Re: [osg-users] problem zooming using mouse middle scroll in trackballmanipulator
Hi,
I solved the question as below:
void AdapterWidget::wheelEvent(QWheelEvent * event)
{
float delta = event-delta() / 8.0;
if( delta==0 )return;
osgGA::GUIEventAdapter* ea = _gw-getEventQueue()-createEvent();
ea-setTime( _gw-getEventQueue()-getTime() );
ea-setX( event-x() );
ea-setY( event-y() );
ea-setEventType( osgGA::GUIEventAdapter::SCROLL );
if( event-orientation() == Qt::Vertical ) {
if( delta0 ){
ea-setScrollingMotionDelta(0.0, delta);
ea-setScrollingMotion( osgGA::GUIEventAdapter::SCROLL_UP );
}
else{
ea-setScrollingMotionDelta(0.0, -delta);
ea-setScrollingMotion(
osgGA::GUIEventAdapter::SCROLL_DOWN );
}
} else {
if( delta0 ){
ea-setScrollingMotionDelta(delta, 0.0);
ea-setScrollingMotion( osgGA::GUIEventAdapter::SCROLL_LEFT );
}
else{
ea-setScrollingMotionDelta(-delta, 0.0);
ea-setScrollingMotion(
osgGA::GUIEventAdapter::SCROLL_RIGHT );
}
}
_gw-getEventQueue()-addEvent(ea);
}
class MyManipulator: public osgGA::MatrixManipulator
bool MyManipulator::handle(const osgGA::GUIEventAdapter ea,
osgGA::GUIActionAdapter us)
{
switch(ea.getEventType()){
case( osgGA::GUIEventAdapter::SCROLL ):{
osgGA::GUIEventAdapter::ScrollingMotion sm =
ea.getScrollingMotion();
switch( sm ){
case osgGA::GUIEventAdapter::SCROLL_UP :
// do zoom out
return true
case osgGA::GUIEventAdapter::SCROLL_DOWN :
// do zoom in
return true;
default :
break;
}
}
..
}
}
you can try it, good luck!
2008/5/6 Srikanth Bemineni [EMAIL PROTECTED]:
I am experimenting with the osgQTviewer.I am not able to zoom in when the
mouse wheel is scrolled.I am using trackballmanipulator.I am not able to
find a good documentation about camera manipulators.Even the Reference doc
doesn't mention the explanation of manipulators.
AdapterWidget::AdapterWidget( ViewerQT *source ,QWidget * parent, const char
* name, const QGLWidget * shareWidget, WindowFlags f):
#if USE_QT4
QGLWidget(parent, shareWidget, f)
#else
QGLWidget(parent, name, shareWidget, f)
#endif
{
m_source = source;
resize( 800 ,600 );
/* To Remove this */
/*
* // create the window to draw to.
* */
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-x = 200;
traits-y = 200;
traits-width = 800;
traits-height = 600;
traits-windowDecoration = true;
traits-doubleBuffer = true;
traits-sharedContext = 0;
osg::ref_ptrosg::GraphicsContext gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
_gw = new osgViewer::GraphicsWindowEmbedded(traits.get());
#if USE_QT4
setFocusPolicy(Qt::ClickFocus);
#else
setFocusPolicy(QWidget::ClickFocus);
#endif
}
..
... all the other event handling
...
