Press "," or "." to change the selected primitive.
Keep a key pressed to see it in orange.
Press "<" or ">" to chage its radius.
Position mouse and press mouse button to change its center.
Press 'n' or 'p' to print the nodesor primitives in the print-out window (not visible in browsers)
Built by Jarek Rossignac with Processing
Access and modify the source code as suggested in the header