FGFS-4.1/OpenSceneGraph
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Added support for osgUtil::Intersectors being in WINDOW, PROJECTION, VIEW or MODEL coordinates

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This commit is contained in:
Robert Osfield
2006-11-01 14:41:32 +00:00
parent a253e17d3e
commit 75169ad16f
3 changed files with 170 additions and 20 deletions
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60
examples/osgkeyboardmouse/osgkeyboardmouse.cpp
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@@ -13,6 +13,7 @@
#include <osgUtil/SceneView>
#include <osgUtil/IntersectVisitor>
#include <osgUtil/IntersectionVisitor>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
@@ -187,7 +188,62 @@ public:
float mx = _sceneView->getViewport()->x() + (int)((float)_sceneView->getViewport()->width()*(ea.getXnormalized()*0.5f+0.5f));
float my = _sceneView->getViewport()->y() + (int)((float)_sceneView->getViewport()->height()*(ea.getYnormalized()*0.5f+0.5f));
#if 1
osgUtil::LineSegmentIntersector* picker = new osgUtil::LineSegmentIntersector(osg::Vec3d(mx,my,0.0), osg::Vec3d(mx,my,1.0) );
picker->setCoordinateFrame(osgUtil::Intersector::WINDOW);
osgUtil::IntersectionVisitor iv(picker);
_sceneView->getCamera()->accept(iv);
osg::notify(osg::NOTICE)<<"Done pick, "<<picker->containsIntersections()<<std::endl;
if (picker->containsIntersections())
{
osgUtil::LineSegmentIntersector::Intersection intersection = picker->getFirstIntersection();
osg::notify(osg::NOTICE)<<"Picking "<<intersection.localIntersectionPoint<<std::endl;
osg::NodePath& nodePath = intersection.nodePath;
osg::Node* node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;
osg::Group* parent = (nodePath.size()>=2)?dynamic_cast<osg::Group*>(nodePath[nodePath.size()-2]):0;
if (node) std::cout<<" Hits "<<node->className()<<" nodePath size"<<nodePath.size()<<std::endl;
// now we try to decorate the hit node by the osgFX::Scribe to show that its been "picked"
if (parent && node)
{
std::cout<<" parent "<<parent->className()<<std::endl;
osgFX::Scribe* parentAsScribe = dynamic_cast<osgFX::Scribe*>(parent);
if (!parentAsScribe)
{
// node not already picked, so highlight it with an osgFX::Scribe
osgFX::Scribe* scribe = new osgFX::Scribe();
scribe->addChild(node);
parent->replaceChild(node,scribe);
}
else
{
// node already picked so we want to remove scribe to unpick it.
osg::Node::ParentList parentList = parentAsScribe->getParents();
for(osg::Node::ParentList::iterator itr=parentList.begin();
itr!=parentList.end();
++itr)
{
(*itr)->replaceChild(parentAsScribe,node);
}
}
}
}
#else
// do the pick traversal.
osgUtil::PickVisitor pick(_sceneView->getViewport(),
_sceneView->getProjectionMatrix(),
@@ -239,6 +295,8 @@ public:
}
}
#endif
}
void saveSelectedModel()