CompuServe Messages

If you are referring to the turbulence generated by the rotor blade, try using a fractal pattern on a cone shaped object with a transparencey falloff. Spin the object, and have it morph along the axis your prop is moving to help create the illusion of a stream of turbulent bubbles being pushed away. It might also help to add some velocity to your fractal pattern along the same axis. You can cheat the effects of cuastic refractions by applying an animated bump map to your water surface that consists or a moving gray scale pattern, and then ray trace your light through it. I generated my grayscale images by crumpling up several sheets of paper, scaning in the pattern, and then using a morph package to generate the transitions between the sheets. This sequence was than used as my bump map, and it worked quite well. Make your water surface blue and keep your light white for best effect. GT