Transition: Iris Diamond

The "Iris Diamond" transition uses a growing diamond-shape to reveal clip B.

This transition has many variations.

Drag the little circle in clip A to the point from where you want the diamond to start growing.
Make the border width greater than zero to draw a border around the diamond.
- You can choose the color of the border. The default is black.
Place a check in the "Reverse" checkbox to have the diamond shrink to reveal clip B.
You can specify the amount of anti-aliasing used to soften the edges of the diamond. The default is "off".