API Reference > geometry-core > Serialization > IModelJson > IModelJson.BcurveProps IModelJson.BcurveProps Interface Interface for bspline curve (aka bcurve) Properties Name Type Description closed undefined | false | true optional flag for periodic data. knots [number] knots. order number order of polynomial points [XYZProps] control points Defined in core/geometry/src/serialization/IModelJsonSchema.ts Line 339 Last Updated: 13 June, 2024