[osg-users] [forum] Change the position and rotation angle of the camera

[OpenSceneGraph Users]

Hi Becky,

I managed to change the camera position using a manipulator called 
controller.

    viewer.setCameraManipulator(controller);
    viewer.realize();
    // osg::Matrix matrix;
    // matrix.makeLookAt( osg::Vec3(), osg::Vec3(), osg::Vec3() );
    osg::Quat quad;
    // matrix.get(quad);
    controller->setTransformation(osg::Vec3(-54.4f,-14.3f,80.0f), quad );
    while ( !viewer.done() )
    {
        viewer.frame();
    }
    return 0;

The commented lines were not necessary for me, but may be in other 
situations.

Best,
Rodrigo.


On Tuesday, April 1, 2014 at 6:37:24 AM UTC-3, ying song wrote:
>
> Hi, 
>
> I draw a box using addDrawable. Then I want to change the position and 
> rotation angle of the camera  by: 
>
> viewer->getCamera()->setViewMatrix(cameraTranslationMatrix); 
>
> But actually it makes no change to the camera. The cube is still in the 
> center of the screen after run the scene. 
>
> I also tried to update the frame by using the following code, but also 
> failed: 
>
> while(!viewer->done()) 
> { 
>         viewer->getCamera()->setViewMatrixAsLookAt(eye,center,up); 
>         viewer->frame(); 
> } 
>
>
> Would anyone tell me what could I do to move the camera? 
>
> Thank you! 
>
> Cheers, 
> Becky 
>
> ------------------ 
> Read this topic online here: 
> http://forum.openscenegraph.org/viewtopic.php?p=58769#58769 
>
>
>
>
>
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