Question of plugin development

Hi, I resarch about the freehand input system in my university,
and I'm developing plugin for this program.

SKIT

This plugin need overlap of graphic_view,
So can I get geometory of graphic_view from plugin?

I apologize that my English is not enough. Thanks.

The developer of the plugin system is absent.

https://github.com/LibreCAD/LibreCAD/blob/master/librecad/src/main/doc_plugin_interface.cpp

https://github.com/LibreCAD/LibreCAD/blob/master/librecad/src/plugins/document_interface.h

https://github.com/LibreCAD/LibreCAD/blob/master/librecad/src/plugins/qc_plugininterface.h

http://wiki.librecad.org/index.php/LibreCAD_Plugin_Development

https://github.com/LibreCAD/LibreCAD/issues/822