Rotating the 3D-body about its own axis

Hi

Problem description: I do not want that rotates the whole picture. I import a cylindrical STL file and plotte the whole thing with the function trisurf. This body I do not want to rotate as a whole image or chart but the body rotate about its own axis at a certain angle. And all I want to then control via slider (with Matlab-GUI) that I give an angle in the text box and the component rotates about its axis at the desired angle.

Thank you in advance for your help.

Regards Ekrem