void AdapterWidget::mouseMoveEvent( QMouseEvent* event )
{
_gw-getEventQueue()-mouseMotion(event-x(), event-y());
}
void AdapterWidget::wheelEvent( QWheelEvent *event )
{
//m_source-wheelEvent( event );
if( event-delta() 0 )
_gw-getEventQueue()-mouseScroll(osgGA::GUIEventAdapter::SCROLL_UP );
else
_gw-getEventQueue()-mouseScroll(osgGA::GUIEventAdapter::SCROLL_DOWN );
}
ViewerQT::
ViewerQT(QWidget * parent, const char * name, const QGLWidget * shareWidget
, WindowFlags f ):
AdapterWidget( this , parent, name, shareWidget, f )
{
znear = 1.0f;
zfar = 1.0f;
getCamera()-setViewport(new osg::Viewport(0,0,width(),height()));
//getCamera()-setProjectionMatrixAsPerspective(30.0f,
static_castdouble(width())/static_castdouble(height()), 1.0f, 1.0f);
getCamera()-setGraphicsContext(getGraphicsWindow());
/* To Remove*/
osg::ref_ptrosgGA::StateSetManipulator statesetManipulator = new
osgGA::StateSetManipulator(getCamera()-getStateSet());
addEventHandler(statesetManipulator.get());
/*to remove end*/
addEventHandler(new PickHandler());
setThreadingModel(osgViewer::Viewer::SingleThreaded);
connect(_timer, SIGNAL(timeout()), this, SLOT(updateGL()));
_timer.start(10);
_manipulator = new osgGA::TrackballManipulator;
setCameraManipulator(_manipulator);
coutMinimum distance _manipulator-getMinimumDistance()endl;
coutHomepostion
compute_manipulator-getAutoComputeHomePosition()endl;
//_manipulator-setAutoComputeHomePosition(false);
_manipulator-setMinimumDistance(1000);
osg::Vec3d eye;
osg::Vec3d center;
osg::Vec3d up;
_manipulator-getHomePosition( eye , center , up );
coutx y z eye.x()eye.y()eye.z()endl;
coutx y z center.x()center.y()center.z()endl;
coutx y z up.x()up.y()up.z()endl;
}
void
ViewerQT::
VwheelEvent( QWheelEvent *event
Re: [osg-users] problem zooming using mouse middle scroll in trackballmanipulator
On Tue, May 6, 2008 at 6:05 PM, Srikanth Bemineni [EMAIL PROTECTED] wrote: Hi, Can somebody please reply to the below question. Is there a CJM or Postscript output support in Openscenegraph No, its a scene graph for doing 3D rendering. If you want hard copy output then you'll need to take a screen image snapshot then pass this image data to a tool that provides the hard copy output support. BTW, when asking a new questions about a different topic please use a new thread as this makes it much easier for people to follow. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] problem zooming using mouse middle scroll in trackballmanipulator
Hi Srikanth,
The osgGA camera manipulators don't currently check the scroll wheel
at all. They are all open source so if you need this feature just
dive into the implementation and add them and then send me the changes
so we can get it merged with SVN.
Robert.
On Mon, May 5, 2008 at 11:46 PM, Srikanth Bemineni
[EMAIL PROTECTED] wrote:
I am experimenting with the osgQTviewer.I am not able to zoom in when the
mouse wheel is scrolled.I am using trackballmanipulator.I am not able to
find a good documentation about camera manipulators.Even the Reference doc
doesn't mention the explanation of manipulators.
AdapterWidget::AdapterWidget( ViewerQT *source ,QWidget * parent, const
char * name, const QGLWidget * shareWidget, WindowFlags f):
#if USE_QT4
QGLWidget(parent, shareWidget, f)
#else
QGLWidget(parent, name, shareWidget, f)
#endif
{
m_source = source;
resize( 800 ,600 );
/* To Remove this */
/*
* // create the window to draw to.
* */
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-x = 200;
traits-y = 200;
traits-width = 800;
traits-height = 600;
traits-windowDecoration = true;
traits-doubleBuffer = true;
traits-sharedContext = 0;
osg::ref_ptrosg::GraphicsContext gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
_gw = new osgViewer::GraphicsWindowEmbedded(traits.get());
#if USE_QT4
setFocusPolicy(Qt::ClickFocus);
#else
setFocusPolicy(QWidget::ClickFocus);
#endif
}
..
