Re: [osg-users] Translate problem
Hi Sujan,
viewerWid-getView()-getCamera()-setViewMatrix(::osg::Matrix::translate(1000.5,
0.0, 0.0));
this code is wrong. Also, you have attached TrackballCameraManipulator so
it will fight you against the translation you do.
If you want to translate an object in the scene, then use
osg::MatrixTransofrm as parent of your object and there set the
translation. If you want to change the ViewMatrix, then set the inverse of
your world translation, but also update the CameraManipulator, so something
like:
osg::Matrixd myMatrix = osg::Matrix::translate(1000.5, 0.0, 0.0);
viewerWid-getView()-
getCamera()-setViewMatrix(osg::Matrix::inverse(myMatrix));
viewerWid-getView()-getCameraManipulator()-setByMatrix(myMatrix);
If you are after custom mouse management, then I would inherit from
TrackballcameraManipulator and override handle - look in the code od
TrackballCameraManipulator::handle since it is the closest to your wish of
mouse handling
Hope this helps a bit
Nick
On Thu, May 9, 2013 at 4:09 AM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
I am trying to translate my objects in scene, when the right mouse button
is pressed. But it is not moving. Pls check the snippet.
[code]
//CSGraphicsView
//.h
class CSGraphicsView : public osgQt::GLWidget
{
Q_OBJECT
public:
CSGraphicsView(QWidget* parent=0);
~CSGraphicsView();
virtual void mousePressEvent(QMouseEvent *e);
virtual void mouseReleaseEvent(QMouseEvent *e);
virtual void mouseMoveEvent(QMouseEvent *e);
};
#endif // GVIEW_H
.cpp
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
if(e-button()==Qt::LeftButton)
{
QMessageBox msg;
msg.setText(Left Mouse pressed);
msg.exec();
}
else if(e-button()==Qt::RightButton)
{
//QMessageBox msg;
//msg.setText(Right Mouse pressed);
//msg.exec();
ViewerWidget* viewerWid = qobject_castViewerWidget*(parent());
viewerWid-getView()-getCamera()-setViewMatrix(::osg::Matrix::translate(1000.5,
0.0, 0.0));
}
else if(e-button()==Qt::MiddleButton)
{
QMessageBox msg;
msg.setText(Middle Mouse pressed);
msg.exec();
}
else
return;
}
//This is my ViewerWidget class
class ViewerWidget : public QWidget, public osgViewer::CompositeViewer
{
Q_OBJECT
public:
ViewerWidget(osgViewer::ViewerBase::ThreadingModel
threadingModel=osgViewer::CompositeViewer::SingleThreaded, osg::Group*
scene=NULL);
osgQt::GLWidget* addViewWidget( osg::Camera* camera, osg::Group* scene );
osg::Camera* createCamera( int x, int y, int w, int h, const std::string
name=, bool windowDecoration=false );
virtual void paintEvent( QPaintEvent* event );
osgViewer::View* getView();
protected:
QTimer _timer;
osgQt::GraphicsWindowQt* gw;
CSGraphicsView* gView;
osgViewer::View* view;
};
#endif // VIEWERWIDGET_H
//viewerwidget.cpp
ViewerWidget::ViewerWidget(osgViewer::ViewerBase::ThreadingModel
threadingModel, osg::Group* scene) : QWidget()
{
setThreadingModel(threadingModel);
gView = (CSGraphicsView*) (addViewWidget(
createCamera(0,0,100,100), scene ));
QGridLayout* grid = new QGridLayout;
grid-addWidget( gView, 0, 0 );
setLayout( grid );
connect( _timer, SIGNAL(timeout()), this, SLOT(update()) );
_timer.start( 10 );
}
osgQt::GLWidget* ViewerWidget::addViewWidget( osg::Camera* camera,
osg::Group* scene )
{
view = new osgViewer::View;
view-setCamera( camera );
addView( view );
view-setSceneData( scene );
view-addEventHandler( new osgViewer::StatsHandler );
view-setCameraManipulator( new osgGA::TrackballManipulator );
osg::ref_ptrosgGA::StateSetManipulator statesetManipulator = new
osgGA::StateSetManipulator(view-getCamera()-getStateSet());
