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com.asurafanclub.frustumculling's Introduction

FrustumCulling

视锥体剔除和基于视口空间高度的 LOD 组件，可以为自定义的渲染器或者使用动效的物体配置相机可见性。样例场景在 Test\Scenes 文件夹下。

推荐的做法

  1. 在相机上挂载 CameraCullingGroup，为项目约定一组 LOD 层级（按倒序排列的视口空间高度）并为 CameraCullingGroup 写入固定值。
  2. 为需要检查可见性的物体上挂载 CullingGroupVolume，需要为 CullingGroupVolume 更新正确的本地包围盒。
  3. 播放时才会检查可见性，CullingGroupVolume 会回传事件，在业务代码里监听它们。

CullingGroupVolume 发出的事件

  • UnityEvent<Camera> onBecameVisible
    • 指示物体变为可见，传递参与剔除的相机
  • UnityEvent<Camera> onBecameInvisible
    • 指示物体变为不可见，传递参与剔除的相机
  • UnityEvent<Camera, IReadOnlyList<float>, int> lodChanged
    • 指示 LOD 发生变化，传递参与剔除的相机、对应的 LOD 列表和 LOD 层级
  • UnityEvent onVolumeDisabled
    • 指示剔除组自身被禁用

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