Previously, {-y} only worked for the standard web mercator tile grid. Now
a tile grid with an extent is required (which we get from
ol.tilegrid.createXYZ() anyway), and then the y calculation for TMS style
tile grids works as expected.
By default, zooming in or out zooms using the mouse's location
as an anchor, which makes it possible to navigate the map
using scrolling only, and makes zooming in more intuitive.
This commit adds a new useAnchor option to the MouseWheelZoom
interaction. It is enabled by default, which changes nothing
to the current behavior of the interaction. When disabled,
the interaction stops registering its lastAnchor_ value. This
turns the zoom into a very basic one, that zooms to the center
of the screen.
To use the map center zoom, set the useAnchor option to
false when creating the MouseWheelZoomInteraction, or use its
setMouseAnchor function.
This commit allows setting a z-index property on the layers and uses
it in the canvas, WEBGL and DOM map renderers for ordering the layers
before rendering.
Default z-index is 0 for managed layers and 1000 for unmanaged ones.
It allows always on bottom, always on top and more complex layer layouts.
This commit adds an `extend` method to the draw interaction. This method makes it possible to extend (continue drawing) an existing line string feature. It only works on line string features, where this functionality makes the most sense.
Here's an example on how to use `extend`:
```js
var vectorSource = vectorLayer.getSource();
vectroSource.removeFeature(feature);
drawInteraction.extend(feature);
```
Added the getUrls method to get access to the url / urls property.
When using a tileUrlFunction, getUrls should return null.
This should fix issue #3886
This allows features to be moved around the map. It works much like the Modify interaction, however it's significantly simpler. It uses the geometry's underlying `translate` function.
