Two shapes start to grow, trying to reach each other.

And when they are close enough, they start growing on different paths.

These rules create a pattern where they grow apart and towards each other.

<Pseudo Code>

* Populate points in the volume of the pavilion.

* Take two random points from the cloud.

*Take the points inside the loop.

* Create two cases for the movement of the points:

     a.) If the distance between two points is more than 2;

          * for each point create a vector towards the other point.

          * move the points according to vectors.

          * choose the closest member of the cloud for new points.

          * take new point for next iteration.

     b.) If the distance between two points is less than 2;

          * move the point to the closest member of the point cloud.

          * take new point for next iteration.

          * Create polyline for both point list.

          * Create mesh pipe from the lines.

          * Use Perlin noise algorithm to change the constant width of the mesh pipe.