Module: Rubyvis::Scale

Included in:
Quantitative
Defined in:
lib/rubyvis/scale.rb

Defined Under Namespace

Classes: Linear, Log, Ordinal, Quantitative

Class Method Summary collapse

Class Method Details

.interpolator(start, _end) ⇒ Object 



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# File 'lib/rubyvis/scale.rb', line 18

def self.interpolator(start,_end)
  if start.is_a? Numeric
    return lambda {|t| t*(_end-start)+start}
  end
  start=Rubyvis.color(start).rgb()
  _end = Rubyvis.color(_end).rgb()
  return lambda {|t|
    a=start.a*(1-t)+_end.a*t
    a=0 if a<1e-5
    return (start.a == 0) ? Rubyvis.rgb(_end.r, _end.g, _end.b, a) : ((_end.a == 0) ? Rubyvis.rgb(start.r, start.g, start.b, a) : Rubyvis.rgb(
    (start.r * (1 - t) + _end.r * t).round,
    (start.g * (1 - t) + _end.g * t).round,
    (start.b * (1 - t) + _end.b * t).round, a))
  }
end

.linear(*args) ⇒ Object 



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# File 'lib/rubyvis/scale.rb', line 9

def self.linear(*args)
  Linear.new(*args)
end

.log(*args) ⇒ Object 



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# File 'lib/rubyvis/scale.rb', line 15

def self.log(*args)
  Log.new(*args)
end

.ordinal(*args) ⇒ Object 



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# File 'lib/rubyvis/scale.rb', line 12

def self.ordinal(*args)
  Ordinal.new(*args)
end

.quantitative(*args) ⇒ Object 



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# File 'lib/rubyvis/scale.rb', line 6

def self.quantitative(*args)
  Quantitative.new(*args)
end