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Real-time
Meshless Deformation |
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| Project
Members |
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Xiaohu
Guo, Hong
Qin |
| Center
for Visual Computing
Department
of Computer Science
State
University of New York at Stony Brook |
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| Abstract: |
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| In
this paper, we articulate a meshless computational paradigm for
the effective modeling, accurate physical simulation, and real-time
animation of point-sampled solid objects. Both the interior and
the boundary geometry of our volumetric object representation
only consist of points, further extending the powerful and popular
method of point-sampled surfaces to the volumetric setting. We
build the point-based physical model upon continuum mechanics,
which affords to effectively model the dynamic elastic behavior
of point-based volumetric objects. When only surface samples are
provided, our prototype system first generates both interior volumetric
points and a volumetric distance field with octree structure.
The physics of these volumetric points in a solid interior are
simulated using the Meshless Moving Least Squares (MLS) shape
functions. In sharp contrast to the traditional finite element
method (FEM), the meshless property of our new technique expedites
the accurate representation and precise simulation of the underlying
discrete model, without the need of domain meshing. In order to
achieve real-time simulations, we utilize the warped modal analysis
method that is locally linear in nature but globally warped to
account for rotational deformation. The structural simplicity
and real-time performance of our meshless simulation framework
are ideal for interactive animation and game/movie production. |
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| Keywords:
physics-based
animation, point-based animation, meshless method, modal analysis |
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| Screenshots: |
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| Video:
(still
modifying, please check back later...) |
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| Publication: |
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- Xiaohu
Guo, Hong Qin, "Real-time
Meshless Deformation", in Computer Animation
and Virtual Worlds, Vol. 16, No. 3-4, pp. 189 - 200, 2005.
(Presented at CASA 2005)
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