kotlin-cesium-engine/cesium.engine/PostProcessStageLibrary/createEdgeDetectionStage

createEdgeDetectionStage

fun createEdgeDetectionStage(): PostProcessStage(source)

Creates a post-process stage that detects edges.

Writes the color to the output texture with alpha set to 1.0 when it is on an edge.

This stage has the following uniforms: color and length

  • color is the color of the highlighted edge. The default is Color.BLACK.

  • length is the length of the edges in pixels. The default is 0.5.

This stage is not supported in 2D.

// multiple silhouette effects
const yellowEdge = PostProcessStageLibrary.createEdgeDetectionStage();
yellowEdge.uniforms.color = Color.YELLOW;
yellowEdge.selected = [feature0];

const greenEdge = PostProcessStageLibrary.createEdgeDetectionStage();
greenEdge.uniforms.color = Color.LIME;
greenEdge.selected = [feature1];

// draw edges around feature0 and feature1
postProcessStages.add(PostProcessStageLibrary.createSilhouetteStage([yellowEdge, greenEdge]);
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Return

A post-process stage that applies an edge detection effect.

See also