Parent Userdata Library graphics.* Revision 2017.3178 Keywords graphics, mask, image mask See also Masking Images (guide) graphics.newMask() object:setMask()
There is a nested masking limit of 3, so care must be taken when inserting masked objects into other masked objects which act as containers, including display.newContainer, widget.newScrollView, widget.newTableView, or a masked display group. Other display objects that utilize masks include display.newText, display.newEmbossedText, and any other masked display object. For example, a text object (one mask) inside a container (one mask) inside yet another container (one mask) would reach but not exceed the limit of 3 nested masks.