y), Mathf.Abs(maxPadding.z));
// Find the size of the brick we can put for every axis given the padding size
float rightPaddingSubdivLevel = ProbeReferenceVolume.instance.BrickSize(FindInflatingBrickSize(new Vector3(maxPadding.x, originalBounds.size.y, originalBounds.size.z), pv));
float leftPaddingSubdivLevel = ProbeReferenceVolume.instance.BrickSize(FindInflatingBrickSize(new Vector3(minPadding.x, originalBounds.size.y, originalBounds.size.z), pv));
float topPaddingSubdivLevel = ProbeReferenceVolume.instance.BrickSize(FindInflatingBrickSize(new Vector3(originalBounds.size.x, maxPadding.y, originalBounds.size.z), pv));
float bottomPaddingSubdivLevel = ProbeReferenceVolume.instance.BrickSize(FindInflatingBrickSize(new Vector3(originalBounds.size.x, minPadding.y, originalBounds.size.z), pv));
float forwardPaddingSubdivLevel = ProbeReferenceVolume.instance.BrickSize(FindInflatingBrickSize(new Vector3(originalBounds.size.x, originalBounds.size.y, maxPadding.z), pv));
float backPaddingSubdivLevel = ProbeReferenceVolume.instance.BrickSize(FindInflatingBrickSize(new Vector3(originalBounds.size.x, originalBounds.size.y, minPadding.z), pv));
// Remove the extra padding caused by cell rounding
bounds.min = bounds.min + new Vector3(
leftPaddingSubdivLevel * Mathf.Floor(Mathf.Abs(bounds.min.x - originalBounds.min.x) / (float)leftPaddingSubdivLevel),
bottomPaddingSubdivLevel * Mathf.Floor(Mathf.Abs(bounds.min.y - originalBounds.min.y) / (float)bottomPaddingSubdivLevel),
backPaddingSubdivLevel * Mathf.Floor(Mathf.Abs(bounds.min.z - originalBounds.min.z) / (float)backPaddingSubdivLevel)
);
bounds.max = bounds.max - new Vector3(
rightPaddingSubdivLevel * Mathf.Floor(Mathf.Abs(bounds.max.x - originalBounds.max.x) / (float)rightPaddingSubdivLevel),
topPaddingSubdivLevel * Mathf.Floor(Mathf.Abs(bounds.max.y - originalBounds.max.y) / (float)topPaddingSubdivLevel),
forwardPaddingSubdivLevel * Mathf.Floor(Mathf.Abs(bounds.max.z - originalBounds.max.z) / (float)forwardPaddingSubdivLevel)
);
}