vpype_viewer - how to change default pen width and opacity?

[vmario89]

Hi,
reading the docs i did not find a proper way to predefine the values of opacity and pen width in matplotwindow. the defaults are width=0.3 an opacity 80%. how to change? there is a class called Engine but how to add this to the viewer?

[abey79]

Is your question about the show command ( vpype read input.svg [...] show) or the vpype_viewer.show() API?

Either way I think this is not yet possible. Additional params should be added to vpype_viewer.show() and QtViewer.__init__() (PR welcome if you feel like it).

[vmario89]

made a pr at #248