Abstract: A system, method, and computer readable medium. A method includes receiving a model tree that defines a three-dimensional (3D) model. The model tree includes a history-free parent node that defines a complex 3D model and a plurality of history-based child nodes that define additional features that modify the complex 3D model. The method includes computing the 3D model, where the computed 3D model combines the parent node and the child nodes. The method includes displaying the computed 3D model as the complex 3D model modified by the additional features defined by the child nodes.

Abstract: A system, method, and computer readable medium. A method includes receiving a model tree that defines a three-dimensional (3D) model. The model tree includes a history-free parent node that defines a complex 3D model and a plurality of history-based child nodes that define additional features that modify the complex 3D model. The method includes computing the 3D model, where the computed 3D model combines the parent node and the child nodes. The method includes displaying the computed 3D model as the complex 3D model modified by the additional features defined by the child nodes.

Abstract: A system, method, and computer program for selecting geometries from a solid model that is manipulated in a computer having software instructions, comprising: a computer system, wherein the computer system includes a memory, a processor, a user input device, and a display device; a computer generated geometric model stored in the memory in the memory of the computer system; and wherein the computer system selects a two-dimensional sketch geometry from a two-dimensional sketch to form a three-dimensional model using a feature command; identifies a plurality of elements on the two-dimensional sketch geometry that correspond to the three-dimensional model; forms a counterpart element on the three-dimensional model that is one of a dimension and a constraint from the identified plurality of elements; and provides the capability to modify the three-dimensional model by manipulating the counterpart element; and appropriate means and computer-readable instructions.

Abstract: A system, method, and computer program product for performing edits on related curves by automatically defining an associative entity that is upstream of either curve being connected. The connecting entity is called an ‘intermediary’. When creating a connection between curves, irrespective of where they appear in the associative tree, their geometry is made dependent on a common intermediary that is placed upstream of both curves in the tree. With this structure, both curves are related to the intermediary but retain all the properties of being connected to each other. Any edit performed to either curve is redirected through the intermediary such that both curves are simultaneously modified, providing the user with bi-directional propagation of edits. The user does not need to keep track of the order that the curves were related.

Abstract: A system, method, and computer program product for performing edits on related curves by automatically defining an associative entity that is upstream of either curve being connected. The connecting entity is called an ‘intermediary’. When creating a connection between curves, irrespective of where they appear in the associative tree, their geometry is made dependent on a common intermediary that is placed upstream of both curves in the tree. With this structure, both curves are related to the intermediary but retain all the properties of being connected to each other. Any edit performed to either curve is redirected through the intermediary such that both curves are simultaneously modified, providing the user with bi-directional propagation of edits. The user does not need to keep track of the order that the curves were related.