Modelling of the transformation of an object defined by geometric constraints

نویسندگان

  • Alain Rivière
  • André Clément
چکیده

To specify and solve 2D and 3D problems integrating geometrical constraints, we have developed a declarative model where objects and constraints are represented by a set of vectors. These vectors are not defined by their usual Cartesian coordinates but by their respective scalar products. It is then the metric tensor which defines the geometrical object. To solve the problem, we finalized a model calling for the transformation of the object from its initial state to it final state. RÉSUMÉ. Afin de spécifier et résoudre les problèmes géométriques 2D et 3D définis par des contraintes géométriques, nous avons élaboré un modèle déclaratif où les objets et les contraintes sont représentés par un ensemble de vecteurs. Ces vecteurs ne sont pas représentés par leurs coordonnées cartésiennes habituelles mais par leur produit scalaire respectif. C’est alors un tenseur métrique qui définit l’objet géométrique. Pour résoudre le problème, nous avons mis au point un modèle faisant appel à la transformation de l’objet de son état initial à son état final.

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تاریخ انتشار 2007