Morphing the BlobTree
Article first published online: 24 DEC 2001
The Eurographics Association 2000
Computer Graphics Forum
Volume 19, Issue 4, pages 257–270, December 2000
How to Cite
Galin, E., Leclercq, A. and Akkouche, S. (2000), Morphing the BlobTree. Computer Graphics Forum, 19: 257–270. doi: 10.1111/1467-8659.00462
- Issue published online: 24 DEC 2001
- Article first published online: 24 DEC 2001
- Cited By
- implicit surfaces;
Implicit surfaces have proved to be a particularly well suited and efficient model for animating and morphing shapes of arbitrary topologies. The BlobTree model is characterized as a hierarchical combination of skeletal primitives organized in a tree. The nodes hold blending, boolean and warping operators, which allows the design of complex objects.
In this paper, we address the metamorphosis of the BlobTree. This appears a difficult task as the tree data-structures of the initial and final shapes are completely different in the general case, and consequently cannot be matched easily. We propose an original technique that solves the correspondence process and creates an intermediate generic BlobTree model whose instances interpolate the initial and final shapes.
The animator may control the correspondence between features and can specify both the speed of transformation and the trajectory of the nodes and the leaves of the generic BlobTree model. This provides the end user with a tight control over the transformation so as to achieve good visual effects.