Abstract
We argue that B-spline solids are effective primitives for the animation of physically-based deformable objects. After reviewing the mathematical formulation of B-spline solids, we describe how to quickly display and modulate their shapes. We apply our ideas to muscle modelling and provide techniques for initial shape definition and subsequent shape deformation. Data-fitting techniques are developed to build muscles from profile curves or from contour data taken from medical images. By applying a spring-mass model to the resulting B-spline solid, we have transformed a static model to a deformable one. The 3-D parameterization of the solid allows us to model microstructures within the solids such as fibre bundles in a muscle. B-spline solids are powerful and versatile deformable shape primitives that can be used in practical settings, such as the building-blocks of a muscle-based modeller and animation system for anatomical design.
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Ng-Thow-Hing, V., Fiume, E. (1997). Interactive display and animation of B-spline solids as muscle shape primitives. In: Thalmann, D., van de Panne, M. (eds) Computer Animation and Simulation ’97. Eurographics. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6874-5_6
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DOI: https://doi.org/10.1007/978-3-7091-6874-5_6
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