swift - ARKit – 光估计

Question

我收到有关 init() 无法用于 ARLightEstimate 的错误。

代码:

class LightSensorManager {

    let lightEstimate = ARLightEstimate()  // <-- error is here
    var ambientLightIntensity: CGFloat

    init() {
        ambientLightIntensity = lightEstimate.ambientIntensity
    }
}

错误:

/*   'init()' is unavailable    */

API to ARLightEstimation - ARKit

我认为它是一个抽象类？但我找不到它的具体子类。我只想使用此 API 中的环境光传感器来检测环境光。

Answer 1

Here's how you can use Light Estimation in ARKit – Full code version is HERE:

• 在 viewWillAppear(_:) 实例方法中启用光照估计:

   let configuration = ARWorldTrackingConfiguration()
   configuration.lightEstimationEnabled = true
  

• 在 renderer(_:updateAtTime:) SceneKit 实例方法中更新光照:

   func renderer(_ renderer: SCNSceneRenderer, 
          updateAtTime time: TimeInterval) {
  
       guard let lightEstimate = sceneView.session.currentFrame?.lightEstimate 
       else { return } 
       spotLightNode.light?.intensity = lightEstimate.ambientIntensity
   }