In high school I was very interested in 3D graphics and the math behind it. To feed this curiosity I created a Desmos graph which plotted points on a 2D graph that appeared in 3D, either orthographiclly or with perspective. You could then rotate the entire graph about the x and y axis. You can play with the rendering here: https://www.desmos.com/calculator/c6dfc03aefÂ