Question

JavaScript => WorldToViewportPoint(position: Vector3): Vector3;
C# => Vector3 WorldToViewportPoint(Vector3 position);

Description 描述

Transforms position from world space into viewport space.

从世界空间到视窗空间的变换位置。

Viewport space is normalized and relative to the camera. The bottom-left of the camera is (0,0); the top-right is (1,1). The z position is in world units from the camera.

视窗空间是归一化的并相对于相机的。相机的左下为（0,0）；右上是（1,1），Z的位置是以世界单位衡量的到相机的距离。

JavaScript:

	// Finds out whether target is on the left or right side of the screen
	var target : Transform;
 
	function Update () {
		var viewPos : Vector3 = camera.WorldToViewportPoint (target.position);
		// viewport coordinates range from zero to one
		if( viewPos.x > 0.5 )
			print ("target is on the right side!");
		else
			print ("target is on the left side!");
	}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    public Transform target;
    void Update() {
        Vector3 viewPos = camera.WorldToViewportPoint(target.position);
        if (viewPos.x > 0.5F)
            print("target is on the right side!");
        else
            print("target is on the left side!");
    }
}

Camera