In a virtual room 100 particles are moving randomly. The room is presented from three different view points, which help to understand the particles’ movements .

Based on the rules explained below the algorithm generates a network of lines, points and spheres. This network reconstruct dynamically the borders of the space, suggesting the presence of limits without showing them explicitly.

When one particle reaches one of  the space’s borders, it is sent back to the inside. The point in which the interaction took place is marked by a circle, which grows and vanishes slowly. Next, a sphere will follow the particle which touched the border and disappear after a while.

The most saturated colors indicate the last interactions. As new particles reach the border the others loss a bit of saturation .

All the spheres are linked together through lines which follow the same order of the intersections.