A Scratch recreation of an old BBC Basic demo. I changed the colours... because I could (!) If you want to see the original, paste this link into your browser bar... https://bbcmic.ro/#%7B%22v%22%3A1%2C%22program%22%3A%220MODE1%3AVDU5%3AVDU29%2C640%3B512%3B%3AC%25%3D1%3AFORI%25%3D0TO900%20STEP%2012%5Cn1A%3DI%25%2F200%3AX%25%3DI%25*SIN%28A%29%3AY%25%3DI%25*COS%28A%29%3AMOVEX%25%2CY%25%3ADRAW-Y%25%2CX%25%3ADRAW-X%25%2C-Y%25%3ADRAWY%25%2C-X%25%3ADRAWX%25%2CY%25%3AGCOL0%2CC%25%3AC%25%3D%28C%25%2B1%29MOD3%2B1%3ANEXT%5Cn2F%25%3D3%3AREPEAT%5Cn3FORJ%25%3D1TO3%3AVDU19%2CJ%25%2C%28J%25%2BC%25%29MOD3%2BF%25%3B0%3B%3ANEXT%5Cn4C%25%3D%28C%25%2B1%29MOD3%2B1%3ADELAY%3DINKEY%2810%29%5Cn5UNTIL%20FALSE%22%7D
