Just finished a simple helper plugin (tag) that automagically handles recalculating the texture mapping coordinates for light objects. It’s nothing earth-shattering, but quite handy whenever you feel like projecting a texture from a spotlight for instance. Normally you have to manually fiddle around with the mapping coordinates a lot to make sure the entire texture is properly projected without any annoying tiling or mirroring. And if you get the crazy idea to change the light parameters, you’ll have to tweak the mapping again… With this tag however, you just “set it and forget it”.
The tag handles the most common light types (with a few exceptions as outlined in the documentation included with the download) and takes spot radius, aspect ratio and other parameters into account when calculating the final projection.
Auto Gel Projection is freeware for all conceivable purposes (except for kinky stuff involving minors), and works with Cinema 9.5 or higher, on Mac and Windows.
Get it >>> HERE <<< - and enjoy (docs and a simple example scene included).
Or click HERE to get a stripped version that will run on Cinema 4D R 9.1.