Hi - Look for Geo/SOrientedBoundingBox.h in the source code: it does what you want. It's not interfaced in the parser, though.
On 17/06/10 11:26, Henri Pascal-Jenny wrote:
Hi I am facing the problem of _finding the minimum-3D box enclosing AS CLOSE AS POSSIBLE a set of 3D mesh points_ . I would like to avoid the use of a too-sophisticated algorithm . (cf. http://en.wikipedia.org/wiki/Minimum_bounding_box_algorithms) Actually, when used straightforwardly, the method “BoundingBox” available in a gmesh-session returns a 3D box which box does not always correspond to the minimum volume enclosing the set of points /( imagine a thin and not fully-planar shape tilted in respect to the axes of a standard coordinates-frame )/ / / In fact, the matter comes from the bulk orientation of the envelop of the set of points under consideration. The usage is : BoundingBox { expression, expression, expression, expression, expression, expression }; what forces the bounding box of the scene to the given expressions (X min, X max, Y min, Y max, Z min, Z max). Therefore, I am wandering if there is a way of operating the “BoundingBox” method in order to get in the end the truly-minimum 3D box enclosing. Actually, I guess that there is a preliminary thing to do related to the coordinates system ; maybe I am wrong. Well, I would appreciate it very much if anyone could supply me for any piece of information regarding my problem. Thanks a lot in advance for your attention and your cooperation. Regards Henri Pascal-Jenny _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
-- Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
