I'm fairly new to Shake but can anyone tell me if it has a type of 'channel math node' I want to use the following equation, ((r1-r2)2+(g1-g2)2+(b1-b2)2) assuming it uses this syntax.
Any help would be very welcome.
The LayerX node is what you're looking for.Or you could use an ISubA followed by a Brightness of 2.
Alan.