FGFS-4.1/OpenSceneGraph
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Added a couple ability of offset the images relative to each other

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horizontally and vertically to allow better comenstation for mismatched
imagery.
This commit is contained in:
Robert Osfield 2003-04-05 19:40:18 +00:00
parent cac6642de5
commit 75b591e70b
1 changed files with 97 additions and 34 deletions
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131
examples/osgstereoimage/osgstereoimage.cpp
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@ -36,7 +36,7 @@ public:
META_Object(osgStereImageApp,SlideEventHandler);
void set(osg::Switch* sw, osg::TexMat* texmat,float timePerSlide, bool autoSteppingActive);
void set(osg::Switch* sw, float offsetX, float offsetY, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float timePerSlide, bool autoSteppingActive);
virtual void accept(osgGA::GUIEventHandlerVisitor& v) { v.visit(*this); }
@ -52,8 +52,11 @@ public:
void scaleImage(float s);
void offsetImage(float ds,float dt);
void rotateImage(float rx,float ry);
void initTexMatrices();
protected:
@ -61,18 +64,24 @@ protected:
SlideEventHandler(const SlideEventHandler&,const osg::CopyOp&) {}
osg::ref_ptr<osg::Switch> _switch;
osg::ref_ptr<osg::TexMat> _texmat;
osg::ref_ptr<osg::TexMat> _texmatLeft;
osg::ref_ptr<osg::TexMat> _texmatRight;
bool _firstTraversal;
unsigned int _activeSlide;
double _previousTime;
double _timePerSlide;
bool _autoSteppingActive;
float _initSeperationX;
float _currentSeperationX;
float _initSeperationY;
float _currentSeperationY;
};
SlideEventHandler::SlideEventHandler():
_switch(0),
_texmat(0),
_texmatLeft(0),
_texmatRight(0),
_firstTraversal(true),
_activeSlide(0),
_previousTime(-1.0f),
@ -81,15 +90,25 @@ SlideEventHandler::SlideEventHandler():
{
}
void SlideEventHandler::set(osg::Switch* sw, osg::TexMat* texmat,float timePerSlide, bool autoSteppingActive)
void SlideEventHandler::set(osg::Switch* sw, float offsetX, float offsetY, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float timePerSlide, bool autoSteppingActive)
{
_switch = sw;
_switch->setUpdateCallback(this);
_texmat = texmat;
_texmatLeft = texmatLeft;
_texmatRight = texmatRight;
_timePerSlide = timePerSlide;
_autoSteppingActive = autoSteppingActive;
_initSeperationX = offsetX;
_currentSeperationX = _initSeperationX;
_initSeperationY = offsetY;
_currentSeperationY = _initSeperationY;
initTexMatrices();
}
bool SlideEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&)
@ -114,19 +133,39 @@ bool SlideEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIAction
previousSlide();
return true;
}
else if (ea.getKey()=='z')
else if (ea.getKey()=='w')
{
scaleImage(0.99f);
return true;
}
else if (ea.getKey()=='x')
else if (ea.getKey()=='s')
{
scaleImage(1.01f);
return true;
}
else if (ea.getKey()=='j')
{
offsetImage(-0.001f,0.0f);
return true;
}
else if (ea.getKey()=='k')
{
offsetImage(0.001f,0.0f);
return true;
}
else if (ea.getKey()=='i')
{
offsetImage(0.0f,-0.001f);
return true;
}
else if (ea.getKey()=='m')
{
offsetImage(0.0f,0.001f);
return true;
}
else if (ea.getKey()==' ')
{
if (_texmat.valid()) _texmat->setMatrix(osg::Matrix::identity());
initTexMatrices();
return true;
}
return false;
@ -134,11 +173,11 @@ bool SlideEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIAction
case(osgGA::GUIEventAdapter::DRAG):
