Layer Automation Triggers

Creates an automated layer function based on layer ids and frame indices.

Syntax

getLayerVisibleAtTime = (id, ind) => {}

Parameters

id

A number describing the id of the layer to show/hide. The parameter itself is not based on the index of the layer in the layer array.

index

A number describing which frame is being checked.

Returns

A boolean indicating whether the layer of the specified id should be visible at the specified index.

Examples

Shows layer 1 after 1 second and toggles layer 2 every 5 frames.

getLayerVisibleAtTime = (id, ind) => {
  /** Boilerplate to convert layer id to index */
  if (!window.idToIndex) { 
    window.idToIndex = []

    const getSimulatorTrack = (state) => state.simulator.engine
    const getTrackLayers = (state) => getSimulatorTrack(state).engine.state.layers

    for (let [i, layer] of [
      ...getTrackLayers(window.store.getState()),
    ].entries()) {
      window.idToIndex[layer.id] = i
    }
  }
  
  id = window.idToIndex[id]
  /** End of boilerplate */

  if(id === 1) {
    return ind > 40
  }

  if(id === 2) {
    return ind % 10 < 5
  }

  return true;
}

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