Always zoom by the center of screen, wherever the point I clicked

[Trinea]

Always zoom by the center of screen, wherever the point I clicked
Like below, The map is zoomed always from the middle of the map, no matter where I clicked on the map.

[Trinea]

@jjhurlock

[tobrun]

I was able to make it partially work:

• https://www.dropbox.com/s/hdol2emuyzppumy/device-2016-03-03-102206.mp4?dl=0

but there are some edge cases as rotate that aren't working as expected and will be more work than I initially anticipated. I'm thinking about picking this up as part of #3276.

[Trinea]

ok, Thank you very much.

[bleege]

I tested this again using the latest in the release-android-v4.1.0 branch (where 4.1.0 Final will be built from) and discovered that the zoom on single tap is now using a scaleBy() call to make the zoom towards where the tap was made but not directly on it. From what I understand the need is for the zoom to happen directly on where the tap was made. @Trinea @tobrun Is this correct?

[tobrun]

@bleege this is about altering the focal point of the a gesture. In current implementation we take x,y from the motion event and only support a limited API on MyLocationView for tracking modes:

if (mMapboxMap.getTrackingSettings().isLocationTrackingDisabled()) {
        // Zoom in on gesture
        zoom(true, e.getX(), e.getY());
} else {
        // Zoom in on user location view
        zoom(true, mMyLocationView.getCenterX(), mMyLocationView.getCenterY());
}

Instead of using user location, we should use a user configurable focal point. I'm going to add more information in the related feature ticket. Going to close this in favour of #4924.