openlayers/openlayers — pull request #483 by gregersrygg (2012-05-22 15:52:35+00:00)
Title: Improve analog mouse wheel zooming

It is almost impossible to zoom in a controlled manner using an Apple Magic Mouse (http://www.apple.com/magicmouse/), trackpad or any other input device with analog scroll values instead of step-scrolling. With maps that have enabled fractional zoom, the zoom level should not be rounded. I couldn't think of a reason to have an extra option to enable/disable this feature in addition to fractionalZoom, so it's not possible to avoid this change. Not sure if that's a bad idea or not?

Tried to avoid re-tiling when in-between server zoom levels for Grid.js to avoid flickering, but after multiple attempts I gave up. Hope someone can help to avoid the flickering-issue.