Optional content groups in muPDF backend #1155
Merged
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This PR introduces the option for the muPDF backend to tag entities as belonging to 'optional content groups' which are similar to layers in that visibility of entities in the groups can be toggled in supported viewers. muPDF OCG documentation. This feature was requested in #1154 .
The current implementation only outputs visible layers as entities on invisible/hidden layers are filtered out by the frontend. A future improvement could be to use
--all-layers-visible
together with an option for the backend to set the layer visibility in the output independently from their visibility in the dxf.Some fixes have also been applied to the
ezdxf draw
command as the--all-layers-visible
had stopped working.