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Added group intersection test that covers the window with 10000 tests, activated by pressing 'a'. I have added this to provide a reproducable intersection test for benchmarking.

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This commit is contained in:
Robert Osfield 2017-04-21 11:07:17 +01:00
parent 0a651fef7c
commit e09dfb93f1
1 changed files with 46 additions and 0 deletions
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46
examples/osgkeyboardmouse/osgkeyboardmouse.cpp
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@ -165,6 +165,10 @@ public:
osg::notify(osg::NOTICE)<<"Using projection coordiates for picking"<<std::endl;
}
}
else if (ea.getKey()=='a')
{
fullWindowIntersectionTest(viewer);
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Delete || ea.getKey()==osgGA::GUIEventAdapter::KEY_BackSpace)
{
osg::notify(osg::NOTICE)<<"Delete"<<std::endl;
@ -196,6 +200,48 @@ public:
}
}
void fullWindowIntersectionTest(osgViewer::Viewer* viewer)
{
osg::ref_ptr<osgUtil::IntersectorGroup> intersectors = new osgUtil::IntersectorGroup;
osg::Viewport* viewport = viewer->getCamera()->getViewport();
unsigned int numX = 100;
unsigned int numY = 100;
double dx = viewport->width()/double(numX-1);
double dy = viewport->width()/double(numX-1);
double y = viewport->x();
for(unsigned int r=0; r<numY; ++r)
{
double x = viewport->x();
for(unsigned int c=0; c<numX; ++c)
{
if (_usePolytopeIntersector)
{
intersectors->getIntersectors().push_back( new osgUtil::PolytopeIntersector( osgUtil::Intersector::WINDOW, x-dx*0.5, y-dy*0.5, x+dx*0.5, y+dy*0.5 ) );
}
else
{
intersectors->getIntersectors().push_back( new osgUtil::LineSegmentIntersector( osgUtil::Intersector::WINDOW, x, y ) );
}
x += dx;
}
y += dy;
}
osgUtil::IntersectionVisitor iv(intersectors.get());
osg::ElapsedTime elapsedTime;
viewer->getCamera()->accept(iv);
OSG_NOTICE<<"Intersection traversal took "<<elapsedTime.elapsedTime_m()<<"ms for "<<intersectors->getIntersectors().size()<<" intersectors"<<std::endl;
}
void pick(const osgGA::GUIEventAdapter& ea, osgViewer::Viewer* viewer)
{
osg::Node* scene = viewer->getSceneData();