code: def draw_verts(self, use_cverts):
      def f():
          pgl.glBegin(pgl.GL_LINE_STRIP)
          for t in range(len(self.t_set)):
              p = self.verts[t]
              if p is None:
                  pgl.glEnd()
                  pgl.glBegin(pgl.GL_LINE_STRIP)
                  continue
              if use_cverts:
                  c = self.cverts[t]
                  if c is None:
                      c = (0, 0, 0)
                  pgl.glColor3f(*c)
              else:
                  pgl.glColor3f(*self.default_wireframe_color)
              pgl.glVertex3f(*p)
          pgl.glEnd()
  
      return f
  
file_path: sympy/sympy/plotting/pygletplot/plot_curve.py
imports: import pyglet.gl
  from sympy.core import S
  from sympy.plotting.pygletplot.plot_mode_base import PlotModeBase
label_desc: Use image node_id 4 for calling the PlotCurve obj's underlying member method code with example usage: obj.draw_verts(use_cverts) and returns: f