[osg-users] Eye position and 2nd slave camera
petr srom
srom at jkzsim.cz
Tue Mar 31 01:20:01 PDT 2009
Hi,
please, can you tell me why the camera_slave have got the same position (eye) as the camera_main? What I'am doing wrong? I cannot set different position and frustum than is in camera_main? The camera slave take (inherit) the setting of camera main? Here is the code:
void MultiCameras::multipleCameras(osgViewer::Viewer *viewer)
{
camera_main_create(viewer);
camera_slave_create(viewer);
}
void MultiCameras::camera_main_create(osgViewer::Viewer *viewer)
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc);
camera->setViewport(0, 0, 650, 500);
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
camera->setClearColor(mv4f_clearcolor);
camera->setProjectionMatrixAsFrustum(-2.0,2.0,-2.0,2.0,5.0,50.0);
mv3f_eye.set(20.0f,20.0f,3.0f);
camera->setViewMatrixAsLookAt(mv3f_eye, mv3f_center, mv3f_up);
viewer->setCamera( camera );
}
void MultiCameras::camera_slave_create(osgViewer::Viewer *viewer)
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc);
camera->setViewport(0, 510, 650, 200);
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
camera->setClearColor(mv4f_clearcolor);
camera->setProjectionMatrixAsFrustum(-8.0,8.0,-2.0,2.0,5.0,50.0);
mv3f_eye.set(20.0f,5.0f,0.0f); //it doesn't work ?
camera->setViewMatrixAsLookAt(mv3f_eye, mv3f_center, mv3f_up);
viewer->addSlave(camera.get());
}
Thank you.
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http://forum.openscenegraph.org/viewtopic.php?p=9479#9479
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