1. Epic GamesDeveloper
  3. TMeshQueries

TMeshQueries

API > API/Runtime > API/Runtime/GeometryCore

References

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

Syntax

template<class TriangleMeshType>  
class TMeshQueries

Constructors

  Type Name Description
Public function    

Functions

  Type Name Description
Public function Static double

AverageEdgeLength ( const TriangleMeshType& Mesh
)

 Compute the mean edge length for the given mesh.
Public function Static void

EdgeLengthStats ( const TriangleMeshType& Mesh,
double& MinEdgeLength,
double& MaxEdgeLength,
double& AverageEdgeLength,
int NumSamples
)

 Compute the min, max, and mean edge lengths for the given mesh.
Public function Static void

EdgeLengthStatsFromEdges ( const TriangleMeshType& Mesh,
const TArray< int >& Edges,
double& MinEdgeLength,
double& MaxEdgeLength,
double& AverageEdgeLength
)

 Given a mesh and a subset of mesh edges, compute the min, max, and mean edge lengths.
Public function Static void

ExpandVertexSelectionToNeighbors ( const TriangleMeshType& Mesh,
const TArray< int32 >& Selection,
TArray< int32 >& ExpandedSelection,
TMap< int32, int32 >& VIDToExpandedSelectionIdx
)

 Expand selection of vertices with one-ring neighbors.
Public function Static int

FindHitTriangle_LinearSearch ( const TriangleMeshType& Mesh,
const FRay3d& Ray
)

 Brute force search for nearest triangle intersection
Public function Static void

FindHitTriangles_LinearSearch ( const TriangleMeshType& Mesh,
const FRay3d& Ray,
TArray< TPair< float, int > >& SortedHitTriangles
)

 Brute force search for all triangle intersections, sorted
Public function Static FIndex2i

FindIntersectingTriangles_LinearSearch ( const TriangleMeshType& Mesh1,
const TriangleMeshType& Mesh2
)

 Brute force search for any intersecting triangles on two meshes
Public function Static FVector3d

FindNearestPoint_LinearSearch ( const TriangleMeshType& Mesh,
const FVector3d& P
)

  
Public function Static int

FindNearestTriangle_LinearSearch ( const TriangleMeshType& Mesh,
const FVector3d& P
)

 Brute force search for nearest triangle to Point
Public function Static void

GetAllEdgeLengths ( const TriangleMeshType& Mesh,
TArray< double >& Lengths,
double& TotalLength
)

 Compute the length for each edge and return the result as an array of Mesh.MaxEdgeID() size.
Public function Static FAxisAlignedBox3d

GetBounds ( const TriangleMeshType& Mesh
)

  
Public function Static FVector3d

GetMeshVerticesCentroid ( const TriangleMeshType& Mesh
)

 Get the average of the mesh vertices.
Public function Static FAxisAlignedBox3d

GetTrianglesBounds ( const TriangleMeshType& Mesh,
const EnumerableTriListType& Triangles,
const FTransform& Transform
)

  
Public function Static FAxisAlignedBox3d

GetTriBounds ( const TriangleMeshType& Mesh,
int TID
)

  
Public function Static FVector3d

GetTriCentroid ( const TriangleMeshType& Mesh,
int TriIdx
)

 Compute triangle centroid
Public function Static void

GetTriNormalAreaCentroid ( const TriangleMeshType& Mesh,
int TriIdx,
FVector3d& Normal,
double& Area,
FVector3d& Centroid
)

 Compute the normal, area, and centroid of a triangle all together
Public function Static TArray< int32 >

GetVertexSelectedTriangles ( const TriangleMeshType& Mesh,
const TArray< int32 >& Vertices
)

 Get triangles that contain at least on vertex in the Vertices array.
Public function Static FVector3d

GetVertexWeightsOnTriangle ( const TriangleMeshType& Mesh,
int TriID,
double TriArea,
bool bWeightByArea,
bool bWeightByAngle
)

 Retrieve the area and/or angle weights for each vertex of a triangle.
Public function Static FAxisAlignedBox3d

