This allows users to control whether 3d acceleration should be used or not:
Just like with plain web pages, having a stylesheet that sets a transform
on the map's layerContainerDiv will make OpenLayers use translate3d and
scale3d. When no such transform is set in the stylesheet, style.left and
style.top will be used, except for e.g. pinch zoom, where scaling is
needed.
The navigation control gets better defaults, and the MouseWheel handler
gets a new maxDelta option, which can be used to avoid huge zoom level
jumps on heavy wheel/pad movements.
Having the TileManager remove an image from the DOM, then setting the
cached image, and then having to position it felt a bit awkward. With the
new beforeload event, the setImage method and putting renderTile before
positionTile, providing the cached image feels way more natural.
We now reuse tile images by maintaining a cache of image elements with a
simplified LRU expiry policy (by order, not by timestamp). The tile queue
is bypassed for images that are available in the cache, so they can be
rendered immediately. And the tile queue itself loads more than just one
image at a time now (2 per layer url).
Previously, minFrameRate could not be set as option with the start method.
The tests failed to catch this flaw. Now both the start method and the
tests are fixed.
OpenLayers.INCHES_PER_UNIT.m should equal
OpenLayers.INCHES_PER_UNIT.Meters, just like OpenLayers.INCHES_PER_UNIT.km
should equal OpenLayers.Inches_PER_UNIT.Kilometers. This confusion probably
comes from mixing International inches with US Survey inches when compiling
the unit conversion list (1 meter is 39.37007874 International inches, but
39.37 US Survey inches. It may not be obvious, but 'inches'/'Inch' in
OpenLayers means US Survey inch, and 'IInch' means International inch).
This change also fixes offsets caused by incorrect resolution calculations in
OpenLayers.Format.WMTSCapabilities.
The new minFrameRate option is used to make sure that an animation does not
run longer than the time calculated from that frame rate. Time is made up
by skipping frames, i.e. skipping execution of the eachStep callback.
This avoids issues with Elements renderers, where the nodeFactory method
cannot find nodes while the map viewport is transitioning from the mapDiv
to the googleControl.
Simple and effective: As soon as a map has a Google layer, the whole map viewport is added as control to the GMap. As soon as no Google layer is visible on the map any more, the map viewport is appended to the map container again. With this change, OpenLayers strictly limits its GMaps integration to the GMaps API.
Also note that there are no css overrides for the attribution any more. Instead, controls can now be conditionally positioned differently for Google layer by using the .olForeignContainer selector.
