Returns true if the x and y components of point is a point inside this rectangle. If allowInverse is present and true, the width and height of the Rect are allowed to take negative values (ie, the min value is greater than the max), and the test will still work.

	// prints inside when mouse is in lower left corner
	function Update () {
		var rect = Rect (0, 0, 150, 150);
		if (rect.Contains(Input.mousePosition))
			print("Inside");
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Update() {
        Rect rect = new Rect(0, 0, 150, 150);
        if (rect.Contains(Input.mousePosition))
            print("Inside");
        
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Update() as void:
		rect as Rect = Rect(0, 0, 150, 150)
		if rect.Contains(Input.mousePosition):
			print('Inside')