FGFS-4.1/OpenSceneGraph
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Added event and update callbacks to pass up changes to the mouse position to the ImageSequence::seek() to control which images is selected based on mouse x position

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This commit is contained in:
Robert Osfield
2012-10-31 16:07:23 +00:00
parent fa2fb07609
commit a6f3e0af78
5 changed files with 124 additions and 16 deletions
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45
src/osgPresentation/SlideEventHandler.cpp
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@@ -57,6 +57,40 @@ void LayerAttributes::callLeaveCallbacks(osg::Node* node)
}
}
void ImageSequenceUpdateCallback::operator()(osg::Node* node, osg::NodeVisitor* nv)
{
float x;
if (_propertyManager->getProperty(_propertyName,x))
{
double xMin = -1.0;
double xMax = 1.0;
double position = ((double)x-xMin)/(xMax-xMin)*_imageSequence->getLength();
_imageSequence->seek(position);
}
else
{
OSG_INFO<<"ImageSequenceUpdateCallback::operator() Could not find property : "<<_propertyName<<std::endl;
}
// note, callback is responsible for scenegraph traversal so
// they must call traverse(node,nv) to ensure that the
// scene graph subtree (and associated callbacks) are traversed.
traverse(node,nv);
}
bool PropertyEventCallback::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&)
{
_propertyManager->setProperty("mouse.x",ea.getX());
_propertyManager->setProperty("mouse.x_normalized",ea.getXnormalized());
_propertyManager->setProperty("mouse.y",ea.getX());
_propertyManager->setProperty("mouse.y_normalized",ea.getYnormalized());
return false;
}
struct InteractiveImageSequenceOperator : public ObjectOperator
{
@@ -90,10 +124,7 @@ struct InteractiveImageSequenceOperator : public ObjectOperator
void set(SlideEventHandler* seh)
{
OSG_NOTICE<<"Mouse x position is : "<<seh->getNormalizedMousePosition().x()<<std::endl;
double position = (static_cast<double>(seh->getNormalizedMousePosition().x())+1.0)*0.5*_imageSequence->getLength();
_imageSequence->seek(position);
OSG_NOTICE<<"InteractiveImageSequenceOperator::set(..)"<<std::endl;
}
osg::ref_ptr<osg::ImageSequence> _imageSequence;
@@ -694,8 +725,7 @@ SlideEventHandler::SlideEventHandler(osgViewer::Viewer* viewer):
_timeDelayOnNewSlideWithMovies(0.25f),
_minimumTimeBetweenKeyPresses(0.25),
_timeLastKeyPresses(-1.0),
_requestReload(false),
_normalizedMousePosition(0.0f,0.0f)
_requestReload(false)
{
s_seh = this;
}
@@ -789,7 +819,6 @@ double SlideEventHandler::getCurrentTimeDelayBetweenSlides() const
return _timePerSlide;
}
void SlideEventHandler::operator()(osg::Node* node, osg::NodeVisitor* nv)
{
osgGA::EventVisitor* ev = dynamic_cast<osgGA::EventVisitor*>(nv);
@@ -821,8 +850,6 @@ bool SlideEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIAction
}
//else OSG_NOTICE<<"SlideEventHandler::handle() "<<ea.getTime()<<std::endl;
_normalizedMousePosition.set(ea.getXnormalized(), ea.getYnormalized());
if (ea.getHandled()) return false;
switch(ea.getEventType())