save state of camera?

Hi Bruno,

very interesting thing to do. I just found it, the qt viewer is saved into the simulation if you use O.save(...) :

1°) launch yade, launch the 3d view.
2°) type : V=yade.qt.views()[0]
3°) move the view as you want to save it.
4°) type : V.saveState(0) # where 0 is a memory slot number, you should be able to save many 3d-view sates by changing this integer.
5°) save the simulation with : O.save("whatever")
6°) close and re-launch yade.
7°) load the simulation with O.load("whatever")
8°) launch the 3d view
9°) type again : V=yade.qt.views()[0]
10°) type : V.loadState(0)
11°) et voilà

Warning : after step 6°), you have to load the simulation before starting the 3D view. Otherwise the memory slot will not be recovered.

Thank you, but it doesn't work for me. It does exactly the same as the
F7-F9 keys, and I just reported a bug against them [1].
No error message but the displayed object disappears after 10°). Not for
you?
I re-wrote saveState/loadState after finding this bug (uncommited). Now
I can save/load correctly. The problem it is only restoring the viewer
(camera position, basicaly), not the renderer (background color,
clipping planes, etc.). It is a regression compared to what it was
supposed to do (saving both), but it works... Not sure what to do.

B

I have done my tests without bodies, just by showing the 3 axis, so I was not aware of this bug.
I have just noticed that once you have loaded a view state, all changes you make at the renderer with the controller will not apply (background color etc ...). It is certainly linked to the bug you reported.