cesium-mcp

Instructions

Implementation Reference

• packages/cesium-mcp-bridge/src/commands/interaction.ts:29-49 (handler)

  The `highlight` function implements the logic to highlight entities in a Cesium viewer. It takes the viewer, layer manager, and highlighting parameters. It iterates over entities in a layer and applies a highlight color to them based on their type (polygon, polyline, or point).

  export function highlight(
    viewer: Cesium.Viewer,
    layerManager: LayerManager,
    params: HighlightParams,
  ): void {
    const { layerId, featureIndex, color = '#FFFF00' } = params
    const refs = layerManager.getCesiumRefs(layerId)
    if (!refs?.dataSource) return
  
    const entities = refs.dataSource.entities.values
    const highlightColor = parseColor(color).withAlpha(0.8)
  
    if (featureIndex != null && featureIndex < entities.length) {
      const entity = entities[featureIndex]!
      applyHighlight(entity, highlightColor)
    } else {
      for (const entity of entities) {
        applyHighlight(entity, highlightColor)
      }
    }
  }

• packages/cesium-mcp-bridge/src/types.ts:248-252 (schema)

  The `HighlightParams` interface defines the input parameters for the highlight tool: `layerId` (string), `featureIndex` (optional number), and `color` (optional ColorInput).

  export interface HighlightParams {
    layerId: string
    featureIndex?: number
    color?: ColorInput
  }