Apple Motion 2 - Manual (Page 867)

Chapter 12 Using Shapes and Masks 867
4 Do one of the following:
• Open the Image Mask tab in the Inspector, then drag the object you want to use as
the mask into the Image well.
• Drag the object you want to use as the mask into the Mask Source well in the
Dashboard.
Important: Be sure to click and drag in one movement to successfully drop an object
in an image well. If you select the object to use as the source, and release the mouse
button, you lose the selection.
In this example, a text object is used as the mask object.
5 Choose the channel you want to use to create transparency from the Source Channel
pop-up menu, as well as any other options that are necessary to create the required
transparency.
Image Mask Parameters
Once you’ve added an image mask to an object, the following parameters become
available in the Image Mask tab of the Inspector.
01112.book Page 867 Sunday, March 13, 2005 10:36 PM