FGFS-4.1/OpenSceneGraph
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Refactored osgManipulator so that CommandManager is no longer required, instead Dragger directly manages Constaints and associate Selections.

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This commit is contained in:
Robert Osfield
2009-06-30 11:39:39 +00:00
parent a73a403301
commit a2ae370c8e
16 changed files with 368 additions and 380 deletions
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154
examples/osgmanipulator/osgmanipulator.cpp
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@@ -38,6 +38,8 @@
#include <iostream>
// #define USE_COMMAND_MANAGER
osgManipulator::Dragger* createDragger(const std::string& name)
{
osgManipulator::Dragger* dragger = 0;
@@ -90,43 +92,6 @@ osgManipulator::Dragger* createDragger(const std::string& name)
}
osg::Node* createHUD()
{
osg::Geode* geode = new osg::Geode();
std::string timesFont("fonts/arial.ttf");
osg::StateSet* stateset = geode->getOrCreateStateSet();
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
osgText::Text* text = new osgText::Text;
geode->addDrawable( text );
osg::Vec3 position(50.0f,50.0f,0.0f);
text->setPosition(position);
text->setText("Use the Tab key to switch between the trackball and pick modes.");
text->setFont(timesFont);
osg::Camera* camera = new osg::Camera;
// set the projection matrix
camera->setProjectionMatrix(osg::Matrix::ortho2D(0,1280,0,1024));
// set the view matrix
camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera->setViewMatrix(osg::Matrix::identity());
// only clear the depth buffer
camera->setClearMask(GL_DEPTH_BUFFER_BIT);
// draw subgraph after main camera view.
camera->setRenderOrder(osg::Camera::POST_RENDER);
camera->addChild(geode);
return camera;
}
osg::Node* addDraggerToScene(osg::Node* scene, osgManipulator::CommandManager* cmdMgr, const std::string& name)
{
scene->getOrCreateStateSet()->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
@@ -141,13 +106,16 @@ osg::Node* addDraggerToScene(osg::Node* scene, osgManipulator::CommandManager* c
osg::Group* root = new osg::Group;
root->addChild(dragger);
root->addChild(selection);
root->addChild(createHUD());
float scale = scene->getBound().radius() * 1.6;
dragger->setMatrix(osg::Matrix::scale(scale, scale, scale) *
osg::Matrix::translate(scene->getBound().center()));
cmdMgr->connect(*dragger, *selection);
#ifdef USE_COMMAND_MANAGER
cmdMgr->connect(*dragger, *selection);
#else
dragger->addSelection(selection);
#endif
return root;
}
@@ -247,104 +215,7 @@ osg::Node* createDemoScene(osgManipulator::CommandManager* cmdMgr) {
return root;
}
class PickModeHandler : public osgGA::GUIEventHandler
{
public:
enum Modes
{
VIEW = 0,
PICK
};
PickModeHandler():
_mode(VIEW),
_activeDragger(0)
{
}
bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa,
osg::Object*, osg::NodeVisitor*)
{
osgViewer::View* view = dynamic_cast<osgViewer::View*>(&aa);
if (!view) return false;
if (ea.getKey() == osgGA::GUIEventAdapter::KEY_Tab &&
ea.getEventType() == osgGA::GUIEventAdapter::KEYDOWN &&
_activeDragger == 0)
{
_mode = ! _mode;
}
if (VIEW == _mode) return false;
switch (ea.getEventType())
{
case osgGA::GUIEventAdapter::PUSH:
{
osgUtil::LineSegmentIntersector::Intersections intersections;
_pointer.reset();
if (view->computeIntersections(ea.getX(),ea.getY(),intersections))
{
_pointer.setCamera(view->getCamera());
_pointer.setMousePosition(ea.getX(), ea.getY());
for(osgUtil::LineSegmentIntersector::Intersections::iterator hitr = intersections.begin();
hitr != intersections.end();
++hitr)
{
_pointer.addIntersection(hitr->nodePath, hitr->getLocalIntersectPoint());
}
for (osg::NodePath::iterator itr = _pointer._hitList.front().first.begin();
itr != _pointer._hitList.front().first.end();
++itr)
{
osgManipulator::Dragger* dragger = dynamic_cast<osgManipulator::Dragger*>(*itr);
if (dragger)
{
dragger->handle(_pointer, ea, aa);
_activeDragger = dragger;
break;
}
}
}
}
case osgGA::GUIEventAdapter::DRAG:
case osgGA::GUIEventAdapter::RELEASE:
{
if (_activeDragger)
{
_pointer._hitIter = _pointer._hitList.begin();
_pointer.setCamera(view->getCamera());
_pointer.setMousePosition(ea.getX(), ea.getY());
_activeDragger->handle(_pointer, ea, aa);
}
break;
}
default:
break;
}
if (ea.getEventType() == osgGA::GUIEventAdapter::RELEASE)
{
_activeDragger = 0;
_pointer.reset();
}
return true;
}
private:
unsigned int _mode;
osgManipulator::Dragger* _activeDragger;
osgManipulator::PointerInfo _pointer;
};
//
int main( int argc, char **argv )
{
@@ -397,7 +268,12 @@ int main( int argc, char **argv )
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
// create a command manager
osg::ref_ptr<osgManipulator::CommandManager> cmdMgr = new osgManipulator::CommandManager;
osg::ref_ptr<osgManipulator::CommandManager> cmdMgr;
#ifdef USE_COMMAND_MANAGER
cmdMgr = new osgManipulator::CommandManager;
#endif
// if no model has been successfully loaded report failure.
bool tragger2Scene(true);
@@ -434,7 +310,7 @@ int main( int argc, char **argv )
} else {
viewer.setSceneData(loadedModel.get());
}
// viewer.addEventHandler(new PickModeHandler());
return viewer.run();
}