The Great Dodecahedron is made up of 12 intersecting pentagons. ie. the pentagon faces of the Great Dodecahedron pass through each other. Press <M> to switch to manual rotation, then: <Right Arrow> <Left Arrow> to rotate about the Y axis. <Up Arrow> <Down Arrow> to rotate about the X axis. <a> and <z> keys to rotate about the Z axis. Try key combinations to rotate about several axes simultaneously. Press <M> again to return to automatic rotation. This is my first project to show lighting on a polyhedron. The lighting is from the front, left and top. So faces get darker with less light as they face away from the front, left and top of the screen.
My first project showing lighting on a polyhedron. Also see: https://scratch.mit.edu/projects/224164802/ https://scratch.mit.edu/projects/220949796/ 3D Tutorial Studio: https://scratch.mit.edu/studios/5040029/ http://dmccooey.com/polyhedra/GreatDodecahedron.html Huge thanks to @TheLogFather for his "Faster Triangle Filler" https://scratch.mit.edu/projects/24828481/ The Great Dodecahedron shares the same vertices and edges as an icosahedron. 3D Rotation theory from Wikipedia: https://en.wikipedia.org/wiki/Rotation_matrix