Module: Sass::Script::Functions

#frontrend_ca function拡張するならこのあたり？ Module: Sass::Script::Functions

# File '/var/www/sass-pages/.sass/lib/sass/script/functions.rb', line 969 def mix(color1, color2, weight = Number.new(50)) assert_type color1, :Color assert_type color2, :Color assert_type weight, :Number Sass::Util.check_range("Weight", 0..100, weight, '%') # This algorithm factors in both the user-provided weight (w) and the # difference between the alpha values of the two colors (a) to decide how # to perform the weighted average of the two RGB values. # # It works by first normalizing both parameters to be within [-1, 1], # where 1 indicates "only use color1", -1 indicates "only use color2", and # all values in between indicated a proportionately weighted average. # # Once we have the normalized variables w and a, we apply the formula # (w + a)/(1 + w*a) to get the combined weight (in [-1, 1]) of color1. # This formula has two especially nice properties: # # * When eit...

Full article: http://sass-lang.com/docs/yardoc/Sass/Script/Functions.ht...