On 8/12/2011 11:11 AM, Sanat Talmaki wrote:
Hi Paul,
Sorry for my late reply to your post. That is a very good point you bring up
about the units of different objects in a scene. When one uses data from USGS
in VPB to create a terrain, the rest of the objects have to be scaled up or
down to represent their real world size prior to be being used in the
scene.......
But the confusion for me arises when say I load a truck in osg and its
dimensions are (12, 6, 8) = (L,W,H). (don't know what units these are in)
Without knowing the units of the model (whether 12 feet/meters), how does one
apply a scaling factor?
As I said in my previous post, if you don't have access to any metadata that
tells you what the units are, there's no way for your software to handle this in
an automated way. You must either manually scale the model to fit your
application coordinate system, or you must manually create some metadata. In the
case you cite, both options would be based entirely on guesswork.
-Paul
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