Smooth zoom with mouse wheel

CesiumJS
1

Hi, is there any way to make the zoom smooth when using the mouse wheel

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2

This request is currently being tracked in Zooming with the mouse wheel is jumpy ¡ Issue #4537 ¡ CesiumGS/cesium ¡ GitHub. It would be possible to implement some inertia with the zoom so that the mouse wheel zooms in and out smoothly.

3

I’ve tried using “inertiaZoom” to reproduce smooth zoom, but nothing happens when changing. Here is the link to sandCastle Cesium Sandcastle

4

Thanks for trying, but this would require a change in the CesiumJS library itself.

We are happy to review a PR if you’re interested in contributing a fix! Without the fix, you will need to write custom camera behavior the handle the mouse wheel.

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5

I hope this function can also be realized in scrolling zoom

6

This is an interesting issue, I can see the ‘jumpiness’ with a traditional scrollwheel mouse, but with an Apple Magic Mouse (no scrollwheel, but a multi-touch surface) zooming is super-smooth. That indicates the jumpiness is not caused by Cesium, but rather by the mouse hardware itself. I wonder then what change would be required in Cesium. Obviously you can’t just tell everyone to buy a Magic Mouse, but still…

7

For a touchbar, cesium has a smooth zoom. The Apple Magic Mouse is a hybrid of a mouse and a touchpad, so camera movements are smooth. In other words, the Apple Mouse is an unconventional mouse.