view-addEventHandler(statesetManipulator.get());
gw = dynamic_castosgQt::GraphicsWindowQt* (
camera-getGraphicsContext() );
return gw ? gw-getGLWidget() : NULL;
}
osg::Camera* ViewerWidget::createCamera( int x, int y, int w, int h, const
std::string name, bool windowDecoration )
{
gView = new CSGraphicsView(this);
gView-setGeometry(x, y, w, h);
osg::DisplaySettings* ds =
osg::DisplaySettings::instance().get();
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-inheritedWindowData = new osgQt::GraphicsWindowQt::WindowData(
gView );
traits-windowName = name;
traits-windowDecoration = windowDecoration;
traits-x = x;
traits-y = y;
traits-width = w;
traits-height = h;
traits-doubleBuffer = true;
traits-alpha = ds-getMinimumNumAlphaBits();
traits-stencil = ds-getMinimumNumStencilBits();
traits-sampleBuffers = ds-getMultiSamples();
Re: [osg-users] Translate problem
Dear Nick thanks a lot for your code snippet. I appreciate it. I am after
custom mouse event handling, I dont want TrackBallManipulator as I am more
interested to manage events from Qt.
On Thu, May 9, 2013 at 2:35 PM, Trajce Nikolov NICK
trajce.nikolov.n...@gmail.com wrote:
Hi Sujan,
viewerWid-getView()-getCamera()-setViewMatrix(::osg::Matrix::translate(1000.5,
0.0, 0.0));
this code is wrong. Also, you have attached TrackballCameraManipulator so
it will fight you against the translation you do.
If you want to translate an object in the scene, then use
osg::MatrixTransofrm as parent of your object and there set the
translation. If you want to change the ViewMatrix, then set the inverse of
your world translation, but also update the CameraManipulator, so something
like:
osg::Matrixd myMatrix = osg::Matrix::translate(1000.5, 0.0, 0.0);
viewerWid-getView()-
getCamera()-setViewMatrix(osg::Matrix::inverse(myMatrix));
viewerWid-getView()-getCameraManipulator()-setByMatrix(myMatrix);
If you are after custom mouse management, then I would inherit from
TrackballcameraManipulator and override handle - look in the code od
TrackballCameraManipulator::handle since it is the closest to your wish of
mouse handling
Hope this helps a bit
Nick
On Thu, May 9, 2013 at 4:09 AM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
I am trying to translate my objects in scene, when the right mouse button
is pressed. But it is not moving. Pls check the snippet.
[code]
//CSGraphicsView
//.h
class CSGraphicsView : public osgQt::GLWidget
{
Q_OBJECT
public:
CSGraphicsView(QWidget* parent=0);
~CSGraphicsView();
virtual void mousePressEvent(QMouseEvent *e);
virtual void mouseReleaseEvent(QMouseEvent *e);
virtual void mouseMoveEvent(QMouseEvent *e);
};
#endif // GVIEW_H
.cpp
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
if(e-button()==Qt::LeftButton)
{
QMessageBox msg;
msg.setText(Left Mouse pressed);
msg.exec();
}
else if(e-button()==Qt::RightButton)
{
//QMessageBox msg;
//msg.setText(Right Mouse pressed);
//msg.exec();
ViewerWidget* viewerWid = qobject_castViewerWidget*(parent());
viewerWid-getView()-getCamera()-setViewMatrix(::osg::Matrix::translate(1000.5,
0.0, 0.0));
}
else if(e-button()==Qt::MiddleButton)
{
QMessageBox msg;
msg.setText(Middle Mouse pressed);
msg.exec();
}
else
return;
}
//This is my ViewerWidget class
class ViewerWidget : public QWidget, public osgViewer::CompositeViewer
{
Q_OBJECT
public:
ViewerWidget(osgViewer::ViewerBase::ThreadingModel
threadingModel=osgViewer::CompositeViewer::SingleThreaded, osg::Group*
scene=NULL);
osgQt::GLWidget* addViewWidget( osg::Camera* camera, osg::Group* scene );
osg::Camera* createCamera( int x, int y, int w, int h, const std::string
