Adobe After Effects - Manual (Page 521)

Direction
Velocity
Spin
Lifespan (sec)
Reflection
Profile
Color
Opacity
Fade-in Time
Fade-out Time
Start Width
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Specifies the initial direction of a wave if Velocity is greater than 0. By default, particles are emitted from the producer point in an
expanding radial pattern.
Specifies the speed at which the wave moves in the specified direction.
Controls the continued rotation of a shape after it is born.
Specifies the time, in seconds (including the fade-in and fade-out times), that the wave exists.
Tip: To prevent waves from abruptly disappearing when their lifetime ends, use the Fade Out Time control.
Specifies whether the waves bounce off the edges of the layer and back into the scene. This option is effective for generating
displacement maps for use as water ripples.
Stroke controls
Stroke controls specify the appearance of the stroke of a wave.
Controls the appearance of the stroke that defines the shape. The outline of the shape is animated in the wave that emanates from the
effect point. The quality of the stroke is defined as a 3D wave type.
Specifies the color of the stroke.
Specifies the maximum possible opacity of the stroke. The actual opacity of the stroke takes into account this setting in conjunction with
the Fade-in Time and Fade-out Time controls.
Specifies the amount of time it takes the wave to fade into view. Fade-in Time is measured in seconds and begins with 0 opacity at
birth. For example, if the Lifespan is 3 seconds and Fade-in Time is 1 second, the stroke is completely transparent at birth and fades smoothly to
full opacity at 1 second.
Specifies the amount of time it takes the wave to fade out of view. Fade-out Time is measured backward in time from the end of
the Lifespan. If the Lifespan is 3 seconds and Fade-out Time is 1 second, the wave begins to fade out at 2 seconds. If the sum of Fade-in Time
and Fade-out Time is greater than the Lifespan value, the intersection point of the two fades is calculated so that the wave doesn’t reach full
transparency. If either Fade-in Time or Fade-out Time is longer than the Lifespan, that amount is truncated to equal the Lifespan.
Specifies the width of the shape at its birth. End Width specifies the width of the shape at the end of its lifespan.
Ramp effect | CS6 and earlier
The Ramp effect creates a color gradient. You can create linear or radial ramps, and vary the position and colors of the ramp over time. Use the
Start Of Ramp and End Of Ramp properties to specify the start and end positions. Use the Ramp Scatter control to disperse the ramp colors and
eliminate banding.
This effect works with 8-bpc, 16-bpc, and 32-bpc color.
The Ramp effect in After Effects CC is called the Gradient Ramp effect .
Ramps often don’t broadcast well; severe banding occurs because the broadcast chrominance signal doesn’t contain sufficient resolution to
reproduce the ramp smoothly. The Ramp Scatter control dithers the ramp colors, eliminating the banding apparent to the human eye.
Stroke effect
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