# frozen_string_literal: true class Region attr_accessor :x, :y, :width, :height def initialize(x, y, width, height) @x, @y, @width, @height = x, y, width, height end def self.from_edge_coordinates(left, top, right, bottom) return nil unless left && top && right && bottom return nil if right < left || bottom < top Region.new(left, top, right - left, bottom - top) end def to_edge_coordinates [left, top, right, bottom] end def to_top_left_corner_coordinates [x, y, width, height] end def top y end def bottom y + height end def left x end def right x + width end def size return 0 if width < 0 || height < 0 result = width * height result.zero? ? 1 : result end def to_a [@x, @y, @width, @height] end def find_intersect_with(region) return nil unless intersect?(region) new_left = [x, region.x].max new_top = [y, region.y].max Region.new(new_left, new_top, [right, region.right].min - new_left, [bottom, region.bottom].min - new_top) end def intersect?(region) left <= region.right && right >= region.left && top <= region.bottom && bottom >= region.top end def move_by(right_by, down_by) Region.new(x + right_by, y + down_by, width, height) end def find_relative_intersect(region) intersect = find_intersect_with(region) return nil unless intersect intersect.move_by(-x, -y) end def cover?(x, y) left <= x && x <= right && top <= y && y <= bottom end def empty? width.zero? || height.zero? end def blank? empty? end def present? !empty? end def inspect "Region(x: #{x}, y: #{y}, width: #{width}, height: #{height})" end # need to add this method to make it work with assert_equal def ==(other) case other when Region x == other.x && y == other.y && width == other.width && height == other.height when Array to_a == other else false end end end