name=, bool windowDecoration=false );
virtual void paintEvent( QPaintEvent* event );
osgViewer::View* getView();
protected:
QTimer _timer;
osgQt::GraphicsWindowQt* gw;
CSGraphicsView* gView;
osgViewer::View* view;
};
#endif // VIEWERWIDGET_H
//viewerwidget.cpp
ViewerWidget::ViewerWidget(osgViewer::ViewerBase::ThreadingModel
threadingModel, osg::Group* scene) : QWidget()
{
setThreadingModel(threadingModel);
gView = (CSGraphicsView*) (addViewWidget(
createCamera(0,0,100,100), scene ));
QGridLayout* grid = new QGridLayout;
grid-addWidget( gView, 0, 0 );
setLayout( grid );
connect( _timer, SIGNAL(timeout()), this, SLOT(update()) );
_timer.start( 10 );
}
osgQt::GLWidget* ViewerWidget::addViewWidget( osg::Camera* camera,
osg::Group* scene )
{
view = new osgViewer::View;
view-setCamera( camera );
addView( view );
view-setSceneData( scene );
view-addEventHandler( new osgViewer::StatsHandler );
view-setCameraManipulator( new osgGA::TrackballManipulator );
osg::ref_ptrosgGA::StateSetManipulator statesetManipulator = new
osgGA::StateSetManipulator(view-getCamera()-getStateSet());
view-addEventHandler(statesetManipulator.get());
gw = dynamic_castosgQt::GraphicsWindowQt* (
camera-getGraphicsContext() );
return gw ? gw-getGLWidget() : NULL;
}
osg::Camera* ViewerWidget::createCamera( int x, int y, int w, int h,
const std::string name, bool windowDecoration )
{
gView = new CSGraphicsView(this);
gView-setGeometry(x, y, w, h);
osg::DisplaySettings* ds =
osg::DisplaySettings::instance().get();
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-inheritedWindowData = new osgQt::GraphicsWindowQt::WindowData(
gView );
traits-windowName = name;
traits-windowDecoration = windowDecoration;
traits-x
[osg-users] Pan in OSG QT
I am trying to implement my own pan functionality in osg scene using Qt.
Please tell me if it is right ?.But it's not happening.
Check my snippet.
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
lastPos = e-pos();
}
void CSGraphicsView::mouseMoveEvent(QMouseEvent *e)
{
float dx = (e-y() - lastPos.y());
float dy = (e-x() - lastPos.x());
const bool panFlag= ( e-buttons() Qt::MidButton );
const bool rotateFlag = ( e-buttons() Qt::LeftButton );
const bool zoomFlag = ( e-buttons() Qt::RightButton );
if ( zoomFlag )
{
zoom( dy );
}
else if ( rotateFlag )
{
rotate( dx, dy );
}
else if ( panFlag )
{
pan( dx, dy );
}
viewer-frame();
lastPos = e-pos();
}
void CSGraphicsView::pan( int dx, int dy )
{
viewer-getView()-getCamera()-setViewMatrix(osg::Matrix::translate(dx,dy,0));
}
//viewer is composite viewer osg
//getView() returns the osgViewer::View
//but my object is not moving what s wrong in this. please help.
--
Thanks Regards
Sujan
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Re: [osg-users] Extrude Geometry
Hi Braden,
I can't see a way for us to directly help you as the problem is in your own
code, the code snippet your've provided doesn't appear to tally with the
error message you've reported so we are really far more in the dark than
you.
The only thing I can say is that in general it should be fine to modify
geometry during the update or event traversals like you are doing, but if
you viewer is running mulit-threaded (the osgViewer will run multi-thread
if you have multi-cores by default) then you'll need to tell the OSG that
those objects you are modifying are dynamically modified by setting their
DataVariance to DYNAMIC, i.e. geometry-setDataVariance(osg::DYNAMIC); as
this will tell the draw traversal not to let the next frame to commence
till this dynamic objects has been rendered.
