FGFS-4.1/OpenSceneGraph
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Added KeyHandler for toggling "SIGNED_DISTANCE_FIELD" and "OUTLINE" #pragma(tic) shader defines to control the different shader paths.

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Keys to press are 'd' for toggle SIGNED_DISTANCE_FIELD and 'o' for OUTLINE.
This commit is contained in:
Robert Osfield 2017-09-06 16:53:54 +01:00
parent 20ee12e986
commit 77d4705182
1 changed files with 56 additions and 1 deletions
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57
examples/osgfont/osgfont.cpp
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@ -182,7 +182,61 @@ osgText::Text* createLabel(const std::string& l, TextSettings& settings, unsigne
return label;
}
class KeyHandler : public osgGA::GUIEventHandler
{
public:
KeyHandler() {}
~KeyHandler() {}
bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa)
{
osgViewer::View* view = dynamic_cast<osgViewer::View*>(&aa);
if (!view) return false;
#if 1
osg::StateSet* stateset = view->getSceneData()->getOrCreateStateSet();
#else
osg::StateSet* stateset = view->getCamera()->getOrCreateStateSet();
#endif
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYUP):
{
if (ea.getKey()=='d')
{
toggleDefine(stateset, "SIGNED_DISTANCE_FIELD");
return true;
}
else if (ea.getKey()=='o')
{
toggleDefine(stateset, "OUTLINE");
return true;
}
break;
}
default:
break;
}
return false;
}
void toggleDefine(osg::StateSet* stateset, const std::string& define)
{
osg::StateSet::DefinePair* dp = stateset->getDefinePair(define);
if (dp)
{
OSG_NOTICE<<"Disabling "<<define<<std::endl;
stateset->removeDefine(define);
}
else
{
OSG_NOTICE<<"Enabling "<<define<<std::endl;
stateset->setDefine(define);
}
}
};
int main(int argc, char** argv)
@ -191,9 +245,10 @@ int main(int argc, char** argv)
osgViewer::Viewer viewer(args);
viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
viewer.addEventHandler(new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()));
viewer.addEventHandler(new osgViewer::StatsHandler());
viewer.addEventHandler(new osgViewer::WindowSizeHandler());
viewer.addEventHandler(new KeyHandler());
TextSettings settings;
settings.backgroundColor = viewer.getCamera()->getClearColor();