Georeferencing

jwelin

Has anyone found a Ruby method to enable the "Use georeferencing" checkbox in Model info:location?
I've scanned the API but no luck.

Jim

Hi John,

I did some playing around... found that a new attribute_dictionary is created when you turn on Georeferencing the fist time - the AD is named "GeoReference"

The dictionary stays when the Georeferencing option is then disabled, but there is a flag in the attribute dictionary itself called "UsesGeoReferencing".


ad = Sketchup.active_model.attribute_dictionary("GeoReference")
#<Sketchup;;AttributeDictionary;0x7524320>
ad.to_a
[["Latitude", 40.017], ["LocationSource", "Manual"], ["Longitude", -105.283], ["ModelTranslationX", -18734219.6437523], ["ModelTranslationY", -174396944.990963], ["ModelTranslationZ", 0.0], ["UsesGeoReferencing", false], ["ZValueCentered", 0.0]]

jwelin

Thanks, Jim.
Working off your observation, I opened a new drawing, and as you said, the attribute dictionary "Georeference" is empty. All the default geodata is in the shadow_info object (or hash, I'm not sure of the proper term). I listed it like this:

    
am = Sketchup.active_model
#<Sketchup;;Model;0x63be010>
am.shadow_info.each{|k,v| puts "#{k} #{v}"}
City Boulder (CO)
Country USA
Dark 45
DayOfYear 312
DaylightSavings false
DisplayNorth false
DisplayOnAllFaces true
DisplayOnGroundPlane true
DisplayShadows false
EdgesCastShadows false
Latitude 40.017
Light 80
Longitude -105.283
NorthAngle 0.0
ShadowTime Fri Nov 08 07;30;00 Central Standard Time 2002
ShadowTime_time_t 1036762200
SunDirection (-0.423824071310226, -0.772439983723215, 0.472979521886207)
SunRise Fri Nov 08 00;43;14 Central Standard Time 2002
SunRise_time_t 1036737794
SunSet Fri Nov 08 10;46;34 Central Standard Time 2002
SunSet_time_t 1036773994
TZOffset -7.0
UseSunForAllShading false
nil

Checking the "Use Georeference" box creates the attribute dictionary and probably uses the shadow_info coordinates to set the lat and long.

I want to programatically check the "Use Georeference" box on a batch of files. I can't assume it exists so I'll need to create the attribute dictionary "Georeference" exactly. I suppose I should make the shadow lat/long and the georeference lat/long match to avoid future confusion.
I this the way to go?

Jim

Hi John,

That seems reasonable to me. It does look like the Lat/Lon are taken from the Shadow_Info, but I have no idea what the other attributes in GeoReference mean. I think you'll just have to experiment until you figure it out.