Robert.
On 7 May 2013 20:14, Braden Edmunds edmu...@reaction-eng.com wrote:
I've roughly followed the osgmanipulator.cpp example to create
osgManipulator::Translate1DDragger objects and link them to my custom
geometry items and everything works fine. I'm encountering a problem when I
try to update a geometry item inside of the traverse method. The following
code is where it breaks:
Code:
void DraggerContainer::traverse(osg::NodeVisitor nv)
{
//setup
//
osg::Vec3 trans = _dragger-getMatrix().getTrans();
_dragger-setMatrix(
osg::Matrix::rotate(osg::inDegrees(degrees),rotationAxis)
* osg::Matrix::scale(scaleFactor)
* osg::Matrix::translate(trans)); //re-position the draggable item
if(prev_trans.length() != trans.length())
{
UpdateGeometry(trans); // --- Breaks after this returns
}
osg::Group::traverse(nv);
}
The error is vector iterator not incrementable vector line 99, but this
error is only produced after running through functions in viewer.dll and
osg.dll.
I'm wondering if this is the correct way to extrude geometry on the fly,
and if adding nodes during the traverse call will cause an iterator to
become invalid.
Thanks in advance,
Braden
[/code]
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Re: [osg-users] PointSprite Texture orientation
Hi Daniel, For the osgParticle::PreciptiationEffect I used quads rather than point sprites as point sprites are just appropriate for circular points or cases where it's OK for the texture to be screen aligned. With modern graphics cards I'd just pass a point to the vertex shader and have a geometry shader generate a quad with the appropriate geometry and texture coordinates. Robert. On 8 May 2013 14:02, Daniel Schmid daniel.sch...@swiss-simtec.ch wrote: Hi all I use pointsprites to simulate precipitation (rain/snow). The implementation is completed and works very well. Now the end user decided to rotate the viewport about 90 degrees. The problem is now that the pointsprite texture coordinates to not take into accout the rotated viewport and the raindrops (small lines) are transversly and are not oriented in their falling direction. I tried to set a TexGen object in the stateset but what arguments do I have to set? Thank you! Cheers, Daniel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53959#53959 ___ 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] OcclusionQueryNode and Depth Splitting
Hi Pablo, You are the first person to report trying to combine z portioning and occlusion query, so while it might be possible you might be the first to try :-) The only way I can think of it working would be to doing the occlusion query work per partition, as the occlusion query has to be in the same depth range as the objects you are querying against - you can't go changing the projection matrix in between. Robert. On 8 May 2013 22:21, Pablo Carneiro Elias pablo.c...@gmail.com wrote: Hi all, I am facing a problem when trying to use the occlusion query node while implementing Z splitting for rendering large scenes. I know osg has z splitting but I had to implement by my self since I have a separated frustum and projection system (projection matrices are placed within osg camera). I am currently trying this: 1) I made a pausable occlusion query node that can be paused and its current passed state reamains unchanged. 2) I render the whole scene using a very large frustum (represeting the sum of all partitions, i.e the original large frustum). 3) I pause all OQN by using a visitor. 4) Render the scene using the partitions and the pre-set occlusion state that was paused while rendering the partitions. It is not working not even for a single object.. it blinks non-stop... Does anyone has any suggestion? Does Openscenegraph currently supports Z-Splitting along with OQNodes? Thanks! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53962#53962 ___ 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
[osg-users] Some OSG Windows functionality not available in Linux?
