Overlaps

[pshriwise]

This adds plotting along with a customizable color in the same way that the background color is customized. Overlap plotting can be turned on/off with the Ctrl+P shortcut.

[paulromano]

When I try to use this, I get the following traceback:

Traceback (most recent call last):
  File "/home/romano/openmc-plotter/openmc-plotter", line 938, in <module>
    mainWindow.loadGui()
  File "/home/romano/openmc-plotter/openmc-plotter", line 92, in loadGui
    self.colorDialog.updateDialogValues()
  File "/home/romano/openmc-plotter/plotgui.py", line 1015, in updateDialogValues
    self.updateOverlapColor()
  File "/home/romano/openmc-plotter/plotgui.py", line 1075, in updateOverlapColor
    color = self.model.activeView.overlap_color
AttributeError: 'PlotView' object has no attribute 'overlap_color'

I made sure to use the latest develop branch of OpenMC, so that shouldn't be the issue.

[pshriwise]

It's likely this is because there is an out of date plot_settings.pkl file in the model directory. We check the version number when loading plot views but not when starting up the GUI. I've added a check for that now, so it should ignore those settings an generate the default view.

[paulromano]

Ah, ok, that makes sense. Now it works!