700 lines
23 KiB
C++
700 lines
23 KiB
C++
/* OpenSceneGraph example, osganimate.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <osg/Notify>
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#include <osg/io_utils>
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#include <osg/TextureRectangle>
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#include <osg/TexMat>
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#include <osgDB/ReadFile>
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#include <osgGA/StateSetManipulator>
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#include <osgGA/TrackballManipulator>
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#include <osgViewer/Viewer>
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#include <osgViewer/ViewerEventHandlers>
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class Keystone : public osg::Referenced
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{
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public:
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Keystone():
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bottom_left(-1.0,-1.0),
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bottom_right(1.0,-1.0),
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top_left(-1.0,1.0),
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top_right(1.0,1.0) {}
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void reset()
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{
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bottom_left.set(-1.0,-1.0);
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bottom_right.set(1.0,-1.0);
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top_left.set(-1.0,1.0);
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top_right.set(1.0,1.0);
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}
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Keystone& operator = (const Keystone& rhs)
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{
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if (&rhs==this) return *this;
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bottom_left = rhs.bottom_left;
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bottom_right = rhs.bottom_right;
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top_left = rhs.top_left;
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top_right = rhs.top_right;
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return *this;
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}
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osg::Vec2d bottom_left;
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osg::Vec2d bottom_right;
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osg::Vec2d top_left;
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osg::Vec2d top_right;
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void compute3DPositions(osg::DisplaySettings* ds, osg::Vec3& tl, osg::Vec3& tr, osg::Vec3& br, osg::Vec3& bl) const
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{
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double tr_x = ((top_right-bottom_right).length()) / ((top_left-bottom_left).length());
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double r_left = sqrt(tr_x);
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double r_right = r_left/tr_x;
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double tr_y = ((top_right-top_left).length()) / ((bottom_right-bottom_left).length());
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double r_bottom = sqrt(tr_y);
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double r_top = r_bottom/tr_y;
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double screenDistance = ds->getScreenDistance();
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double screenWidth = ds->getScreenWidth();
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double screenHeight = ds->getScreenHeight();
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tl = osg::Vec3(screenWidth*0.5*top_left.x(), screenHeight*0.5*top_left.y(), -screenDistance)*r_left*r_top;
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tr = osg::Vec3(screenWidth*0.5*top_right.x(), screenHeight*0.5*top_right.y(), -screenDistance)*r_right*r_top;
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br = osg::Vec3(screenWidth*0.5*bottom_right.x(), screenHeight*0.5*bottom_right.y(), -screenDistance)*r_right*r_bottom;
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bl = osg::Vec3(screenWidth*0.5*bottom_left.x(), screenHeight*0.5*bottom_left.y(), -screenDistance)*r_left*r_bottom;
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}
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};
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class KeystoneHandler : public osgGA::GUIEventHandler
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{
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public:
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KeystoneHandler(Keystone* keystone);
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~KeystoneHandler() {}
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bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa);
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enum Region
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{
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NONE_SELECTED,
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TOP_LEFT,
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TOP,
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TOP_RIGHT,
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RIGHT,
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BOTTOM_RIGHT,
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BOTTOM,
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BOTTOM_LEFT,
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LEFT,
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CENTER
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};
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osg::Vec2d incrementScale(const osgGA::GUIEventAdapter& ea) const;
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Region computeRegion(const osgGA::GUIEventAdapter& ea) const;
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void move(Region region, const osg::Vec2d& delta);
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protected:
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osg::ref_ptr<Keystone> _keystone;
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osg::Vec2d _defaultIncrement;
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osg::Vec2d _ctrlIncrement;
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osg::Vec2d _shiftIncrement;
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osg::Vec2d _keyIncrement;
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osg::Vec2d _startPosition;
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osg::ref_ptr<Keystone> _startControlPoints;
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Region _selectedRegion;
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osg::ref_ptr<Keystone> _currentControlPoints;
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};
