diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ruby2d/color.rb | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/lib/ruby2d/color.rb b/lib/ruby2d/color.rb index 2768086..f39b3c1 100644 --- a/lib/ruby2d/color.rb +++ b/lib/ruby2d/color.rb @@ -35,6 +35,8 @@ module Ruby2D when String if c == 'random' @r, @g, @b, @a = rand(0..1.0), rand(0..1.0), rand(0..1.0), 1.0 + elsif self.class.is_hex(c) + @r, @g, @b, @a = hex_to_f(c) else @r, @g, @b, @a = to_f(@@colors[c]) end @@ -43,10 +45,17 @@ module Ruby2D end end end - + + # test whether input string is Hex color + def self.is_hex(a) + result = !(/^#[0-9A-F]{6}$/i.match(a).nil?) + return result + end + # Color must be String, like 'red', or Array, like [1.0, 0, 0, 1.0] def self.is_valid?(c) (c.class == String && @@colors.key?(c)) || + (c.class == String && self.is_hex(c)) || (c.class == Array && c.length == 4 && c.all? { |el| el.is_a? Numeric } && c.all? { |el| el.class == Fixnum && (0..255).include?(el) || @@ -67,7 +76,8 @@ module Ruby2D end return b end - #convert from "#FFF000" to Float (0.0..1.0) + + # convert from "#FFF000" to Float (0.0..1.0) def hex_to_f(a) c=[] b=a.delete("#") @@ -76,8 +86,9 @@ module Ruby2D j=0 for i in (0..n-1).step(n/3) c[j]=Integer("0x".concat(b[i,n/3])) - j=j+1 + j=j+1 end + c[3] = 255 #set @a to 255 f = to_f(c) return f end |