Re: [osg-users] Segmentation fault when I try to assign MatrixD
Thanks, that's great! But I have one more problem. How can I change distance of manipulator? I mean it is connected with node, but it's far away. I want to zoom in. And also I don't know how to turn off mouse controll... The osgGA::NodeTrackerManipulator inherits directly from osgGA::OrbitManipulator which has functionality that among other things can change the distance between the manipulator and the node it is tracking setDistance (double distance) I'm not sure what you mean by turn off the mouse control. Are you trying to lock the camera view to a particular view? I believe that you could lock it by setting the heading of the manipulator, but I personally haven't tried this. You might find something from what you have inherited in osgGA::OrbitManipulator or its parents. hope this helps. Scott Wasinger -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=45570#45570 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Segmentation fault when I try to assign MatrixD
On 15.02.2012 22:48, Scott Wasinger wrote:
Just for some clarification are you trying to make a camera that follows your
car model? Because I had the similar issue recently and through my research I
found I could attach a camera manipulator to a node and the camera will be
translated relative to the position of the PositionAttitudeTransform.
*Note I needed to attach the manipulator to a child of the
PositionAttitudeTransform. In your case it would be the Node that you loaded
the model file.
Code:
osg::ref_ptrosgGA::NodeTrackerManipulator manipulator = new
osgGA::NodeTrackerManipulator;
manipulator-setTrackerMode(osgGA::NodeTrackerManipulator::NODE_CENTER);
manipulator-setRotationMode(osgGA::NodeTrackerManipulator::TRACKBALL);
osg::ref_ptrosg::PositionAttitudeTransform vehicleRoot =
dynamic_castosg::PositionAttitudeTransform *(node);
if(vehicleRoot.valid())
{
manipulator-setTrackNode(vehicleRoot.getTrackerNode());
}
Hopefully this helps with your what your trying to accomplish
Scott[/code]
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Thanks, that's great! But I have one more problem. How can I change
distance of manipulator? I mean it is connected with node, but it's far
away. I want to zoom in. And also I don't know how to turn off mouse
controll...
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Maciej Ciemborowicz
http://ciemborowicz.pl
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[osg-users] Segmentation fault when I try to assign MatrixD
Hello, I have a class (Car) which extends|osg::PositionAttitudeTransform|. Now I want to create camera which has the same position. So I get car's matrix in Camera's getMatrix() method: |matrix= car-asMatrixTransform()-getMatrix(); // osg::Matrixd* matrix| At this point I get stack overflow. This is call stack from debugger: osg::Matrixd::set (this=0x64da90, ptr=0xd8) osg::Matrixd::Matrixd (this=0x64da90, mat=@0xd8: error reading variable) Camera::update (this=0x64d970) Camera::Camera (this=0x64d970, car=0x64b270) main (argc=1, argv=0x7fffe5d8) What am I doing wrong? How can I get matrix from PAT in different way? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Segmentation fault when I try to assign MatrixD
Maciej Ciemborowicz p...@ciemborowicz.pl writes: Hello, I have a class (Car) which extends|osg::PositionAttitudeTransform|. Now I want to create camera which has the same position. So I get car's matrix in Camera's getMatrix() method: |matrix= car-asMatrixTransform()-getMatrix(); // osg::Matrixd* matrix| At this point I get stack overflow. This is call stack from debugger: osg::Matrixd::set (this=0x64da90, ptr=0xd8) osg::Matrixd::Matrixd (this=0x64da90, mat=@0xd8: error reading variable) Camera::update (this=0x64d970) Camera::Camera (this=0x64d970, car=0x64b270) main (argc=1, argv=0x7fffe5d8) What am I doing wrong? How can I get matrix from PAT in different way? Does asMatrixTransform return a non-NULL pointer? PositionAttidudeTransform does not inherit from MatrixTransform so that should not work. HTH, Philipp Moeller GeometryFactory ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Segmentation fault when I try to assign MatrixD
Just for some clarification are you trying to make a camera that follows your
car model? Because I had the similar issue recently and through my research I
found I could attach a camera manipulator to a node and the camera will be
translated relative to the position of the PositionAttitudeTransform.
*Note I needed to attach the manipulator to a child of the
PositionAttitudeTransform. In your case it would be the Node that you loaded
the model file.
Code:
osg::ref_ptrosgGA::NodeTrackerManipulator manipulator = new
osgGA::NodeTrackerManipulator;
manipulator-setTrackerMode(osgGA::NodeTrackerManipulator::NODE_CENTER);
manipulator-setRotationMode(osgGA::NodeTrackerManipulator::TRACKBALL);
osg::ref_ptrosg::PositionAttitudeTransform vehicleRoot =
dynamic_castosg::PositionAttitudeTransform *(node);
if(vehicleRoot.valid())
{
manipulator-setTrackNode(vehicleRoot.getTrackerNode());
}
Hopefully this helps with your what your trying to accomplish
Scott[/code]
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http://forum.openscenegraph.org/viewtopic.php?p=45496#45496
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Re: [osg-users] Segmentation fault when I try to assign MatrixD
Hi guys, On 15/02/12 23:52 , Philipp Moeller wrote: I have a class (Car) which extends|osg::PositionAttitudeTransform|. Now I want to create camera which has the same position. So I get car's matrix in Camera's getMatrix() method: |matrix= car-asMatrixTransform()-getMatrix(); // osg::Matrixd* matrix| ... Does asMatrixTransform return a non-NULL pointer? PositionAttidudeTransform does not inherit from MatrixTransform so that should not work. Also, you may want to use 'osg::Matrix' rather than the explicit 'osg::Matrixd' just in case OSG is not compiled using doubles. Cheers, /ulrich ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
