API Reference > core-geometry > Polyface > IndexedPolyfaceSubsetVisitor

IndexedPolyfaceSubsetVisitor Class

An IndexedPolyfaceSubsetVisitor is an IndexedPolyfaceVisitor which only visits a subset of facets in the polyface.

  • The subset is defined by an array of facet indices provided when this visitor is created.
  • Within the subset visitor, "facetIndex" is understood as index within the subset array:
    • moveToNextFacet moves only within the subset
    • moveToReadIndex(i) moves underlying visitor's parentFacetIndex(i)

Extends

Methods

Name Description
moveToNextFacet(): boolean Advance the iterator to a the 'next' facet in the client polyface  
moveToReadIndex(activeIndex: number): boolean Advance the iterator to a particular facet in the client polyface  
parentFacetIndex(activeIndex: number): undefined | number return the parent facet index of the indicated index within the active facets  
reset(): void Reset the iterator to start at the first facet of the polyface.  
createSubsetVisitor(polyface: IndexedPolyface, activeFacetIndices: number[], numWrap: number): IndexedPolyfaceSubsetVisitor Static Create a visitor for iterating a subset of 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
clearArrays(): void IndexedPolyfaceVisitor clear the contents of all arrays.
clientAuxIndex(i: number): number IndexedPolyfaceVisitor Return the aux data index of vertex i within the currently loaded facet
clientColorIndex(i: number): number IndexedPolyfaceVisitor Return the color index of vertex i within the currently loaded facet
clientNormalIndex(i: number): number IndexedPolyfaceVisitor Return the normal index of vertex i within the currently loaded facet
clientParamIndex(i: number): number IndexedPolyfaceVisitor Return the param index of vertex i within the currently loaded facet
clientPointIndex(i: number): number IndexedPolyfaceVisitor Return the point index of vertex i within the currently loaded facet
clientPolyface(): Polyface IndexedPolyfaceVisitor Return the client polyface object.
clone(): PolyfaceData IndexedPolyfaceVisitor Return a depp clone.
compress(): void IndexedPolyfaceVisitor * Search for duplicates within points, normals, params, and colors.
copyNormalTo(i: number, dest: Vector3d): void IndexedPolyfaceVisitor Copy the contents (not pointer) of normal[i] into dest.
copyParamTo(i: number, dest: Point2d): void IndexedPolyfaceVisitor Copy the contents (not pointer) of param[i] into dest.
copyPointTo(i: number, dest: Point3d): void IndexedPolyfaceVisitor Copy the contents (not pointer) of point[i] into dest.
currentReadIndex(): number IndexedPolyfaceVisitor Return the index (in the client polyface) of the current facet
gatherIndexedData(other: PolyfaceData, index0: number, index1: number, numWrap: number): void IndexedPolyfaceVisitor * Copy data from other to this.
getColor(i: number): number IndexedPolyfaceVisitor return indexed color
getEdgeVisible(i: number): boolean IndexedPolyfaceVisitor return indexed visibility
getNormal(i: number): undefined | Vector3d IndexedPolyfaceVisitor return indexed normal.
getParam(i: number): undefined | Point2d IndexedPolyfaceVisitor return indexed param.
getPoint(i: number, out?: Point3d): undefined | Point3d IndexedPolyfaceVisitor return indexed point.
isAlmostEqual(other: PolyfaceData): boolean IndexedPolyfaceVisitor Test for equal indices and nearly equal coordinates
isAlmostEqualParamIndexUV(index: number, u: number, v: number): boolean IndexedPolyfaceVisitor test if normal at a specified index matches uv
pushDataFrom(other: PolyfaceVisitor, index: number): void IndexedPolyfaceVisitor 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 IndexedPolyfaceVisitor transfer interpolated data from the other visitor.
range(result?: Range3d, transform?: Transform): Range3d IndexedPolyfaceVisitor Return the range of the point array (optionally transformed)
resizeAllDataArrays(length: number): void IndexedPolyfaceVisitor Resize all data arrays to specified length
reverseIndices(facetStartIndex?: number[]): void IndexedPolyfaceVisitor reverse indices facet-by-facet, with the given facetStartIndex array delimiting faces.
reverseIndicesSingleFacet(facetId: number, facetStartIndex: number[]): void IndexedPolyfaceVisitor reverse indices facet-by-facet, with the given facetStartIndex array delimiting faces.
reverseNormals(): void IndexedPolyfaceVisitor Scale all the normals by -1
setNumWrap(numWrap: number): void IndexedPolyfaceVisitor Set the number of vertices duplicated (e.g.
setTaggedNumericData(data: undefined | TaggedNumericData): void IndexedPolyfaceVisitor set the taggedNumericData member
trimAllIndexArrays(length: number): void IndexedPolyfaceVisitor Trim all index arrays to stated length.
tryGetDistanceParameter(index: number, result?: Point2d): undefined | Point2d IndexedPolyfaceVisitor Attempts to extract the distance parameter for the given vertex index on the current facet
tryGetNormalizedParameter(index: number, result?: Point2d): undefined | Point2d IndexedPolyfaceVisitor Attempts to extract the normalized parameter (0,1) for the given vertex index on the current facet.
tryTransformInPlace(transform: Transform): boolean IndexedPolyfaceVisitor Apply transform to point and normal arrays and to auxData.
create(polyface: IndexedPolyface, numWrap: number): IndexedPolyfaceVisitor Static IndexedPolyfaceVisitor 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
isValidFacetStartIndexArray(facetStartIndex: number[]): boolean Static IndexedPolyfaceVisitor Test if facetStartIndex is (minimally!) valid:
reverseIndices<T>(facetStartIndex: number[], indices: undefined | T[], preserveStart: boolean): boolean Static IndexedPolyfaceVisitor Reverse data in entire facet indexing arrays.
reverseIndicesSingleFacet<T>(facetId: number, facetStartIndex: number[], indices: undefined | T[], preserveStart: boolean): boolean Static IndexedPolyfaceVisitor Reverse data in entire facet indexing arrays.