Hi, Posting this on behalf of a colleague: I have built OSG3.0.1 in /usr/local directory. But I found that few of the files were missing in /usr/local/include/osgShadow directory which are already there in the windows equivalent. NOTE: - I have a windows based application (contains OSG and OSGEarth) that I need to port to Linux. These files are: 1. ViewDependentShadowMap 2. ShadowSettings In addition to this, ShadowedScene file in /usr/local/include/osgShadow also appeared to be different, as it was not having setShadowSettings method in it. My questions are:- 1. Did I miss some flag while building OSG or are these files absent in the LINUX variant of OSG? 2. How to go about it if these files are absent by default in the LINUX variant? I guess, copying missing OSG files from windows to Linux will not serve my purpose. Please advise. Thanks in advance! Cheers, Nav Nav or Joseph? You can call me Nav :-) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53971#53971 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Some OSG Windows functionality not available in Linux?
Hi Nav, The OSG is almost indendtical for all platforms and your certainly shouldn't see any differences in osgShadow which has no platform specific files or features. The question has to be how did you end up with different versions of the OSG on Windows vs Linux, only you can answer this one. Have a look at the include/osg/Version file to see the version that you actually have installed. Robert. On 9 May 2013 11:18, Nav Joseph nk...@tatapowersed.com wrote: Hi, Posting this on behalf of a colleague: I have built OSG3.0.1 in /usr/local directory. But I found that few of the files were missing in /usr/local/include/osgShadow directory which are already there in the windows equivalent. NOTE: - I have a windows based application (contains OSG and OSGEarth) that I need to port to Linux. These files are: 1. ViewDependentShadowMap 2. ShadowSettings In addition to this, ShadowedScene file in /usr/local/include/osgShadow also appeared to be different, as it was not having setShadowSettings method in it. My questions are:- 1. Did I miss some flag while building OSG or are these files absent in the LINUX variant of OSG? 2. How to go about it if these files are absent by default in the LINUX variant? I guess, copying missing OSG files from windows to Linux will not serve my purpose. Please advise. Thanks in advance! Cheers, Nav Nav or Joseph? You can call me Nav :-) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53971#53971 ___ 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
[osg-users] for PAN problem
I am trying to pan my model pls check the code snippet below.
viewer = composite view.
getTransform() will return a osg::PositionAttitudeTransform list.
But my object is moving in z direction as well inwards outwards. What am I
doing wrong please help. Thanks Sujan
void CSGraphicsView::pan( float dx, float dy )
{
osg::Vec3 transform =
viewer-getTransform()-getTrans().first()-getPosition();
transform += osg::Vec3(dx,dy,0.0f);
viewer-getTransform()-getTrans().first()-setPosition(transform);
}
--
Thanks Regards
Sujan
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Re: [osg-users] Some OSG Windows functionality not available in Linux?
Oh thanks for that. He checked and saw that the Linux version was 3.0.1 and the windows version was 3.1.4. I guess he got one of the nightly builds, because 3.0.1 is the latest stable release. Nav or Joseph? You can call me Nav :-) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53974#53974 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] for PAN problem
Hi Sujan,
what are you trying to do with your 'pan'? To move an object, or to move
the camera (view) ?
Nick
On Thu, May 9, 2013 at 1:03 PM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
I am trying to pan my model pls check the code snippet below.
viewer = composite view.
getTransform() will return a osg::PositionAttitudeTransform list.
But my object is moving in z direction as well inwards outwards. What am I
doing wrong please help. Thanks Sujan
void CSGraphicsView::pan( float dx, float dy )
{
osg::Vec3 transform =
viewer-getTransform()-getTrans().first()-getPosition();
transform += osg::Vec3(dx,dy,0.0f);
viewer-getTransform()-getTrans().first()-setPosition(transform);
}
--
Thanks Regards
Sujan
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Re: [osg-users] for PAN problem
Nick I want to move the object a simple pan with mouse.
On Thu, May 9, 2013 at 5:32 PM, Trajce Nikolov NICK
trajce.nikolov.n...@gmail.com wrote:
Hi Sujan,
what are you trying to do with your 'pan'? To move an object, or to move
the camera (view) ?
Nick
On Thu, May 9, 2013 at 1:03 PM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
I am trying to pan my model pls check the code snippet below.
viewer = composite view.
getTransform() will return a osg::PositionAttitudeTransform list.
