On Sat, Mar 21, 2015 at 3:41 AM, Ben Coman <[email protected]> wrote:
> Do we need to do something for Pharo 4? And what is the simplest/quickest > thing that would work - even if it needs revisiting in Pharo 5? The most simple that works is to at least set alpha to any value. - Multiplication - alpha doesn't change - Division - alpha doesn't change - Addition - (color1 apha + color2 alpha) min: 1.0 - simple addition and check to not allow alpha to overcome max value - Subtraction - if two colors are the same alpha becomes 0, otherwise we take alpha of message receiver (minuend) Slice is in inbox (15188) Cheers, Alex