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KeystoneHandler::KeystoneHandler(Keystone* keystone):
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_keystone(keystone),
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_defaultIncrement(0.0,0.0),
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_ctrlIncrement(1.0,1.0),
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_shiftIncrement(0.1,0.1),
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_keyIncrement(0.005, 0.005),
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_selectedRegion(NONE_SELECTED)
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{
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_startControlPoints = new Keystone;
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_currentControlPoints = keystone; //new Keystone;
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}
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KeystoneHandler::Region KeystoneHandler::computeRegion(const osgGA::GUIEventAdapter& ea) const
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{
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float x = ea.getXnormalized();
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float y = ea.getYnormalized();
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if (x<-0.33)
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{
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// left side
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if (y<-0.33) return BOTTOM_LEFT;
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else if (y<0.33) return LEFT;
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else return TOP_LEFT;
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}
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else if (x<0.33)
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{
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// center side
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if (y<-0.33) return BOTTOM;
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else if (y<0.33) return CENTER;
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else return TOP;
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}
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else
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{
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// right side
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if (y<-0.33) return BOTTOM_RIGHT;
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else if (y<0.33) return RIGHT;
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else return TOP_RIGHT;
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}
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return NONE_SELECTED;
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}
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void KeystoneHandler::move(Region region, const osg::Vec2d& delta)
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{
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switch(region)
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{
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case(TOP_LEFT):
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_currentControlPoints->top_left += delta;
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break;
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case(TOP):
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_currentControlPoints->top_left += delta;
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_currentControlPoints->top_right += delta;
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break;
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case(TOP_RIGHT):
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_currentControlPoints->top_right += delta;
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break;
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case(RIGHT):
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_currentControlPoints->top_right += delta;
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_currentControlPoints->bottom_right += delta;
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break;
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case(BOTTOM_RIGHT):
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_currentControlPoints->bottom_right += delta;
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break;
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case(BOTTOM):
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_currentControlPoints->bottom_right += delta;
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_currentControlPoints->bottom_left += delta;
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break;
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case(BOTTOM_LEFT):
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_currentControlPoints->bottom_left += delta;
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break;
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case(LEFT):
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_currentControlPoints->bottom_left += delta;
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_currentControlPoints->top_left += delta;
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break;
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case(CENTER):
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_currentControlPoints->bottom_left += delta;
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_currentControlPoints->top_left += delta;
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_currentControlPoints->bottom_right += delta;
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_currentControlPoints->top_right += delta;
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break;
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case(NONE_SELECTED):
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break;
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}
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}
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osg::Vec2d KeystoneHandler::incrementScale(const osgGA::GUIEventAdapter& ea) const
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{
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if (_ctrlIncrement!=osg::Vec2d(0.0,0.0) && (ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_LEFT_CTRL || ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_RIGHT_CTRL )) return _ctrlIncrement;
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if (_shiftIncrement!=osg::Vec2d(0.0,0.0) && (ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_LEFT_SHIFT || ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_RIGHT_SHIFT )) return _shiftIncrement;
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return _defaultIncrement;
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}
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bool KeystoneHandler::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa)
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{
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switch(ea.getEventType())
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{
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case(osgGA::GUIEventAdapter::PUSH):
