MODELING THE STRUCTURE OF THE SEA ANEMONE, STOMPHIA COCCINEA AND THE SEA STAR, DERMASTERIAS IMBRICATA USING IMPLICIT SURFACES
Date
2000-12-05
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Abstract
The Blob Tree provides a hierarchical data structure for the
definition of complex models built from implicit surfaces, CSG Boolean
operations and space warping functions. The implicit model within the system
is defined as a hierarchical composition of multiple objects. In this paper,
we describe an application of the Blob Tree to create visually accurate models
of two invertebrates, the sea anemone, Stomphia Coccinea, and the sea star,
Dermasterias Imbricata. The sea star was created using a variety of parameters
that could be modified to create different variations of the Dermasterias
Imbricata species. We use the phyllotactic method to obtain an accurate and
visually pleasing arrangement of the sea anemone's tentacles. Using a
hierarchical construction of the model, we can refine the model locally and
deform it globally while maintaining the integrity of surface details. Taking
advantage of the hierarchical representation of the object, we can easily
adjust the model by simply changing some parameters of the surface or by
performing global deformations on the anemone or local refinements on the
tentacles.
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Computer Science