45 citations · 139 across the 9 of their papers we have counts for
9 papers
Variational Direct Modeling: A framework towards integration of parametric modeling and direct modeling in CAD
Qiang Zou, Hsi-Yung Feng, Shuming Gao
Feature-based parametric modeling is the de facto standard in CAD. Boundary representation-based direct modeling is another CAD paradigm developed recently. They have complementary…
Parametric/direct CAD integration
Qiang Zou
In the history of computer-aided design (CAD), feature-based parametric modeling and boundary representation-based direct modeling are two of the most important CAD paradigms, deve…
A review on geometric constraint solving
Qiang Zou, Zhihong Tang, Hsi-Yung Feng +3
This paper presents a comprehensive review of geometric constraint solving in parametric computer-aided design (CAD), with the major focus on its advances in the last 15 years. Geo…
Length-optimal tool path planning for freeform surfaces with preferred feed directions
Qiang Zou, Charlie C. L. Wang, Hsi-Yung Feng
This paper presents a new method to generate tool paths for machining freeform surfaces represented either as parametric surfaces or as triangular meshes. This method allows for th…
A decision-support method for information inconsistency resolution in direct modeling of CAD models
Qiang Zou, Hsi-Yung Feng
Direct modeling is a very recent CAD paradigm that can provide unprecedented modeling flexibility. It, however, lacks the parametric capability, which is indispensable to modern CA…
A robust direct modeling method for quadric B-rep models based on geometry-topology inconsistency tracking
Qiang Zou, Hsi-Yung Feng
Boundary representation (B-rep) model editing plays an essential role in computer-aided design and motivates the very recent direct modeling paradigm, which features intuitive push…
On Limitations of the Witness Configuration Method for Geometric Constraint Solving in CAD Modeling
Qiang Zou, Hsi-Yung Feng
This paper presents discussions on the limitations of the witness configuration method. These limitations have rarely been reported in previous studies. The witness configuration m…
Variational B-rep Model Analysis for Direct Modeling using Geometric Perturbation
Qiang Zou, Hsi-Yung Feng
The very recent CAD paradigm of direct modeling gives rise to the need of processing 3D geometric constraint systems defined on boundary representation (B-rep) models. The major is…
Push-pull direct modeling of solid CAD models
Qiang Zou, Hsi-Yung Feng
Direct modeling is a very recent CAD modeling paradigm featuring direct, intuitive push-pull interactions with the geometry of the model to much increase model editing flexibility.…