Heightfield Shader - Fractal Detail Tab - Revision history

Russe166 at 08:53, 26 August 2014

2014-08-26T08:53:23Z

2014-08-24T11:16:39Z

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 Fractal amount<br />
 [[File:fractalAmont.gif]]
+|
 Fractal flow factor<br />

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 Fractal amount<br />
 [[File:fractalAmont.gif]]
+|
 |}
 Back to: [[Heightfield Shader]]

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 '''Fractal roughness:''' This controls the amount of emphasis on smaller scale details. The default value of 1 produces fractal detail which is scale-invariant when considered as displacement. Larger values produce stronger small scale features (making the fractal appear rougher) while lower values produce lower amplitude small scale features (making the fractal appear smoother).
 </li><li>
-'''Fractal flow factor:''' The fractal detail pattern can be warped by the surface normal of the heightfield data, which may give the impression that it flows downhill or is the result of erosion in some cases (although it may look odd if there is too much warping). This parameter controls the strength of that warping.
+'''Fractal flow factor:''' The fractal detail pattern can be warped by the surface normal of the heightfield data, which may give the impression that it flows downhill or is the result of erosion when used carefully. If there is too much warping this may look unrealistic. This parameter controls the strength of that warping.
 </li>
 </ul>

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 '''Fractal roughness:''' This controls the amount of emphasis on smaller scale details. The default value of 1 produces fractal detail which is scale-invariant when considered as displacement. Larger values produce stronger small scale features (making the fractal appear rougher) while lower values produce lower amplitude small scale features (making the fractal appear smoother).
 </li><li>
-'''Fractal flow factor:''' The fractal detail pattern can be warped by the surface normal of the heightfield data, which may give the impression that it flows downhill or is the result of erosion in some cases. This parameter controls the strength of that warping.
+'''Fractal flow factor:''' The fractal detail pattern can be warped by the surface normal of the heightfield data, which may give the impression that it flows downhill or is the result of erosion in some cases (although it may look odd if there is too much warping). This parameter controls the strength of that warping.
 </li>
 </ul>

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 '''Fractal scale adjust:''' This controls the the scale and amplitude of the noise patterns used to add fractal detail. The scale is measure in heightfield data points.
 </li><li>
-'''Fractal variation:''' The fractal detail algorithm has an internal feedback loop that produces interesting formations that can appear to add variations in strength at small scales. This parameter controls the weight of this feedback loop, and therefore the apparent contrast of these variations.
+'''Fractal variation:''' The fractal detail algorithm has an internal feedback loop that produces interesting formations that can appear to add variations in strength at small scales. This parameter controls the weight of this feedback, and therefore the apparent contrast of these variations.
 </li><li>
 '''Fractal roughness:''' This controls the amount of emphasis on smaller scale details. The default value of 1 produces fractal detail which is scale-invariant when considered as displacement. Larger values produce stronger small scale features (making the fractal appear rougher) while lower values produce lower amplitude small scale features (making the fractal appear smoother).