I am quite new to ROOT. I want to add a tilt of 0.2 degrees about the y axis for a composite shape that acts as a mirror. The composite shape is of a TGeoSphere and TGeoBBox. Can I do this through TGeoRotation? If so, how would I do this since TGeoRotation is about Z, X and Z? Or is there any way I can use TGeoTranslation to perform the tilt?
Welcome to the ROOT Forum! I think @agheata can give you more details, but did you look at the TGeoRotation class reference?
root  TGeoRotation rot;
root  rot.RotateY(0.2);
root  rot.Print();
matrix - tr=0 rot=1 refl=0 scl=0 shr=0 reg=0 own=0
0.999994 0.000000 0.003491 Tx = 0.000000
0.000000 1.000000 0.000000 Ty = 0.000000
-0.003491 0.000000 0.999994 Tz = 0.000000
Thank you for reaching back. I am applying my rotation to the mirrors like this but I get an invalid pointer error.
TGeoRotation *rot1 = new TGeoRotation(); // in your case a dangling pointer
TGeoCombiTrans *combi = nullptr; // make sure it stays null if you don't catch the case
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