private void ReadOctreeLeaf(Stream stream, ChunkHeader header, ref bool isOldFormat, MyStorageDataTypeEnum dataType, out UInt64 key, out MyMicroOctreeLeaf contentLeaf)
{
Debug.Assert(
header.ChunkType == ChunkTypeEnum.ContentLeafOctree ||
header.ChunkType == ChunkTypeEnum.MaterialLeafOctree);
MyCellCoord cellCoord = new MyCellCoord();
if (header.Version <= VERSION_OCTREE_LEAVES_32BIT_KEY)
{
UInt32 oldKey = stream.ReadUInt32();
cellCoord.SetUnpack(oldKey);
key = cellCoord.PackId64();
header.Size -= sizeof(UInt32);
isOldFormat = true;
}
else
{
Debug.Assert(header.Version == CURRENT_VERSION_OCTREE_LEAVES);
key = stream.ReadUInt64();
cellCoord.SetUnpack(key);
header.Size -= sizeof(UInt64);
}
contentLeaf = new MyMicroOctreeLeaf(dataType, LeafLodCount, cellCoord.CoordInLod << (cellCoord.Lod + LeafLodCount));
contentLeaf.ReadFrom(header, stream);
}
private static void WriteRange(
ref WriteRangeArgs args,
byte defaultData,
int lodIdx,
Vector3I lodCoord,
ref Vector3I min,
ref Vector3I max)
{
MyOctreeNode node = new MyOctreeNode();
{
MyCellCoord leaf = new MyCellCoord(lodIdx - LeafLodCount, ref lodCoord);
var leafKey = leaf.PackId64();
if (args.Leaves.ContainsKey(leafKey))
{
args.Leaves.Remove(leafKey);
var childBase = lodCoord << 1;
Vector3I childOffset;
MyCellCoord child = new MyCellCoord();
child.Lod = leaf.Lod - 1;
var leafSize = LeafSizeInVoxels << child.Lod;
for (int i = 0; i < MyOctreeNode.CHILD_COUNT; ++i)
{
ComputeChildCoord(i, out childOffset);
child.CoordInLod = childBase + childOffset;
var childCopy = child;
childCopy.Lod += LeafLodCount;
IMyOctreeLeafNode octreeLeaf = new MyProviderLeaf(args.Provider, args.DataType, ref childCopy);
args.Leaves.Add(child.PackId64(), octreeLeaf);
node.SetChild(i, true);
node.SetData(i, octreeLeaf.GetFilteredValue());
}
}
else
{
leaf.Lod -= 1; // changes to node coord instead of leaf coord
var nodeKey = leaf.PackId64();
if (!args.Nodes.TryGetValue(nodeKey, out node))
{
for (int i = 0; i < MyOctreeNode.CHILD_COUNT; ++i)
node.SetData(i, defaultData);
}
}
}
if (lodIdx == (LeafLodCount + 1))
{
MyCellCoord child = new MyCellCoord();
Vector3I childBase = lodCoord << 1;
Vector3I minInLod = min >> LeafLodCount;
Vector3I maxInLod = max >> LeafLodCount;
Vector3I leafSizeMinusOne = new Vector3I(LeafSizeInVoxels - 1);
Vector3I childOffset;
for (int i = 0; i < MyOctreeNode.CHILD_COUNT; ++i)
{
ComputeChildCoord(i, out childOffset);
child.CoordInLod = childBase + childOffset;
if (!child.CoordInLod.IsInsideInclusive(ref minInLod, ref maxInLod))
continue;
var childMin = child.CoordInLod << LeafLodCount;
var childMax = childMin + LeafSizeInVoxels - 1;
Vector3I.Max(ref childMin, ref min, out childMin);
Vector3I.Min(ref childMax, ref max, out childMax);
var readOffset = childMin - min;
IMyOctreeLeafNode leaf;
var leafKey = child.PackId64();
var startInChild = childMin - (child.CoordInLod << LeafLodCount);
var endInChild = childMax - (child.CoordInLod << LeafLodCount);
args.Leaves.TryGetValue(leafKey, out leaf);
byte uniformValue;
bool uniformLeaf;
{
// ensure leaf exists and is writable
// the only writable leaf type is MicroOctree at this point
byte childDefaultData = node.GetData(i);
if (leaf == null)
{
var octree = new MyMicroOctreeLeaf(args.DataType, LeafLodCount, child.CoordInLod << (child.Lod + LeafLodCount));
octree.BuildFrom(childDefaultData);
