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Woooow that zooooom (MacBook Trackpad) #2

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Martin-Pitt opened this issue Feb 15, 2017 · 1 comment

Martin-Pitt commented Feb 15, 2017

The zoom is super fast on the trackpad.

I'd recommend borrowing the work from @jakearchibald's implementation of pan-zoom from SVGOMG:
https://github.com/jakearchibald/svgomg/blob/master/src/js/page/ui/pan-zoom.js

Another useful source is: https://www.npmjs.com/package/normalize-wheel

jakearchibald commented Feb 16, 2017

I started building a web component that does this, and also supports native panning. https://github.com/jakearchibald/pinch-zoomer/blob/master/index.js - haven't quite finished it yet, but the hard parts (the maths) are all there.

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