21 lines
1.1 KiB
Markdown
21 lines
1.1 KiB
Markdown
Finding your way around
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-----------------------
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See the class list to the right and especially take a look at {@link ol.Map} and {@link ol.layer.Layer} because those are the central objects.
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In general every use of OpenLayers starts by initializing a map, then adding the required layers. Controls and interactions can be added to change the behavior of the map.
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Projections
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-----------
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A {@link ol.proj.Projection} defines which point on earth is represented by a pair of coordinates.
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Coordinates within OpenLayers can be used in various projections where some common projections are always supported,
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others can be used via [Proj4js](http://trac.osgeo.org/proj4js/).
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Maps and Layers
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---------------
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A map in OpenLayers is essentially a staple of layers that is viewed from the top. Layers are responsible for retrieving data and displaying it.
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Contributing
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------------
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See [CONTRIBUTING.md](https://github.com/openlayers/ol3/blob/master/CONTRIBUTING.md) for instructions
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on building and testing OpenLayers. The file does also describe how to commit your changes to OpenLayers.
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