Community
InfraWorks Forum
Welcome to Autodesk’s InfraWorks Forums. Share your knowledge, ask questions, and explore popular InfraWorks topics.
cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Can AIM model curvature of the earth?

9 REPLIES 9
SOLVED
Reply
Message 1 of 10
JamesMaeding
1507 Views, 9 Replies

Can AIM model curvature of the earth?

I know it uses a tin surface, which cannot wrap under itself, but if I choose a coordinate system like UTM 11, will it drape that surface around a globe? (like google earth)

any suggestions on tools that can do that besides google earth?

I have arcscene and manifold gis progs, just never cared about the effects of earth curvature on what  given viewpoint can see.


internal protected virtual unsafe Human() : mostlyHarmless
I'm just here for the Shelties

9 REPLIES 9
Message 2 of 10
spatialguru
in reply to: JamesMaeding

The two that come to mind are ossimPlanet and WorldWind (though I don't know WW really much at all).  ossimPlanet is totally built on a global model and can do some great stuff.  You'll probably want to extend it further for your particular solution but it might be more inspiring than google earth at this point.

 

Enjoy!

 

http://trac.osgeo.org/ossim/wiki/OssimPlanet

http://download.osgeo.org/ossim/installers/

Geo-geek, Publisher, Author
http://LocatePress.com
http://WebMappingIllustrated.com
http://actian.com/products/ingres/geospatial
Message 3 of 10

Yes, AIM supports the earth curvature automatically...



Konstantin.B
Software Architect
Message 4 of 10

what do you mean by support though? Does it always use a "foundation" of a globe?

I would think it depends on the models coordinate system, projected or a non-projected system.

Another interesting issue is atmospheric diffraction, which I heard usually takes away about 1/2 the effect of curved earth.

So you see over the horizon a bit as light follows the earth. Now that would be an impressive model!


internal protected virtual unsafe Human() : mostlyHarmless
I'm just here for the Shelties

Message 5 of 10

AIM requires you to correctly geo-reference your model and based on that can support the earth curvature automatically for all projects... just make them large enough and you will see...

 

About the atmospheric diffraction you mentioned: I would not expect that in the very near future... 🙂



Konstantin.B
Software Architect
Message 6 of 10
JamesMaeding
in reply to: JamesMaeding

I will try using UTM or something


internal protected virtual unsafe Human() : mostlyHarmless
I'm just here for the Shelties

Message 7 of 10
spatialguru
in reply to: JamesMaeding

Totally off topic from AIM, but I forgot to mention, depending on capabilities you need or real-time spatial dynamics, you might also be interested in http://cesium.agi.com/ 

Geo-geek, Publisher, Author
http://LocatePress.com
http://WebMappingIllustrated.com
http://actian.com/products/ingres/geospatial
Message 8 of 10

Hello

 

If you choose an UTM zone you will restrict your model extend to the valid extend of that specific UTM zone. To work in a world context, it is best to use a worldwide valid coordinate system (CS). Therefore I would recommend not to change the database CS as LL84 is worldwide valid.

 

You will not gain anything by changing the database CS and you can still change the display of the coordinates any time by modifying the User Coordinate System.

 

Heiko



Heiko Meyerdirks
Senior Manager, Engineering
AEC Design-BID-Infrastructure
Message 9 of 10
JamesMaeding
in reply to: JamesMaeding

ah, thanks for the tip.

I tend to use CA state plane zone 6 prettymuch all the time, so am less educated on the "global" coordinate systems other than figuring out which one is used by a given chunk of data.


internal protected virtual unsafe Human() : mostlyHarmless
I'm just here for the Shelties

Message 10 of 10
BrianHailey
in reply to: JamesMaeding

Here's an example of AIM showing curvature of the earth:

 

http://screencast.com/t/xqXvIZxULN

 

 

Brian J. Hailey, P.E.



GEI Consultants
My Civil 3D Blog

Can't find what you're looking for? Ask the community or share your knowledge.

Post to forums  

Rail Community


Autodesk Design & Make Report