/// <param name="level">Selects hierarchy Level the kdtree is built of (-1 shouldn't be used, use BuildKdtreeN instead).</param>
/// <param name="progressObserver">Reports progress in increments which sum up to 1.</param>
public static void BuildKdTreeForLevel(
OpcPaths opcPaths, int level, PositionsType posType,
bool lazy = true, bool overrideExisting = false, IObserver <float> progressObserver = null,
CancellationToken cancelToken = default(CancellationToken), PatchHierarchyInfo hierarchyInfo = null,
float maxTriangleSize = float.PositiveInfinity)
{
#region Preconditions
if (hierarchyInfo == null)
{
hierarchyInfo = PatchHierarchyInfo.BuildOrLoadCache(opcPaths);
}
if (posType == PositionsType.V2dPositions && !hierarchyInfo.PatchTree.Info.Has2dData)
{
Report.Warn("KdTreeUtils: 2d KdTree needs 2d data to be able to get built.");
progressObserver.OnNext(1f);
progressObserver.OnCompleted();
return;
}
opcPaths.SetRootPatchName(hierarchyInfo.RootPatch);
var kdTreeSetPath = opcPaths.GetAggKdTreePath(level, posType);
if (!overrideExisting && StorageConfig.FileExists(kdTreeSetPath))
{
progressObserver.OnNext(1f);
progressObserver.OnCompleted();
return;
}
#endregion
hierarchyInfo.PatchTree.CreatePatchPaths(opcPaths.PatchesSubDir);
// Get geometry patchinformations for certain level with a valid boundingbox
var patchTrees = hierarchyInfo.RetrievePatchTreesOfLevel(level)
.Where(x => !x.Info.GlobalBoundingBox.IsInvalid);
IIntersectableObjectSet kdTree;
var buildFlags =
KdIntersectionTree.BuildFlags.Hierarchical |
KdIntersectionTree.BuildFlags.EmptySpaceOptimization;
// Decide lazy or eager
if (lazy)
{
kdTree = BuildLazyKdTreeSet(patchTrees, opcPaths, level, posType, overrideExisting, progressObserver, cancelToken, maxTriangleSize);
buildFlags |= KdIntersectionTree.BuildFlags.OptimalRaytracing;
}
else
{
kdTree = BuildConcreteKdTreeSet(patchTrees, opcPaths, level, posType, overrideExisting, progressObserver, cancelToken, maxTriangleSize);
buildFlags |= KdIntersectionTree.BuildFlags.MediumIntersection;
}
// Save Kd-Tree
var aggrTree = new KdIntersectionTree(kdTree, buildFlags);
aggrTree.Save(kdTreeSetPath, waitMode: WaitMode.WaitUntilFinished);
}
public static bool HasKdTreeForLevel(OpcPaths opcPaths, int level, PositionsType posType, PatchHierarchyInfo hierarchyInfo = null)
{
if (hierarchyInfo == null)
{
hierarchyInfo = PatchHierarchyInfo.BuildOrLoadCache(opcPaths);
}
opcPaths.SetRootPatchName(hierarchyInfo.RootPatch);
var kdTreeSetPath = opcPaths.GetAggKdTreePath(level, posType);
return(StorageConfig.FileExists(kdTreeSetPath));
}