class Magick::RVG::Image

def initialize(image, width=nil, height=nil, x=0, y=0)

Use the RVG::ImageConstructors#image method to create Text objects in a container.
+width+ and +height+.
Composite a raster image in the viewport defined by [x,y] and 
def initialize(image, width=nil, height=nil, x=0, y=0)
    super()             # run module initializers
    @image = image.copy # use a copy of the image in case app. re-uses the argument
    @x, @y, @width, @height = Magick::RVG.convert_to_float(x, y, width || @image.columns, height || @image.rows)
    if @width < 0 || @height < 0
        raise ArgumentError, "width, height must be >= 0"
    end
    init_viewbox()
end