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Rename ol.View2D to ol.View

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This commit is contained in:
Tim Schaub
2014-06-26 16:51:26 -04:00
parent b9f444a008
commit 47d37fabea
98 changed files with 302 additions and 302 deletions
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8
doc/tutorials/concepts.hbs
View File

@@ -16,16 +16,16 @@ The core component of OpenLayers 3 is the map (`ol.Map`). It is rendered to a `t
```
## View
`ol.Map` is not responsible for things like center, zoom level and projection of the map. Instead, these are properties of an `ol.View` instance - typically an `ol.View2D` for 2D maps. The reason for this abstraction is the idea of instantly switching e.g. between a 2D and a tilted 3D view, without the need to maintain two copies of the `layers`.
`ol.Map` is not responsible for things like center, zoom level and projection of the map. Instead, these are properties of an `ol.View` instance.
```js
map.setView(new ol.View2D({
map.setView(new ol.View({
center: [0, 0],
zoom: 2
}));
```
An `ol.View2D` also has a `projection`. The projection determines the coordinate system of the `center` and the units for map resolution calculations. If not specified (like in the above snippet), the default projection is Spherical Mercator (EPSG:3857), with meters as map units.
An `ol.View` also has a `projection`. The projection determines the coordinate system of the `center` and the units for map resolution calculations. If not specified (like in the above snippet), the default projection is Spherical Mercator (EPSG:3857), with meters as map units.
The `zoom` option is a convenient way to specify the map resolution. The available zoom levels are determined by `maxZoom` (default: 28), `zoomFactor` (default: 2) and `maxResolution` (default is calculated in such a way that the projection's validity extent fits in a 256x256 pixel tile). Starting at zoom level 0 with a resolution of `maxResolution` units per pixel, subsequent zoom levels are calculated by dividing the previous zoom level's resolution by `zoomFactor`, until zoom level `maxZoom` is reached.
@@ -63,7 +63,7 @@ The above snippets can be conflated to a self contained map configuration with v
layers: [
new ol.layer.Tile({source: new ol.source.OSM()})
],
view: new ol.View2D({
view: new ol.View({
center: [0, 0],
zoom: 2
}),