... all the other event handling
...
void AdapterWidget::mouseMoveEvent( QMouseEvent* event )
{
_gw-getEventQueue()-mouseMotion(event-x(), event-y());
}
void AdapterWidget::wheelEvent( QWheelEvent *event )
{
//m_source-wheelEvent( event );
if( event-delta() 0 )
_gw-getEventQueue()-mouseScroll(osgGA::GUIEventAdapter::SCROLL_UP );
else
_gw-getEventQueue()-mouseScroll(osgGA::GUIEventAdapter::SCROLL_DOWN
);
}
ViewerQT::
ViewerQT(QWidget * parent, const char * name, const QGLWidget * shareWidget
, WindowFlags f ):
AdapterWidget( this , parent, name, shareWidget, f )
{
znear = 1.0f;
zfar = 1.0f;
getCamera()-setViewport(new osg::Viewport(0,0,width(),height()));
//getCamera()-setProjectionMatrixAsPerspective(30.0f,
static_castdouble(width())/static_castdouble(height()), 1.0f, 1.0f);
getCamera()-setGraphicsContext(getGraphicsWindow());
/* To Remove*/
osg::ref_ptrosgGA::StateSetManipulator statesetManipulator = new
osgGA::StateSetManipulator(getCamera()-getStateSet());
addEventHandler(statesetManipulator.get());
/*to remove end*/
addEventHandler(new PickHandler());
setThreadingModel(osgViewer::Viewer::SingleThreaded);
connect(_timer, SIGNAL(timeout()), this, SLOT(updateGL()));
_timer.start(10);
_manipulator = new osgGA::TrackballManipulator;
setCameraManipulator(_manipulator);
coutMinimum distance _manipulator-getMinimumDistance()endl;
coutHomepostion
compute_manipulator-getAutoComputeHomePosition()endl;
//_manipulator-setAutoComputeHomePosition(false);
_manipulator-setMinimumDistance(1000);
osg::Vec3d eye;
osg::Vec3d center;
osg::Vec3d up;
_manipulator-getHomePosition( eye , center , up );
coutx y z eye.x()eye.y()eye.z()endl;
coutx y z center.x()center.y()center.z()endl;
coutx y z up.x()up.y()up.z()endl;
}
void
ViewerQT::
VwheelEvent( QWheelEvent *event )
{
coutevent-delta()endl;
if( event-delta() 0 )
{
znear = znear + 120.0f;
}
else
{
if( (znear - 120) = 1.0 )
{
znear = znear - 120;
}
}
}
void
ViewerQT::
paintGL()
{
osg::Vec3d eye;
osg::Vec3d center;
osg::Vec3d up;
_manipulator-getHomePosition( eye , center , up );
couteye x y z eye.x() eye.y() eye.z()endl;
coutcenter x y z center.x() center.y()
center.z()endl;
coutup x y z up.x() up.y() up.z()endl;
frame();
}
and this is how I am creating the Viewer window.
I tried to move the perspective view.
I tried to translate the camera matrix.
I tried to set the home positon
but none of the above things seems to work in moving the camera or
zooming.I am new to opengl and open scene graph any guide would be really
helpful.
Thank You
--
With Regards
Srikanth Bemineni
Geotrace Technologies
281-497-8440 extn 228
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] problem zooming using mouse middle scroll in trackballmanipulator
Hi,
Can somebody please reply to the below question.
Is there a CJM or Postscript output support in Openscenegraph
Srikanth
Srikanth Bemineni wrote:
I am experimenting with the osgQTviewer.I am not able to zoom in when
the mouse wheel is scrolled.I am using trackballmanipulator.I am not
able to find a good documentation about camera manipulators.Even the
Reference doc doesn't mention the explanation of manipulators.
AdapterWidget::AdapterWidget( ViewerQT *source ,QWidget * parent,
const char * name, const QGLWidget * shareWidget, WindowFlags f):
#if USE_QT4
QGLWidget(parent, shareWidget, f)
#else
QGLWidget(parent, name, shareWidget, f)
#endif
{
m_source = source;
resize( 800 ,600 );
/* To Remove this */
/*
* // create the window to draw to.
