[osg-submissions] Full double vectors support

[Stephane Lamoliatte]

Hi Robert,

OpenSceneGraph allows us to switch between float and double Matrix at 
compilation time.
I modified OpenSceneGraph and the main CmakeLists.txt to allow us to 
choose between float and double vectors .

I plan to add a "full double support" by defining a real type and let 
the user choose at the compilation time if he wants to use floats or 
doubles type for computations. In this way I expect to reach the 
accuracy that I need for my application.

Do you think osg-users could be interested by this contribution ?
Could you integrate it to OpenSceneGraph ?

Best regards.

--
Stephane