Inherited properties

Name Type Inherited from Description
auxData undefined | PolyfaceAuxData IndexedPolyfaceVisitor Auxiliary data
color undefined | number[] IndexedPolyfaceVisitor Color values.
colorCount Accessor ReadOnly number IndexedPolyfaceVisitor Get the color count
colorIndex undefined | number[] IndexedPolyfaceVisitor Indices of colors at facet vertices.
edgeVisible boolean[] IndexedPolyfaceVisitor booleans indicating visibility of corresponding edges
expectedClosure Accessor number IndexedPolyfaceVisitor boolean tag indicating if the facets are viewable from the back
face FacetFaceData[] IndexedPolyfaceVisitor Face data will remain empty until a face is specified.
faceCount Accessor ReadOnly number IndexedPolyfaceVisitor 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 IndexedPolyfaceVisitor Get the index count. Note that there is one count, and all index arrays (point, normal, param, color) must match
normal undefined | GrowableXYZArray IndexedPolyfaceVisitor Coordinates of normal vectors, packed as numbers in a contiguous array
normalCount Accessor ReadOnly number IndexedPolyfaceVisitor Get the normal count
normalIndex undefined | number[] IndexedPolyfaceVisitor indices of normals at facet vertices.
numEdgesThisFacet Accessor ReadOnly number IndexedPolyfaceVisitor Return the number of edges in the current facet.
* Note that if this visitor has numWrap greater than zero, the number of edges is smaller than the number of points.
param undefined | GrowableXYArray IndexedPolyfaceVisitor Coordinates of uv parameters, packed as numbers in a contiguous array.
paramCount Accessor ReadOnly number IndexedPolyfaceVisitor Get the param count
paramIndex undefined | number[] IndexedPolyfaceVisitor Indices of params at facet vertices.
point GrowableXYZArray IndexedPolyfaceVisitor Coordinate data for points in the facets, packed as numbers in a contiguous array.
pointCount Accessor ReadOnly number IndexedPolyfaceVisitor Get the point count
pointIndex number[] IndexedPolyfaceVisitor Indices of points at facet vertices.
requireNormals Accessor ReadOnly boolean IndexedPolyfaceVisitor Ask if normals are required in this mesh.
taggedNumericData undefined | TaggedNumericData IndexedPolyfaceVisitor Tagged geometry data
twoSided Accessor boolean IndexedPolyfaceVisitor boolean tag indicating if the facets are viewable from the back

Defined in

Last Updated: 20 June, 2023