API Reference > geometry-core > Serialization > IModelJson > IModelJson.PlanarRegionProps > parityRegion parityRegion parityRegion: undefined | [{ loop: [IModelJson.CurvePrimitiveProps] }] {parityRegion:...} A collection of loops, with composite inside/outside determined by parity rules. (The single outer boundary with one or more holes is a parityRegion) Defined in serialization/IModelJsonSchema.ts Line 143 Last Updated: 11 June, 2024