[JAVA3D] Retriving Viewing parameters

[Juan Miguel]

Hi Everybody I have a question:   " Is it possible to represent parameters that a virtual camera model has, via   Transform3D t3d1=new Transform3D();           universe.getViewingPlatform().getViewPlatformTransform().getTransform(t3d1);           ?"   I need a vector known as UP  and it's often represented as a unit vector, in order to set the orientation of the camera. I also need where camera is looking at... the focus point.     Considering the fact that there's a translation applied to the viewingplatform of <0,0,1/(tan(fieldOfVIew/2))>  or <0,0,2.41.....> using universe.getViewingPlatform().setNominalViewingTransform();   All that I can infer is that the initial UP vector is set to : <0,1,0>  and maybe the focus is <0,0,0>     The point here is, that, I developed a J3d application wich is meant to navegate through a  simple scene graph taking advantage of the orbit behavior. But I don't know exactly where the camera is, and where is appointing to, neither which is its orientation; and it's imperative to know this because another ray tracing application needs this info.     I hope you can tellme how can I achieve this. Thank you