Hacker News

Variable-width Bézier curves (2025)

38 points by leduyquang753 ago | 11 comments

WillAdams |next [-]

In case the author reads this:

>The stroke boundary algorithm could be extended to 3D by generating a ring (instead of a pair) of stroke boundary points at each sample point. I do not know of compelling uses for such a 3D element.

That would actually be an excellent way to describe a V-carving toolpath for a CNC router.

WillAdams |root |parent [-]

And now that I think about it --- didn't one of Wacom's Kai/Photoshop plug-ins work in this was to allow incising into a virtual surface?

AlphaCerium |next |previous [-]

It's a breath of fresh air to see an article that so clearly and carefully explains a concept amongst the sea of llm-prose.

xigoi |previous [-]

Why is there not a single picture in an article about Bézier curves?

dvh |root |parent |next [-]

Waterluvian's Law is the why:

> The more an article would benefit from photos, the less likely it’ll have them.

AnthonBerg |root |parent |next |previous [-]

visualizations that pop out from triangles

eviks |root |parent |previous [-]

Because you didn't read the article to notice them

xigoi |root |parent [-]

I don’t want to read an article on how to draw something if I can’t even see what the result will look like.

smrq |root |parent [-]

Parent's point is that there are in fact seven animated visualizations in this very article.

xigoi |root |parent [-]

Ah, they’re hidden inside the “algorithm” boxes (and also don’t display properly in dark mode). What an unintuitive place to put them – I’d expect an algorithm box to only contain pseudocode, with the output being in a different box.

eviks |root |parent [-]

why would you expect "(with visualization)" boxes to only contain pseudocode?