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From Mikhail Izmestev, "I have discovered problem with draggers from osgManipulator in HUD.

Browse Source 
This problem caused because osgManipulator::Dragger uses matrices of top camera instead last
absolute Camera in NodePath.

I attached modified osgManipulator/Dragger.cpp file, where added code for finding last absolute
camera. With this changes draggers works in HUD.

Example for demonstrate this problem you can find in osg-users list [1].

Mikhail.

[1] http://thread.gmane.org/gmane.comp.graphics.openscenegraph.user/62636
"
This commit is contained in:
Robert Osfield 2010-10-29 15:18:34 +00:00
parent 0328691f76
commit b5c57c3d68
1 changed files with 19 additions and 4 deletions
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23
src/osgManipulator/Dragger.cpp
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@ -309,9 +309,6 @@ bool Dragger::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter&
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)
@ -327,6 +324,24 @@ bool Dragger::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter&
{
if (dragger==this)
{
osg::Camera *rootCamera = view->getCamera();
osg::NodePath nodePath = _pointer._hitList.front().first;
osg::NodePath::reverse_iterator ritr;
for(ritr = nodePath.rbegin();
ritr != nodePath.rend();
++ritr)
{
osg::Camera* camera = dynamic_cast<osg::Camera*>(*ritr);
if (camera && (camera->getReferenceFrame()!=osg::Transform::RELATIVE_RF || camera->getParents().empty()))
{
rootCamera = camera;
break;
}
}
_pointer.setCamera(rootCamera);
_pointer.setMousePosition(ea.getX(), ea.getY());
dragger->handle(_pointer, ea, aa);
dragger->setDraggerActive(true);
handled = true;
@ -341,7 +356,7 @@ bool Dragger::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter&
if (_draggerActive)
{
_pointer._hitIter = _pointer._hitList.begin();
_pointer.setCamera(view->getCamera());
// _pointer.setCamera(view->getCamera());
_pointer.setMousePosition(ea.getX(), ea.getY());
handle(_pointer, ea, aa);