Version: 2017.2

Camera.ScreenToViewportPoint

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public Vector3 ScreenToViewportPoint (Vector3 position);

Description

Преобразует position (позицию) из экранного пространства в пространство окна просмотра.

Screenspace is defined in pixels. The bottom-left of the screen is (0,0); the right-top is (pixelWidth,pixelHeight). The z position is in world units from the camera.

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.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Update() { transform.position = Camera.main.ScreenToViewportPoint(Input.mousePosition); } }