Hi  João,

The OSG coordinates system is governed by the data you pass it, so if your
data is in inches then a unit of 1 will be 1 inch.  Certain parts of the
OSG are built around metres though - the EllipsoidModel used for whole
earth applications/terrain is in metres.  This means if you build a
geocentric database with osgEarth or VirtualPlanetBuilder they will have
databases in metres.

Another area where the OSG loosely assumes metres is the the
osgGA::DriveManipulator - it's height above the terrain assumes the units
are in metres.

So... in general I'd guess most OSG applications will be in metres, but
there isn't a strict requirement in most parts of the OSG, it'll quite
happily just handle whatever units you pass in and is mostly unit agnostic.

Robert.


On 2 April 2015 at 23:43, João <[email protected]> wrote:

> Is there any correlation between world coordinates and real-world
> distance, such as meters? For instance, is the point (1,0,0) located 1
> meter in the X axis, and if not, is there any way to correlate the two?
>
> I ask this because I'm working with a kinect, and it returns coordinates
> in meters within the reference frame of the kinect.
>
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>
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