flo_draw VS inkscape-open-symbols

I've been working a 2D rendering toolkit that increasingly looks to me like it probably deserves a mention on these lists: https://github.com/logicalshift/flo_draw (but I'm not on Reddit...). Layers, vector sprites, dynamic textures and a streaming API that fits well with 'reactive' designs are amongst the features that make it stand out from what else is out there. It's super simple to get going too.

Started life as a rendering layer for FlowBetween so I could put in whatever looked like it was 'winning' later on but wound up writing my own renderer as there wasn't anything quite there yet. Still has that design so another unique thing is that it's possible to use the same API with whatever rendering layer you want.

Speaking of FlowBetween, one thing I have wanted to do for ages is to get rid of the platform-specific GUIs and use something universal. It should be easy because FlowBetween sends straightforward instructions to an independent GUI layer, but I keep bouncing off for a few reasons:

- it's a big ole task so I definitely want to pick something that's stable and also lets me hedge my bets in terms of being easy to migrate away from

If Rust's your language, I wrote a library that should be pretty good at 2D things: https://github.com/logicalshift/flo_draw - I wrote it while working on another project (FlowBetween) where I found debugging would be easier if I could just render something on-screen but rendering stuff on screen always required a ridiculous amount of setup.

It has some nice options for feeding its own output back into itself as it uses streams rather than callbacks so it's quite good for procedural rendering type tasks (the 'Wibble' example is a good place to start with that)

I've been working on one for a while now that's very slowly coming together: 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 has some demonstrations of the sort of procedural animation features I'm planning on adding, for instance.

* Arc from 3 points: There is a Live Path Effect for that.

* tangent/normal to a curve: there is an experimental Live Path Effect for tangent (You can get the normal by just rotating the tangent 90 degrees)

* Measure length: Many ways to get that: e.g. the measure tool. or you can use the Measure segments Live Path Effect.

* Measuring the area: There is an extension: Extensions > Visualize Path > Measure Path.

* Measuring angles: again, you can use the measure tool.

* Library of elements: Inkscape has symbols Objects > Symbols. You can also add you own symbols. See also https://github.com/PanderMusubi/inkscape-open-symbols

* Inkscape snapping is way better (See the new smart alignement snapping in version 1.2).

* Inkscape also prints instruction on how to use tools on the status bar