3DSketch: modeling by digitizing with a smart 3D pen
MULTIMEDIA '97 Proceedings of the fifth ACM international conference on Multimedia
Teddy: a sketching interface for 3D freeform design
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
A methodology for a function-to-shape translation tool in foundry
Computers in Industry
Parametric and Feature Based CAD/Cam: Concepts, Techniques, and Applications
Parametric and Feature Based CAD/Cam: Concepts, Techniques, and Applications
World Wide Web Adapted Geometric Model in the Context of Functional Design
DIISM '00 Proceedings of the IFIP TC5 WG5.3/5.7/5.12 Fourth International Conference on the Design of Information Infrastructure Systems for Manufacturing: Global Engineering, Manufacturing and Enterprise Networks
Towards a Web Based CAD System
IV '01 Proceedings of the Fifth International Conference on Information Visualisation
P4LM: A methodology for product lifecycle management
Computers in Industry
CAD Interactions for Increasing Designers Awareness of Manufacturability
Proceedings of the 2006 conference on Leading the Web in Concurrent Engineering: Next Generation Concurrent Engineering
OTM'10 Proceedings of the 2010 international conference on On the move to meaningful internet systems
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Our goal is to define and implement a web-based CAD System. Distributing a CAD system over the World Wide Web implies that this system has not any knowledge about its user (his computer and CAD skills, his trade, etc.). Thus, this system has to be adapted to each possible user: from neophyte to CAD system expert. Actual CAD systems have complex computer-human interfaces, which are an obstacle to the modeling task for a non-expert end-user. As our aim is to provide a novice end-user with an easy-to-use CAD system, we are interested in providing a more intuitive interface than a classical one. CAD systems propose interfaces based on constructive modeling methods. Creating geometry using these modeling methods, based for example on Constructive Solid Geometry, parametric models or features based modeling, is a very difficult task for somebody who has never used a CAD system. We present in this paper our approach (called synthetic method by opposition to constructive methods) which overcomes this main difficulty by reversing the modeling process. The general idea of our modeling method is that the user chooses an initial crude shape according to the correct object topology. This choice can be done by choosing an existing object or by giving either a functional description or a rough sketch. The chosen shape will be the basis of the modeling task. The user can deform this initial shape by using specific and intuitive dedicated tools, based on surface deformation and on free-form deformation techniques (FFD). This paper deals with the synthetic method concept, its implementation in a dedicated CAD system called DIJA and the improved boundary representation, which is used as geometric model and contains both the visualization model and the dialog model.