do you have an active motion model, ? Yes, the motion model overwrite each
frame the view's position, may writting a own motion model helps.
2007/11/6, Sashidhar Guntury <[EMAIL PROTECTED]>:
>
> Hi!
> I want to manually place the camera at a point. For that I
> have written the following two functions. The second function returns
> a view which is added to the viewer. But the problem is that whatever
> values I fill in the osg::Matrix::translate(osg::Vec3(...)), nothing
> seems to be happening. The view remains the same...
>
> osg::MatrixTransform* setPosition(osg::Node* scene, osg::BoundingSphere*
> bs){
> osg::MatrixTransform* mTop = new osg::MatrixTransform;
> mTop->setName("Top View");
> mTop->setMatrix(osg::Matrix::rotate(osg::inDegrees(90.0
> ),osg::Vec3(1.0,0.0,0.0))
> * osg::Matrix::translate(osg::Vec3(100.0, 600.0, 0.0))); /*All
> changes done here*/
>
> mTop->setMatrix(n);
> mTop->addChild(scene);
> return mTop;
> }
>
> osgViewer::View* createTopView(osg::Node* scene){
> osgViewer::View* topView = new osgViewer::View;
> osg::BoundingSphere bsh = scene->getBound();
> cout << bsh.radius() << endl;
>
> topView->getCamera()->setProjectionMatrixAsPerspective(60.0f,
> (double)traits->width/(double)traits->height, 1.0, 1000.0);
> topView->getCamera()->setViewport(new osg::Viewport(0, 0,
> (traits->width)/5, (traits->height)/5));
> topView->getCamera()->setGraphicsContext(gc.get());
> topView->getCamera()->setClearColor(osg::Vec4(0.4f, 0.4f, 0.4f,
> 1.0f));
>
>
> topView->getCamera()->setClearMask(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
>
> topView->setSceneData(setPosition(scene, &bsh));
> return topView;
> }
>
> why does it happen so? In the
> NPS Tutorials, in the 10th tutorial, there was some code which helped
> manually place a camera. In that tutorial, the guy has taken the
> inverse of the view matrix. Why? Am I missing something?? :(
> _______________________________________________
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
--
********************************************
Adrian Egli
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