ok, i am quite sure this is a totally stupid problem but i just can't get my head around this:
i have three float parameters (0.-1.) which should influence each other over time in the following way:
1. 0. 0. > 0. 1. 0. > 0. 0. 1. and reverse:
0. 0. 1. > 0. 1. 0. > 1. 0. 0.
they should ramp softly from 0. to 1. and back - for which i use "line". the sum of all three floats needs to be = 1. at any given point.
i attached a patch with my efforts, which is not working (red part).
background: i use a video fader with 3 inputs: image1, transition image, image2. image1 and image2 should fade into each other but always show the transition image in between. i use the fourway mixer of tutorial 43, which works perfectly fine - except i don't manage to give it the proper fading amount parameters.