Hi Jason, here you have YPR from osg::Quat (look at the snippets)
http://forum.openscenegraph.org/viewtopic.php?t=548 As for the other way it is easy, you create the Matrix and get the rotate Quat, (return matrix.getRotate()), something like: osg::Matrixd Utils::createMatrix(double x, double y, double z, double h, double p, double r) { osg::Matrixd mxR; mxR.makeRotate(osg::DegreesToRadians(r),osg::Vec3(0,1,0)); osg::Matrixd mxP; mxP.makeRotate(osg::DegreesToRadians(p),osg::Vec3(1,0,0)); osg::Matrixd mxH; mxH.makeRotate(osg::DegreesToRadians(h),osg::Vec3(0,0,1)); osg::Matrixd mxT; mxT.makeTranslate(osg::Vec3(x,y,z)); return (mxP*mxH*mxT*mxR); } On Thu, Dec 18, 2014 at 12:03 AM, Jason Anderssen <janders...@exactal.com> wrote: > > Hi Chris, > > Thank you for you reply. > > I had a look at those, maybe I can get it to work with them, but I > really just want a simple 3 values for Yaw Pitch and Roll, from which I can > re-create the exactly same Quat or Matrix. I will also clarify, I don't > care about translation or scale etc, and the quaternion I am using is of > course only a rotation anyway. > > So basically I want the following type of code : > > getYPR(float &yaw, float &pitch, float &roll); > > Quaternion::fromYPR(yaw, pitch, roll); > > Cheers > Jason Anderssen > > From: Chris Hanson <xe...@alphapixel.com> > Reply-To: OpenSceneGraph Users <osg-users@lists.openscenegraph.org> > Date: Wed, 17 Dec 2014 15:47:57 -0700 > To: OpenSceneGraph Users <osg-users@lists.openscenegraph.org> > Subject: Re: [osg-users] Yaw pitch and roll or xyz conversion to and from > Quaternion > > Just wondering if in OSG there is anywhere I can extract either Yaw >> pitch and roll / or XYZ eular angles, too and from either a matrix or a >> quaternion? >> > > The > void > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a01593.html#a306a73ea16dfe10406725cefb3867dfa> > get > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00648.html#a341e0295def3df6e07a014a1ff8195b4> > (Matrixd > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00489.html> > &matrix) > const > > method lets you convert a Quat to a 4x4 Matrix. > > void > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a01593.html#a306a73ea16dfe10406725cefb3867dfa> > decompose > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00489.html#a3aad163d793a9d5af248e42fd2e94dea> > (osg::Vec3d > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00972.html> > &translation, osg::Quat > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00648.html> > &rotation, osg::Vec3d > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00972.html> > &scale > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00489.html#a9a9ad7cd3f007df5f559e10d471f1981> > , osg::Quat > <http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00648.html> > &so) > const decompose the matrix into translation, rotation, scale and scale > orientation. > > Will extract the trans, rot and scale components out of the matrix. > > Is that what you want? > > -- > Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com > http://www.alphapixel.com/ > Training * Consulting * Contracting > 3D * Scene Graphs (Open Scene Graph/OSG) * OpenGL 2 * OpenGL 3 * OpenGL 4 > * GLSL * OpenGL ES 1 * OpenGL ES 2 * OpenCL > Digital Imaging * GIS * GPS * osgEarth * Terrain * Telemetry * > Cryptography * Digital Audio * LIDAR * Kinect * Embedded * Mobile * > iPhone/iPad/iOS * Android > @alphapixel <https://twitter.com/alphapixel> facebook.com/alphapixel (775) > 623-PIXL [7495] > _______________________________________________ osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > Internet > Email Confidentiality Footer: This email and any files transmitted with it > contain privileged/confidential information intended for the addressee. > Neither the confidentiality of nor any privilege in the email is waived, > lost or destroyed by reason that it has been transmitted other than to the > addressee. If you are not the addressee indicated in this message (or > responsible for delivery of the message to such person), you may not copy > or deliver this message to anyone. In such case, you should destroy this > message, and notify us immediately. > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > -- trajce nikolov nick
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