API Reference > geometry-core > Curve > ArcBlendData ArcBlendData Interface Carrier structure for an arc with fractional data on incoming, outgoing curves. Properties Name Type Description arc undefined | Arc3d Constructed arc fraction10 number fraction "moving backward" on the inbound curve fraction12 number fraction "moving forward" on the outbound curve point undefined | Point3d optional reference point Defined in curve/Arc3d.ts Line 1009 Last Updated: 12 June, 2024