API Reference > imodeljs-backend > iModels > IModelTransformOptions > loadSourceGeometry loadSourceGeometry loadSourceGeometry: undefined | boolean Flag that indicates whether or not the transformation process needs to consider the source geometry before cloning/transforming. For standard cases, it is not required to load the source GeometryStream in JavaScript since the cloning happens in native code. Also, the target GeometryStream will be available in JavaScript prior to insert. note If the source geometry affects the class mapping or transformation logic, then this flag should be set to true. The default is false. see IModelExporter.wantGeometry Defined in core/backend/src/IModelTransformer.ts Line 82 Last Updated: 12 June, 2024