API Reference > geometry-core > Curve > CurvePrimitiveType CurvePrimitiveType Type alias Describes the concrete type of a CurvePrimitive. Each type name maps to a specific subclass and can be used for type-switching in conditional statements. "arc" => Arc3d "lineSegment" => LineSegment3d "lineString" => LineString3d "bsplineCurve" => BSplineCurve3dBase which is an intermediate class implemented by BSplineCurve3d and BSplineCurve3dH "bezierCurve" => BezierCurveBase which is an intermediate class implemented by BezierCurve3d and BezierCurve3dH "transitionSpiral" => TransitionSpiral3d "curveChainWithDistanceIndex" => CurveChainWithDistanceIndex see AnyCurvePrimitive for a union type that supports compile-time type narrowing. CurvePrimitiveType = "arc" | "lineSegment" | "lineString" | "bsplineCurve" | "bezierCurve" | "transitionSpiral" | "curveChainWithDistanceIndex" | "interpolationCurve" | "akimaCurve" Defined in curve/CurvePrimitive.ts Line 47 Last Updated: 11 June, 2024