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{
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osg::Vec2d scale = incrementScale(ea);
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if (scale.length2()!=0.0)
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{
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_selectedRegion = computeRegion(ea);
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(*_startControlPoints) = (*_currentControlPoints);
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_startPosition.set(ea.getXnormalized(),ea.getYnormalized());
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}
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else
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{
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_selectedRegion = NONE_SELECTED;
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}
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return false;
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}
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case(osgGA::GUIEventAdapter::DRAG):
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{
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if (_selectedRegion!=NONE_SELECTED)
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{
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(*_currentControlPoints) = (*_startControlPoints);
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osg::Vec2d currentPosition(ea.getXnormalized(), ea.getYnormalized());
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osg::Vec2d delta(currentPosition-_startPosition);
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osg::Vec2d scale = incrementScale(ea);
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move(_selectedRegion, osg::Vec2d(delta.x()*scale.x(), delta.y()*scale.y()) );
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return true;
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}
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return false;
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}
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case(osgGA::GUIEventAdapter::RELEASE):
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{
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_selectedRegion = NONE_SELECTED;
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return false;
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}
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case(osgGA::GUIEventAdapter::KEYDOWN):
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{
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if (ea.getKey()=='r')
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{
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_selectedRegion = NONE_SELECTED;
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_startControlPoints->reset();
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_currentControlPoints->reset();
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}
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else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Up)
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{
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move(computeRegion(ea), osg::Vec2d(0.0, _keyIncrement.y()*incrementScale(ea).y()) );
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}
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else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Down)
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{
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move(computeRegion(ea), osg::Vec2d(0.0, -_keyIncrement.y()*incrementScale(ea).y()) );
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}
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else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Left)
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{
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move(computeRegion(ea), osg::Vec2d(-_keyIncrement.x()*incrementScale(ea).x(), 0.0) );
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}
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else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Right)
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{
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move(computeRegion(ea), osg::Vec2d(_keyIncrement.x()*incrementScale(ea).x(), 0.0) );
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}
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else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_7 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Home)
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{
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_currentControlPoints->top_left.set(ea.getXnormalized(), ea.getYnormalized());
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}
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else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_9 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Page_Up)
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{
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_currentControlPoints->top_right.set(ea.getXnormalized(), ea.getYnormalized());
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}
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else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_3 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Page_Down)
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{
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_currentControlPoints->bottom_right.set(ea.getXnormalized(), ea.getYnormalized());
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}
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else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_1 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_End)
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{
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_currentControlPoints->bottom_left.set(ea.getXnormalized(), ea.getYnormalized());
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}
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else
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{
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OSG_NOTICE<<"key = 0x"<<std::hex<<ea.getKey()<<std::dec<<std::endl;
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}
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return false;
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}
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default:
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return false;
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}
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}
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struct KeystoneUpdateCallback : public osg::Drawable::UpdateCallback
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{
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KeystoneUpdateCallback(Keystone* keystone=0):_keystone(keystone) {}
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KeystoneUpdateCallback(const KeystoneUpdateCallback&, const osg::CopyOp&) {}
