1.4.0 Change Notes

Geometry

Summary

• New class CurveFactory to hold future static methods that construct multi-component curves.
  • First method: CurveFactory.createFilletsInLineString
• PolyfaceBuilder static method to build xy triangulation of array of points.
• PolyfaceClip static method to compute cut-fill between 2.5D meshes.

Details

• Arc3d
  • (static) Arc3d.createFilletArc(point0: Point3d, point1: Point3d, point2: Point3d, radius: number): ArcBlendData;
    • Create (if possible) a single arc that is a fillet between line segment from point0 to point and point1 to point.
    • Annotated return with fractional position of tangent, fractions from middle point outward along segments.
    • point1 (middle points) is commonly called the PI (point of inflection) for the linestring being filleted.
    • See new support interface ArcBlendData
• CurveFactory
  • (static) CurveFactory.createFilletsInLineString(points: LineString3d | IndexedXYZCollection | Point3d[], radius: number, allowBackupAlongEdge?: boolean): Path | undefined;
    • Create a path with alternating lines and tangent arcs.
• CurveCollection
  • (static) static createCurveLocationDetailOnAnyCurvePrimitive(source: GeometryQuery | undefined, fraction?: number): CurveLocationDetail | undefined;
    • Find any curve primitive in the collection. Evaluate it at a fractional position.
• CurveCurve
  • (static) CurveCurve.intersectionXYPairs(geometryA: GeometryQuery, extendA: boolean, geometryB: GeometryQuery, extendB: boolean): CurveLocationDetailPair[]
    • Same as existing (deprecated) CurveCurve.intersectionXY, but bundles pairs of CurveLocationDetailPair in single array more useful for processing.
• Point3dArray
  • (static) Point3dArray.static computeConvexHullXY(points: Point3d[], hullPoints: Point3d[], insidePoints: Point3d[], addClosurePoint?: boolean): void;
    • Return hullPoints in CCW order around the hull
    • Return all non-hull points in insidePoints
• PolyfaceBuilder
  • (static) PolyfaceBuilder.pointsToTriangulatedPolyface(points: Point3d[]): IndexedPolyface | undefined;
    • Return triangulated mesh within the convex hull around the points.
• PolyfaceClip
  • (static)
• ClipPlane and ConvexClipPlaneSet support
  • myClipPlane.convexPolygonSplitInsideOutsideGrowableArrays(xyz: GrowableXYZArray, xyzIn: GrowableXYZArray, xyzOut: GrowableXYZArray, altitudeRange: Range1d): void;
    • Split a polygon across a plane; optimized for GrowableXYZArray storage.
  • (static) ClipPlane.createNormalAndPointXYZXYZ(normalX: number, normalY: number, normalZ: number, originX: number, originY: number, originZ: number, invisible?: boolean, interior?: boolean, result?: ClipPlane): ClipPlane | undefined;
    • (preexisting) added optional result parameter
• Ray3d
  • interval = myRay.intersectionWithRange3d(range: Range3d, result?: Range1d): Range1d
    • return fractions (along the ray myRay) where the myRay enters and exits a Range3d, or null Range1d if no in intersection.

Enhancements to IModelDb.exportGraphics

• IModelDb.exportGraphics and associated functions are now out of beta and tagged as public.
• Added ExportGraphicsOptions.minBRepFeatureSize to improve performance when exporting graphics for breps.

Authorization Changes

Changes to Agent authorization

OidcAgentClient now implements IAuthorizationClient. The following methods are now marked deprecated -

• AgentAuthorizationClient.getToken
• AgentAuthorizationClient.refreshToken

The access token is now stored in the client, and can be accessed by calling AgentAuthorizationClient.getAccessToken. This method validates and refreshes the token as necessary.

Swapping backend authorization to use agents

The API now allows swapping the authorization client used for backend operations like downloading a briefcase or change sets of an iModel. Set IModelHost.authorizationClient to the required authorization client - e.g., an instance of OidcAgentClient.

Last Updated: 15 June, 2021