[racket-dev] Plot testing and feedback

At Fri, 12 Aug 2011 19:47:43 -0700, Neil Toronto wrote:
> Thank you! I blame, in order:
> 
> 1. Racket's awesome cross-platform drawing library. Holy cow! Making 
> nice plots would be next to impossible without it. Also, the fact that I 
> can render to ps/pdf/svg just by passing a different dc is wicked cool. 
> It even does alpha! In a PDF! How about that?

The credit here goes to Cairo (cairographics.org), which is the
back-end for dc drawing. In the old (pre-v5.1) days, we had our own
library that worked ok, but Cairo works much better.