case(osgGA::GUIEventAdapter::MOVE):
{
static int px = ea.getX();
static int py = ea.getY();
static float px = ea.getX();
static float py = ea.getY();
int dx = ea.getX()-px;
int dy = ea.getY()-py;
float dx = ea.getX()-px;
float dy = ea.getY()-py;
px = ea.getX();
py = ea.getY();
@ -159,8 +198,12 @@ void SlideEventHandler::getUsage(osg::ApplicationUsage& usage) const
usage.addKeyboardMouseBinding("a","Toggle on/off the automatic advancement for image to image");
usage.addKeyboardMouseBinding("n","Advance to next image");
usage.addKeyboardMouseBinding("p","Move to previous image");
usage.addKeyboardMouseBinding("z","Zoom into the image");
usage.addKeyboardMouseBinding("x","Zoom out of the image");
usage.addKeyboardMouseBinding("q","Zoom into the image");
usage.addKeyboardMouseBinding("a","Zoom out of the image");
usage.addKeyboardMouseBinding("j","Reduce horizontal offset");
usage.addKeyboardMouseBinding("k","Increase horizontal offset");
usage.addKeyboardMouseBinding("m","Reduce vertical offset");
usage.addKeyboardMouseBinding("i","Increase vertical offset");
}
void SlideEventHandler::operator()(osg::Node* node, osg::NodeVisitor* nv)
@ -208,22 +251,34 @@ void SlideEventHandler::previousSlide()
void SlideEventHandler::scaleImage(float s)
{
if (_texmat.valid())
{
_texmat->setMatrix(_texmat->getMatrix()*osg::Matrix::translate(-0.5f,-0.5f,0.0f)*osg::Matrix::scale(s,s,1.0f)*osg::Matrix::translate(0.5f,0.5f,0.0f));
}
_texmatLeft->setMatrix(_texmatLeft->getMatrix()*osg::Matrix::translate(-0.5f,-0.5f,0.0f)*osg::Matrix::scale(s,s,1.0f)*osg::Matrix::translate(0.5f,0.5f,0.0f));
_texmatRight->setMatrix(_texmatRight->getMatrix()*osg::Matrix::translate(-0.5f,-0.5f,0.0f)*osg::Matrix::scale(s,s,1.0f)*osg::Matrix::translate(0.5f,0.5f,0.0f));
}
void SlideEventHandler::offsetImage(float ds,float dt)
{
_currentSeperationX+=ds;
_currentSeperationY+=dt;
osg::notify(osg::NOTICE)<<"image offset x = "<<_currentSeperationX<<" y ="<<_currentSeperationY<<std::endl;
_texmatLeft->setMatrix(_texmatLeft->getMatrix()*osg::Matrix::translate(ds,dt,0.0f));
_texmatRight->setMatrix(_texmatRight->getMatrix()*osg::Matrix::translate(-ds,-dt,0.0f));
}
void SlideEventHandler::rotateImage(float rx,float ry)
{
if (_texmat.valid())
{
const float scale = 0.5f;
_texmat->setMatrix(_texmat->getMatrix()*osg::Matrix::translate(-rx*scale,ry*scale,0.0f));
}
const float scale = 0.5f;
_texmatLeft->setMatrix(_texmatLeft->getMatrix()*osg::Matrix::translate(-rx*scale,ry*scale,0.0f));
_texmatRight->setMatrix(_texmatRight->getMatrix()*osg::Matrix::translate(-rx*scale,ry*scale,0.0f));
}
osg::Geode* createSectorForImage(osg::Image* image,float s,float t, float radius, float height, float length)
void SlideEventHandler::initTexMatrices()
{
_texmatLeft->setMatrix(osg::Matrix::translate(_initSeperationX,_initSeperationY,0.0f));
_texmatRight->setMatrix(osg::Matrix::translate(-_initSeperationX,-_initSeperationY,0.0f));
}
osg::Geode* createSectorForImage(osg::Image* image, osg::TexMat* texmat, float s,float t, float radius, float height, float length)
{
int numSegments = 20;
@ -243,6 +298,7 @@ osg::Geode* createSectorForImage(osg::Image* image,float s,float t, float radius
dstate->setMode(GL_CULL_FACE,osg::StateAttribute::OFF);
dstate->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
dstate->setTextureAttributeAndModes(0, texture,osg::StateAttribute::ON);
dstate->setTextureAttribute(0, texmat);
// set up the geoset.
