    # File lib/RMagick.rb, line 62
        def initialize(width=nil, height=nil, x=nil, y=nil, flag=nil)
            raise(ArgumentError, "width set to #{width.to_s}") if width.is_a? GeometryValue
            raise(ArgumentError, "height set to #{height.to_s}") if height.is_a? GeometryValue
            raise(ArgumentError, "x set to #{x.to_s}") if x.is_a? GeometryValue
            raise(ArgumentError, "y set to #{y.to_s}") if y.is_a? GeometryValue

            # Support floating-point width and height arguments so Geometry
            # objects can be used to specify Image#density= arguments.
            if width == nil
                @width = 0
            elsif width.to_f >= 0.0
                @width = width.to_f
            else
                Kernel.raise ArgumentError, "width must be >= 0: #{width}"
            end
            if height == nil
                @height = 0
            elsif height.to_f >= 0.0
                @height = height.to_f
            else
                Kernel.raise ArgumentError, "height must be >= 0: #{height}"
            end

            @x    = x.to_i
            @y    = y.to_i
            @flag = flag

        end