Variational System Curve Geometry Editing via Constraint Propagation
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Solution Overview
Problem
Conventional curve geometry editing in variational systems requires either no constraints or full system constraining, which is inefficient and lacks the advantages of synchronous technology, such as automated, local, fast, and intuitive editing.
Innovation Solution
A method that receives a geometric model, propagates operations through the model based on existing conditions, and performs a variational solve to produce modified entities without requiring the entire system to be constrained, allowing for efficient curve geometry edits in a synchronous environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full system constraining is applied for curve geometry editing, then the reliability of the edit process is improved, but the device complexity and time consumption increase significantly
Solution Approach 1:
The patent segments the geometric model into discrete entities with specific relationships, allowing constraints to be applied locally to relevant entities rather than the entire system. The propagation mechanism identifies and constrains only the subset of entities affected by the editing operation, maintaining reliability while reducing complexity.
Solution Approach 2:
The patent implements local quality by applying constraints only to the specific entities and their relationships that are relevant to the current editing operation. The propagation mechanism ensures that constraints are localized to the affected portion of the geometric model, avoiding the need for full system constraining while maintaining edit reliability.
2Ease of operation
If conventional curve geometry editing is performed without constraints, then the ease of operation is improved, but the manufacturing precision and design intent maintenance deteriorate
Solution Approach 1:
The patent performs preliminary action by automatically propagating constraints through the geometric model before the editing operation is executed. The system pre-identifies all entities that will be affected by the operation and establishes the appropriate constraint relationships in advance, ensuring both ease of operation and manufacturing precision.
Solution Approach 2:
The patent implements self-service by enabling the geometric model to automatically maintain its own constraints and relationships during editing operations. The propagation mechanism allows the model to self-determine which entities need to be constrained based on the operation being performed, eliminating the need for manual constraint management while preserving design intent.
3Productivity
If synchronous technology advantages are implemented for automated editing, then the productivity is improved, but the difficulty of implementing variational solve increases
Solution Approach 1:
The patent segments the variational system into manageable components by propagating constraints through discrete entities and their relationships. This segmentation allows the synchronous technology to process only the relevant subset of the geometric model, improving productivity while controlling the complexity of the variational solve through modular processing.
Data Source
AI summary
Methods for product data management and corresponding systems and computer-readable mediums. A method includes receiving a geometric model including plurality of entities and receiving existing conditions corresponding to the geometric model. The method includes receiving an operation to be performed on a selected entity of the geometric model. The method includes propagating through the geometric model from the selected entity to other entities of the geometric model, according to the existing conditions, and adding the selected entities and the other entities to a variational system. The method includes performing a variational solve of the variational system according to the operation to produce modified entities and applying the modified entities to the geometric model to produce an edited geometric model.