Evolution controls for the Roughen Edges effect

You can adjust the following Evolution controls:

Evolution

Creates subtle changes in the shape of the roughness. Animating this setting results in smooth changes or "evolution" of the roughness over time. Set keyframes for Evolution to determine how much the roughness will "evolve" over the period of time between keyframes. The more revolutions in a given amount of time, the more rapidly the roughness changes. Higher Evolution values may result in less smooth changes in the roughness.

Note: Although the Evolution value is set in units called "revolutions," it is important to realize that these revolutions are progressive. The Evolution state continues to progress infinitely at each new value. Use the Cycle Evolution option (explained below) to return the Evolution setting to its original state at each revolution.

Evolution Options

Evolution Options provide controls that render the effect for one short cycle and then loop it for the duration of your project. Use these controls to prerender your roughen elements into loops, and thus speed up rendering time.Use the following controls to create a smooth, progressive, nonrepeating loop:

• Cycle Evolution creates a loop that forces the evolution state to return to its starting point.
• Cycle is available only when you select Cycle Evolution. It specifies the number of revolutions (of the Evolution setting) that the fractal noise cycles through before it repeats. For example, if you set the evolution to occur over five revolutions and you set the Cycle value to 2, then the evolution loops twice. The timing or speed of these Evolution cycles is determined by the amount of time allowed between Evolution keyframes.

Note: The Cycle control affects only the state of the fractal, not geometrics or other controls. For example, two identical states of the fractal will not appear the same if viewed with different Size or Offset settings.

• Random Seed specifies a unique random value from which to generate the roughness texture. Animating this property results in flashing from one set of fractal shapes to another within the same fractal type. For smooth transition of the roughness, use the Evolution control.

Note: Create new roughness animations by re-using previously created Evolution cycles and changing only the Random Seed value. Typing a new Random Seed value alters the noise pattern without disturbing the evolution animation.