akilan 发表于 2022-7-7 17:03:54

True north construction?

Hi
 
I am making use of some of the building models created using CAD.
Since the models are added to virtual earth, I would like to get clarified for few of my doubts,
 
1) say, when the buildings of true representation on ground is made, whether any reference axis with respect to ground is considered to build the model?
 
2) How the scaling is made for the same model with respect to ground?
 
 
Thanks
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