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  3. TDynamicVerticesOctree3

TDynamicVerticesOctree3

[TDynamicVerticesOctree3](API\Runtime\GeometryCore\DynamicMesh\TDynamicVerticesOctree3) is an extension of [FSparseDynamicPointOctree3](API\Runtime\GeometryCore\Spatial\FSparseDynamicPointOctree3) for the vertices of a FDynamicXYZ3 instance (eg [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3), [TDynamicPointSet3](API\Runtime\GeometryCore\DynamicMesh\TDynamicPointSet3), [FDynamicGraph](API\Runtime\GeometryCore\Curve\FDynamicGraph), etc) This extension does several things: 1) provides a simplified API based on vertex IDs to various Octree functions 2) tracks ModifiedBounds box of modified areas The template expansion requires that FDynamicXYZ3 has the following API: 1) a function int MaxVertexID() that returns the maximum vertex ID/index 2) a function bool IsVertex(int) that returns true if the index is valid 3) a function FVector3d GetVertex(int index) that returns the position of a vertex 4) a function FAxisAlignedBox3d GetBounds() that returns a bounding-box of t

API > API/Runtime > API/Runtime/GeometryCore > API/Runtime/GeometryCore/DynamicMesh

Inheritance Hierarchy

References

   
Module GeometryCore
Header /Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicVerticesOctree3.h
Include #include "DynamicMesh/DynamicVerticesOctree3.h"

Syntax

template<typename SourceType>  
class TDynamicVerticesOctree3 : public UE::Geometry::FSparseDynamicPointOctree3

Remarks

TDynamicVerticesOctree3 is an extension of FSparseDynamicPointOctree3 for the vertices of a FDynamicXYZ3 instance (eg FDynamicMesh3, TDynamicPointSet3, FDynamicGraph, etc) This extension does several things: 1) provides a simplified API based on vertex IDs to various Octree functions 2) tracks ModifiedBounds box of modified areas

The template expansion requires that FDynamicXYZ3 has the following API: 1) a function int MaxVertexID() that returns the maximum vertex ID/index 2) a function bool IsVertex(int) that returns true if the index is valid 3) a function FVector3d GetVertex(int index) that returns the position of a vertex 4) a function FAxisAlignedBox3d GetBounds() that returns a bounding-box of the point set

Variables

  Type Name Description
Public variable double HitSphereRadius  
Public variable FAxisAlignedBox3d ModifiedBounds Bounding box of vertices that have been inserted/removed since last clear
Public variable const SourceType * VertexSource Potential optimizations:

Functions

  Type Name Description
Public function Const void

CheckValidity ( EValidityCheckFailMode FailMode,
bool bVerbose,
bool bFailOnMissingPoints
)

 Check that the Octree is internally valid
Public function Const int32

FindNearestHitVertex ( const FRay3d& Ray,
double MaxDistance
)

 Find the nearest triangle of the VertexSource that is hit by the ray
Public function void

Initialize ( const SourceType* VertexSourceIn,
bool bDynamicExpand
)

 Add all vertices of MeshIn to the octree
Public function void

InsertVertex ( int32 VertexID
)

 Insert a triangle into the tree
Public function void

InsertVertices ( const TArray< int >& Vertices
)

 Insert a list of vertices into the tree
Public function void

InsertVertices ( const TSet< int >& Vertices
)

 Insert a set of vertices into the tree
Public function void

NotifyPendingModification ( int VertexID
)

 Include the current bounds of a triangle in the ModifiedBounds box
Public function void

NotifyPendingModification ( const TSet< int >& Vertices
)

 Include the current bounds of a set of vertices in the ModifiedBounds box
Public function void

ReinsertVertices ( const TSet< int >& Vertices
)

 Reinsert a set of vertices into the tree
Public function bool

RemovePoint ( int32 VertexID
)

 Remove a triangle from the tree
Public function void

RemoveVertices ( const TArray< int >& Vertices
)

 Remove a list of vertices from the tree
Public function void

RemoveVertices ( const TSet< int >& Vertices
)

 Remove a set of vertices from the tree
Public function void Reset the internal ModifiedBounds box that tracks modified triangle bounds

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