leaf = octree;
}
if (leaf.ReadOnly)
{
var rangeEnd = new Vector3I(LeafSizeInVoxels - 1);
m_temporaryCache.Resize(Vector3I.Zero, rangeEnd);
leaf.ReadRange(m_temporaryCache, ref Vector3I.Zero, 0, ref Vector3I.Zero, ref rangeEnd);
var inCell = startInChild;
for (var it2 = new Vector3I.RangeIterator(ref startInChild, ref endInChild);
it2.IsValid(); it2.GetNext(out inCell))
{
var read = readOffset + (inCell - startInChild);
m_temporaryCache.Set(args.DataType, ref inCell, args.Source.Get(args.DataType, ref read));
}
var octree = new MyMicroOctreeLeaf(args.DataType, LeafLodCount, child.CoordInLod << (child.Lod + LeafLodCount));
octree.BuildFrom(m_temporaryCache);
leaf = octree;
}
else
{
leaf.WriteRange(args.Source, ref readOffset, ref startInChild, ref endInChild);
}
uniformLeaf = ((MyMicroOctreeLeaf)leaf).TryGetUniformValue(out uniformValue);
}
if (!uniformLeaf)
{
args.Leaves[leafKey] = leaf;
node.SetChild(i, true);
}
else
{
args.Leaves.Remove(leafKey);
node.SetChild(i, false);
}
node.SetData(i, leaf.GetFilteredValue());
}
args.Nodes[new MyCellCoord(lodIdx - 1 - LeafLodCount, ref lodCoord).PackId64()] = node;
}
else
{
MyCellCoord child = new MyCellCoord();
child.Lod = lodIdx - 2 - LeafLodCount;
var childBase = lodCoord << 1;
Vector3I childOffset;
var minInChild = (min >> (lodIdx-1)) - childBase;
var maxInChild = (max >> (lodIdx-1)) - childBase;
for (int i = 0; i < MyOctreeNode.CHILD_COUNT; ++i)
{
ComputeChildCoord(i, out childOffset);
if (!childOffset.IsInsideInclusive(ref minInChild, ref maxInChild))
continue;
child.CoordInLod = childBase + childOffset;
WriteRange(ref args, node.GetData(i), lodIdx - 1, child.CoordInLod, ref min, ref max);
var childKey = child.PackId64();
var childNode = args.Nodes[childKey];
if (!childNode.HasChildren && childNode.AllDataSame())
{
node.SetChild(i, false);
node.SetData(i, childNode.GetData(0));
args.Nodes.Remove(childKey);
}
else
{
node.SetChild(i, true);
node.SetData(i, childNode.ComputeFilteredValue(args.DataFilter));
}
}
args.Nodes[new MyCellCoord(lodIdx - 1 - LeafLodCount, ref lodCoord).PackId64()] = node;
}
}
private static void WriteRange(
ref WriteRangeArgs args,
byte defaultData,
int lodIdx,
Vector3I lodCoord,
ref Vector3I min,
ref Vector3I max)
{
MyOctreeNode node = new MyOctreeNode();
{
MyCellCoord leaf = new MyCellCoord(lodIdx - LeafLodCount, ref lodCoord);
var leafKey = leaf.PackId64();
if (args.Leaves.ContainsKey(leafKey))
{
args.Leaves.Remove(leafKey);
var childBase = lodCoord << 1;
Vector3I childOffset;
MyCellCoord child = new MyCellCoord();
child.Lod = leaf.Lod - 1;
var leafSize = LeafSizeInVoxels << child.Lod;
for (int i = 0; i < MyOctreeNode.CHILD_COUNT; ++i)
{
ComputeChildCoord(i, out childOffset);
child.CoordInLod = childBase + childOffset;
var childCopy = child;
childCopy.Lod += LeafLodCount;
IMyOctreeLeafNode octreeLeaf = new MyProviderLeaf(args.Provider, args.DataType, ref childCopy);
args.Leaves.Add(child.PackId64(), octreeLeaf);
node.SetChild(i, true);
node.SetData(i, octreeLeaf.GetFilteredValue());
}
}
else
{
leaf.Lod -= 1; // changes to node coord instead of leaf coord
var nodeKey = leaf.PackId64();
if (!args.Nodes.TryGetValue(nodeKey, out node))
{
for (int i = 0; i < MyOctreeNode.CHILD_COUNT; ++i)
{
node.SetData(i, defaultData);
}
}
}
}
if (lodIdx == (LeafLodCount + 1))
{
MyCellCoord child = new MyCellCoord();
