live draw cairo 1

Hello I now have one additional question. Example: I want to move an Object (an rectangle) across the window. I dont want an finished Picture. It looks like cairo can only handle fully calculated graphics, which it then displays in one operation. Better Example: There are “cellular automata”; for example “Langton’s ant”. I want to watch “Langton’s ant” moving and I would like ... ranker who live a second time