5.8. Ripple
| 5. Filtres de distorsion |

### 5.8. Ripple

#### 5.8.1. Overview

Figure 17.66. « Ripple » filter example

Original image

Filter « Ripple » applied

It displaces the pixels of the active layer or selection to waves or ripples reminding a reflection on disturbed water.

#### 5.8.2. Activating the filter

You can find this filter through Filters → Distorts → Ripple….

#### 5.8.3. Options

Figure 17.67. « Ripple » filter options

Presets, Preview, Split view

  | Note
  These options are described in Section 2, « Options communes ».

Original images for examples
  Origin

  Ripple applied with default options

Amplitude

  It is related to wave height (0-200 pixels).

  Amplitude = 25

Period

  It is related to wavelength (0-200 pixels)

  Period = 110

Phase shift

  Wave is moved

  Phase shift = 0.400

Angle

  Warps wave

  Angle = -40°

Resampling methods

  These interpolation methods are described in Interpolation.

Wave type

  Choose how the wave should look like:

  - Sawtooth

  - Triangle

  - Sine

Abyss policy

  Because ripples cause pixel displacement, some pixels may be missing on the image sides:

  Abyss policy = Black

  Abyss policy (border management) is treated with Abyss policy.

Tileable

  This preserves the seamless properties if your image is a tile pattern.

Use the selection as input, Use the entire layer as input

  | Note
  These options are described in Section 2, « Options communes ».

5.7. Polar Coordinates |  | 5.9. Shift

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