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Documentation

Outline

VFX Loom 1.0 reference for the Outline node.

Filters processing.outline
The Outline node on the VFX Loom graph canvas.
Fig. 1 The Outline node in its resting, collapsed state on the VFX Loom graph canvas.

Overview

Draws an alpha-aware outline around visible pixels.

Alpha-neighborhood outline with configurable position, color, opacity, and normalized thickness.

Category
Filters
Internal ID
processing.outline
Version
VFX Loom 1.0

Inputs

InputTypeRequiredDefaultMeaning
in Image Required — See the overview for the node's documented behavior.

Properties

PropertyTypeDefaultAnimatableRange / optionsEffect
Thickness Scalar .02 Yes Hard 0..0.25 Animatable control; changing it over time varies the node response.
Color Color (1,1,1,1) Yes — Animatable control; changing it over time varies the node response.
Opacity Scalar 1 Yes Hard 0..1 Animatable control; changing it over time varies the node response.
Position Enum Outside Not declared Outside · Inside · Both Selects the position behavior; each option changes the operation described in the overview.

Outputs

OutputTypeMeaning
out Image The production node output described by the overview.

Usage

In practice

  • Use Outline when the graph needs Draws an alpha-aware outline around visible pixels.
  • Alpha-neighborhood outline with configurable position, color, opacity, and normalized thickness.
  • Place it after the image or mask it should process, and check its alpha and edge behavior before using the result in a tiled graph.

Examples

These examples show Outline in supplied VFX Loom graph setups. Each graph link opens the corresponding node reference; the explanation below the media is specific to this node's role in that setup.

Shape / Warp / Glow with a moving wave branch

Two branches meet at Mask: a Shape branch is warped, outlined, and bloomed, while Time drives Motion → Mapping → Wave Texture → Transform to create a moving secondary field.

ShapeWarpOutlineGlow / BloomMask
TimeMotionMappingWave TextureTransformMask
VFX Loom graph showing Shape, Warp, Outline, Glow / Bloom, Time, Motion, Mapping, Wave Texture, Transform, and Mask connected around a white striped preview.
Fig. 2The two-branch mask setup in the graph canvas, shown at a single flipbook frame.
Fig. 3The same setup running: the Time-driven branch advances through the flipbook while the graph remains unchanged.

How Outline contributes

Outline extracts the visible edge of the warped form. This gives the upper branch a crisp contour that Glow / Bloom can expand.

Notes / limitations

  • No step is declared for Thickness or Opacity.
  • Shape Soft-edged SDF mask with Circle, Square, Ring, or Polygon.
  • Edge Detect Detects internal image gradients with Sobel, Prewitt, or Laplacian kernels.
  • Blur Gaussian-approximate blur, with tileable wrapping.