1. A method of intersecting a first digital image and a second digital image, the method comprising: mixing the first digital image and the second digital image to produce a first composite image in which the first digital image is layered on top of the second digital image; mixing the first digital image and the second digital image to produce a second composite image in which the second digital image is layered on top of the first digital image; mixing the first composite image and the second composite image using a wipe pattern to produce a target digital image comprising the intersection of the first digital image and the second digital image; wherein the wipe pattern is a function of a difference in depth between the first digital image and the second digital image.