Export to SVG

[ghutchis]

Open Babel supports an SVG "ball and stick" rendering style, which works well for 2D depiction of molecules.

https://pqr.pitt.edu/static/data/svg/IE/IEDVJHCEMCRBQM-UHFFFAOYSA-N.svg

For Avogadro, we can directly map to 2D using the camera.

One tricky thing would be working out z-depth mapping (i.e., write out the back atoms first) and scaling the radii of the atoms, but that shouldn't be too hard.

[serk12]

Hi I've done a first template here. But I'm missing something, how the glwidget does the culling. I think this is because the m_camera->width() and m_camera->height() returns the pixel size but not the projection position? For the moment this is with a magic number. Any idea?

[ghutchis]

I know that @cryos did that part of the code, so I'm tagging him. I think for a first PR, I'd be okay without culling.