a) PROVIDE the OpenGL (LWJGL) animation code that makes a pendulum swing. Consider the method drawPendulum() already exists, so you do not need to define the object vertices and develop the draw method. To do so, provide the code for the UpdateScene() method and the correct transformation call in renderScene() method. Initialize the control variables in InitScene() method. The images below show illustrations of the pendulum, presenting the initial and final positions so that you can define the variables (angles between -30 and 30) to control the animation (rotation). The animation must stop after 3 full cycles (-30 to 30) with the final angle set to 0. (25 marks) 30 Frameo Angle 30 60 30 90 0 120 -30 Figure 1. Example of a Pendulum animation