Lat/Long in Web Scene

[Anonymous User]

Original User: miglanisomil

Hello,

I am looking for a way to fetch the latitude longitude of a point through the web scene just like in city engine. Now, I know the extent of the scene in Lat/Long and the extent of the scene in the scene coordinate system (Cartesian). One way is to interpolate/extrapolate between the two using the extents, but this is a bit complicated. Is there a way to directly get the Lat/Long value of a point in the web scene? Or an easier way to do this? any suggestions are helpful.

Thanks,
Somil Miglani

[Anonymous User]

Original User: matthiasbuehler

Hi,

No, bad news, this is not possible with the WebViewer at this point in time.

As the name implies, it's a viewer of 3d geometries, so the actual georeferencing data is not needed for this, thus dropped to save resources.

Ok ?

Matt

[Anonymous User]

Original User: miglanisomil

Hello Matthias,

Thanks for the reply. Too bad.

Okay!
Somil

[AlexandruVasile2]

Is it possible to get the lat/long of a scene inside CE? (not in the web scene)

I need to know the lat/long of the corners of the Terrain

I see the x and z offsets, but i have no idea how to convert them to lat/long.

Thanks

[ThomasFuchs]

Hello Alexandro Vasile

The corners of the terrain are given in the projected scene coordinate system you have set in the your CityEngine scene.

CE help on: Scene Coordinate System 

A quick way to show lat/long coordinates of the Terrain corner would be:

1. Set the  View Coordinate System  to Long/Lat [decimal degrees]
2. Set the camera to top
3. Zoom into the corner of the terrain that correspondents to the x and z offset point
4. Write down the displayed lat/long values

[AlexandruVasile2]

Hi Thomas,

Thank you very much for the response

This is very helpful (really what i needed). But I still don't get the relation between the lat/long and the x/z-offsets.

Also, is there a way to extract them (not writing them down manually)? I found the python function getPosition, but it returns the x,y,z.

Thanks and have an amazing day

[LR]

Last time I tried to get the coordinates (of building polygons) in lat/long I ended up writing my own coordinate transformation in Python. The formulas depend on the current and target coordinate system, but you should be able to google up the right formulas. A little warning, it's not going to be as simple as x2 =x1*2+20 . 

[AlexandruVasile2]

In that case, I'll stick to writing it manually

thanks