| authors |
Turner, R., Balaguer, F., Gobbetti, E. and Thalmann, D. |
| year |
1991 |
| title |
Interactive Scene Walkthrough Using a Physically-Based Virtual Camera |
| source |
Computer Aided Architectural Design Futures: Education, Research, Applications [CAAD Futures ‘91 Conference Proceedings / ISBN 3-528-08821-4] Zürich (Switzerland), July 1991, pp. 511-520 |
| summary |
One of the most powerful results of recent advances in graphics hardware is the ability of a computer user to interactively explore a virtual building or landscape. The newest threedimensional input devices, together with high speed 3D graphics workstations, make it possible to view and move through a 3D scene by interactively controlling the motion of a virtual camera. In this paper, we describe how natural and intuitive control of building walkthrough can be achieved by using a physically-based model of the virtual camera's behavior. Using the laws of classical mechanics to create an abstract physical model of the camera, we then simulate the virtual camera motion in real time in response toforce data from the various 3D input devices (e.g. the Spaceball and Polhemus 3Space Digitizer). The resulting interactive behavior of the model is determined by several physical parameters such as mass, moment of inertia, and various friction coefficients which can all be varied interactively, and by constraints on the camera's degrees of freedom. This allows us to explore a continuous range of physically-based metaphors for controlling the camera motion. We present the results of experiments using several of these metaphors for virtual camera motion and describe the effects of the various physical parameters. |
| series |
CAAD Futures |
| full text |
 file.pdf (366,282 bytes) |
| references |
Content-type: text/plain
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Baum, R. and Wingel, J.W. (1990)
 Real Time Radiosity Through Parallel Processing and Hardware Acceleration
, Proceedings 1990 Workshop on Interactive 3D Graphics. ACM: 67-75
|
|
|
|
|
Brooks, F.P. (1986)
Walkthrough - A Dynamic Graphics System for Simulating Virtual Buildings
, Proceedings 1986 Workshop on Interactive 3D Graphics. ACM: 9-22
|
|
|
|
|
Feynman. R.P., Leighton, R.B. and Sands, M. (1963)
The Feymnan Lectures on Physics
, Reading, MA: Addison Wesley
|
|
|
|
|
Greenberg, D.P. (1974)
Computer Graphics in Architecture
, Scientific American 230 no. 5: 98-106
|
|
|
|
|
Hahn, J.K. (1988)
Realistic Animation of Rigid Bodies
, Computer Graphics 22 no. 4: 299-308
|
|
|
|
|
Mackinlay, J.D., Card, S.K. and Robertson, G (1990)
Rapid Controlled Movement Through a Virtual 3D Workspace
, Computer Graphics 24 no. 4: 171-176
|
|
|
|
|
Magnenat-Thalmann N. and Thalmann, D. (1986)
Special Cinematographic Effects Using Multiple Virtual Movie Camera
, IEEE Computer Graphics & Applications 6 no. 4: 43-50
|
|
|
|
|
Shinogawa, Y., Kunii, T.L., Nomura, Y., Okuno, T. and Y. Young (1990)
Automating View Function Generation for Walkthrough Animation Using a Reeb Graph
, Proceedings Computer Animation 90 pp. 227-238 - Tokyo Springer
|
|
|
|
|
Turner, R., Gobbetti, E., Balaguer, F., Mangili, A., Thalmann, D. and Magenat-Thalmann, N. (1990)
An Object Oriented Methodology Using Dynamic Variables for Animation and Scientific Visualization
, Proceedings Computer Graphics International 90 pp. 317-328 - Springer-Verlag
|
|
|
|
|
Ware, C. and Osborne, S. (1990)
Exploration and Virtual Camera Control in Virtual Three Environments
, Proceedings 1990 Workshop on Interactive 3D Graphics. ACM: 175-183
|
|
|
|
|
Watson, V. (1989)
A Breakthrough for Experiencing and Understanding Simulated Physics
, ACM SIGGRA Course Notes on State of the Art in Data Visualization, IV-26 - IV-32
|
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| last changed |
1999/04/07 12:03 |
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