Produces an SVG "mask" element.


   id STRING,
   x STRING,
   y STRING,
   width STRING,
   height STRING,
    node om.DomNode,
    name STRING )
  1. id is the SVG object identifier.
  2. x is the X coordinate of the mask.
  3. x is the Y coordinate of the mask.
  4. width is the width of the mask.
  5. height is the height of the mask.
  6. maskUnits defines the coordinate system for x,y,width,height.
  7. maskContentUnits defines the coordinate system for the content of the mask.


This function creates a "mask" SVG DOM element from the parameters.

To use a mask in an SVG DOM element, set the "mask" attribute with the string generate by the url() function.