SUBJECT: COMPUTER GRAPHICS

I have made this code for drawing a house (it's front view, top view and side view). You can run this code and see what it looks like in the browser. I now need to include codes for 2D transformations on the front, top and side views respectively like TRANSLATING, ROTATING, SCALING AND SHEARING. Can you kindly provide me the code for these four since I am unable to get it myself. It would be greatly appreciated. Thanks!