[osg-users] Toggling between wireframe modes

[Charlie Tan]

Hi,

I just began using OSG for one of my projects. Basically one of the tasks is to enable/disable wireframe mode. I have tried to follow the osgkeyboardmouse example and tried to implement a different version(where you don't have to click on the model, but push a keyboard key) to toggle between the modes.

To do this, I use 2 functions, enterWireFrame() and exitWireFrame() to toggle between the wireframe modes:

void enterWireFrame(const osgGA::GUIEventAdapter& ea, osgViewer::Viewer* viewer)
{
  osg::Node* scene = viewer->getSceneData();

  osg::Group* parent = scene->getParent(0);
  osg::Node* node = parent->getChild(0);

  auto scribe = new osgFX::Scribe();
  scribe->addChild(node);

  parent->replaceChild(node, scribe);
}



void exitWireFrame(const osgGA::GUIEventAdapter& ea, osgViewer::Viewer* viewer)
{
    osg::Node* scene = viewer->getSceneData();

    osg::Group* parent = scene->getParent(0);
    osg::Node* node = (dynamic_cast<osg::Group*>(scene))->getChild(0);

    parent->replaceChild(parent, node);
}


I then ran enterWireFrame() followed by exitWireFrame(). I am able to render the wireframe after the 1st function, but the 2nd function does not do anything at all.

I am totally new to OSG and would very much appreciate if someone could point me in the right direction where my mistake lies (probably in the 2nd function, but I can't figure it out).

Thank you!

Cheers,
Charlie

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http://forum.openscenegraph.org/viewtopic.php?p=75172#75172