evec VS plutovg

There's a few ways to address this. This library has a good explanation of one of them here.

It's a good exercise to do this for yourself, but if you're doing this more than once, you might want to look at an existing dynamic array implementation that you can just drag in to your work. There are many of these, if you google for "dynamic array" you'll find lots of implementations. Personally I quite like this one.

Take a look here for an example that is relatively easy to read and understand (but not the best performance): https://github.com/mgrosvenor/evec

Here’s a super easy to use dynamic array (vector). It will grow to accommodate more entries so it’s “safe” from the issues you mention: https://github.com/mgrosvenor/evec

There's LOTs of libraries. I wrote one: https://github.com/mgrosvenor/evec

I'm curios how evec stands up with your testing. Especially with/without pedantic mode (`#define pedantic 0` vs #define pedantic 1`).

Sub-pixel positioned anti-aliased lines and dots are simple. Extending that idea to drawing any shape is far more fiddly. I found this excellent rasteriser and this article which explains how it works. PlutoVG wraps that rasteriser in an easy-to-use API. I'm very happy with the results.