The Lighting Controller

I work with a band whose guitar player runs wireless and often likes to run around in the crowd in clubs. I got a crazy idea today to have a mover hanging from a light stand and use the Editor Pan/Tilt Joystick to follow the guitarist as he roams. Trouble is, in order to make the beam go approximately where the joystick shows like an overview of the venue, there would need to be a more complicated pan/tilt setup.

Essentially, centering the pointer in the Pan/Tilt grid would shine the beam straight down. That's easy. But instead of a square Pan/Tilt grid starting in the lower left at Zero and ending in the upper right at 255, it would actually have to be a circular "radial" grid where the center is 127 and the outer edge of the circle is 255 (or zero). By limiting the pan range to 360 degrees and lining up the 180-degree point (DMX value 127) to the front, the pan should pretty much line up with where you want it to aim horizontally, then moving along a radius at that pan from the center to outer edge should raise the tilt value and aim the fixture from straight down to farther out in the venue.

Thoughts anyone?

Untested, but if you edit that (not group) fixtures properties and limit its motion from lets say 520 degrees to 360 degrees, wouldn't that do the trick?

In X-axis pan, yes, but not with Y-axis tilt. The tilt control would have to be circular radial, not X/Y grid, where the parameter value goes from 127 at the center and either up to 255 or down to zero uniformly anywhere at the edge of the circle.