Determining the next (Web hosting compare) highest available depth To determine
Determining the next highest available depth To determine the next highest available depth within a movie clip, use MovieClip.getNextHighestDepth(). The integer value returned by this method indicates the next available depth that will render in front of all other objects in the movie clip. The following code creates a new movie clip, with a depth value of 10, on the Timeline of the movie clip named menus_mc. It then determines the next highest available depth in that same movie clip, and creates a new movie clip at that depth. menus_mc.attachMovie(”menuClip”,”file_menu”, 10); var nextDepth = menus_mc.getNextHighestDepth(); menus_mc.attachMovie(”menuClip”, “edit_menu”, nextDepth); In this case, the variable named nextDepth contains the value 11, because that s the next highest available depth for the movie clip menus_mc. To obtain the current highest occupied depth, subtract 1 from the value returned by getNextHighestDepth(), as shown in the next section (see Determining the instance at a particular depth on page 130). Determining the instance at a particular depth To determine the instance at particular depth, use MovieClip.getInstanceAtDepth(). This method returns a reference to the instance at the specified depth. The following code combines getNextHighestDepth() and getInstanceAtDepth() to determine the movie clip at the (current) highest occupied depth on the root Timeline. var highestOccupiedDepth = _root.getNextHighestDepth() - 1; var instanceAtHighestDepth = _root.getInstanceAtDepth(highestOccupiedDepth); For more information, see MovieClip.getInstanceAtDepth() on page 503. Determining the depth of an instance To determine the depth of a movie clip instance, use MovieClip.getDepth(). The following code iterates over all the movie clips on a SWF file s main Timeline and displays each clip s instance name and depth value in the Output panel. for(each in _root) { var obj = _root[each]; if(obj instanceof MovieClip) { var objDepth = obj.getDepth(); trace(obj._name + “:” + objDepth) } } For more information, see MovieClip.getDepth() on page 503. Swapping movie clip depths To swap the depths of two movie clips on the same Timeline, use MovieClip.swapDepths(). For more information, see MovieClip.swapDepths() on page 535. 130 Chapter 7: Working with Movie Clips
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