DirBlur node — Natron 2.5.0 documentation

# DirBlur node

This documentation is for version 1.0 of DirBlur (net.sf.openfx.DirBlur).

## Description

Apply directional blur to an image.

This plugin concatenates transforms upstream.

## Inputs

Input | Description | Optional
--- | --- | ---
Source |  | No
Mask |  | Yes

## Controls

Parameter / script name | Type | Default | Function
--- | --- | --- | ---
Translate / `translate` | Double | x: 0 y: 0 | Translation along the x and y axes in pixels. Can also be adjusted by clicking and dragging the center handle in the Viewer.
Rotate / `rotate` | Double | 0 | Rotation angle in degrees around the Center. Can also be adjusted by clicking and dragging the rotation bar in the Viewer.
Scale / `scale` | Double | x: 1 y: 1 | Scale factor along the x and y axes. Can also be adjusted by clicking and dragging the outer circle or the diameter handles in the Viewer.
Uniform / `uniform` | Boolean | Off | Use the X scale for both directions
Skew X / `skewX` | Double | 0 | Skew along the x axis. Can also be adjusted by clicking and dragging the skew bar in the Viewer.
Skew Y / `skewY` | Double | 0 | Skew along the y axis.
Skew Order / `skewOrder` | Choice | XY | The order in which skew transforms are applied: X then Y, or Y then X. XY YX
Amount / `transformAmount` | Double | 1 | Amount of transform to apply. 0 means the transform is identity, 1 means to apply the full transform.
Center / `center` | Double | x: 0.5 y: 0.5 | Center of rotation and scale.
Reset Center / `resetCenter` | Button |  | Reset the position of the center to the center of the input region of definition
Interactive Update / `interactive` | Boolean | On | If checked, update the parameter values during interaction with the image viewer, else update the values when pen is released.
HiDPI / `hidpi` | Boolean | Off | Should be checked when the display area is High-DPI (a.k.a Retina). Draws OpenGL overlays twice larger.
Invert / `invert` | Boolean | Off | Invert the transform.
Filter / `filter` | Choice | Cubic | Filtering algorithm - some filters may produce values outside of the initial range (*) or modify the values even if there is no movement (+). Impulse (impulse): (nearest neighbor / box) Use original values. Box (box): Integrate the source image over the bounding box of the back-transformed pixel. Bilinear (bilinear): (tent / triangle) Bilinear interpolation between original values. Cubic (cubic): (cubic spline) Some smoothing. Keys (keys): (Catmull-Rom / Hermite spline) Some smoothing, plus minor sharpening (*). Simon (simon): Some smoothing, plus medium sharpening (*). Rifman (rifman): Some smoothing, plus significant sharpening (*). Mitchell (mitchell): Some smoothing, plus blurring to hide pixelation (*)(+). Parzen (parzen): (cubic B-spline) Greatest smoothing of all filters (+). Notch (notch): Flat smoothing (which tends to hide moire’ patterns) (+).
Clamp / `clamp` | Boolean | Off | Clamp filter output within the original range - useful to avoid negative values in mattes
Black outside / `black_outside` | Boolean | Off | Fill the area outside the source image with black
Motion Blur / `motionBlur` | Double | 1 | Quality of motion blur rendering. 0 disables motion blur, 1 is a good value. Increasing this slows down rendering.
Amount / `amount` | Double | 1 | Amount of blur transform to apply. A value of 1 means to apply the full transform range. A value of 0 means to apply no blur at all. Default is 1.
Centered / `centered` | Boolean | Off | When checked, apply directional blur symmetrically around the neutral position.
Fading / `fading` | Double | 0 | Controls the fading function. A value of 1 corresponds to linear fading. A value of 0 disables fading. Default is 0.
Invert Mask / `maskInvert` | Boolean | Off | When checked, the effect is fully applied where the mask is 0.
Mix / `mix` | Double | 1 | Mix factor between the original and the transformed image.