OpenSceneGraph 3.0

Time for action—performing translations of child nodes

Now we are going to make use of the transformation node. The osg::MatrixTransform node, which multiplies the current model-view matrix with a specified one directly, will help to transfer our model to different places in the viewing space.

1. Include the necessary headers:

   #include <osg/MatrixTransform>
   #include <osgDB/ReadFile>
   #include <osgViewer/Viewer>
   

2. Load the Cessna model first:

   osg::ref_ptr<osg::Node> model = osgDB::readNodeFile( "cessna.osg" );
   

3. The osg::MatrixTransform class is derived from osg::Group, so it can use the addChild() method to add more children. All child nodes will be affected by the osg::MatrixTransform node and be transformed according to the presetting matrix. Here, we ...