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Updated to slideshow3D to support animation + pausing of animation.

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Updated associated osg/osgUtil classes that provide animation pausing.
This commit is contained in:
Robert Osfield
2003-11-03 23:13:31 +00:00
parent de77cede2b
commit bc7622149d
13 changed files with 679 additions and 116 deletions
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84
examples/slideshow3D/SlideEventHandler.cpp
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@@ -1,6 +1,9 @@
#include "SlideEventHandler.h"
#include "SlideShowConstructor.h"
#include <osg/AnimationPath>
#include <osgUtil/TransformCallback>
class FindNamedSwitchVisitor : public osg::NodeVisitor
{
public:
@@ -109,7 +112,7 @@ bool SlideEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIAction
{
case(osgGA::GUIEventAdapter::FRAME):
{
if (_autoSteppingActive)
if (_autoSteppingActive && !_pause)
{
double time = ea.time();
@@ -183,12 +186,17 @@ bool SlideEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIAction
previousSlide();
return true;
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Pause)
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Pause ||
ea.getKey()=='p')
{
_pause = !_pause;
if (_pause) std::cout<<"Pause"<<std::endl;
else std::cout<<"End Pause"<<std::endl;
resetUpdateCallbackActivity();
}
else if (ea.getKey()=='r')
{
resetUpdateCallbacks();
}
return false;
@@ -297,3 +305,71 @@ bool SlideEventHandler::previousLayer()
if (_activeLayer>0) return selectLayer(_activeLayer-1);
else return false;
}
class ResetUpdateCallbacksVisitor : public osg::NodeVisitor
{
public:
ResetUpdateCallbacksVisitor(bool pause):
// osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN),
_pause(pause) {}
void apply(osg::Node& node)
{
osg::AnimationPathCallback* apc = dynamic_cast<osg::AnimationPathCallback*>(node.getUpdateCallback());
osgUtil::TransformCallback* tc = dynamic_cast<osgUtil::TransformCallback*>(node.getUpdateCallback());
if (apc)
{
apc->reset();
apc->update(node);
}
if (tc)
{
//tc->reset();
}
traverse(node);
}
bool _pause;
};
void SlideEventHandler::resetUpdateCallbacks()
{
ResetUpdateCallbacksVisitor rucv(_pause);
_presentationSwitch->accept(rucv);
}
class ActivityUpdateCallbacksVisitor : public osg::NodeVisitor
{
public:
ActivityUpdateCallbacksVisitor(bool pause):
// osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN),
_pause(pause) {}
void apply(osg::Node& node)
{
osg::AnimationPathCallback* apc = dynamic_cast<osg::AnimationPathCallback*>(node.getUpdateCallback());
osgUtil::TransformCallback* tc = dynamic_cast<osgUtil::TransformCallback*>(node.getUpdateCallback());
if (apc)
{
apc->setPause(_pause);
}
if (tc)
{
tc->setPause(_pause);
}
traverse(node);
}
bool _pause;
};
void SlideEventHandler::resetUpdateCallbackActivity()
{
ActivityUpdateCallbacksVisitor aucv(_pause);
_presentationSwitch->accept(aucv);
}