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META_Object(osg,KeystoneUpdateCallback);
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/** do customized update code.*/
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virtual void update(osg::NodeVisitor*, osg::Drawable* drawable)
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{
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update(dynamic_cast<osg::Geometry*>(drawable));
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}
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void update(osg::Geometry* geometry)
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{
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if (!geometry) return;
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osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(geometry->getVertexArray());
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if (!vertices) return;
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osg::Vec2Array* texcoords = dynamic_cast<osg::Vec2Array*>(geometry->getTexCoordArray(0));
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if (!texcoords) return;
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osg::Vec3 tl, tr, br, bl;
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_keystone->compute3DPositions(osg::DisplaySettings::instance().get(), tl, tr, br, bl);
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for(unsigned int i=0; i<vertices->size(); ++i)
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{
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osg::Vec3& v = (*vertices)[i];
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osg::Vec2& t = (*texcoords)[i];
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v = bl * ((1.0f-t.x())*(1.0f-t.y())) +
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br * ((t.x())*(1.0f-t.y())) +
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tl * ((1.0f-t.x())*(t.y())) +
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tr * ((t.x())*(t.y()));
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}
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geometry->dirtyBound();
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}
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osg::ref_ptr<Keystone> _keystone;
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};
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osg::Geode* createKeystoneDistortionMesh(Keystone* keystone)
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{
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osg::ref_ptr<osg::Geode> geode = new osg::Geode;
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osg::ref_ptr<osg::Geometry> geometry = new osg::Geometry;
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geode->addDrawable(geometry.get());
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geometry->setUseDisplayList(false);
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osg::ref_ptr<KeystoneUpdateCallback> kuc = new KeystoneUpdateCallback(keystone);
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geometry->setUpdateCallback(kuc.get());
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osg::ref_ptr<osg::Vec4Array> colours = new osg::Vec4Array;
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colours->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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geometry->setColorArray(colours.get());
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geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
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osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
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geometry->setVertexArray(vertices.get());
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osg::ref_ptr<osg::Vec2Array> texcoords = new osg::Vec2Array;
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geometry->setTexCoordArray(0, texcoords.get());
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unsigned int numRows = 7;
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unsigned int numColumns = 7;
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unsigned int numVertices = numRows*numColumns;
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vertices->resize(numVertices);
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texcoords->resize(numVertices);
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for(unsigned j=0; j<numRows; j++)
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{
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for(unsigned i=0; i<numColumns; i++)
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{
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osg::Vec2& t = (*texcoords)[j*numColumns+i];
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t.set(static_cast<float>(i)/static_cast<float>(numColumns-1), static_cast<float>(j)/static_cast<float>(numRows-1));
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}
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}
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osg::ref_ptr<osg::DrawElementsUShort> elements = new osg::DrawElementsUShort(GL_TRIANGLES);
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geometry->addPrimitiveSet(elements.get());
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for(unsigned j=0; j<numRows-1; j++)
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{
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for(unsigned i=0; i<numColumns-1; i++)
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{
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unsigned int vi = j*numColumns+i;
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elements->push_back(vi+numColumns);
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elements->push_back(vi);
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elements->push_back(vi+1);
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elements->push_back(vi+numColumns);
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elements->push_back(vi+1);
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elements->push_back(vi+1+numColumns);
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}
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}
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geometry->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
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geometry->getOrCreateStateSet()->setRenderBinDetails(0, "RenderBin");
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kuc->update(geometry.get());
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return geode.release();
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}
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osg::Node* createGrid(Keystone* keystone, const osg::Vec4& colour)
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{
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osg::ref_ptr<osg::Geode> geode = new osg::Geode;
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osg::ref_ptr<osg::Geometry> geometry = new osg::Geometry;
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geode->addDrawable(geometry.get());
