The utility of speech input in user-computer interfaces
International Journal of Man-Machine Studies
3DM: a three dimensional modeler using a head-mounted display
I3D '92 Proceedings of the 1992 symposium on Interactive 3D graphics
Collaborative geometrical modeling in immersive virtual environments
Proceedings of the Eurographics workshop on Virtual environments and scientific visualization '96
Boundary representation deformation in parametric solid modeling
ACM Transactions on Graphics (TOG)
EGVE '02 Proceedings of the workshop on Virtual environments 2002
Parametric and Feature Based CAD/Cam: Concepts, Techniques, and Applications
Parametric and Feature Based CAD/Cam: Concepts, Techniques, and Applications
Erep: An editable, high-level representation for geometric design and analysis
Selected and Expanded Papers from the IFIP TC5/WG5.2 Working Conference on Geometric Modeling for Product Realization
inTouch: Interactive Multiresolution Modeling and 3D Painting with a Haptic Interface
VR '00 Proceedings of the IEEE Virtual Reality 2000 Conference
A Model Representation for Solid Modelling in a Virtual Reality Environment
SMI '02 Proceedings of the Shape Modeling International 2002 (SMI'02)
EG VE'00 Proceedings of the 6th Eurographics conference on Virtual Environments
Haptically-Aided Extrusion for Object Edition in CAD
EuroHaptics '08 Proceedings of the 6th international conference on Haptics: Perception, Devices and Scenarios
Proceedings of the 2008 ACM symposium on Virtual reality software and technology
D3: an immersive aided design deformation method
Proceedings of the 16th ACM Symposium on Virtual Reality Software and Technology
Nonlinear revision control for images
ACM SIGGRAPH 2011 papers
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Virtual Environments (VE) allow direct 3D interaction, better perception of shapes and a feel of immersion, properties that are highly desirable for design tasks. Traditional CAD software extensively use WIMP interfaces (Windows, Icons, Menus and Pointing device), but these interaction models are not suited in VE. Moreover, during a design task, the use of dialog boxes, buttons, etc. deteriorates the user's focus on his work. However, to fully benefit from immersive interaction we need more reactive behavior from 3D objects. The objects data structures must provide efficient ways for real-time modification of the geometric definitions of solids via direct 3D interactions. We will present an approach that replaces the traditional editing of the construction history graph in parametric modelers. A description of data structures and algorithms that allow the user to implicitly modify the history of a solid through a direct 3D interaction on topological elements of the objects will be given. The techniques presented here are validated in a VE prototype, using the OpenCASCADE geometric kernel and a multimodal interface.