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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(): PickHandler():
_mx(0.0),_my(0.0), _mx(0.0),_my(0.0),
_usePolytopeIntersector(false), _usePolytopeIntersector(false),
_useWindowCoordinates(false) {} _useWindowCoordinates(false),
_precisionHint(osgUtil::Intersector::USE_DOUBLE_CALCULATIONS) {}
~PickHandler() {} ~PickHandler() {}
@ -218,15 +219,21 @@ public:
double x = viewport->x(); double x = viewport->x();
for(unsigned int c=0; c<numX; ++c) for(unsigned int c=0; c<numX; ++c)
{ {
osg::ref_ptr<osgUtil::Intersector> intersector;
if (_usePolytopeIntersector) 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 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; x += dx;
} }
y += dy; y += dy;
@ -275,6 +282,9 @@ public:
double h = 0.05; double h = 0.05;
picker = new osgUtil::PolytopeIntersector( osgUtil::Intersector::PROJECTION, mx-w, my-h, mx+w, my+h ); picker = new osgUtil::PolytopeIntersector( osgUtil::Intersector::PROJECTION, mx-w, my-h, mx+w, my+h );
} }
picker->setPrecisionHint(_precisionHint);
osgUtil::IntersectionVisitor iv(picker); osgUtil::IntersectionVisitor iv(picker);
osg::ElapsedTime elapsedTime; osg::ElapsedTime elapsedTime;
@ -319,6 +329,8 @@ public:
float my = viewport->y() + (int)((float)viewport->height()*(ea.getYnormalized()*0.5f+0.5f)); float my = viewport->y() + (int)((float)viewport->height()*(ea.getYnormalized()*0.5f+0.5f));
picker = new osgUtil::LineSegmentIntersector( osgUtil::Intersector::WINDOW, mx, my ); picker = new osgUtil::LineSegmentIntersector( osgUtil::Intersector::WINDOW, mx, my );
} }
picker->setPrecisionHint(_precisionHint);
osgUtil::IntersectionVisitor iv(picker); osgUtil::IntersectionVisitor iv(picker);
osg::ElapsedTime elapsedTime; osg::ElapsedTime elapsedTime;
@ -385,11 +397,15 @@ public:
} }
} }
void setPrecisionHint(osgUtil::Intersector::PrecisionHint hint) { _precisionHint = hint; }
protected: protected:
float _mx,_my; float _mx,_my;
bool _usePolytopeIntersector; bool _usePolytopeIntersector;
bool _useWindowCoordinates; bool _useWindowCoordinates;
osgUtil::Intersector::PrecisionHint _precisionHint;
}; };
int main( int argc, char **argv ) int main( int argc, char **argv )
@ -401,6 +417,9 @@ int main( int argc, char **argv )
bool useKdTree = false; bool useKdTree = false;
while (arguments.read("--kdtree")) { useKdTree = true; } 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 // load model
osg::ref_ptr<osg::Node> loadedModel = osgDB::readRefNodeFiles(arguments); osg::ref_ptr<osg::Node> loadedModel = osgDB::readRefNodeFiles(arguments);
@ -431,7 +450,7 @@ int main( int argc, char **argv )
viewer.addEventHandler(statesetManipulator.get()); viewer.addEventHandler(statesetManipulator.get());
// add the pick handler // add the pick handler
viewer.addEventHandler(new PickHandler()); viewer.addEventHandler(pickhandler.get());
viewer.realize(); viewer.realize();