Sorry for my english, I'm french! :)
I try to make a modelisation of pedestrian dynamics.
There's someone, (a dot in Maple) at some randomn place in a square.
He want to go to another place.
So, there's 3 dot in Maple:
- S: The start fixed
- X: Mr X who is traveling from S to E
- E: The end fixed
so, without any rule, X is drawing a line from S to E.