Thanks! I took your code and modified a bit to remind me of what I had saved years ago. Not quite right but closer. https://codepen.io/tessaracting/pen/yyaMawL

Thanks! I took your code and modified a bit to remind me of what I had saved years ago. Not quite right but closer. https://codepen.io/tessaracting/pen/yyaMawL https://codepen.io/tessaracting/pen/yyaMawL Careful around complex numbers! BTW poetically enough, codepen has a tesseract for a logo.