API Reference > geometry-core > Polyface > IndexedPolyfaceVisitor IndexedPolyfaceVisitor Class An IndexedPolyfaceVisitor is an iterator-like object that "visits" facets of a mesh. The visitor extends a PolyfaceData class, so it can at any time hold all the data of a single facet. Extends PolyfaceData Extended by IndexedPolyfaceSubsetVisitor Implements PolyfaceVisitor Methods Name Description constructor(facets: IndexedPolyface, numWrap: number): IndexedPolyfaceVisitor Protected Constructor for facets. clearArrays(): void clear the contents of all arrays. clientAuxIndex(i: number): number Return the aux data index of vertex i within the currently loaded facet clientColorIndex(i: number): number Return the color index of vertex i within the currently loaded facet clientNormalIndex(i: number): number Return the normal index of vertex i within the currently loaded facet clientParamIndex(i: number): number Return the param index of vertex i within the currently loaded facet clientPointIndex(i: number): number Return the point index of vertex i within the currently loaded facet clientPolyface(): Polyface Return the client polyface object. currentReadIndex(): number Return the index (in the client polyface) of the current facet moveToNextFacet(): boolean Advance the iterator to a the 'next' facet in the client polyface moveToReadIndex(facetIndex: number): boolean Advance the iterator to a particular facet in the client polyface pushDataFrom(other: PolyfaceVisitor, index: number): void transfer data from a specified index of the other visitor as new data in this visitor. pushInterpolatedDataFrom(other: PolyfaceVisitor, index0: number, fraction: number, index1: number): void transfer interpolated data from the other visitor. reset(): void Reset the iterator to start at the first facet of the polyface. setNumWrap(numWrap: number): void Set the number of vertices duplicated (e.g. tryGetDistanceParameter(index: number, result?: Point2d): undefined | Point2d Attempts to extract the distance parameter for the given vertex index on the current facet tryGetNormalizedParameter(index: number, result?: Point2d): undefined | Point2d Attempts to extract the normalized parameter (0,1) for the given vertex index on the current facet. create(polyface: IndexedPolyface, numWrap: number): IndexedPolyfaceVisitor Static Create a visitor for iterating the facets of polyface, with indicated number of points to be added to each facet to produce closed point arrays Inherited methods Name Inherited from Description clone(): PolyfaceData PolyfaceData Return a depp clone. compress(): void PolyfaceData * Search for duplication of coordinates within points, normals, and params. copyNormalTo(i: number, dest: Vector3d): void PolyfaceData Copy the contents (not pointer) of normal[i] into dest. copyParamTo(i: number, dest: Point2d): void PolyfaceData Copy the contents (not pointer) of param[i] into dest. copyPointTo(i: number, dest: Point3d): void PolyfaceData Copy the contents (not pointer) of point[i] into dest. gatherIndexedData(other: PolyfaceData, index0: number, index1: number, numWrap: number): void PolyfaceData * Copy data from other to this. getColor(i: number): number PolyfaceData return indexed color getEdgeVisible(i: number): boolean PolyfaceData return indexed visibility getNormal(i: number): undefined | Vector3d PolyfaceData return indexed normal. getParam(i: number): undefined | Point2d PolyfaceData return indexed param. getPoint(i: number, out?: Point3d): undefined | Point3d PolyfaceData return indexed point. isAlmostEqual(other: PolyfaceData): boolean PolyfaceData Test for equal indices and nearly equal coordinates isAlmostEqualParamIndexUV(index: number, u: number, v: number): boolean PolyfaceData test if normal at a specified index matches uv range(result?: Range3d, transform?: Transform): Range3d PolyfaceData Return the range of the point array (optionally transformed) resizeAllDataArrays(length: number): void PolyfaceData Resize all data arrays to specified length reverseIndices(facetStartIndex?: number[]): void PolyfaceData reverse indices facet-by-facet, with the given facetStartIndex array delimiting faces. reverseIndicesSingleFacet(facetId: number, facetStartIndex: number[]): void PolyfaceData reverse indices facet-by-facet, with the given facetStartIndex array delimiting faces. reverseNormals(): void PolyfaceData Scale all the normals by -1 setTaggedNumericData(data: undefined | TaggedNumericData): void PolyfaceData set the taggedNumericData member trimAllIndexArrays(length: number): void PolyfaceData Trim all index arrays to stated length. tryTransformInPlace(transform: Transform): boolean PolyfaceData Apply transform to point and normal arrays and to auxData. isValidFacetStartIndexArray(facetStartIndex: number[]): boolean Static PolyfaceData Test if facetStartIndex is (minimally!) valid: reverseIndices<T>(facetStartIndex: number[], indices: undefined | T[], preserveStart: boolean): boolean Static PolyfaceData Reverse data in entire facet indexing arrays. reverseIndicesSingleFacet<T>(facetId: number, facetStartIndex: number[], indices: undefined | T[], preserveStart: boolean): boolean Static PolyfaceData Reverse data in entire facet indexing arrays. Properties Name Type Description numEdgesThisFacet Accessor ReadOnly number Return the number of edges in the current facet. Inherited properties Name Type Inherited from Description auxData undefined | PolyfaceAuxData PolyfaceData Auxiliary data color undefined | number[] PolyfaceData Color values. colorCount Accessor ReadOnly number PolyfaceData Get the color count colorIndex undefined | number[] PolyfaceData Indices of colors at facet vertices. edgeVisible boolean[] PolyfaceData booleans indicating visibility of corresponding edges expectedClosure Accessor number PolyfaceData boolean tag indicating if the facets are viewable from the back face FacetFaceData[] PolyfaceData Face data will remain empty until a face is specified. faceCount Accessor ReadOnly number PolyfaceData Get the number of faces.* Note that a "face" is not a facet.* A "face" is a subset of facets grouped for application purposes. indexCount Accessor ReadOnly number PolyfaceData Get the index count. Note that there is one count, and all index arrays (point, normal, param, color) must match normal undefined | GrowableXYZArray PolyfaceData Coordinates of normal vectors, packed as numbers in a contiguous array normalCount Accessor ReadOnly number PolyfaceData Get the normal count normalIndex undefined | number[] PolyfaceData indices of normals at facet vertices. param undefined | GrowableXYArray PolyfaceData Coordinates of uv parameters, packed as numbers in a contiguous array. paramCount Accessor ReadOnly number PolyfaceData Get the param count paramIndex undefined | number[] PolyfaceData Indics of params at facet vertices. point GrowableXYZArray PolyfaceData Coordinate data for points in the facets, packed as numbers in a contiguous array. pointCount Accessor ReadOnly number PolyfaceData Get the point count pointIndex number[] PolyfaceData Indices of points at facet vertices. requireNormals Accessor ReadOnly boolean PolyfaceData Ask if normals are required in this mesh. taggedNumericData undefined | TaggedNumericData PolyfaceData Tagged geometry data twoSided Accessor boolean PolyfaceData boolean tag indicating if the facets are viewable from the back Defined in polyface/IndexedPolyfaceVisitor.ts Line 19 Last Updated: 11 June, 2024