The catacaustic of the quadrifolium with arbitrary radiant point is a complicated function. A few example are illustrated above.
Quadrifolium Catacaustic
See also
Catacaustic, QuadrifoliumExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Quadrifolium Catacaustic." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/QuadrifoliumCatacaustic.html