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tween-svg-path

v2.0.6

Published

High performance & lightweight tween interpolation for svg paths

Downloads

100

Readme

Tween svg-path

High performance & lightweight tween interpolation for svg paths

Example

This takes an svg path element and interpolates it to the given path over the duration of 1000ms.

import tweenSvgPath from "tweenSvgPath"

let fromSvgElem = document.querySelector("#svg path")
let toSvgPath   = "[your to svg path]"
let duration    = 1000

let tweeny = tweenSvgPath(fromSvgElem, toSvgPath, duration)

If you like to manually control the update cycle, set the optional parameter run to false.

let run = false

let tweeny = tweenSvgPath(fromSvgElem, toSvgPath, duration, run)
console.log(tweeny.update(500))

This way you could sync the animation up to something like a scroll position.

To manually tween it over a timeline (like in the example above) use animation-frame-delta as it has been extensively tested to work well together.

import animationFrameDelta from "animation-frame-delta"

animationFrameDelta((progress) => {
  tweeny.update(progress)
}, duration)

// or the more cool but less readable version

animationFrameDelta(tweeny.update.bind(tweeny))

Additionally the distribution can be controlled as well. To do so, dont give a SVGPathElement as from parameter but a string.

let fromSvgPath = "[your from svg path]"
let toSvgPath   = "[your to   svg path]"

let tweeny = tweenSvgPath(fromSvgPath, toSvgPath, duration)

const elem = document.querySelector("#svg path")
tweeny.onUpdate((interpolatedSvg) => {
  elem.setAttribute("d", interpolatedSvg)
})

Paths can be given in parsed fashion (as type Segments = (string | number)[][]) as well. The output will not be stringifyed to a svg path like in the examples above.

Note: The libraries parse-svg-path, abs-svg-path and normalize-svg-path provide parsing to the mentioned Segements type.

import * as parse from "parse-svg-path"
import * as abs from "abs-svg-path"
import * as normalize from "normalize-svg-path"

let fromPathSegments = normalize(abs(parse("[your from svg path]")))
let toParsedSegments   = normalize(abs(parse("[your to   svg path]")))

tweenSvgPath(fromPathSegments, toParsedSegments, duration).onUpdate((interpolatedPathSegmenets) => {
  console.log(interpolatedPathSegmenets)
})

Conribute

All feedback is appreciated. Create a pull request or write an issue.