RealityKit – 如何编辑或添加照明?

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问题描述

我正在尝试在我的 RealityKit AR 场景中添加照明.而且我在 Reality Composer 中找不到照明选项.如果有办法添加 Directional Light 或编辑它，请告诉我.我已经尝试过 Apple 文档，但无法理解如何添加它们.

I'm trying to add lighting in my RealityKit AR Scene. And I can't find the Lighting option in Reality Composer. If there's a way to add Directional Light or edit it then please tell me. I've tried Apple Documentation but can't understand how to add them.

推荐答案

目前在 Reality Composer 中无法做到，需要使用 RealityKit.因此，您需要创建一个继承自Entity 类并符合HasPointLight 协议的自定义类.在 macOS 项目中运行此代码以了解 PointLight 设置的工作原理:

At the moment you can't do it in Reality Composer, you need to use a RealityKit. So, you need to create a custom class that inherits from Entity class and conforms to HasPointLight protocol. Run this code in macOS project to find out how a PointLight setup works:

import AppKit
import RealityKit

class Lighting: Entity, HasPointLight {

    required init() {
        super.init()

        self.light = PointLightComponent(color: .red,
                                     intensity: 100000,
                             attenuationRadius: 20)
    }
}

class GameViewController: NSViewController {

    @IBOutlet var arView: ARView!

    override func awakeFromNib() {

        arView.environment.background = .color(.black)

        let pointLight = Lighting().light
        let boxAnchor = try! Experience.loadBox()

        boxAnchor.components.set(pointLight)
        arView.scene.anchors.append(boxAnchor)

        boxAnchor.steelBox!.scale = [9,9,9]
        boxAnchor.steelBox!.position.z = -0.5
    }
}

以同样的方式向场景添加定向光.但请记住:定向光的位置并不重要，但方向很重要！默认情况下，它面向北 (-Z).

class Lighting: Entity, HasDirectionalLight {

    required init() {
        super.init()

        self.light = DirectionalLightComponent(color: .red,
                                           intensity: 100000,
                                    isRealWorldProxy: true)
    }
}

也可以阅读我的故事关于灯光中.

Also can read my STORY about lights on Medium.

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