Is it possible to avoid kinks when applying corner components to curves such as this? It seems to me like it should be possible to get the tangent angle at connection t and slant the corner to it more precisely?
Simply slanting the corner to fit the angle would only work to an extent, for a number of reasons:
- It assumes that the corner component itself starts at 0°.
- Slanting a curve leads to deformation (the reason why obliques need optical correction).
Accounting for the second problem is possible, but presupposes a specific outline structure (essentially condition #1).
Is that different from matching straight segments though? What makes corner components great is that they dynamically adapt to shapes, so if it can do this, it should be equally possible to match a curve’s angle at the t:
Sure but that’s the design part of it, whereas my complaint is merely technical 
I WISH
One of my current projects required me to decompose all those situations and even use quadratic segments due to the large design space.
I have an idea to improve this. I’ll hope that I get try this, soon.
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You can use my Rounded test font, if you still got it.