RR with an absorbing pixel

In this page we observe the effects of adding an "absorbing pixel" in the rotor router.

An absobing pixel is a pixel where the rotor router algorithm stops the current iteration and start a new chip at center.

This is a kind of hole from which the chip of the current iteration can't escape.

1. With this UDLR router example, an absorbing pixel is added in centerx+300 location.

What we observe is that around the absorbing point, a moiré pattern similar to the one in the center appears.

2. This picture is made using the URDL rotor router with addition of 4 absorbing pixels at centerx(+/-250) and centery(+/-250)

we also observe that around the absorbing point the pattern of the center appears.

3. In this last picture I setup the UDLR rotor router center on the left and I add a single absorbing pixel on the right. I put reflective walls (in blue) for the rotor chips. You may notice how similar the patterns on the emitting and absorbing side are. You may also see how field lines are bended and attracting each other.