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geometry->setUseDisplayList(false);
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osg::ref_ptr<KeystoneUpdateCallback> kuc = new KeystoneUpdateCallback(keystone);
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geometry->setUpdateCallback(kuc.get());
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osg::ref_ptr<osg::Vec4Array> colours = new osg::Vec4Array;
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colours->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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geometry->setColorArray(colours.get());
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geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
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osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
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geometry->setVertexArray(vertices.get());
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osg::ref_ptr<osg::Vec2Array> texcoords = new osg::Vec2Array;
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geometry->setTexCoordArray(0, texcoords.get());
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osg::Vec2 origin(0.0f, 0.0f);
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osg::Vec2 widthVector(1.0f, 0.0f);
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osg::Vec2 heightVector(0.0f, 1.0f);
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unsigned int numIntervals = 7;
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// border line
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{
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unsigned int vi = texcoords->size();
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texcoords->push_back(origin);
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texcoords->push_back(origin+widthVector);
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texcoords->push_back(origin+widthVector+heightVector);
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texcoords->push_back(origin+heightVector);
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geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_LOOP, vi, 4));
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}
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// cross lines
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{
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unsigned int vi = texcoords->size();
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osg::Vec2 v = origin;
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osg::Vec2 dv = (widthVector+heightVector)/static_cast<float>(numIntervals-1);
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for(unsigned int i=0; i<numIntervals; ++i)
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{
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texcoords->push_back(v);
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v += dv;
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}
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geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP, vi, numIntervals));
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vi = texcoords->size();
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v = origin+heightVector;
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dv = (widthVector-heightVector)/static_cast<float>(numIntervals-1);
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for(unsigned int i=0; i<numIntervals; ++i)
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{
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texcoords->push_back(v);
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v += dv;
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}
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geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP, vi, numIntervals));
|
|
}
|
|
|
|
// vertices lines
|
|
{
|
|
unsigned int vi = texcoords->size();
|
|
osg::Vec2 dv = widthVector/6.0;
|
|
osg::Vec2 bv = origin+dv;
|
|
osg::Vec2 tv = bv+heightVector;
|
|
for(unsigned int i=0; i<5; ++i)
|
|
{
|
|
texcoords->push_back(bv);
|
|
texcoords->push_back(tv);
|
|
bv += dv;
|
|
tv += dv;
|
|
}
|
|
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINES, vi, 10));
|
|
}
|
|
|
|
// horizontal lines
|
|
{
|
|
unsigned int vi = texcoords->size();
|
|
osg::Vec2 dv = heightVector/6.0;
|
|
osg::Vec2 bv = origin+dv;
|
|
osg::Vec2 tv = bv+widthVector;
|
|
for(unsigned int i=0; i<5; ++i)
|
|
{
|
|
texcoords->push_back(bv);
|
|
texcoords->push_back(tv);
|
|
bv += dv;
|
|
tv += dv;
|
|
}
|
|
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINES, vi, 10));
|
|
}
|
|
|
|
vertices->resize(texcoords->size());
|
|
|
|
geometry->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
|
|
geometry->getOrCreateStateSet()->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
|
|
geometry->getOrCreateStateSet()->setRenderBinDetails(1, "RenderBin");
|
|
|
|
kuc->update(geometry.get());
|
|
|
|
return geode.release();
|
|
}
|
|
|
|
|
|
void setUpViewForKeystone(osgViewer::View* view, Keystone* keystone)
|
|
{
|
|
int screenNum = 0;
|
|
|
|
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
|
|
if (!wsi)
|
|
{
|
|
OSG_NOTICE<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
|
|
return;
|
|
}
|
|
|
|
osg::GraphicsContext::ScreenIdentifier si;
|
|
si.readDISPLAY();
|
|
|
|
// displayNum has not been set so reset it to 0.
|
|
if (si.displayNum<0) si.displayNum = 0;
|
|
|
|
si.screenNum = screenNum;
|
|
|
|
unsigned int width, height;
|
|
wsi->getScreenResolution(si, width, height);
|
|
|
|
// width/=2; height/=2;
|
|
|
|
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
|
|
traits->hostName = si.hostName;
|
|
traits->displayNum = si.displayNum;
|
|
traits->screenNum = si.screenNum;
|
|
traits->x = 0;
|
|
traits->y = 0;
|
|
traits->width = width;
|
|
traits->height = height;
|
|
traits->windowDecoration = false;
|
|
traits->doubleBuffer = true;
|
|
traits->sharedContext = 0;
|
|
|
|
|
|
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
|
|
if (!gc)
|
|
{
|
|
OSG_NOTICE<<"GraphicsWindow has not been created successfully."<<std::endl;
|
|
return;
|
|
}
|
|
|
|
int tex_width = width;
|
|
int tex_height = height;
|
|
|
|
int camera_width = tex_width;
|
|
int camera_height = tex_height;
|
|
|
|
osg::TextureRectangle* texture = new osg::TextureRectangle;
|
|
|
|
texture->setTextureSize(tex_width, tex_height);
|
|
texture->setInternalFormat(GL_RGB);
|
|
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
|
|
texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR);
|
|
texture->setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_EDGE);
|
|
texture->setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP_TO_EDGE);
|
|
|
|
#if 0
|
|
osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::SEPERATE_WINDOW;
|
|
GLenum buffer = GL_FRONT;
|
|
#else
|
|
osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::FRAME_BUFFER_OBJECT;
|
|
GLenum buffer = GL_FRONT;
|
|
#endif
|
|
|
|
// front face
|
|
{
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setName("Render to texture camera");
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setAllowEventFocus(false);
|
|
// tell the camera to use OpenGL frame buffer object where supported.
