Dominik Rau wrote:
> Hi.
>
> In my application, I use mostly ComponentTransforms, as they are better
> suited for my purpose and "easier" to hande (in my particular case).
> However, from time to time, I also use the setMatrix() method.
> Unfortunately, setting the matrix directly on a ComponentTransform
> leaves the translate, rotate etc. fields of the ComponentTransform
> untouched -> they are wrong afterwards.
>
> I added this small piece of code to the ComponentTransform (of OpenSG
> 2.0, but 1.x had the same problem AFAIR) changed method to overcome this:
>
> void ComponentTransform::changed(ConstFieldMaskArg whichField,
> UInt32 origin,
> BitVector details)
> {
> if((whichField & CenterFieldMask ) ||
> (whichField & RotationFieldMask ) ||
> (whichField & ScaleFieldMask ) ||
> (whichField & ScaleOrientationFieldMask) ||
> (whichField & TranslationFieldMask ) )
> {
> editMatrix().setTransform(getTranslation (),
> getRotation (),
> getScale (),
> getScaleOrientation(),
> getCenter ());
> }
> else if(whichField & MatrixFieldMask)
> {
> OSG::Vec3f translation;
> OSG::Quaternion rotation;
> OSG::Vec3f scale;
> OSG::Quaternion scaleOrientation;
> OSG::Vec3f center;
>
> getMatrix().getTransform(translation, rotation, scale,
> scaleOrientation, center);
> _sfTranslation.setValue(translation);
> _sfRotation.setValue(rotation);
> _sfScale.setValue(scale);
> _sfScaleOrientation.setValue(scaleOrientation);
> _sfCenter.setValue(center);
> }
>
> Inherited::changed(whichField, origin, details);
> }
>
> If this is the right way to do it (my mostly single threaded app shows
> the right values with it), could please anybody add it to the
> repository? Ot otherwise, if this is not correct, fix it accordingly?
Looks good to me, if the getTransform() is working ok. (IIRC it did have
some problems, but maybe that was fixed)
Also, how about logging a warning the changes conflict (i.e if both if's
are true). One shouldn't do that, so it might help with debugging if one
gets notified.
Cheers,
/Marcus
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