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DrummerHead/map_processing.rb

Created June 8, 2013 05:13
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Ruby implementation of Processing's map function
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map_processing.rb
# Ruby implementation of Processing's map function
# http://processing.org/reference/map_.html
def map(value, v_min, v_max, d_min, d_max) # v for value, d for desired
v_value = value.to_f # so it returns float
v_range = v_max - v_min
d_range = d_max - d_min
d_value = (v_value - v_min) * d_range / v_range + d_min
end
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