14.17. Sinus

14.17. Sinus
	14. Rendering Filters

14.17.1. Overview

Figura 17.361. Applying example for the Sinus filter

Filter “Sinus” applied

You can find this filter from the image menu through Filters → Render → Pattern → Sinus….

The Sinus filter lets you make sinusoidally based textures, which look rather like watered silk or maybe plywood. This plug-in works by using two different colors that you can define in the Colors tab. These two colors then create wave patterns based on a sine function.

You can set the X and Y scales, which determine how stretched or packed the texture will be. You can also set the Complexity of the function: a high value creates more interference or repetition in the pattern. An example is shown below.

Results don't depend on the image you opened.

14.17.2. Options

Figura 17.362. “Sinus” filter options (Settings)

Presets, “Input Type”, Clipping, Blending Options, Preview, Split view

	Nota
	These options are described in Secção 2, “Common Features”.

X scale, Y scale

A low X/Y value will maximize the horizontal/vertical stretch of the texture, whereas a high value will compress it.

Complexity

This controls how the two colors interact with each other (the amount of interplay or repetition).

Random seed

This option controls the random behavior of the filter. If the same random seed in the same situation is used, the filter produces exactly the same results. A different random seed produces different results. Random seed can be entered manually or generated randomly by pressing the New Seed button.

Force tiling

If you check this, you'll get a pattern that can be used for tiling. For example, you can use it as a background in an HTML page, and the tile edges will be joined seamlessly.

Distorted

This options give additional control of the interaction between the two colors.

Color 1, Color 2

Here, you set the two colors that make up your texture. Default colors are yellow and blue.

Blend Mode

You can choose between three functions to set the shapes of the waves that are produced: Linear, Bilinear and Sinusoidal.

Exponent

The Exponent controls which of the two colors is dominant, and how dominant it is. If you set the exponent to -7.5, the left color will dominate totally, and if you set it to +7.5 it will be the other way around. A zero value is neutral.