API Reference › core-geometry› Polyface › PolyfaceQuery

PolyfaceQuery Class

PolyfaceQuery is a static class whose methods implement queries on a Polyface or PolyfaceVisitor provided as a parameter to each method.

Methods

Name Description
constructor(): PolyfaceQuery    
announceBoundaryChainsAsLineString3d(mesh: PolyfaceVisitor | Polyface, announceChain: (points: LineString3d) => void): void Static Search for edges with only 1 adjacent facet.  
announceBoundaryEdges(source: PolyfaceVisitor | Polyface, announceEdge: (pointA: Point3d, pointB: Point3d, indexA: number, indexB: number, facetIndex: number) => void, includeTypical: booleantrue, includeMismatch: booleantrue, includeNull: booleantrue): void Static Test if the facets in source occur in perfectly mated pairs, as is required for a closed manifold volume.  
announceDuplicateFacetIndices(polyface: Polyface, announceCluster: (clusterFacetIndices: number[]) => void): void Static Announce facet duplicates.  
announceSilhouetteEdges(source: PolyfaceVisitor | Polyface, announce: (pointA: Point3d, pointB: Point3d, vertexIndexA: number, vertexIndexB: number, facetIndex: number) => void, vectorToEye: Vector3d, sideAngle: Angle...): void Static Invoke the callback on each manifold edge whose adjacent facet normals form vectorToEye dot products  
announceSweepLinestringToConvexPolyfaceXY(linestringPoints: GrowableXYZArray, polyface: Polyface, announce: AnnounceDrapePanel): any Static Find segments (within the linestring) which project to facets.  
areFacetsConvex(source: PolyfaceVisitor | Polyface): boolean Static Determine whether all facets are convex.  
asyncSweepLinestringToFacetsXYReturnChains(linestringPoints: GrowableXYZArray, polyface: Polyface): Promise<LineString3d[]> Static Find segments (within the linestring) which project to facets.  
boundaryEdges(source: PolyfaceVisitor | Polyface, includeTypical: booleantrue, includeMismatch: booleantrue, includeNull: booleantrue): undefined | CurveCollection Static Construct a CurveCollection containing boundary edges.  
boundaryOfVisibleSubset(polyface: IndexedPolyface, visibilitySelect: "0" | "1" | "2", vectorToEye: Vector3d, sideAngleTolerance: Angle...): undefined | CurveCollection Static Return the boundary of facets that are facing the eye.  
buildAverageNormals(polyface: IndexedPolyface, toleranceAngle: Angle...): void Static * At each vertex of the mesh:  
buildPerFaceNormals(polyface: IndexedPolyface): void Static Set up indexed normals with one normal in the plane of each facet of the mesh.  
cloneByFacetDuplication(source: Polyface, includeSingletons: boolean, clusterSelector: DuplicateFacetClusterSelector): Polyface Static Return a new facet set from the source facets, specifying how to copy duplicate facets.  
cloneFiltered(source: PolyfaceVisitor | Polyface, filter: (visitor: PolyfaceVisitor) => boolean): IndexedPolyface Static Clone facets that pass a filter function.  
cloneOffset(source: IndexedPolyface, signedOffsetDistance: number, offsetOptions: OffsetMeshOptions...): IndexedPolyface Static Offset the faces of the mesh.  
clonePartitions(polyface: PolyfaceVisitor | Polyface, partitions: number[][]): IndexedPolyface[] Static Clone the facets in each partition to a separate polyface.  
cloneWithColinearEdgeFixup(polyface: Polyface): Polyface Static Clone the facets, removing points that are simply within colinear edges.  
cloneWithDanglingEdgesRemoved(source: PolyfaceVisitor | Polyface): IndexedPolyface Static Clone the facets with in-facet dangling edges removed.  
cloneWithMaximalPlanarFacets(mesh: PolyfaceVisitor | Polyface, maxSmoothEdgeAngle?: Angle): IndexedPolyface Static Return a mesh with  
cloneWithTVertexFixup(polyface: Polyface): IndexedPolyface Static Clone the facets, inserting vertices (within edges) where points not part of each facet's vertex indices  
collectBoundaryEdges(source: PolyfaceVisitor | Polyface, includeTypical: booleantrue, includeMismatch: booleantrue, includeNull: booleantrue): undefined | AnyChain Static Collect boundary edges.  
collectDuplicateFacetIndices(polyface: Polyface, includeSingletons: booleanfalse): number[][] Static Collect facet duplicates.  
collectEdgesByDihedralAngle(mesh: PolyfaceVisitor | Polyface, maxSmoothEdgeAngle?: Angle, sharpEdges: booleanfalse): SortableEdgeCluster[] Static Return manifold edge pairs whose dihedral angle is bounded by the given angle.  
collectRangeLengthData(polyface: PolyfaceVisitor | Polyface): RangeLengthData Static Examine ranges of facets.  
collectSilhouetteEdges(source: PolyfaceVisitor | Polyface, vectorToEye: Vector3d, sideAngle: Angle...): undefined | AnyChain Static Collect manifold edges whose adjacent facet normals form vectorToEye dot products with opposite sign.  
computeFacetUnitNormal(visitor: PolyfaceVisitor, facetIndex: number, result?: Vector3d): undefined | Vector3d Static Try to compute a unit normal for a facet accessible through a visitor.  
computePrincipalAreaMoments(source: Polyface): undefined | MomentData Static Compute area moments for the mesh.  
computePrincipalVolumeMoments(source: Polyface): undefined | MomentData Static Compute area moments for the mesh.  
