80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the GNU Public License (GPL) version 1.0 or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include "PointsEventHandler.h"
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PointsEventHandler::PointsEventHandler()
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{
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_point = new osg::Point;
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//_point->setDistanceAttenuation(osg::Vec3(0.0,0.0005,0.0f));
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_point->setDistanceAttenuation(osg::Vec3(0.0,0.0000,0.000005f));
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}
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bool PointsEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&)
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{
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switch(ea.getEventType())
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{
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case(osgGA::GUIEventAdapter::KEYDOWN):
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{
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if (ea.getKey()=='+' || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Add)
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{
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changePointSize(1.0f);
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return true;
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}
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else if (ea.getKey()=='-' || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Subtract)
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{
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changePointSize(-1.0f);
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return true;
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}
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break;
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}
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default:
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break;
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}
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return false;
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}
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void PointsEventHandler::accept(osgGA::GUIEventHandlerVisitor& v)
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{
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v.visit(*this);
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}
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void PointsEventHandler::getUsage(osg::ApplicationUsage& usage) const
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{
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usage.addKeyboardMouseBinding("+","Increase point size");
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usage.addKeyboardMouseBinding("-","Reduce point size");
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}
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float PointsEventHandler::getPointSize() const
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{
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return _point->getSize();
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}
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void PointsEventHandler::setPointSize(float psize)
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{
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if (psize>0.0)
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{
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_point->setSize(psize);
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_stateset->setAttribute(_point.get());
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}
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else
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{
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_stateset->setAttribute(_point.get(),osg::StateAttribute::INHERIT);
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}
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std::cout<<"Point size "<<psize<<std::endl;
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}
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void PointsEventHandler::changePointSize(float delta)
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{
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setPointSize(getPointSize()+delta);
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}
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