What is possible and what is not?

openlayers / ol-cesium

OpenLayers - Cesium integration

http://openlayers.org/ol-cesium/

BSD 2-Clause "Simplified" License

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What is possible and what is not? #435

Open strech345 opened 7 years ago

strech345 commented 7 years ago

Hello, for me it is not really clear what functionalities i will get from ol3 and cesium.

Does i have the full features of Cesium? for example ...

Loading different elevation models
new 3D vector tiles (http://cesiumjs.org/2015/08/10/introducing-3d-tiles/)
3d models in gltf
loading primitive
Plugins (for example cesium-navigaton https://github.com/alberto-acevedo/cesium-navigation)
Interactions

Does it have the full features of OL3 ? for example ...

Heatmaps
Clustering of Marker
loading Vector Tiles
loading KML, Json,...
Interactions

Would be great to get a comsumption about what is possible and what's not.

jmgomezpoveda commented 7 years ago

A lot of things work. Now, I don't know about most of these, but I do know about a few of them:

Interactions do not work; you have to use Cesium calls for that
KML works, and clustering of markers, though there are some glitches (https://github.com/openlayers/ol3-cesium/issues/345, https://github.com/openlayers/ol3-cesium/issues/346)

gberaudo commented 7 years ago

You create and pass the OL map so you have full control on it. The Cesium globe is created by OL3-Cesium but you get notably the reference to the Cesium.Scene, you can then use the Cesium API.

For missing features it is possible to:

improve OL3-Cesium by contributing patches;
use hooks to implement own logics (eg synchronize a raster layer in OL3 to a vector layer in Cesium / gltf ...)

strech345 commented 7 years ago

@gberaudo for me it is important to have the reference on cesium viewer also and to control it like i want. It would be nice to create boath instances (ol3 and cesium) and to use this framework to connect boath with each other. But i think this will not be the case.

@jmgomezpoveda So. its possible with cesium feature request to request also ol3 features?

jmgomezpoveda commented 7 years ago

@strech345 I am not sure I understand your question. With ol3-cesium you use the same API as ol3, and ol3-cesium internally translates the API requests into the Cesium API. You create the map once and you are able to switch between the ol3 and Cesium views at will.

In most cases you only need to use the ol3 API for this. In some cases, though, you may need to interact directly with the Cesium object exposed by ol3-cesium.