The colourful rabbits (numbering approximately 30) in the screenshot are rendered in real-time and rotated and moved (transformed). Each rabbit is actually each made up of 66,848 triangles. Just click the (WebGL- Flying bunnies) link on the right-hand side to load the 335 lines C++ source program then hit the compile button. After it has compiled in a second or so hit the Reboot/Run button on the right-hand side to start it running.
You can select all the source code and copy/paste it into a text editor if you want to examine it. You even can save out the compiled wasm (WebAssembly) file if you really want to though as it’s binary, it probably won’t mean too much unless you have a viewer.