Hi,
Here's my problem.
I have affected a nodetrackmanipulator to a viewer and a callback to the camera.
I want is to compel my camera inside a sphere.
So, in the callback method operator() I get the nodetrackmanipulator,
get the position matrix mat from it using getMatrix().
Then I compute the lenght of the position the camera (this is done in the
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) method) :
[code]
osg::Matrixd mat = _nodeTrackerManipulator->getMatrix();
double length = mat.getTrans().length();
if (length > sphereRadius)
{
osg::Matrixd newMat;
newMat.identity();
newMat.setRotate( m.getRotate() );
newMat.setTrans( 0, 0, 0);
_nodeTrackerManipulator.setByMatrix( newMat );
}
[/code]
The problem is that the display result is wrong. The camera is not at position
(0,0,0).
I have also try using setByInverseMatrix but nothing.
What should it done to update the position, rotation nodeTrackerManipulator
(matrixManipulator) ?
Thank you.
[/code]
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http://forum.openscenegraph.org/viewtopic.php?p=17769#17769
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