|
|
camera->setRenderTargetImplementation(renderTargetImplementation);
|
|
|
|
// attach the texture and use it as the color buffer.
|
|
camera->attach(osg::Camera::COLOR_BUFFER, texture);
|
|
|
|
view->addSlave(camera.get(), osg::Matrixd(), osg::Matrixd());
|
|
}
|
|
|
|
// distortion correction set up.
|
|
{
|
|
|
|
double screenDistance = osg::DisplaySettings::instance()->getScreenDistance();
|
|
double screenWidth = osg::DisplaySettings::instance()->getScreenWidth();
|
|
double screenHeight = osg::DisplaySettings::instance()->getScreenHeight();
|
|
double fovy = osg::RadiansToDegrees(2.0*atan2(screenHeight/2.0,screenDistance));
|
|
double aspectRatio = screenWidth/screenHeight;
|
|
|
|
osg::Geode* geode = createKeystoneDistortionMesh(keystone);
|
|
|
|
// new we need to add the texture to the mesh, we do so by creating a
|
|
// StateSet to contain the Texture StateAttribute.
|
|
osg::StateSet* stateset = geode->getOrCreateStateSet();
|
|
stateset->setTextureAttributeAndModes(0, texture,osg::StateAttribute::ON);
|
|
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
|
|
|
|
osg::TexMat* texmat = new osg::TexMat;
|
|
texmat->setScaleByTextureRectangleSize(true);
|
|
stateset->setTextureAttributeAndModes(0, texmat, osg::StateAttribute::ON);
|
|
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
|
|
camera->setClearColor( osg::Vec4(0.0,0.0,0.0,1.0) );
|
|
camera->setViewport(new osg::Viewport(0, 0, width, height));
|
|
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setReferenceFrame(osg::Camera::ABSOLUTE_RF);
|
|
camera->setAllowEventFocus(false);
|
|
camera->setInheritanceMask(camera->getInheritanceMask() & ~osg::CullSettings::CLEAR_COLOR & ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE);
|
|
//camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
|
|
|
|
camera->setViewMatrix(osg::Matrix::identity());
|
|
camera->setProjectionMatrixAsPerspective(fovy, aspectRatio, 0.1, 1000.0);
|
|
|
|
// add subgraph to render
|
|
camera->addChild(geode);
|
|
|
|
camera->addChild(createGrid(keystone, osg::Vec4(1.0,1.0,1.0,1.0)));
|
|
|
|
camera->setName("DistortionCorrectionCamera");
|
|
|
|
camera->addEventCallback(new KeystoneHandler(keystone));
|
|
|
|
view->addSlave(camera.get(), osg::Matrixd(), osg::Matrixd(), false);
|
|
}
|
|
}
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
osg::ArgumentParser arguments(&argc,argv);
|
|
|
|
// initialize the viewer.
|
|
osgViewer::Viewer viewer(arguments);
|
|
|
|
osg::ref_ptr<osg::Node> model = osgDB::readNodeFiles(arguments);
|
|
|
|
if (!model)
|
|
{
|
|
OSG_NOTICE<<"No models loaded, please specify a model file on the command line"<<std::endl;
|
|
return 1;
|
|
}
|
|
|
|
viewer.setSceneData(model.get());
|
|
|
|
// add the state manipulator
|
|
viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
|
|
|
|
// add the stats handler
|
|
viewer.addEventHandler(new osgViewer::StatsHandler);
|
|
|
|
// add camera manipulator
|
|
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
|
|
|
|
setUpViewForKeystone(&viewer, new Keystone);
|
|
|
|
viewer.realize();
|
|
|
|
while(!viewer.done())
|
|
{
|
|
viewer.advance();
|
|
viewer.eventTraversal();
|
|
viewer.updateTraversal();
|
|
viewer.renderingTraversals();
|
|
}
|
|
return 0;
|
|
}
|