FGFS-4.1/OpenSceneGraph
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Added support for gather information on which vertices have been intersected with.

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This commit is contained in:
Robert Osfield
2003-04-25 13:47:33 +00:00
parent 84fb15717d
commit 89b1365b2b
3 changed files with 76 additions and 22 deletions
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40
examples/osgpick/osgpick.cpp
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@@ -28,6 +28,7 @@
#include <osgText/Text>
#include <sstream>
// class to handle events with a pick
class PickHandler : public osgGA::GUIEventHandler {
@@ -80,21 +81,26 @@ void PickHandler::pick(const osgGA::GUIEventAdapter& ea)
hitr!=hlist.end();
++hitr)
{
//osg::Vec3 ip = hitr->getLocalIntersectPoint();
//osg::Vec3 in = hitr->getLocalIntersectNormal();
osg::Geode* geode = hitr->_geode.get();
// the geodes are identified by name.
if (geode)
std::ostringstream os;
if (hitr->_geode.valid() && !hitr->_geode->getName().empty())
{
if (!geode->getName().empty())
{
gdlist=gdlist+" "+geode->getName();
}
else
{
gdlist=gdlist+" geode";
}
}
// the geodes are identified by name.
os<<"Object \""<<hitr->_geode->getName()<<"\""<<std::endl;
}
else if (hitr->_drawable.valid())
{
os<<"Object \""<<hitr->_drawable->className()<<"\""<<std::endl;
}
os<<" local coords vertex("<< hitr->getLocalIntersectPoint()<<")"<<" normal("<<hitr->getLocalIntersectNormal()<<")"<<std::endl;
os<<" world coords vertex("<< hitr->getWorldIntersectPoint()<<")"<<" normal("<<hitr->getWorldIntersectNormal()<<")"<<std::endl;
osgUtil::Hit::VecIndexList& vil = hitr->_vecIndexList;
for(unsigned int i=0;i<vil.size();++i)
{
os<<" vertex indices ["<<i<<"] = "<<vil[i]<<std::endl;
}
gdlist += os.str();
}
}
setLabel(gdlist);
@@ -177,12 +183,14 @@ osg::Node* createHUD(osgText::Text* updateText)
osg::StateSet* stateset = geode->getOrCreateStateSet();
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
stateset->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF);
geode->setName("whatis");
geode->setName("The text label");
geode->addDrawable( updateText );
modelview_abs->addChild(geode);
updateText->setCharacterSize(20.0f);
updateText->setFont(timesFont);
updateText->setText("whatis will tell you what is under the mouse");
updateText->setColor(osg::Vec4(1.0f,1.0f,0.0f,1.0f));
updateText->setText("");
updateText->setPosition(position);
position += delta;