material-maker/material_maker/doc/node_pattern_scratches.rst

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2019-11-18 08:47:31 +01:00
Scratches node
~~~~~~~~~~~~~~
The **Scratches** node outputs a fibers pattern, that can be used for
scratches on any material or messy fibers.
It is inspired from a the *Fuzzy scratches* shadertoy from
Daedalus (https://www.shadertoy.com/view/4syXRD).
.. image:: images/node_scratches.png
Inputs
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The **Scratches** node does not accept any input.
Outputs
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The **Scratches** node generates a single greyscale output texture.
Parameters
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The **Scratches** node accepts the following parameters:
* the *Length* parameter defines the length of a fiber in the output texture. The number of
scratches grows exponentially with the inverse of this length.
* the *Width* parameter defines the width of each fiber.
* *Layers* is the number of layers of the effect. The number of scratches grows
linearly with the number of layers.
* *Waviness* can be tweaked to draw straight or curved scratches.
* *Angle* is the average angle of the scratches.
* *Randomness* is applied to the scratches angles.
Example images
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.. image:: images/node_scratches_samples.png
:align: center