Pattern node
~~~~~~~~~~~~

The **Pattern** node outputs a pattern texture generated from common waveform shapes.

.. image:: images/node_pattern_generic.png
	:align: center

Inputs
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The **Pattern** node does not accept any input.

Outputs
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The **Pattern** node provides a greyscale texture obtained by mixing a horizontal and
a vertical pattern.

Many different patterns can be created using this node, do not hesitate to experiment.

Parameters
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The Pattern node accepts the following parameters:

* the *X* and *Y* parameters define the pattern and their number of repetitions
  that will be propagated along the X and Y axes.
  The following patterns are available:

  * Sine: the value follows a sinus waveform

  * Triangle: the value follows a triangle waveform (changes linearly from 0 to 1 and from 1 to 0)

  * Square: the value follows a square waveform (stays constant at 0, then 1)

  * Sawtooth: the value follows a sawtooth waveform (changes linearly from 0 to 1, then jumps back to 0)

  * Constant: the value is 1

  * Bounce: the value follows a half-circle waveform

* the *Combiner* parameter is the function used to combine the *X* and *Y* patterns. The available
  functions are *multiply*, *add*, *max*, *min*, *xor* and *pow*

Example images
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.. image:: images/node_pattern_samples.png
	:align: center