TMeshQueries

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References

Module

GeometricObjects

Header

/Engine/Plugins/Experimental/GeometryProcessing/Source/GeometricObjects/Public/MeshQueries.h

Include

#include "MeshQueries.h"

Syntax

template<class TriangleMeshType>
class TMeshQueries

Constructors

Name Description

Public function

TMeshQueries()

Functions

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

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 >>& Sort...
)

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

FAxisAligned...

 

GetBounds

(
    const TriangleMeshType& Mesh
)

Public function Static

FVector3d

 

GetMeshVerticesCentroid

(
    const TriangleMeshType& Mesh
)

Get the average of the mesh vertices.

Public function Static

FAxisAligned...

 

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

FVector2d

 

GetVolumeArea

(
    const TriangleMeshType& Mesh
)

Public function Static

FVector2d

 

GetVolumeArea

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

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

double

 

MinEdgeLength

(
    const TriangleMeshType& Mesh
)

Compute the shortest edge length for the given mesh.

Public function Static

FIntrRay3Tri...

 

RayTriangleIntersection

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

Convenience function to construct a IntrRay3Triangle3 object for a Mesh triangle

Public function Static

FDistPoint3T...

 

TriangleDistance

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

Construct a DistPoint3Triangle3 object for a Mesh triangle

Public function Static

FIntrRay3Tri...

 

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!
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