SolidJS•2d ago

@solid-primitives/spring: obtain velocity?

is there some way I can obtain the velocity of the spring? xy: I want to detect if the popup is being dragged faster than x pixels, to then dismiss in a "flick" mode

8 Replies

Andreas Roth•15h ago

https://github.com/solidjs-community/solid-primitives/blob/main/packages/spring/src/index.ts Doesn't seem like it. It only returns the signal with the current value. You could copy the source code and adapt it accordingly.

GitHub

solid-primitives/packages/spring/src/index.ts at main · solidjs-com...

A library of high-quality primitives that extend SolidJS reactivity. - solidjs-community/solid-primitives

bigmistqke•14h ago

I guess you can always calculate it too outside the primitive (save time + previous value), but could be a cool addition to the primitive (wdyt @thetarnav ?)

thetarnav•14h ago

you mean access to internals?

bigmistqke•14h ago

Uhu

thetarnav•14h ago

yeah that sounds good but it’s usually difficult to keep the api “slick” unfortunately

bigmistqke•14h ago

I had something in my mind, but doesn't work actually. Maybe just calculating it in userland is the cleanest. Could do an option and then return { value, velocity } Or attach it to the signal

const spring = createSpring(...)
spring() // value
spring.velocity()

const spring = createSpring(...)
spring() // value
spring.velocity()

is a bit esoteric

thetarnav•14h ago

yeah that’s what I mean also now you need to make velocity a separate signal

bigmistqke•14h ago

velocity could be () => { value(); return velocity }

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@solid-primitives/spring: obtain velocity?

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