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From Jean-Sebastien Guay and Robert Osfield, added optional --CompositeViewer path into osgpick to illustrate how to do picking in both viewers and as unit test for picking.

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This commit is contained in:
Robert Osfield
2008-03-04 14:19:03 +00:00
parent c4d07194a2
commit d8f674a59d
1 changed files with 37 additions and 15 deletions
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52
examples/osgpick/osgpick.cpp
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@@ -24,6 +24,7 @@
#include <osgUtil/Optimizer>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osgViewer/CompositeViewer>
#include <osg/Material>
#include <osg/Geode>
@@ -49,7 +50,7 @@ public:
bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa);
virtual void pick(osgViewer::Viewer* viewer, const osgGA::GUIEventAdapter& ea);
virtual void pick(osgViewer::View* view, const osgGA::GUIEventAdapter& ea);
void setLabel(const std::string& name)
{
@@ -65,10 +66,10 @@ bool PickHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapte
{
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::FRAME):
case(osgGA::GUIEventAdapter::PUSH):
{
osgViewer::Viewer* viewer = dynamic_cast<osgViewer::Viewer*>(&aa);
if (viewer) pick(viewer,ea);
osgViewer::View* view = dynamic_cast<osgViewer::View*>(&aa);
if (view) pick(view,ea);
return false;
}
default:
@@ -76,12 +77,14 @@ bool PickHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapte
}
}
void PickHandler::pick(osgViewer::Viewer* viewer, const osgGA::GUIEventAdapter& ea)
void PickHandler::pick(osgViewer::View* view, const osgGA::GUIEventAdapter& ea)
{
osgUtil::LineSegmentIntersector::Intersections intersections;
std::string gdlist="";
if (viewer->computeIntersections(ea.getX(),ea.getY(),intersections))
float x = ea.getX();
float y = ea.getY();
if (view->computeIntersections(x,y,intersections))
{
for(osgUtil::LineSegmentIntersector::Intersections::iterator hitr = intersections.begin();
hitr != intersections.end();
@@ -210,13 +213,9 @@ osg::Node* createHUD(osgText::Text* updateText)
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// construct the viewer.
osgViewer::Viewer viewer;
// read the scene from the list of file specified commandline args.
osg::ref_ptr<osg::Node> scene = osgDB::readNodeFiles(arguments);
@@ -235,11 +234,34 @@ int main( int argc, char **argv )
// add the HUD subgraph.
group->addChild(createHUD(updateText.get()));
// add the handler for doing the picking
viewer.addEventHandler(new PickHandler(updateText.get()));
if (arguments.read("--CompositeViewer"))
{
osg::ref_ptr<osgViewer::View> view = new osgViewer::View;
// add the handler for doing the picking
view->addEventHandler(new PickHandler(updateText.get()));
// set the scene to render
viewer.setSceneData(group.get());
// set the scene to render
view->setSceneData(group.get());
view->setUpViewAcrossAllScreens();
osgViewer::CompositeViewer viewer;
viewer.addView(view.get());
return viewer.run();
}
else
{
osgViewer::Viewer viewer;
// add the handler for doing the picking
viewer.addEventHandler(new PickHandler(updateText.get()));
// set the scene to render
viewer.setSceneData(group.get());
return viewer.run();
}
return viewer.run();
}