code: def init_rot_matrix(self):
      pgl.glPushMatrix()
      pgl.glLoadIdentity()
      self._rot = get_model_matrix()
      pgl.glPopMatrix()
  
file_path: sympy/sympy/plotting/pygletplot/plot_camera.py
imports: import pyglet.gl
  from sympy.plotting.pygletplot.plot_rotation import get_spherical_rotatation
  from sympy.plotting.pygletplot.util import get_model_matrix, model_to_screen, screen_to_model, vec_subs
label_desc: Use image node_id 2 for calling the PlotCamera obj's underlying member method code with example usage: obj.init_rot_matrix() without return types