Trillium was created out of the curiosity of what happens when a hexagon waterbomb is combined with a triangle waterbomb. The thing that happens is a cylindrical fold that would never lie on a plane as shown in the last image. So, then what operation might be needed to make it line on a plane? For that, the tip of the hexagonal waterbomb needs to be flattened until it reaches the level of the triangular Waterbomb thereby creating a hexagonal depression. This pushes the boundaries of regular Waterbomb tiling by combing two different polygons and making the necessary changes to the pattern to allow for that. In a way showing that not all angle bisectors and lines joining the midpoint of sides of a given polygon in order to behave like a Waterbomb tessellation.
