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We show how interactive deformations of a virtual 3D object can be carried out by using a hierarchical implementation of the finite element method (FEM). Basing deformations on the concepts of elasticity gives the human a measure of predictability when deciding where to apply forces to the object so that a desired shape would ensue. As is well known, one of the most powerful tools for analysing...
This paper describes a new method for Boolean operations on solids with boundary representation. Its interest is to reduce a basically 3D problem to a 2D one. After a brief description of existing algorithms we present the idea for computing Boolean operations on faces. An important part of the paper is the formalization of the reconstruction which permits the algorithm to be robust. Presently,...
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