GetVerticesBounds ( const TriangleMeshType& Mesh,
const EnumerableTriListType& Vertices,
const FTransform& Transform
)

  
Public function Static FVector2d

GetVolumeArea ( const TriangleMeshType& Mesh,
const TArray< int >& TriIndices
)

  
Public function Static FVector2d

GetVolumeArea ( const TriangleMeshType& Mesh
)

  
Public function Static FVector2d

GetVolumeAreaCenter ( const TriangleMeshType& Mesh,
FVector3d& OutCenterOfMass
)

  
Public function Static double

GetVolumeNonWatertight ( const TriangleMeshType& Mesh,
double DimScaleFactor
)

 Get the volume of a mesh using a method that is more robust to inputs with holes
Public function Static double

HausdorffDistance ( const TriangleMeshType& MeshA,
const MeshSpatialType& SpatialB
)

 Compute all vertex-to-surface distances in parallel.
Public function Static double

HausdorffDistanceSerial ( const TriangleMeshType& MeshA,
const MeshSpatialType& SpatialB
)

 Compute all distances in serial, then a serial raw loop to find max.
Public function Static double

MaxEdgeLength ( const TriangleMeshType& Mesh
)

 Compute the longest edge length for the given mesh.
Public function Static void

MeshDistanceStatistics ( const TriangleMeshType& MeshA,
const MeshSpatialType& SpatialB,
const TriangleMeshType* MeshB,
const MeshSpatialType* SpatialA,
bool bSymmetric,
double& MaxDistance,
double& MinDistance,
double& AverageDistance,
double& RootMeanSqrDeviation
)

 Compute various statistics on distances between two meshes
Public function Static double

MinEdgeLength ( const TriangleMeshType& Mesh
)

 Compute the shortest edge length for the given mesh.
Public function Static FIntrRay3Triangle3d

RayTriangleIntersection ( const TriangleMeshType& Mesh,
int TriIdx,
const FRay3d& Ray
)

 Convenience function to construct a IntrRay3Triangle3 object for a Mesh triangle
Public function Static double

TotalEdgeLength ( const TriangleMeshType& Mesh,
const TArray< int >& Edges
)

 Given a mesh and a subset of mesh edges, compute the total length of all the edges.
Public function Static FDistPoint3Triangle3d

TriangleDistance ( const TriangleMeshType& Mesh,
int TriIdx,
FVector3d Point
)

 Construct a DistPoint3Triangle3 object for a Mesh triangle
Public function Static FIntrRay3Triangle3d

TriangleIntersection ( const TriangleMeshType& Mesh,
int TriIdx,
const FRay3d& Ray
)

 Convenience function to construct a IntrRay3Triangle3 object for a Mesh triangle
Public function Static double

TriDistanceSqr ( const TriangleMeshType& Mesh,
int TriIdx,
const FVector3d& Point
)

 Compute distance from Point to triangle in Mesh, with minimal extra objects/etc
Public function Static double

TwoSidedHausdorffDistance ( const TriangleMeshType& MeshA,
const MeshSpatialType& SpatialA,
const TriangleMeshType& MeshB,
const MeshSpatialType& SpatialB
)

 Because Hausdorff distance is not symmetric, we compute the maximum of the distances between two surfaces.
Public function Static double

TwoSidedHausdorffDistanceSerial ( const TriangleMeshType& MeshA,
const MeshSpatialType& SpatialA,
const TriangleMeshType& MeshB,
const MeshSpatialType& SpatialB
)

  
Public function Static void

VertexToSurfaceDistances ( const TriangleMeshType& MeshA,
const MeshSpatialType& SpatialB,
TArray< double >& Distances
)

 For each vertex on MeshA, compute the distance to the nearest point on the surface contained in SpatialB.
Public function Static void

VertexToSurfaceDistancesSerial ( const TriangleMeshType& MeshA,
const MeshSpatialType& SpatialB,
TArray< double >& Distances
)

 Compute all vertex-to-surface distances in serial. Should only be used for debugging the parallel version above!

Ask questions and help your peers Developer Forums

Write your own tutorials or read those from others Learning Library

On this page