osg::Geometry* geom = new osg::Geometry;
@ -289,7 +345,7 @@ osg::Geode* createSectorForImage(osg::Image* image,float s,float t, float radius
// create a switch containing a set of child each containing a
// stereo image pair.
osg::Switch* createScene(const FileList& fileList, float radius, float height, float length)
osg::Switch* createScene(const FileList& fileList, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float radius, float height, float length)
{
osg::Switch* sw = new osg::Switch;
@ -303,10 +359,10 @@ osg::Switch* createScene(const FileList& fileList, float radius, float height, f
float average_s = (imageLeft->s()+imageRight->s())*0.5f;
float average_t = (imageLeft->t()+imageRight->t())*0.5f;
osg::Geode* geodeLeft = createSectorForImage(imageLeft.get(),average_s,average_t, radius, height, length);
osg::Geode* geodeLeft = createSectorForImage(imageLeft.get(),texmatLeft,average_s,average_t, radius, height, length);
geodeLeft->setNodeMask(0x01);
osg::Geode* geodeRight = createSectorForImage(imageRight.get(),average_s,average_t, radius, height, length);
osg::Geode* geodeRight = createSectorForImage(imageRight.get(),texmatRight,average_s,average_t, radius, height, length);
geodeRight->setNodeMask(0x02);
osg::ref_ptr<osg::Group> imageGroup = new osg::Group;
@ -342,6 +398,8 @@ int main( int argc, char **argv )
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getProgramName()+" [options] image_file_left_eye image_file_right_eye");
arguments.getApplicationUsage()->addCommandLineOption("-d <float>","Time delay in sceonds between the display of successive image pairs when in auto advance mode.");
arguments.getApplicationUsage()->addCommandLineOption("-a","Enter auto advance of image pairs on start up.");
arguments.getApplicationUsage()->addCommandLineOption("-x <float>","Horizontal offset of left and right images.");
arguments.getApplicationUsage()->addCommandLineOption("-y <float>","Vertical offset of left and right images.");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
@ -366,6 +424,11 @@ int main( int argc, char **argv )
bool autoSteppingActive = false;
while (arguments.read("-a")) autoSteppingActive = true;
float offsetX=0.0f;
while (arguments.read("-x",offsetX)) {}
float offsetY=0.0f;
while (arguments.read("-y",offsetY)) {}
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
@ -419,13 +482,13 @@ int main( int argc, char **argv )
float height = 2*radius*tan(fovy*0.5f);
float length = osg::PI*radius; // half a cylinder.
// creat the scene from the file list.
osg::ref_ptr<osg::Switch> rootNode = createScene(fileList,radius,height,length);
// use a texure matrix to control the placement of the image.
osg::StateSet* stateset = rootNode->getOrCreateStateSet();
osg::TexMat* texmat = new osg::TexMat;
stateset->setTextureAttribute(0,texmat);
osg::TexMat* texmatLeft = new osg::TexMat;
osg::TexMat* texmatRight = new osg::TexMat;
// creat the scene from the file list.
osg::ref_ptr<osg::Switch> rootNode = createScene(fileList,texmatLeft,texmatRight,radius,height,length);
//osgDB::writeNodeFile(*rootNode,"test.osg");
@ -448,7 +511,7 @@ int main( int argc, char **argv )
// set up the SlideEventHandler.
seh->set(rootNode.get(),texmat,timeDelayBetweenSlides,autoSteppingActive);
seh->set(rootNode.get(),offsetX,offsetY,texmatLeft,texmatRight,timeDelayBetweenSlides,autoSteppingActive);
osg::Matrix homePosition;