class Curvature::Curve
Constants
- DefaultSampleAttributes
Attributes
chart[RW]
name[RW]
samples[RW]
Public Class Methods
new(params={})
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# File lib/curvature/curve.rb, line 9 def initialize(params={}) @samples = [] { }.merge(params).each { |k, v| send("#{k}=", v) } end
Public Instance Methods
<<(sample)
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# File lib/curvature/curve.rb, line 15 def <<(sample) @samples << sample end
print()
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# File lib/curvature/curve.rb, line 29 def print puts @name @samples.each do |sample| puts "\t%2s: %2.2f => %2.2f" % [sample.label, sample.input, sample.output] end puts end
to_html()
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# File lib/curvature/curve.rb, line 42 def to_html xml = Builder::XmlMarkup.new(indent: 2) # draw interpolated curve xml.g(fill: 'none', stroke: 'green', :'stroke-width' => 0.5) do points = @chart.x_range.step(1.0 / @chart.width).map do |input| @chart.scaled_point(input, value_for(input)) end xml.polyline(points: points.map { |pt| pt.join(',') }.join(' ')) end # draw individual samples @samples.each do |sample| cx, cy = @chart.scaled_point(sample.input, sample.output) attributes = DefaultSampleAttributes.merge( title: sample.label, cx: cx, cy: cy, r: 3, ).merge(sample.attributes || {}) xml.circle(attributes) end xml.target! end
value_for(input)
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# File lib/curvature/curve.rb, line 19 def value_for(input) unless @spliner @spliner = Spliner::Spliner.new( @samples.map(&:input), @samples.map(&:output), ) end @spliner[input] or raise "Can't find output for input #{input.inspect} on curve #{@name.inspect}" end