* */
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-x = 200;
traits-y = 200;
traits-width = 800;
traits-height = 600;
traits-windowDecoration = true;
traits-doubleBuffer = true;
traits-sharedContext = 0;
osg::ref_ptrosg::GraphicsContext gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
_gw = new osgViewer::GraphicsWindowEmbedded(traits.get());
#if USE_QT4
setFocusPolicy(Qt::ClickFocus);
#else
setFocusPolicy(QWidget::ClickFocus);
#endif
}
..
... all the other event handling
...
void AdapterWidget::mouseMoveEvent( QMouseEvent* event )
{
_gw-getEventQueue()-mouseMotion(event-x(), event-y());
}
void AdapterWidget::wheelEvent( QWheelEvent *event )
{
//m_source-wheelEvent( event );
if( event-delta() 0 )
_gw-getEventQueue()-mouseScroll(osgGA::GUIEventAdapter::SCROLL_UP );
else
_gw-getEventQueue()-mouseScroll(osgGA::GUIEventAdapter::SCROLL_DOWN );
}
ViewerQT::
ViewerQT(QWidget * parent, const char * name, const QGLWidget *
shareWidget , WindowFlags f ):
AdapterWidget( this , parent, name, shareWidget, f )
{
znear = 1.0f;
zfar = 1.0f;
getCamera()-setViewport(new osg::Viewport(0,0,width(),height()));
//getCamera()-setProjectionMatrixAsPerspective(30.0f,
static_castdouble(width())/static_castdouble(height()), 1.0f,
1.0f);
getCamera()-setGraphicsContext(getGraphicsWindow());
/* To Remove*/
osg::ref_ptrosgGA::StateSetManipulator statesetManipulator = new
osgGA::StateSetManipulator(getCamera()-getStateSet());
addEventHandler(statesetManipulator.get());
/*to remove end*/
addEventHandler(new PickHandler());
setThreadingModel(osgViewer::Viewer::SingleThreaded);
connect(_timer, SIGNAL(timeout()), this, SLOT(updateGL()));
_timer.start(10);
_manipulator = new osgGA::TrackballManipulator;
setCameraManipulator(_manipulator);
coutMinimum distance _manipulator-getMinimumDistance()endl;
coutHomepostion
compute_manipulator-getAutoComputeHomePosition()endl;
//_manipulator-setAutoComputeHomePosition(false);
_manipulator-setMinimumDistance(1000);
osg::Vec3d eye;
osg::Vec3d center;
osg::Vec3d up;
_manipulator-getHomePosition( eye , center , up );
coutx y z eye.x()eye.y()eye.z()endl;
coutx y z center.x()center.y()center.z()endl;
coutx y z up.x()up.y()up.z()endl;
}
void
ViewerQT::
VwheelEvent( QWheelEvent *event )
{
coutevent-delta()endl;
if( event-delta() 0 )
{
znear = znear + 120.0f;
}
else
{
if( (znear - 120) = 1.0 )
{
znear = znear - 120;
}
}
}
void
ViewerQT::
paintGL()
{
osg::Vec3d eye;
osg::Vec3d center;
osg::Vec3d up;
_manipulator-getHomePosition( eye , center , up );
couteye x y z eye.x() eye.y() eye.z()endl;
coutcenter x y z center.x() center.y()
center.z()endl;
coutup x y z up.x() up.y() up.z()endl;
frame();
}
and this is how I am creating the Viewer window.
I tried to move the perspective view.
I tried to translate the camera matrix.
I tried to set the home positon
but none of the above things seems to work in moving the camera or
zooming.I am new to opengl and open scene graph any guide would be
really helpful.
Thank You
--
With Regards
Srikanth Bemineni
Geotrace Technologies
281-497-8440 extn 228
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
