How to custom mouse wheel zoom in&out factor

冠廷陳

Because the mouse wheel delta value always is 120/-120, and the zoom in&out factor of mapview is *2 or /2.  So the mapview scale will be fix in some value.

 

Problem:

How to custom zoom in&out value or function let mapview scale be more flexbility?

SomeGISGuy

You can set the zoomfactor here: https://developers.arcgis.com/net/api-reference/api/netwin/Esri.ArcGISRuntime/Esri.ArcGISRuntime.UI.InteractionOptions.ZoomFactor.html

mapView.InteractionOptions = new Esri.ArcGISRuntime.UI.MapViewInteractionOptions() { ZoomFactor = 1.5 };

> Because the mouse wheel delta value always is 120/-120

Some mice reports much smaller (but more frequent) intervals - in that case zooming switches to a much more discrete amount of zoom.

Also try shift + drag to create a zoom box (ctrl+shift+drag to zoom out).