createIndexedEdges(polyface: PolyfaceVisitor | Polyface): IndexedEdgeMatcher Static Load all half edges from a mesh to an IndexedEdgeMatcher.  
dihedralAngleSummary(source: Polyface, ignoreBoundaries: booleanfalse): number Static Compute a number summarizing the dihedral angles in the mesh.  
fillSimpleHoles(mesh: PolyfaceVisitor | Polyface, options: HoleFillOptions, unfilledChains?: LineString3d[]): undefined | IndexedPolyface Static Return a mesh with "some" holes filled in with new facets.  
getSingleEdgeVisibility(polyface: IndexedPolyface, facetIndex: number, vertexIndex: number): undefined | boolean Static Get the visibility of a particular edge of a particular facet.  
indexedPolyfaceToLoops(polyface: Polyface): BagOfCurves Static Create a linestring loop for each facet of the polyface.  
intersectRay3d(visitor: PolyfaceVisitor | Polyface, ray: Ray3d, options?: FacetIntersectOptions): undefined | FacetLocationDetail Static Search facets for the first one that intersects the infinite line.  
isConvexByDihedralAngleCount(source: Polyface, ignoreBoundaries: booleanfalse): boolean Static Test for convex volume by dihedral angle tests on all edges.  
isPolyfaceClosedByEdgePairing(source: Polyface): boolean Static Test if the facets in source occur in perfectly mated pairs, as is required for a closed manifold volume.  
isPolyfaceManifold(source: Polyface, allowSimpleBoundaries: booleanfalse): boolean Static Test edges pairing in source mesh.  
markAllEdgeVisibility(mesh: IndexedPolyface, value: boolean): void Static * Mark all edge visibilities in the IndexedPolyface.  
markPairedEdgesInvisible(mesh: IndexedPolyface, sharpEdgeAngle?: Angle): void Static Make paired edges invisible.  
partitionFacetIndicesByEdgeConnectedComponent(polyface: PolyfaceVisitor | Polyface, stopAtVisibleEdges: booleanfalse): number[][] Static Partition the facet set into connected components.  
partitionFacetIndicesByVertexConnectedComponent(polyface: PolyfaceVisitor | Polyface): number[][] Static Search the facets for facet subsets that are connected with at least vertex contact.  
partitionFacetIndicesByVisibilityVector(polyface: PolyfaceVisitor | Polyface, vectorToEye: Vector3d, sideAngleTolerance: Angle): number[][] Static * Examine the normal orientation for each faces.  
reorientVertexOrderAroundFacetsForConsistentOrientation(mesh: IndexedPolyface): boolean Static Examine adjacent facet orientations throughout the mesh.  
setSingleEdgeVisibility(polyface: IndexedPolyface, facetIndex: number, vertexIndex: number, value: boolean): void Static Set the visibility of a particular edge of a particular facet.  
sumFacetAreas(source: PolyfaceVisitor | Polyface, vectorToEye?: Vector3d): number Static Sum all facet areas.  
sumFacetSecondAreaMomentProducts(source: PolyfaceVisitor | Polyface, origin: Point3d): Matrix4d Static Return the inertia products [xx,xy,xz,xw,yw, etc] integrated over all all facets as viewed from origin.  
sumFacetSecondVolumeMomentProducts(source: PolyfaceVisitor | Polyface, origin: Point3d): Matrix4d Static Return the inertia products [xx,xy,xz,xw,yw, etc] integrated over all tetrahedral volumes from origin.  
sumTetrahedralVolumes(source: PolyfaceVisitor | Polyface, origin?: Point3d): number Static Sum volumes of tetrahedra from origin to all facets.  
sumVolumeBetweenFacetsAndPlane(source: PolyfaceVisitor | Polyface, plane: Plane3dByOriginAndUnitNormal): FacetProjectedVolumeSums Static Sum (signed) volumes between facets and a plane.  
sweepLineStringToFacets(linestringPoints: GrowableXYZArray, polyfaceOrVisitor: PolyfaceVisitor | Polyface, options?: SweepLineStringToFacetsOptions): LinearCurvePrimitive[] Static Sweep the line string to intersections with a mesh.  
sweepLineStringToFacetsXY(lineStringPoints: Point3d[] | GrowableXYZArray, polyfaceOrVisitor: PolyfaceVisitor | Polyface, searchByReadIndex: Range2dSearchInterface<number>): LineString3d[] Static Sweep the line string in the z-direction to intersections with a mesh, using a search object for speedup.  
sweepLinestringToFacetsXYReturnChains(linestringPoints: GrowableXYZArray, polyface: Polyface): LineString3d[] Static Find segments (within the linestring) which project to facets. Deprecated  
sweepLinestringToFacetsXYReturnLines(linestringPoints: GrowableXYZArray, polyface: Polyface): LineSegment3d[] Static Find segments (within the linestring) which project to facets. Deprecated  
sweepLinestringToFacetsXYreturnSweptFacets(linestringPoints: GrowableXYZArray, polyface: Polyface): Polyface Static   Deprecated  
sweepLineStringToFacetsXYReturnSweptFacets(lineStringPoints: GrowableXYZArray, polyface: Polyface): Polyface Static Find segments (within the line string) which project to facets.  
visitorClientFacetCount(source: PolyfaceVisitor | Polyface): number Static Return the facet count of the source.  
visitorClientPointCount(source: PolyfaceVisitor | Polyface): number Static Return the point count of the source.  
visitorToLoop(visitor: PolyfaceVisitor): Loop Static Copy the points from a visitor into a linestring loop.  

Defined in

Last Updated: 24 June, 2025