API Reference > geometry-core > Serialization > IModelJson > IModelJson.ArcByVectorProps IModelJson.ArcByVectorProps Interface Interface for Arc3d value defined by center, vectorX, vectorY and sweepStartEnd. Properties Name Type Description center XYZProps Arc center point sweepStartEnd AngleSweepProps Start and end angles in parameterization X=C+cos(theta) * vectorX + sin(theta) * vectorY vectorX XYZProps Vector from center to 0-degree point (commonly called major axis vector) vectorY XYZProps Vector from center to 90-degree point (common called minor axis vector) Defined in core/geometry/src/serialization/IModelJsonSchema.ts Line 212 Last Updated: 13 June, 2024