Vector3I childBase = lodCoord << 1;
Vector3I minInLod = min >> LeafLodCount;
Vector3I maxInLod = max >> LeafLodCount;
Vector3I leafSizeMinusOne = new Vector3I(LeafSizeInVoxels - 1);
Vector3I childOffset;
for (int i = 0; i < MyOctreeNode.CHILD_COUNT; ++i)
{
ComputeChildCoord(i, out childOffset);
child.CoordInLod = childBase + childOffset;
if (!child.CoordInLod.IsInsideInclusive(ref minInLod, ref maxInLod))
{
continue;
}
var childMin = child.CoordInLod << LeafLodCount;
var childMax = childMin + LeafSizeInVoxels - 1;
Vector3I.Max(ref childMin, ref min, out childMin);
Vector3I.Min(ref childMax, ref max, out childMax);
var readOffset = childMin - min;
IMyOctreeLeafNode leaf;
var leafKey = child.PackId64();
var startInChild = childMin - (child.CoordInLod << LeafLodCount);
var endInChild = childMax - (child.CoordInLod << LeafLodCount);
args.Leaves.TryGetValue(leafKey, out leaf);
byte uniformValue;
bool uniformLeaf;
{
// ensure leaf exists and is writable
// the only writable leaf type is MicroOctree at this point
byte childDefaultData = node.GetData(i);
if (leaf == null)
{
var octree = new MyMicroOctreeLeaf(args.DataType, LeafLodCount, child.CoordInLod << (child.Lod + LeafLodCount));
octree.BuildFrom(childDefaultData);
leaf = octree;
}
if (leaf.ReadOnly)
{
var rangeEnd = new Vector3I(LeafSizeInVoxels - 1);
m_temporaryCache.Resize(Vector3I.Zero, rangeEnd);
leaf.ReadRange(m_temporaryCache, ref Vector3I.Zero, 0, ref Vector3I.Zero, ref rangeEnd);
var inCell = startInChild;
for (var it2 = new Vector3I.RangeIterator(ref startInChild, ref endInChild);
it2.IsValid(); it2.GetNext(out inCell))
{
var read = readOffset + (inCell - startInChild);
m_temporaryCache.Set(args.DataType, ref inCell, args.Source.Get(args.DataType, ref read));
}
var octree = new MyMicroOctreeLeaf(args.DataType, LeafLodCount, child.CoordInLod << (child.Lod + LeafLodCount));
octree.BuildFrom(m_temporaryCache);
leaf = octree;
}
else
{
leaf.WriteRange(args.Source, ref readOffset, ref startInChild, ref endInChild);
}
uniformLeaf = ((MyMicroOctreeLeaf)leaf).TryGetUniformValue(out uniformValue);
}
if (!uniformLeaf)
{
args.Leaves[leafKey] = leaf;
node.SetChild(i, true);
}
else
{
args.Leaves.Remove(leafKey);
node.SetChild(i, false);
}
node.SetData(i, leaf.GetFilteredValue());
}
args.Nodes[new MyCellCoord(lodIdx - 1 - LeafLodCount, ref lodCoord).PackId64()] = node;
}
else
{
MyCellCoord child = new MyCellCoord();
child.Lod = lodIdx - 2 - LeafLodCount;
var childBase = lodCoord << 1;
Vector3I childOffset;
var minInChild = (min >> (lodIdx - 1)) - childBase;
var maxInChild = (max >> (lodIdx - 1)) - childBase;
for (int i = 0; i < MyOctreeNode.CHILD_COUNT; ++i)
{
ComputeChildCoord(i, out childOffset);
if (!childOffset.IsInsideInclusive(ref minInChild, ref maxInChild))
{
continue;
}
child.CoordInLod = childBase + childOffset;
WriteRange(ref args, node.GetData(i), lodIdx - 1, child.CoordInLod, ref min, ref max);
var childKey = child.PackId64();
var childNode = args.Nodes[childKey];
if (!childNode.HasChildren && childNode.AllDataSame())
{
node.SetChild(i, false);
node.SetData(i, childNode.GetData(0));
args.Nodes.Remove(childKey);
}
else
{
node.SetChild(i, true);
node.SetData(i, childNode.ComputeFilteredValue(args.DataFilter));
}
}
args.Nodes[new MyCellCoord(lodIdx - 1 - LeafLodCount, ref lodCoord).PackId64()] = node;
}
}