# File ../lib/fox/core.rb, line 73
    def -(other)

      if other.kind_of?(FXPoint)

        FXPoint.new(self.x - other.x, self.y - other.y)

      elsif other.kind_of?(FXSize)

        FXPoint.new(self.x - other.w, self.y - other.h)

      else

        raise TypeError, 'expected FXPoint or FXSize'

      end

    end