Category: Texture Generators
Shader Family: Texture
Output: Scalar
Simulates ripples on the surface of a fluid based on a coordinate input. To understand how the parameters work, keep in mind
that a ripple is composed of two waves: the envelope and the wavelet. The envelope is a "hump" shape under which the wave
"lives." The wave exists only where the envelope is non-0 and its amplitude is the same as the value of the envelope at that
point. The wave travels inside the envelope. Thus, the overall effect is of waves being created at the inner envelope boundary,
growing in amplitude as they travel outward to the envelope center, and finally decaying as they approach the outer boundary.
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The shader's name. Enter any name you like, or leave the default.
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Defines the U, V, and Z coordinates of the texture.
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Controls the current time of the ripple. At 0, the ripple has not formed yet; at 0.1, however, the ripple begins forming while
taking into consideration the Amplitude and the Spread Start.
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Defines the frequency of the wave within the envelope. A high value results in many waves; a low value has the opposite effect.
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Defines the amplitude of the ripple's envelope at 0 time.
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Controls how quickly a wave spreads from one boundary to another.
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Controls the decay of the ripple amplitude in relation to time. A high value increases the liquid's viscosity (e.g., syrup)
and causes the waves to decay quickly. A low value prolongs the waves' decay and simulate a less viscous liquid (e.g., water).
For no decay, leave this parameter at 0.
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Defines the speed of the center of the envelope. In a physical situation, this value is always lower than the Phase Velocity.
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Controls the speed of the wave that "lives" under the envelope. In a physical situation, this value is always greater than
Group Velocity.
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Defines the spread of the envelope at the moment the wave is formed (after 0). The spread is the distance between the two
boundaries of the envelope.
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Defines the X, Y, and Z point of origin of the ripple.
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Render Tree Usage
Use this shader to drive a parameter with a texture effect anywhere in a render tree. This shader generates a texture that
can be used as a color, a Weight value in a mixer shader, or to drive any Surface shader parameter.
Connect a Texture Space Controller shader to drive the Coordinate value of this shader.
Except where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
