Version: 2017.3

Camera.WorldToViewportPoint

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public Vector3 WorldToViewportPoint (Vector3 position);

描述

position 从世界空间变换为视口空间。

视口空间是标准化的、相对于摄像机的空间。摄像机左下角为 (0,0),右上角为 (1,1)。z 位置为与摄像机的距离,采用世界单位。

// Finds out whether target is on the left or right side of the screen
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Transform target; Camera cam;

void Start() { cam = GetComponent<Camera>(); }

void Update() { Vector3 viewPos = cam.WorldToViewportPoint(target.position); if (viewPos.x > 0.5F) print("target is on the right side!"); else print("target is on the left side!"); } }