> On 15 Oct 2018, at 10:20, Marek Wojciechowski <[email protected]> wrote: > > Hi! > > I have a python script: > > > > import gmsh > import math > > model = gmsh.model > factory = model.occ > > gmsh.initialize() > gmsh.option.setNumber("General.Terminal", 1) > > model.add("spline") > > factory.addPoint(0.2,-1.6,0,0.1, 101) > factory.addPoint(1.2,-1.6,0,0.1, 102) > factory.addPoint(1.2,-1.1,0,0.1, 103) > factory.addPoint(0.3,-1.1,0,0.1, 104) > factory.addPoint(0.7,-1,0,0.1, 105) > > # periodic bspline through the control points > factory.addSpline([103,102,101,104,105,103], 100) > > # COPY SPLINE HERE > dimTag = factory.copy([(1, 100)]) > > > > My question is how can i get a list of points forming copied spline? >
That's not possible, as the copy of the spline will actually only create a single point. The initial points used to construct the first spline are actually not used in its topological description: only their coordinates are needed internally by OpenCASCADE. If you look at the copy by adding e.g. factory.synchronize() gmsh.fltk.run() at the end of your script, and if you select the new curve (101) in Tools->Visibility, you will see that it only depends on a single geometrical point (it is periodic). You can access that point with gmsh.model.getBoundary(). We could access, for each particular curve/surface type, the underlying parameters. In the case of a bspline like curve 101, we could access the poles, knots and multiplicities. Or for a circle, you could access the center. But there is no "general" way to access that data (unless we convert all curves to nurbs and give access to the parameters - which is probably not what you want). Christophe > > Regards, > -- > Marek > > > > > > --- > Politechnika Łódzka > Lodz University of Technology > > Treść tej wiadomości zawiera informacje przeznaczone tylko dla adresata. > Jeżeli nie jesteście Państwo jej adresatem, bądź otrzymaliście ją przez > pomyłkę > prosimy o powiadomienie o tym nadawcy oraz trwałe jej usunięcie. > > This email contains information intended solely for the use of the individual > to whom it is addressed. > If you are not the intended recipient or if you have received this message in > error, > please notify the sender and delete it from your system. > > > > _______________________________________________ > gmsh mailing list > [email protected] > http://onelab.info/mailman/listinfo/gmsh — Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine Free software: http://gmsh.info | http://getdp.info | http://onelab.info _______________________________________________ gmsh mailing list [email protected] http://onelab.info/mailman/listinfo/gmsh
