auxilary.rb

# frozen_string_literal: true

module Mahjong
  module SVG
    Dim = Data.define(:width, :height, :unit) do
      def initialize(width:, height:, unit: "mm") = super(width: Float(width), height: Float(height), unit:)

      def shortest = deconstruct.min
      def longest  = deconstruct.max
    end

    Margin = Data.define(:top, :right, :bottom, :left) do
      def initialize(top:, right: nil, bottom: nil, left: nil)
        case [top, right, bottom, left]
        in Numeric, Numeric,  Numeric,  Numeric  then # nop
        in Numeric, Numeric,  Numeric,  NilClass then left                = right
        in Numeric, Numeric,  NilClass, NilClass then bottom, left        = top, right
        in Numeric, NilClass, NilClass, NilClass then bottom, left, right = top, top, top
        end

        super(top: Float(top), right: Float(right), bottom: Float(bottom), left: Float(left))
      end

      class << self
        def zero = (@zero ||= self[0.0, 0.0, 0.0, 0.0])
      end
    end

    Paper = F.pedantichash(
      "paper",
      a3:        Dim[297.0, 420.0],
      a4:        Dim[210.0, 297.0],
      a5:        Dim[148.5, 210.0],
      a6:        Dim[105.0, 148.5],
      a7:        Dim[74.25, 105.0],
      b3:        Dim[353.0, 500.0],
      b4:        Dim[250.0, 353.0],
      b5:        Dim[176.5, 250.0],
      b6:        Dim[125.0, 176.5],
      b7:        Dim[88.25, 125.0],
      large:     Dim[130.0, 210.0],
      passport:  Dim[88.0,  125.0],
      pocket:    Dim[90.0,  140.0],
      travelers: Dim[110.0, 210.0],
      us:        Dim[215.9, 279.4],
      xlarge:    Dim[190.0, 250.0],
    ).tap { def _1.default = self[:a4] }.freeze
  end
end