Question #692956 on Yade changed: https://answers.launchpad.net/yade/+question/692956
Janek Kozicki posted a new comment: Hi, this is a very nice idea. If you want the qglviewer camera to follow your debirs you can for example use function https://yade- dem.org/doc/yade.qt.html#yade.qt._GLViewer.center , I didn't try how it works when invoked from a python script inside an Engine loop though. I didn't expect such kind of use for this function. So we might need to improve it a little bit. Or maybe add some alternative toggle to always recenter in C++ before a redraw. I admit that the class name FieldApplier is very tempting when thinking about gravitational filed. It is a base class for all other *Engines that are supposed to apply some forces: https://yade- dem.org/doc/yade.wrapper.html#fieldapplier CentralGravityEngine does not depend on distance: https://gitlab.com /yade-dev/trunk/-/blob/master/pkg/common/GravityEngines.cpp#L51 You will need to write your own derived class to do what you want: > Is there a way to define a force field using a fuction for position. The FieldApplier looks promising, but how do I use it? Yes, exactly. Derive a class from it and make it apply some defined force field. You can hardcode force field in C++, or use overrideble virtual functions to be able to write function formula inside python: https://yade-dem.org/doc/prog.html#subclassing-c-types-in-python -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp