swift - ARKit - 光估计

Question

我收到关于 init() 的错误消息不适用于 ARLightEstimate .
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
我假设它是一个抽象类？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

更新照明 renderer(_:updateAtTime:) SceneKit 的实例方法:

 func renderer(_ renderer: SCNSceneRenderer, 
        updateAtTime time: TimeInterval) {

     guard let lightEstimate = sceneView.session.currentFrame?.lightEstimate 
     else { return } 
     spotLightNode.light?.intensity = lightEstimate.ambientIntensity
 }