Abstract: A computer-implemented method and system uses a single command to modify a feature type of a feature in a computer-aided design model. The method and system construct a three-dimensional (3D) model comprised of at least one feature, where the feature type is an extrude, a revolve, and a sweep. A command is provided that upon execution creates an extrude feature, a revolve feature, or a sweep feature. The feature is modified such that the feature changes from one feature type to another feature type. And after modifying the feature, references to a set of faces of the feature are maintained such that other features dependent on the feature properly update.

Abstract: Deforming a three-dimensional target model using a three-dimensional tool model to cause a change of shape of the target model includes selecting the three-dimensional tool model whereby the tool model representing an archetype of a shape to impress upon the three-dimensional target model, and deforming the target model in accordance with a surface deformation procedure that produces a smoothed shape of the tool model in a region of the target model.