Nodes · Keying

BS_RoughenEdges

Keyingv1coreNeeds full inputForge

Overview

Breaks a matte's edge into an organic contour with fractal noise — torn, corroded or wind-wobbled instead of drawn. erode eats bites out of the edge; distort wobbles it without losing area. evolution animates it so it crawls rather than flickers, and the core stays solid.

How to

How-to

Wire the matte; pick mode: erode gnaws bites in, distort pushes the edge in and out.
width_in / width_out set the reach, noise_size the bite size, noise_detail the grit.
stretch pulls the noise along one axis; key evolution for a boil; preserve_core keeps the solid inside untouched.

Inputs

Input	What it takes
in	the image this node works on

Outputs

Output	Type
out	Image

Parameters

Parameter	Type	Default	What it does
mode	Choice	erode	`erode` eats the edge inward by a noise pattern (a matte that reads as gnawed); `distort` pushes the edge in and out along the noise (a matte that reads as torn). `erodedistort`
amount	Float	0.5	Strength of the effect. 1 = as designed; 0 = none.
width_in	Float	8.0	How far inside the edge the roughening reaches, pixels.
width_out	Float	8.0	How far outside the edge it may push, pixels (distort mode grows the data window by this).
noise_size	Float	24.0	The noise's feature size in pixels — small is a fine fray, large is bites.
noise_detail	Float	3.0	Octaves of noise: 1 is smooth bites, 4 adds fine texture to their edges.
stretch	Float2	[1.0, 1.0]	Stretch the noise along X and Y — 2,1 pulls the pattern horizontal, for grass or fur that lies a way.
evolution	Float	0.0	Animate the noise: the pattern changes with this value, so key it for an edge that boils.
seed	Float	0.0	The noise's seed — a different pattern with the same character.
preserve_core	Bool	true	Never eat into the matte's solid core, however wide the roughening: the effect stays at the edge.
disabled	Bool	false	Bypass: the node passes its first input through untouched (D in the graph). The knobs keep their values for when it comes back.
label	Text		A note shown under the node in the graph — what this node is FOR. Never affects the render or the cache.
hide_input	Bool	false	Draw the node without its input wire — a tidy graph for a node whose source is obvious (a Dot, a viewer tap).