5.15. Waves

5.15. Waves
	5. 扭曲滤镜

5.15.1. Overview

图 17.92. Example for the Waves filter

Original image

Filter “Waves” applied with default options and period = 20.0

With this filter you get the same effect as a stone thrown in a quiet pond, giving concentric waves.

5.15.2. Activating the Filter

This filter is found in the main menu under Filters → Distorts → Waves….

5.15.3. Options

图 17.93. “Waves” filter options

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

	注意
	These options are described in 第 2 节 “Common Features”.

Center X, Center Y

Move the center of the waves

Amplitude

Varies the height of the waves.

Period

That is wavelength. Varies the distance between the top of waves.

The high default value suits large images. For images of some hundreds pixels wide and high, a lower value, such as 20 in our example, fits better.

Phase shift

This command shifts the top of the ripple.

Aspect ratio

Values less than 1.00 render waves oval, with major axis vertical. Values higher than 1.00 give a major axis horizontal.

Resampling method

These interpolation methods are described in 插值.

Clamp deformation

This limits the deformation in the image area. When this is disabled you seem to get transparent or black areas (depending on whether the layer has an alpha channel or not). When enabled, these areas will keep their normal color.