Abstract
This paper presents a system for editing strip-like patches on the mesh using swept surface. The user first selects a rough cylinder-like region, the boundary of which is automatically refined. A swept surface approximation is automatically done, including extraction of the trajectory and the corresponding deforming 2D curves. The swept surface is described by a map from a real interval to both rigid body deformations and 2D curves. These 2D curves are analyzed and decomposed into many elements, which can be edited respectively, and a novel pattern analysis is also performed on these elements to extract curve patterns. These 2D curves serve as handles for controlling the geometry, and modifications to them can change the geometry directly. Thus, users can just edit the pattern or element curve to control the global geometry. We show the novelty and efficiency of our framework using varietal demonstrations.
Highlights
To meet the growing needs for 3D models, modeling from existing models is becoming a practical way for generating new models rapidly and efficiently
The state-of-the-art local surface editing techniques depend on intrinsic coordinates, such as multiresolution decompositions [1] and various shape deformation frameworks. Both provide efficient and reliable functionalities for deformation, geometry transferring, and so on. Such techniques focus on global deformation of the surface patch or geometry transferring, which is not competent for more sophisticated surface editing with rich user interaction
We present a robust way of approximating surface patch by swept surface
Summary
To meet the growing needs for 3D models, modeling from existing models is becoming a practical way for generating new models rapidly and efficiently. The state-of-the-art local surface editing techniques depend on intrinsic coordinates, such as multiresolution decompositions [1] and various shape deformation frameworks. Both provide efficient and reliable functionalities for deformation, geometry transferring, and so on. Such techniques focus on global deformation of the surface patch or geometry transferring, which is not competent for more sophisticated surface editing with rich user interaction. Though professional modeling packages [2, 3] can provide precise control using parametric patches or subdivision surfaces, they are really sophisticated and tiresome to use, especially for inexperienced users. The most famous example is teddy [4], which is a huge success and is significantly improved by a recent work [5]
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