Touchpad zoom sensitivity very high

The zoom sensitivity setting in TileSet control seems not to do anything. Whether it is 0.1 or 5 the zoom always changes by 1.

The touchpad problem I have on 3 different laptops, so probably my app settings are somehow wrong? The mouse scrollwheel works fine.

I've debugged it deeper, and the UpdateGestureZoomValue method is the only place which uses the zoom sensitivity setting from the tile control. But it is not called at all in my application. Even in the webgl build.

The UpdateZoom() is called, but the zoom delta there is always 1 or -1. In the ZoomOnPoint I get values like 0.2-0.5 while with the mouse plugged and using the mouse scrollwheel the values are 10 times lower: 0.02-0.05.
Both gestures (pinch to zoom and double finger swipe) are too sensitive.

I was thinking maybe I could decrease the zoom delta in general. Delta = 1 is too high for my application. I was trying to set it to 0.5, and it was working OK after some changes, but the methods CoordinatesToTile and TileToCoordinates expect zoom to be an integer, so they are working incorrectly.

Please let me know what can I do with that. Maybe it is important that I'm also using SmoothZoom. I've sent you link to the webgl build.

Thanks for your response. The patch is working, but only if I remove the SmoothZoom. The validation in the SmoothZoomOnMouseEvents does not pass. But the zoomSpeed I think is correct for my application is 0.05. With such low value I think we can like without SmoothZoom.

But this makes zooming with standard mouse scroll very slow. Is it possible to differentiate touchpad gestures from the standard mouse scrollwheel?

And lastly, this patch makes the map zoom to be a float, not an integer. I'm worried if centering map and calculating optimal zoom for positions will work correctly, since the methods there assume that zoom is an integer.

Thanks again for your help.

These methods in OnlineMapsProjection class:

public abstract void CoordinatesToTile(double lng, double lat, int zoom, out double tx, out double ty);
public abstract void TileToCoordinates(double tx, double ty, int zoom, out double lng, out double lat);

have input parameter int zoom. What if zoom is a float?