ZenHAXhttps://zenhax.com/ [SOLVED]Convert 3x3 matrix radians to euler degreeshttps://zenhax.com/viewtopic.php?f=11&t=17461 Page 1 of 1

Author:  h3x3r [ Sun Sep 25, 2022 12:20 pm ]
Post subject:  [SOLVED]Convert 3x3 matrix radians to euler degrees

Helo there. Can somebody please mod/update the templete to convert 3x3 matrix radians to euler degrees or radians and output them as X,Y,Z ?
I have made a template for 010 Editor which parse data but i can't figure out code for converting matrices to euler.
Order should be ZYX.
Here's Template to mod. Thanks in advance!
Code:
`uint64 PHYSICS_MDL_TABLE_COUNT,NULL;struct{struct {    float m00, m01, m02, m03,          m10, m11, m12, m13,          m20, m21, m22, m23,          POS_X,POS_Y,POS_Z,VAL12;     uint FILE_ID0,FILE_ID1,FILE_ID0_TMP,FILE_ID1_TMP;          Printf("File ID = %u File ID1 = %u\n%f  %f  %f  %f\n%f  %f  %f  %f\n%f  %f  %f  %f\nPos X = %f\nPos Y = %f\nPos Z = %f\n\n",FILE_ID0,FILE_ID1,m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23,POS_X,POS_Y,POS_Z);          }POS_XYZ[PHYSICS_MDL_TABLE_COUNT]<optimize=false>;    }PHYSICS_MDL_POS_TABLE;`

BTW i used this online converter
Code:
`http://www.andre-gaschler.com/rotationconverter/`
which works, but i am not sure how precise it is. So i would like to see real values from a file.
EDiT: Here's some code in C++
Code:
`// Checks if a matrix is a valid rotation matrix.bool isRotationMatrix(Mat &R){    Mat Rt;    transpose(R, Rt);    Mat shouldBeIdentity = Rt * R;    Mat I = Mat::eye(3,3, shouldBeIdentity.type());    return  norm(I, shouldBeIdentity) < 1e-6;}// Calculates rotation matrix to euler angles// The result is the same as MATLAB except the order// of the euler angles ( x and z are swapped ).Vec3f rotationMatrixToEulerAngles(Mat &R){    assert(isRotationMatrix(R));    float sy = sqrt(R.at<double>(0,0) * R.at<double>(0,0) +  R.at<double>(1,0) * R.at<double>(1,0) );    bool singular = sy < 1e-6; // If    float x, y, z;    if (!singular)    {        x = atan2(R.at<double>(2,1) , R.at<double>(2,2));        y = atan2(-R.at<double>(2,0), sy);        z = atan2(R.at<double>(1,0), R.at<double>(0,0));    }    else    {        x = atan2(-R.at<double>(1,2), R.at<double>(1,1));        y = atan2(-R.at<double>(2,0), sy);        z = 0;    }    return Vec3f(x, y, z);}`

EDiT:
After some digging i finally found solution.
Used GNU Octave with this code:
Code:
`function convert_3x3mat2eulR = [-0.001869 -0.003010 -0.999994; -0.022299 0.999747 -0.002945; 0.999750 0.022276 -0.001943];[x,y,z] = decompose_rotation(R);digits(10);x0 = rad2deg(x);y0 = rad2deg(y);z0 = rad2deg(z); # code for converting radians to degreesRotX = vpa(x0), RotY = vpa(y0), RotZ = vpa(z0)   # final code for more output digitsendfunction [x,y,z] = decompose_rotation(R)x = atan2(R(3,2), R(3,3));y = atan2(-R(3,1), sqrt(R(3,2)*R(3,2) + R(3,3)*R(3,3)));z = atan2(R(2,1), R(1,1));end`