Touch.position

説明

The position of the touch in screen space pixel coordinates.

Position returns the current position of a touch contact as it's dragged. If you need the original position of the touch see Touch.rawPosition.

The bottom-left of the screen or window is at (0, 0). The top-right of the screen or window is at (Screen.width, Screen.height).

// This script outputs the position of an active touch contact

// Attach this script to a GameObject
// Create a Text GameObject (GameObject>UI>Text)
// Attach the Text to the Text field in the Inspector window of your GameObject

using UnityEngine;
using UnityEngine.UI;

public class TouchPositionExample : MonoBehaviour
{
    public Text m_Text;

    void Update()
    {
        if (Input.touchCount > 0)
        {
            Touch touch = Input.GetTouch(0);

            // Update the Text on the screen depending on current position of the touch each frame
            m_Text.text = "Touch Position : " + touch.position;
        }
        else
        {
            m_Text.text = "No touch contacts";
        }
    }
}