But my object is moving in z direction as well inwards outwards. What am
I doing wrong please help. Thanks Sujan
void CSGraphicsView::pan( float dx, float dy )
{
osg::Vec3 transform =
viewer-getTransform()-getTrans().first()-getPosition();
transform += osg::Vec3(dx,dy,0.0f);
viewer-getTransform()-getTrans().first()-setPosition(transform);
}
--
Thanks Regards
Sujan
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Re: [osg-users] for PAN problem
Hi Sujan,
here is how I would do it:
//Let load the model:
osg::Node* model = osgDB:: readFile();
// Create MatrixTransform on top of it
osg::MatrixTransform* mxt = new osg::MatrixTransform;
// create the scene
mxt-addChild(model);
viewer-setSceneData(mxt);
Now, having it like this, by modifying the matrix in the MatrixTransofrm,
you can move the loaded object in the scene as you are doing with
onPan(double dx, double dy), and don;t touch the view matrix
something like:
void onPan(double dx, double dy)
{
osg::MatrixTransform* mxt =
dynamic_castosg::MatrixTransform*(viewer-getSceneData());
mxt-setMatrix(osg::Matrix::translate(1000+dx, 0, 0))
}
you get the idea? Hope it helps
Nick
On Thu, May 9, 2013 at 3:15 PM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
Nick I want to move the object a simple pan with mouse.
On Thu, May 9, 2013 at 5:32 PM, Trajce Nikolov NICK
trajce.nikolov.n...@gmail.com wrote:
Hi Sujan,
what are you trying to do with your 'pan'? To move an object, or to move
the camera (view) ?
Nick
On Thu, May 9, 2013 at 1:03 PM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
I am trying to pan my model pls check the code snippet below.
viewer = composite view.
getTransform() will return a osg::PositionAttitudeTransform list.
But my object is moving in z direction as well inwards outwards. What am
I doing wrong please help. Thanks Sujan
void CSGraphicsView::pan( float dx, float dy )
{
osg::Vec3 transform =
viewer-getTransform()-getTrans().first()-getPosition();
transform += osg::Vec3(dx,dy,0.0f);
viewer-getTransform()-getTrans().first()-setPosition(transform);
}
--
Thanks Regards
Sujan
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Sujan
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Re: [osg-users] for PAN problem
thanks a lot Nick let me try this way. thanks
On Thu, May 9, 2013 at 7:18 PM, Trajce Nikolov NICK
trajce.nikolov.n...@gmail.com wrote:
Hi Sujan,
here is how I would do it:
//Let load the model:
osg::Node* model = osgDB:: readFile();
// Create MatrixTransform on top of it
osg::MatrixTransform* mxt = new osg::MatrixTransform;
// create the scene
mxt-addChild(model);
viewer-setSceneData(mxt);
Now, having it like this, by modifying the matrix in the MatrixTransofrm,
you can move the loaded object in the scene as you are doing with
onPan(double dx, double dy), and don;t touch the view matrix
something like:
void onPan(double dx, double dy)
{
osg::MatrixTransform* mxt =
dynamic_castosg::MatrixTransform*(viewer-getSceneData());
mxt-setMatrix(osg::Matrix::translate(1000+dx, 0, 0))
}
you get the idea? Hope it helps
Nick
On Thu, May 9, 2013 at 3:15 PM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
Nick I want to move the object a simple pan with mouse.
On Thu, May 9, 2013 at 5:32 PM, Trajce Nikolov NICK
trajce.nikolov.n...@gmail.com wrote:
Hi Sujan,
what are you trying to do with your 'pan'? To move an object, or to move
the camera (view) ?
Nick
On Thu, May 9, 2013 at 1:03 PM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
I am trying to pan my model pls check the code snippet below.
viewer = composite view.
getTransform() will return a osg::PositionAttitudeTransform list.
