Topic: google earth terrain import lisp ?

[dussla]

hi firend
i made other problem ?
i got some mounatain dwg files from client
but that is not complete
so i found google earth tool
but some is diffciulty

i would like to    import   terrain 3d file and   detailed image file  about big area
is that possilbe work ?

[huiz]

You can do that in Civil3D. Or there might be a Labs tool from Autodesk that imports GE data, but I'm not sure if that still works and what it does.

[Vali]

I hope I didn't opened a can of worms.

MicroStation does import from GE. Then you can export to ACAD.

Regards,
Vali.

[ziko30]

I use AutoCAD MAP 3D and I can do the functions below:

Capture current google earth view and import as raster image

Capture elevation data of the current google earth view and import as mesh

The attachment is an image of what I can capture although if I did import it into AutoCAD, it would be black and white.  I imagine you could have it in color using Google Earth Pro...

[yarik]

Hi dussla!

Maybe you can make trought Google API
Try this

Code: [Select]

(setq earth_application(vlax-create-object "GoogleEarth.ApplicationGE"))
(vlax-dump-object earth_application t)
; Property values:
;   AnimationController (RO) = #<VLA-OBJECT IAnimationControllerGE 00203194>
;   AutoPilotSpeed = 4.434
;   ElevationExaggeration = 0.5
;   SearchController (RO) = #<VLA-OBJECT ISearchControllerGE 001f30b4>
;   StreamingProgressPercentage (RO) = 100
;   TourController (RO) = #<VLA-OBJECT ITourControllerGE 00200354>
;   VersionAppType (RO) = 5
;   VersionBuild (RO) = 1
;   VersionMajor (RO) = 5
;   VersionMinor (RO) = 2
;   ViewExtents (RO) = #<VLA-OBJECT IViewExtentsGE 00203f54>
; Methods supported:
;   GetCamera (1)
;   GetFeatureByHref (1)
;   GetFeatureByName (1)
;   GetHighlightedFeature ()
;   GetLayersDatabases ()
;   GetMainHwnd ()
;   GetMyPlaces ()
;   GetPointOnTerrainFromScreenCoords (2)
;   GetRenderHwnd ()
;   GetTemporaryPlaces ()
;   HideDescriptionBalloons ()
;   IsInitialized ()
;   IsOnline ()
;   LoadKmlData (1)
;   Login ()
;   Logout ()
;   OpenKmlFile (2)
;   SaveScreenShot (2)
;   SetCamera (2)
;   SetCameraParams (8)
;   SetFeatureView (2)
;   ShowDescriptionBalloon (1)

[danallen]

Sketchup will import from google earth as a TIN with image mapped to faces. You can export the geometry to AutoCAD with the Pro version, and the free download gives you 8 hours of working time. The resolution of the TIN varies with your scale, but you can import multiple overlapping areas, though there are some issues with the TIN not lining up but that can be resolved sketchup scripts. The images are trickier because I believe they are skewed in Sketchup to better map to the geometry, but AutoCAD can't import that.

Here is a thread on importing, the same group has other info in the archives.
http://forums.sketchucation.com/viewtopic.php?f=15&t=32325

[pedroantonio124]

Hi

(vl-load-com)
(setq earth_application(vlax-create-object "GoogleEarth.ApplicationGE"))

-> result nil

 i have Google Earth 6 installet.

[Lee Mac]

Have you tried this by VovKa?

[pedroantonio124]

Hi Lee,

i  need to import the terrain (altitude points)

Code: [Select]

(defun getzfrompoint (lon lat / z GE keyhole)
  (vl-load-com)
  (if (setq GE  (vlax-get-or-create-object "GoogleEarth.ApplicationGE") keyhole (vlax-get-or-create-object "Keyhole.khInterface"))
    (progn
      (while (/= 1 (vlax-invoke-method GE 'isinitialized)))
      (while (/= 1 (vlax-invoke-method GE 'isonline)))
    )
  )
  (vlax-invoke-method
    keyhole 'setViewParams lat lon 1000   0 0 5 5)
  (setvar 'cmdecho 0)
  (while (/= z
        (setq z
          (caddr
            (vlax-invoke
         keyhole
         'GetPointOnTerrainFromScreenCoords
         0
         0
            )
          )
        )
    )
  )
  (setvar 'cmdecho 1)
  (vlax-release-object GE)
  (vlax-release-object keyhole)
  z
)


[dgpuertas]

From vodka too,

Code - Auto/Visual Lisp: [Select]

1.  
2.  (defun vk_GetGEarthElevation (lat lon)
3.   (atof (last (assoc "elevation" (last (assoc "result"
4.                       (last (assoc "ElevationResponse" (vk_ReadXML
5.                                  (strcat "http://maps.googleapis.com/maps/api/elevation/xml?locations=" (rtos lat 2 16) "," (rtos lon 2 16))))))
6.              )))))
7.  

[VovKa]

From vodka too,

[ymg]

pedro,

The API in Google Earth is no longer supported.

I believe the last version for which the method
GetPointOnTerrainFromScreenCoords was supported
was 6.1.5001

Furthermore GE would limit you to 5000 pts a day.

So, VovKa's method should be preferred.  Don't
know if they limit you there also.

Here is a link to better data for GE in the form of a kmz file:

ftp://topex.ucsd.edu/pub/srtm15_plus/SRTM15.kmz

ymg

[pedroantonio124]

Hi ymg

the problem is that with the method from
VovKa there is a restriction of 2,500 requests per day.


The Elevation API has the following limits in place:
Users of the free API:
        2,500 requests per 24 hour period.
        512 locations per request.
        5 requests per second.

Is there no possibility to receive the elevation data from Google Earth? and to steer Google Erath?

[ymg]

Pedro,

Like I told you, the API on GE is no longer
active and was limited to 5000 pts a day.

Furthermore, GE elevation data was never too accurate.

For a free source of good elevation go to Jonathan de Ferranti's site
and download the file for the zone you need or the whole world
if you feel like it.

http://www.viewfinderpanoramas.org/dem3.html

ymg

[alanjt]

Running version: 7.1.2.2041 and the api still works for me.