Module: GeoPattern::PatternHelpers

Defined in:
lib/geo_pattern/pattern/pattern_helpers.rb

Class Method Summary collapse

Class Method Details

.hex_val(hash, index, length) ⇒ Object 



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# File 'lib/geo_pattern/pattern/pattern_helpers.rb', line 5

def self.hex_val(hash, index, length)
  hash[index, length || 1].to_i(16)
end

.map(value, v_min, v_max, d_min, d_max) ⇒ Object

Ruby implementation of Processing’s map function processing.org/reference/map_.html



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# File 'lib/geo_pattern/pattern/pattern_helpers.rb', line 11

def self.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
  (v_value - v_min) * d_range / v_range + d_min
end