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Added PickHandler to osgmultiplecameras examples

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This commit is contained in:
Robert Osfield
2007-01-16 17:10:15 +00:00
parent dad3deec38
commit b71f613b77
4 changed files with 181 additions and 91 deletions
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2
examples/osgmultiplecameras/GNUmakefile
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@@ -4,7 +4,7 @@ include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgmultiplecameras.cpp\
LIBS += -losgViewer -losgText -losgGA -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
LIBS += -losgViewer -losgFX -losgText -losgGA -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
INSTFILES = \
$(CXXFILES)\

2
examples/osgmultiplecameras/GNUmakefile.inst
View File

@@ -4,7 +4,7 @@ include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgmultiplecameras.cpp\
LIBS += -losgViewer -losgText-losgDB -losgText -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
LIBS += -losgViewer -losgFX -losgText -losgDB -losgText -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
EXEC = osgmultiplecameras

265
examples/osgmultiplecameras/osgmultiplecameras.cpp
View File

@@ -32,6 +32,92 @@
#include <osgViewer/CompositeViewer>
#include <osgFX/Scribe>
#include <osg/io_utils>
// class to handle events with a pick
class PickHandler : public osgGA::GUIEventHandler {
public:
PickHandler():
_mx(0.0f),
_my(0.0f) {}
~PickHandler() {}
bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa)
{
osgViewer::View* view = dynamic_cast<osgViewer::View*>(&aa);
if (!view) return false;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::PUSH):
{
_mx = ea.getX();
_my = ea.getY();
break;
}
case(osgGA::GUIEventAdapter::RELEASE):
{
if (_mx==ea.getX() && _my==ea.getY())
{
pick(view, ea.getX(), ea.getY());
}
break;
}
default:
break;
}
return false;
}
void pick(osgViewer::View* view, float x, float y)
{
osg::Node* node = 0;
osg::Group* parent = 0;
osgUtil::LineSegmentIntersector::Intersections intersections;
if (view->computeIntersections(x, y, intersections))
{
osgUtil::LineSegmentIntersector::Intersection intersection = *intersections.begin();
osg::NodePath& nodePath = intersection.nodePath;
node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;
parent = (nodePath.size()>=2)?dynamic_cast<osg::Group*>(nodePath[nodePath.size()-2]):0;
}
// now we try to decorate the hit node by the osgFX::Scribe to show that its been "picked"
if (parent && node)
{
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);
}
}
}
}
float _mx, _my;
};
int main( int argc, char **argv )
{
@@ -47,105 +133,20 @@ int main( int argc, char **argv )
// construct the viewer.
osgViewer::CompositeViewer viewer;
if (arguments.read("-1"))
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return 1;
}
unsigned int width, height;
wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
if (gc.valid())
{
osg::notify(osg::INFO)<<" GraphicsWindow has been created successfully."<<std::endl;
// need to ensure that the window is cleared make sure that the complete window is set the correct colour
// rather than just the parts of the window that are under the camera's viewports
gc->setClearColor(osg::Vec4f(0.2f,0.2f,0.6f,1.0f));
gc->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
else
{
osg::notify(osg::NOTICE)<<" GraphicsWindow has not been created successfully."<<std::endl;
}
// view one
{
osgViewer::View* view = new osgViewer::View;
view->setSceneData(scene.get());
view->getCamera()->setViewport(new osg::Viewport(0,0, width/2, height/2));
view->getCamera()->setGraphicsContext(gc.get());
view->setCameraManipulator(new osgGA::TrackballManipulator);
viewer.addView(view);
// add the state manipulator
osg::ref_ptr<osgGA::StateSetManipulator> statesetManipulator = new osgGA::StateSetManipulator;
statesetManipulator->setStateSet(view->getCamera()->getOrCreateStateSet());
view->addEventHandler( statesetManipulator.get() );
}
// view two
{
osgViewer::View* view = new osgViewer::View;
