The strange thing with this is that the matrixtransfrom I get from casting to
MatrixTransform* is
Matrix {
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1
}
not.
Matrix {
1 0 0 0
0 1 0 0
0 0 1 0
30 0 0 1
}
as I would have expected. I'm using the current OSG_OP_OT-1.0.
Do I have to accumulate all parental MatrixTransforms to get the Matrix I'd
expect from looking at the .osg file?
- servus, Tim -
> -----Ursprüngliche Nachricht-----
> Von: osg users <[email protected]>
> Gesendet: 02.06.06 09:14:37
> An: "osg users" <[email protected]>
> Betreff: Re: [osg-users] Changing the Position of an Object in the Scene
> Hi Tim,
>
> From the intersection traversal you should get a Hit with the NodePath
> on it, just walk through this NodePath from back to front testing for
> Node* which can be dynamically cast to MatrixTransform and then just
> multiple its matrix by a translation matrix i.e.
>
> matrixtransform = dynamic_cast<MatrixTransform*>(node);
> if (matrixtransform)
> {
> matrixtransform->setMatrix(osg::Martix::translate(x,y,z)*
> matrixtransform->getMatrix());
> }
>
> On 6/1/06, tim hartter <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > I'd like to change the Position of an Object in my Scene after picking
> > it by mouse picking.
> > I already have a ref_ptr, call it m_Node, pointing to the Object I want
> > to move, but I don't know how to apply the changes correctly. I don't
> > want to insert another MatrixTransform, I'd like to modify the original
> > one to translate the Object to the new position.
> >
> > In my .osg File it looks something like this:
> >
> > MatrixTransform {
> > DataVariance STATIC
> > name "Moon"
> > ...
> > Matrix {
> > 1 0 0 0
> > 0 1 0 0
> > 0 0 1 0
> > 30 0 0 1
> > }
> > num_children 1
> > Geode {......}
> > }
> >
> > and I want to apply the changes so that I have
> >
> > ...
> > Matrix {
> > 1 0 0 0
> > 0 1 0 0
> > 0 0 1 0
> > 30+x 0+y 0+z 1
> > }
> > ...
> >
> > in the .osg File after saving it back. Vec3(x,y,z) is th amount by which
> > I'd like to move the object.
> > Thanks for any help
> >
> > - Tim -
> > _______________________________________________
> > osg-users mailing list
> > [email protected]
> > http://openscenegraph.net/mailman/listinfo/osg-users
> > http://www.openscenegraph.org/
> >
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