But my object is moving in z direction as well inwards outwards. What
am I doing wrong please help. Thanks Sujan
void CSGraphicsView::pan( float dx, float dy )
{
osg::Vec3 transform =
viewer-getTransform()-getTrans().first()-getPosition();
transform += osg::Vec3(dx,dy,0.0f);
viewer-getTransform()-getTrans().first()-setPosition(transform);
}
--
Thanks Regards
Sujan
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Thanks Regards
Sujan
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Thanks Regards
Sujan
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Re: [osg-users] OcclusionQueryNode and Depth Splitting
Yes Robert, but the main problem is that many times an occlusor will be in a different partition than the occluded object. And thats the main problem I think.. Objects in different distant partitions will be culled out by the current partition I can´t think of anything.. I thought about making an extra pass to calculate the occlusion query with a huge frustum, but the depth precision problem would not render distant objects properly... :/ Still need something clever on this... if there is anything possible.. Any possible trick you might think of? Thank for the reply Robert! Pablo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53979#53979 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OcclusionQueryNode and Depth Splitting
Hi Pablo, I can't think of way of having occluder set up in different depth range to the objects it's being occluded with jump through hoops with shaders that would unify the depth used in the test to the same range. This is really down to handle though, you are so off the map of what is normally done you are effectively out on your own. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Extrude Geometry
Hi Robert, Thank you very much, setting the geometry to dynamic was the key. Thanks, Braden -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53981#53981 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OcclusionQueryNode and Depth Splitting
Thanks, Agreed, I may have to implement something using CPU, like tests using occluder's shadow volume or something like that.. Anyway thanks again. []s Pablo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53982#53982 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgParticle::ExplosionEffect: assistance needed
I have been exploring osgParticle::ExplosionEffect for use with our software and have run into a few things I haven't yet been able to figure out. 1) We use the Qt resource system to compile and link into our executable some of the binary resources we need, including some images. I have used this system to store a .png file as a resource and have been trying to use that png file as the texture for the particle effects in an ExplosionEffect. When I invoke myExplosion-setTextureFileName(:explosiontexture), the texture appears not to have been loaded. When I invoke it with an actual path to the same file sitting on my hard drive, it works without problem. So, can anyone tell me if the Qt Resource system's naming convention for referring to internal binary resources is in some way usable with the setTextureFileName interface in ExplosionEffects? 2) The ExplosionEffect seems to be oriented with a z-up orientation. I am using OSGEarth and would like to have the explosions oriented at a local up axis, not a global z-up axis. I tried to add my explosions as a child of a MatrixTransform, but this seemed not to have the desired effect. Any tips or tricks on what my best options are? Thanks in advance for any help you may provide! -Mike -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53983#53983 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Dinamic Line Drawing
Hi,
This post was really helpful for me but I still couldn't add points on the fly
either. A few edits made it happen so I'm attaching my M_OSG_line_strip class.
To use the class I have the following in my CreateScene()
Code:
osg::Vec3Array* line_pts = new osg::Vec3Array;
line_pts-push_back(osg::Vec3(100, 0, 0));
line_pts-push_back(osg::Vec3(0, 100, 500));
line_pts-push_back(osg::Vec3(100, 100, 100));
lines_test = new
M_OSG_line_strip(osg::Matrix::rotate(osg::inDegrees(0.0f), 0.0f, 0.0f, 1.0f),
osg::Matrix::translate(0.0f, 0.0f, 0.0f),
osg::Matrix::rotate(osg::inDegrees(0.0f), 0.0f, 0.0f, 1.0f),
line_pts,
osg::Vec4(0.0f,1.0f,1.0f,1.0f)
);
tmp_root-addChild(lines_test-Get());
and to dynamically add a new line I have
Code:
void M_frame::OnTestBtnClick(wxCommandEvent WXUNUSED(event))
{
osg::Vec3f* new_pt = new osg::Vec3f(4000.0f, 2000.0f, 0.0f); // works
lines_test-Add_new_point(new_pt);
}
Seems to work great. Critique of the use of osg::ref_ptr is welcomed.
Thanks, Patrick
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Attachments:
http://forum.openscenegraph.org//files/m_osg_line_strip_887.h
http://forum.openscenegraph.org//files/m_osg_line_strip_762.cpp
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