Vectorized drawing in aggdraw

[pllim]

During Scipy 2018, we experimented with vectorized-drawing branch from https://github.com/ejeschke/aggdraw/ . @ejeschke, do you have plans to open a formal pull request from that branch against https://github.com/pytroll/aggdraw ?

[ejeschke]

I'm still thinking through the best way to handle the vectorization in aggdraw. I have a couple of different implementations, one of which is simpler in that it can draw a different kinds of forms in one call (in other words, circles, polygons, etc.). That is the one I am leaning toward now, as it could be generally useful for drawing a whole canvas full of objects efficiently. But I don't want to be rattling upstream until it seems that the way forward is clear.

I will update the vectorized-drawing branch soon.