a )rrrrabsrr rad2deg_acospglZ glPushMatrixZglLoadIdentityZ glRotatefrZ glGetFloatvZGL_MODELVIEW_MATRIXZ glPopMatrix) p1p2rrZtheta_multiplierv1v2dZraxisZrthetamatrrr get_spherical_rotatation1s r))ctypesr ImportErrorZ pyglet.glglr"mathrrrr!r rrrrr r)rrrr s