I've been working on one for a while now that's very slowly coming together: https://github.com/logicalshift/flowbetween https://github.com/logicalshift/flowbet

I've been working on one for a while now that's very slowly coming together: https://github.com/logicalshift/flowbetween https://github.com/logicalshift/flowbetween if you're interested. I've been building out some backend stuff lately so there's a bunch of new features waiting to go in. https://github.com/Logicalshift/flo_draw https://github.com/Logicalshift/flo_draw has some demonstrations of the sort of procedural animation features I'm planning on adding, for instance.