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Seems to fix wireframe crashes

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This commit is contained in:
scrawl 2015-03-17 18:53:56 +01:00
parent 2eedb3acec
commit 31a0bbcb23
1 changed files with 25 additions and 10 deletions
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35
apps/nifosgtest/test.cpp
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@ -17,9 +17,8 @@
class WireframeKeyHandler : public osgGA::GUIEventHandler
{
public:
WireframeKeyHandler(osg::Node* node)
WireframeKeyHandler()
: mWireframe(false)
, mNode(node)
{
}
@ -32,12 +31,7 @@ public:
if (adapter.getKey() == osgGA::GUIEventAdapter::KEY_W)
{
mWireframe = !mWireframe;
osg::PolygonMode* mode = new osg::PolygonMode;
mode->setMode(osg::PolygonMode::FRONT_AND_BACK,
mWireframe ? osg::PolygonMode::LINE : osg::PolygonMode::FILL);
mNode->getOrCreateStateSet()->setAttributeAndModes(mode, osg::StateAttribute::ON);
mNode->getOrCreateStateSet()->setMode(GL_CULL_FACE, mWireframe ? osg::StateAttribute::OFF
: osg::StateAttribute::ON);
// applying state from an event handler doesn't appear to be safe, so do it in the frame update
return true;
}
default:
@ -46,9 +40,13 @@ public:
return false;
}
bool getWireframe() const
{
return mWireframe;
}
private:
bool mWireframe;
osg::Node* mNode;
};
int main(int argc, char** argv)
@ -93,11 +91,28 @@ int main(int argc, char** argv)
viewer.setUpViewInWindow(0, 0, 800, 600);
viewer.realize();
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
viewer.addEventHandler(new WireframeKeyHandler(root));
WireframeKeyHandler* keyHandler = new WireframeKeyHandler;
viewer.addEventHandler(keyHandler);
viewer.addEventHandler(new osgViewer::StatsHandler);
bool wireframe = false;
while (!viewer.done())
{
if (wireframe != keyHandler->getWireframe())
{
wireframe = keyHandler->getWireframe();
osg::PolygonMode* mode = new osg::PolygonMode;
mode->setMode(osg::PolygonMode::FRONT_AND_BACK,
wireframe ? osg::PolygonMode::LINE : osg::PolygonMode::FILL);
root->getOrCreateStateSet()->setAttributeAndModes(mode, osg::StateAttribute::ON);
root->getOrCreateStateSet()->setMode(GL_CULL_FACE, wireframe ? osg::StateAttribute::OFF
: osg::StateAttribute::ON);
}
viewer.frame();
for (unsigned int i=0; i<controllers.size(); ++i)