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Gordon __________________________________________________________ Gordon Tomlinson Product Manager 3D Email : gtomlinson @ overwatch.textron.com __________________________________________________________ "Self defence is not a function of learning tricks but is a function of how quickly and intensely one can arouse one's instinct for survival" - Master Tambo Tetsura -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of GMD GammerMaxyandex.ru Sent: Wednesday, November 05, 2008 7:45 AM To: [email protected]; Robert Osfield Subject: Re: [osg-users] How should I reset position/rotation/scale usingMatrixTransform? Thanks Robert, PositionAttitudeTransform works as I nedded. But can I reset matrix transformation using MatrixTransform? Robert, answer please, is there any paied technical support of OSG which can helps me do some things with OSG or give advices about how can I realize some of my ideas better? If there is some thing like this could you give me they contacts. Thanks, Max. 05.11.08, 13:17, "Robert Osfield" <[EMAIL PROTECTED]>: > Hi ??? Please use the mailing list convention of signing with the name > you wish to be addressed with, Might I recommend you use > osg::PositionAttitudeTransform? This manages the potioning, scaling, > rotation and pivot point all as separate variables so there is no need > to try an decompose a Matrix into its part and recombine. > Robert. > On Wed, Nov 5, 2008 at 5:47 AM, GMD GammerMaxyandex.ru > <[EMAIL PROTECTED]> wrote: > > Hi. I have question about MatrixTransform. > > How should I reset position/rotation/scale using MatrixTransform? > > [code] > > { > > osg::Matrix mat; > > osg::Vec3d _Trans = MyMatrixTransform->getMatrix().getTrans(); > > osg::Quat _Rotate =MyMatrixTransform->getMatrix().getRotate(); > > osg::Vec3d _Scale = MyMatrixTransform->getMatrix().getScale(); > > MyMatrixTransform->setMatrix(osg::Matrix::scale(1.0f,1.0f,1.0f) * > > osg::Matrix::rotate(0.0f,0.0f,0.0f,1.0f)* > > osg::Matrix::translate(0.0f,0.0f,0.0f)); > > mat = osg::Matrix::scale(1.0f,1.0f,1.0f) * > > osg::Matrix::rotate(0.0f,0.0f,0.0f,1.0f) * > > osg::Matrix::translate(0.0f,0.0f,0.0f); > > if (!scale) mat.preMult (osg::Matrix::scale(_Scale)); if (!rotate) > > mat.preMult (osg::Matrix::rotate(_Rotate)); if (!position) > > mat.preMult (osg::Matrix::translate(_Trans)); > > MyMatrixTransform->setMatrix (mat); > > } > > [/code] > > > > After that rotation ( > > MyMatrixTransform->getMatrix().preMult(osg::Matrix::rotate(angle3,osg::Vec3d(0,0,1))); > > ) depends from scale (when scale is 10.0, rotation (angle3 = 0.2) visually > > works like angle3=0). > > > > How should I reset position/rotation/scale correctly? > > _______________________________________________ > > osg-users mailing list > > [email protected] > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegrap > > h.org > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph. > org -- Яндекс.Открытки. От всей души http://cards.yandex.ru/ _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
