Hi Kneib > I would like to create a matrix in the c++ code to compute the rotation of > some vectors. > I tried to declare a Matrix3r but I didn't found any way to fill it with my > values. Is there a constructor for this class ? > After that, how can I do a matrix product with a Vector3r ?
constructors could be Matrix3r m; m = Matrix3r::Zero(); m = Matrix3r::Identity(); Matrix3r* m(new Matrix3r); (*m)<<m00,m01,m02,m10,m11,m12,m20,m21,m22; // from py/mathWrap/miniEigen.cpp // or simply Matrix3r m = Matrix3r::Zero(); m(0,0) = 1.0; m(1,2) = 2.34; ... By matrix product, do you mean Vector3r*Vector3r, or Matrix3r*Vector3r? Anyway (see http://eigen.tuxfamily.org/dox/TutorialMatrixArithmetic.html): Vector3r v1,v2; Matrix3r m = v1*v2.transpose(); Vector3r v3 = m*v1; Jan _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
