void ShuffleBlockPositions_Block(TTexturePointBlock Block)
{
int First = Block.DataTextureIndexOffset;
int Count = Block.PointCount;
var PositionPixels = BlockPositions.GetPixels();
var ColourPixels = BlockColours.GetPixels();
// grab a copy of all the pixels
var BlockPositionPixels = new List <Color>();
var BlockColourPixels = new List <Color>();
for (int i = 0; i < Count; i++)
{
BlockPositionPixels.Add(PositionPixels [First + i]);
BlockColourPixels.Add(ColourPixels [First + i]);
}
// write back pixels at random removing the used ones as we go
for (int i = 0; i < Count; i++)
{
var RandomIndex = Random.Range(0, BlockPositionPixels.Count - 1);
PositionPixels [First + i] = BlockPositionPixels [RandomIndex];
ColourPixels [First + i] = BlockColourPixels [RandomIndex];
BlockPositionPixels.RemoveAt(RandomIndex);
BlockColourPixels.RemoveAt(RandomIndex);
}
BlockPositions.SetPixels(PositionPixels);
BlockPositions.Apply();
BlockColours.SetPixels(ColourPixels);
BlockColours.Apply();
}
void AddBlock(Bounds bounds, List <Color> NewPositionData, List <Color> NewColourData)
{
if (NewPositionData.Count == 0)
{
return;
}
// auto split
while (NewPositionData.Count > BlockPointSplit)
{
// pop top and add
var TopPositionData = NewPositionData.GetRange(0, BlockPointSplit);
var TopColourData = NewColourData.GetRange(0, BlockPointSplit);
NewPositionData.RemoveRange(0, BlockPointSplit);
NewColourData.RemoveRange(0, BlockPointSplit);
AddBlock(bounds, TopPositionData, TopColourData);
}
GrowData(NewPositionData.Count);
var Block = new TTexturePointBlock();
Block.DataTextureIndexOffset = GetUsedPointCount();
Block.BoundingBox = bounds;
// grab current data to inject into
var PositionsWritten = InsertPixels(BlockPositions, NewPositionData, Block.DataTextureIndexOffset);
var ColoursWritten = InsertPixels(BlockColours, NewColourData, Block.DataTextureIndexOffset);
if (PositionsWritten != ColoursWritten)
{
throw new System.Exception("Expected positonswritten(" + PositionsWritten + ") to match colours written (" + ColoursWritten + ")");
}
Block.PointCount = PositionsWritten;
Blocks.Add(Block);
}
