PolyfaceQuery Class

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

Methods

Name Description
announceSweepLinestringToConvexPolyfaceXY(linestringPoints: GrowableXYZArray, polyface: Polyface, announce: AnnounceDrapePanel): any Static Find segments (within the linestring) which project to facets.  
boundaryEdges(source: Polyface, includeDanglers: boolean = true, includeMismatch: boolean = true, includeNull: boolean = true): CurveCollection | undefined Static Test if the facets in source occur in perfectly mated pairs, as is required for a closed manifold volume.  
computePrincipalAreaMoments(source: Polyface): MomentData | undefined Static Compute area moments for the mesh.  
computePrincipalVolumeMoments(source: Polyface): MomentData | undefined Static Compute area moments for the mesh.  
indexedPolyfaceToLoops(polyface: Polyface): BagOfCurves Static Create a linestring loop for each facet of the polyface.  
isPolyfaceClosedByEdgePairing(source: Polyface): boolean Static Test if the facets in source occur in perfectly mated pairs, as is required for a closed manifold volume.  
sumFacetAreas(source: Polyface | PolyfaceVisitor): number Static Return the sum of all facets areas.  
sumFacetSecondAreaMomentProducts(source: Polyface | PolyfaceVisitor, 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: Polyface | PolyfaceVisitor, origin: Point3d): Matrix4d Static Return the inertia products [xx,xy,xz,xw, yw, etc] integrated over all tetrahedral volumes from origin  
sumTetrahedralVolumes(source: Polyface | PolyfaceVisitor, origin?: Point3d): number Static sum volumes of tetrahedra from origin to all facets.  
sweepLinestringToFacetsXYReturnChains(linestringPoints: GrowableXYZArray, polyface: Polyface): LineString3d[] Static Find segments (within the linestring) which project to facets.  
sweepLinestringToFacetsXYReturnLines(linestringPoints: GrowableXYZArray, polyface: Polyface): LineSegment3d[] Static Find segments (within the linestring) which project to facets.  
sweepLinestringToFacetsXYreturnSweptFacets(linestringPoints: GrowableXYZArray, polyface: Polyface): Polyface Static Find segments (within the linestring) which project to facets.  
visitorToLoop(visitor: PolyfaceVisitor): Loop Static copy the points from a visitor into a Linestring3d in a Loop object  

Defined in

Last Updated: 20 September, 2019