3.7. Linear Motion Blur

3.7.1. Overview

图 17.22. The Linear Motion Blur filter

The Linear Motion Blur filter

Original

The Linear Motion Blur filter

Blur applied


This filter creates a linear blur in a direction determined by the Angle option. The default direction is horizontal to the right (0.000 degree).

3.7.2. Options

图 17.23. Linear Motion Blur filter options

Linear Motion Blur filter options

Presets, Preview, Split view

These options are common to GEGL-based filters. Please refer to 第 2 节 “Common Features”.

Length

In this case, Length represents the blur intensity. More Length will result in more blurring.

Angle

Angle describes the direction of the movement. Thus, a setting of 90 will produce a vertical blur, and a setting of 0 will produce a horizontal blur.

Use selection as input

Explained in 第 3.4 节 “Pixelize”.

On-canvas controls

This option (default) allows you to modify blur settings directly on canvas, for easier visual tweaking of blur settings. It displays a line with handle on both ends to vary direction and transform.

Press Ctrl key to change direction by 15° steps.