Sha256: ae322d2bcfad23da114ed31bdf622047361d87bd2ceffa1e219f112c4a56a4e0
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Size: 757 Bytes
Versions: 6
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Stored size: 757 Bytes
Contents
class RailsDataExplorer
module Utils
class ColorScale
def initialize
@points = {
-1 => Color::RGB::Red,
-0.1 => Color::RGB::Black,
0.1 => Color::RGB::Black,
1 => Color::RGB::Green,
}
@gradient = Interpolate::Points.new(@points)
@gradient.blend_with {|color, other, balance|
other.mix_with(color, balance * 100.0)
}
end
def compute(input)
@gradient.at(input).html
end
def demo
"<ul>".html_safe +
(-1).step(1, 0.1).map { |e|
color = compute(e)
%(<li style="color: #{ color }">#{ e } (#{ color })</li>)
}.join.html_safe +
"</ul>".html_safe
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems