Hi guy, I'm attempting to do something very similar to the "marker tracking" that Paul Smith did a while ago. So far I've been able to track a red dot based on one of his tutorials
https://vimeo.com/20598209 As you can see the direction of the the particle have been randomized, so its always checking if is on red and this bit is working fine, but I'm not able to keep it "stable", menas at the perfect center What I was thinking to do is something like this: Check the lenght of 4 vectors ( X plus, Y plus, X minus, Y minus, so 4 vectors at 90° ) in order to keep the particle always at the center of the dot, since it will be something like the average of X Plus and X Minus, same thing for the Y So basically I want to check the vector lenght from the point 'till it reaches the red, do the same thing for the opposite vector, and set the average, so its stays in the center First of all, it is possible to "fire" 4 vectors in 4 different ( consistent ) directions? Any suggestions? Hope it makes sense :D Cheers

