The BCC Caustics ﬁlter can be used to simulate the effect of light
refracting through a surface of water and projected onto a surface (like
moving water ripple reﬂections on a pool bottom).
You can use this ﬁlter to create many types of effects where rays emanate from
a point and are reﬂected or refracted by a curved surface. For example, you
could use this ﬁlter to generate:
The built in PixelChooser, with integrated mocha planar tracking allows for
greater control over which areas of the image the ﬁlter should affect.