view->setSceneData(scene.get());
view->getCamera()->setViewport(new osg::Viewport(width/2,0, width/2, height/2));
view->getCamera()->setGraphicsContext(gc.get());
view->setCameraManipulator(new osgGA::TrackballManipulator);
viewer.addView(view);
}
// view three
if (false)
{
osgViewer::View* view = new osgViewer::View;
view->setSceneData(osgDB::readNodeFile("town.ive"));
view->setUpViewAcrossAllScreens();
viewer.addView(view);
}
else
{
osgViewer::View* view = new osgViewer::View;
view->setSceneData(osgDB::readNodeFile("town.ive"));
view->getCamera()->setProjectionMatrixAsPerspective(30.0, double(width) / double(height/2), 1.0, 1000.0);
view->getCamera()->setViewport(new osg::Viewport(0, height/2, width, height/2));
view->getCamera()->setGraphicsContext(gc.get());
view->setCameraManipulator(new osgGA::FlightManipulator);
viewer.addView(view);
}
}
if (arguments.read("-2"))
{
{
osgViewer::View* view = new osgViewer::View;
view->setSceneData(osgDB::readNodeFile("town.ive"));
view->setSceneData(osgDB::readNodeFile("fountain.osg"));
view->setUpViewAcrossAllScreens();
view->setCameraManipulator(new osgGA::FlightManipulator);
view->setCameraManipulator(new osgGA::TrackballManipulator);
viewer.addView(view);
}
}
if (arguments.read("-3") || viewer.getNumViews()==0)
if (arguments.read("-2"))
{
// view one
@@ -172,9 +173,95 @@ int main( int argc, char **argv )
view->setUpViewOnSingleScreen(1);
view->setSceneData(scene.get());
view->setCameraManipulator(new osgGA::TrackballManipulator);
// add the handler for doing the picking
view->addEventHandler(new PickHandler());
}
}
if (arguments.read("-3") || viewer.getNumViews()==0)
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return 1;
}
unsigned int width, height;
wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 100;
traits->y = 100;
traits->width = 1000;
traits->height = 800;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
if (gc.valid())
{
osg::notify(osg::INFO)<<" GraphicsWindow has been created successfully."<<std::endl;
// need to ensure that the window is cleared make sure that the complete window is set the correct colour
// rather than just the parts of the window that are under the camera's viewports
gc->setClearColor(osg::Vec4f(0.2f,0.2f,0.6f,1.0f));
gc->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
else
{
osg::notify(osg::NOTICE)<<" GraphicsWindow has not been created successfully."<<std::endl;
}
// view one
{
osgViewer::View* view = new osgViewer::View;
viewer.addView(view);
view->setSceneData(scene.get());
view->getCamera()->setViewport(new osg::Viewport(0,0, traits->width/2, traits->height/2));
view->getCamera()->setGraphicsContext(gc.get());
view->setCameraManipulator(new osgGA::TrackballManipulator);
// add the state manipulator
osg::ref_ptr<osgGA::StateSetManipulator> statesetManipulator = new osgGA::StateSetManipulator;
statesetManipulator->setStateSet(view->getCamera()->getOrCreateStateSet());
view->addEventHandler( statesetManipulator.get() );
}
// view two
{
osgViewer::View* view = new osgViewer::View;
viewer.addView(view);
view->setSceneData(scene.get());
view->getCamera()->setViewport(new osg::Viewport(traits->width/2,0, traits->width/2, traits->height/2));
view->getCamera()->setGraphicsContext(gc.get());
view->setCameraManipulator(new osgGA::TrackballManipulator);
// add the handler for doing the picking
view->addEventHandler(new PickHandler());
}
{
osgViewer::View* view = new osgViewer::View;
viewer.addView(view);
view->setSceneData(osgDB::readNodeFile("cessnafire.osg"));
view->getCamera()->setProjectionMatrixAsPerspective(30.0, double(traits->width) / double(traits->height/2), 1.0, 1000.0);
view->getCamera()->setViewport(new osg::Viewport(0, traits->height/2, traits->width, traits->height/2));
view->getCamera()->setGraphicsContext(gc.get());
view->setCameraManipulator(new osgGA::TrackballManipulator);
}
}
while (arguments.read("-s")) { viewer.setThreadingModel(osgViewer::CompositeViewer::SingleThreaded); }
while (arguments.read("-g")) { viewer.setThreadingModel(osgViewer::CompositeViewer::ThreadPerContext); }