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Added --double and --float command line options to enable toggling between double and float precision in intersectors

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This commit is contained in:
Robert Osfield 2017-05-09 10:36:28 +01:00
parent 1196e82587
commit 03f73d3aad
1 changed files with 23 additions and 4 deletions
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27
examples/osgkeyboardmouse/osgkeyboardmouse.cpp
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@ -123,7 +123,8 @@ public:
PickHandler():
_mx(0.0),_my(0.0),
_usePolytopeIntersector(false),
_useWindowCoordinates(false) {}
_useWindowCoordinates(false),
_precisionHint(osgUtil::Intersector::USE_DOUBLE_CALCULATIONS) {}
~PickHandler() {}
@ -218,15 +219,21 @@ public:
double x = viewport->x();
for(unsigned int c=0; c<numX; ++c)
{
osg::ref_ptr<osgUtil::Intersector> intersector;
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 ) );
intersector = 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 ) );
intersector = new osgUtil::LineSegmentIntersector( osgUtil::Intersector::WINDOW, x, y);
}
intersector->setPrecisionHint(_precisionHint);
intersectors->getIntersectors().push_back(intersector);
x += dx;
}
y += dy;
@ -275,6 +282,9 @@ public:
double h = 0.05;
picker = new osgUtil::PolytopeIntersector( osgUtil::Intersector::PROJECTION, mx-w, my-h, mx+w, my+h );
}
picker->setPrecisionHint(_precisionHint);
osgUtil::IntersectionVisitor iv(picker);
osg::ElapsedTime elapsedTime;
@ -319,6 +329,8 @@ public:
float my = viewport->y() + (int)((float)viewport->height()*(ea.getYnormalized()*0.5f+0.5f));
picker = new osgUtil::LineSegmentIntersector( osgUtil::Intersector::WINDOW, mx, my );
}
picker->setPrecisionHint(_precisionHint);
osgUtil::IntersectionVisitor iv(picker);
osg::ElapsedTime elapsedTime;
@ -385,11 +397,15 @@ public:
}
}
void setPrecisionHint(osgUtil::Intersector::PrecisionHint hint) { _precisionHint = hint; }
protected:
float _mx,_my;
bool _usePolytopeIntersector;
bool _useWindowCoordinates;
osgUtil::Intersector::PrecisionHint _precisionHint;
};
int main( int argc, char **argv )
@ -401,6 +417,9 @@ int main( int argc, char **argv )
bool useKdTree = false;
while (arguments.read("--kdtree")) { useKdTree = true; }
osg::ref_ptr<PickHandler> pickhandler = new PickHandler;
while (arguments.read("--double")) { pickhandler->setPrecisionHint(osgUtil::Intersector::USE_DOUBLE_CALCULATIONS); }
while (arguments.read("--float")) { pickhandler->setPrecisionHint(osgUtil::Intersector::USE_FLOAT_CALCULATIONS); }
// load model
osg::ref_ptr<osg::Node> loadedModel = osgDB::readRefNodeFiles(arguments);
@ -431,7 +450,7 @@ int main( int argc, char **argv )
viewer.addEventHandler(statesetManipulator.get());
// add the pick handler
viewer.addEventHandler(new PickHandler());
viewer.addEventHandler(pickhandler.get());
viewer.realize();