OpenLIME

Class: ShaderEdgeDetection

ShaderEdgeDetection

ShaderEdgeDetection extends the base Shader class to implement a Sobel edge detection filter on input textures.

The shader detects edges by calculating gradients in both horizontal and vertical directions using Sobel operators.

new ShaderEdgeDetection( [options])

Creates a new EdgeDetectionShader instance.

Parameters:
Name Type Argument Description
options Object <optional>

Configuration options passed to parent Shader

Properties
Name Type Argument Default Description
threshold number <optional>
 0.1

Edge detection threshold (0.0-1.0)
colorEdges boolean <optional>
 false

Whether to preserve edge colors
Source:

Methods

fragShaderSrc(gl)

Override fragment shader source to implement edge detection. This version is compatible with both WebGL 1.0 and 2.0+.

Parameters:
Name Type Description
gl WebGLRenderingContext

WebGL context
Source:
Returns:

Fragment shader source code

Type
string

setColorEdges(enabled)

Toggles colored edges mode.

Parameters:
Name Type Description
enabled boolean

Whether to preserve edge colors
Source:

setThreshold(value)

Sets the edge detection threshold.

Parameters:
Name Type Description
value number

Threshold value (0.0-1.0)
Source: