Further still, in addition to animating objects within an image as illustrated by FIGS. 4D and 4E, any type of overlay can be animated. For example, while FIGS. 4B and 4C show a frame boundary animation, in some embodiments, any type of overlay can be used as a computer animation model. For example, a computer model for fireworks can be structured as a simple overlay, with areas for display of fireworks selected within a display area 410 of a display 402. The control points can either be considered fixed areas within a display area 410, or can be assigned independently to animations as they are presented within a display area 410. The display speed and motion of the animations can then be controlled for pseudorandom animation within the defined areas of the computer animation model for the fireworks as set by a designer of the particular model.
It will therefore be apparent that a designer of such animation can select control points in a wide variety of models in order to apply the pseudorandom animations described herein to generate a wide variety of types of video animations. As described above, such animations can be generated using a management interface (e.g. a computer animation model designer tool) or any such applications as part of generating models for use with pseudorandom animations in a messaging system or in any system as described herein.
