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Camera.WorldToViewportPoint

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public function WorldToViewportPoint(position: Vector3): Vector3;
public Vector3 WorldToViewportPoint(Vector3 position);

Description

Transforms position from world space into viewport space.

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.

#pragma strict
// Finds out whether target is on the left or right side of the screen
public var target: Transform;
var cam: Camera;
function Start() {
	cam = GetComponent.<Camera>();
}
function Update() {
	var viewPos: Vector3 = cam.WorldToViewportPoint(target.position);
	if (viewPos.x > 0.5F)
		print("target is on the right side!");
	else
		print("target is on the left side!");
}
// 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!"); } }