Re: [Haskell-cafe] diagrams

Message: 3 Date: Fri, 20 Jun 2014 13:30:29 -0700 From: Joachim Breitner To: haskell-cafe@haskell.org Subject: Re: [Haskell-cafe] diagrams Message-ID: <1403296229.16156.3.camel@kirk> Content-Type: text/plain; charset="utf-8"

Hi,

Am Mittwoch, den 18.06.2014, 23:44 -0400 schrieb Anthony Cowley:

...

...

I have no doubt that diagrams can make the diagrams themselves. What I wonder about is the animation capabilities---ability to have elements move or cross-fade (dissolve), in particular.

I very recently created this animation with diagrams, which does move and fade stuff: http://joachim-breitner.de/publications/haskell_bytes_portland_2014-06-13.we...

But the ride was not as smooth as it should have been. See https://gist.github.com/nomeata/cde96a2e693a23cca8ee for the code. The function positionSpec contains a ?script?, i.e. a sequence of animated modifications to the image, using lenses to position the change.

I guess with the right combinators, this can be greatly simplified, but it is hard to come up with the right combinators. Especially as our code is one-dimensional, and we want to compose in three dimensions (x, y and time).

It’s still a nice example though - thanks for posting it. Dominic Steinitz dominic@steinitz.org http://idontgetoutmuch.wordpress.com