OpenSceneGraph 3.0

Time for action—drawing aircrafts on a loaded terrain

In this section, we are going to integrate what we learned before to create a slightly complex example, which identifies all texture objects in a scene graph by using the osg::NodeVisitor utility, replaces them with a newly created shared texture, and binds the new texture to a render-to-textures camera. The texture is expected to represent more than a static image, so a customized simulation loop will be used to animate the sub-scene graph before calling the frame() method.

1. Include the necessary headers:

   #include <osg/Camera>
   #include <osg/Texture2D>
   #include <osgDB/ReadFile>
   #include <osgGA/TrackballManipulator>
   #include <osgViewer/Viewer>
   

2. The first task is to look for any textures applied ...