def convert_cml2png(formula, output):
space = SpaceMock()
batch = pyglet.graphics.Batch()
img = Molecule(formula, space, batch, pos=(32,32), render_only=True)
w, h, _ = img.cml.max_pos()
width = int(w*64) + 64
height = int(h*64) + 64
config = gl.Config(double_buffer=True)
window = pyglet.window.Window(width=width,height=height,visible=True,config=config)
window.minimize()
gl.glClearColor(250/256.0, 250/256.0, 250/256.0, 0)
gl.glLineWidth(4)
gl.glHint(gl.GL_LINE_SMOOTH_HINT, gl.GL_NICEST)
img.update()
@window.event
def on_draw():
window.clear()
batch.draw()
pyglet.image.get_buffer_manager().get_color_buffer().save(output)
window.close()
pyglet.app.exit()
pyglet.app.run()
