Mobile Zoom System, That Zooms In On The Right Position

Questions & Answers
1

Hey everybody I have made two separate scripts one for pinch to zoom:

using UnityEngine;
using System.Collections;

public class PinchZoom : MonoBehaviour 
{
	public float OrthographicZoomSpeed = 0.0625F;
	public float ZoomReset = 1;
	public GameObject childCamera;

	void Update()
	{

		if (Input.touchCount >= 2) 
			{
				Touch TouchZero = Input.GetTouch (0);
				Touch TouchOne = Input.GetTouch (1);

				Vector2 TouchZeroPreviousPosition = TouchZero.position - TouchZero.deltaPosition;
				Vector2 TouchOnePreviousPosition = TouchOne.position - TouchOne.deltaPosition;

				float PreviousTouchDeltaMagnatude = (TouchZeroPreviousPosition - TouchOnePreviousPosition).magnitude;
				float TouchDeltaMagnatude = (TouchZero.position - TouchOne.position).magnitude;

				float DeltaMagnitudeDifference = PreviousTouchDeltaMagnatude - TouchDeltaMagnatude;

				childCamera.camera.orthographicSize += DeltaMagnitudeDifference * (OrthographicZoomSpeed * childCamera.camera.orthographicSize);

				if (childCamera.camera.orthographicSize <= 3.0F) 
					{
						childCamera.camera.orthographicSize = 3.0F;
					}
				if (childCamera.camera.orthographicSize >= 13.0F) 
					{
						childCamera.camera.orthographicSize = 13.0F;
					}
			} 
		else if (childCamera.camera.orthographicSize <= 4.0F)
			{
				childCamera.camera.orthographicSize = Mathf.Lerp(childCamera.camera.orthographicSize , 4.0F, Time.deltaTime/ZoomReset);
			}
	}
}

and a panning script:

using UnityEngine;
using System.Collections;

public class CameraMovement : MonoBehaviour 
{
	public float speed = 0.1F;
	public GameObject childCameraObject;

	void Update()
	{
		if (Input.touchCount >= 1 && Input.GetTouch(0).phase == TouchPhase.Moved) 
		{
			Touch TouchZero = Input.GetTouch (0);
			Vector2 touchDeltaPosition = TouchZero.deltaPosition;
			childCameraObject.transform.Translate(-touchDeltaPosition.x * speed * Time.deltaTime,-touchDeltaPosition.y * speed * Time.deltaTime, 0);		
		}
	}
}

and they work very well together although there is one problem that I have no idea how to fix no matter how much research I do, the problem is that no matter where the pinches into on the screen it always zooms into the centre of the screen know matter what. I know that is because I am using orthographic zoom, but because the camera in my scene is orthographic changing its local z position(the camera is isometric x=30,y=45,z=0 rotation)does not do anything? I am basically asking how would you pull this off? and could you please provide the basic code because I am new to c#

2

Zoom In Effect for Orthographic Camera using iTween.

void Update () 
{

	if (Input.GetMouseButtonDown (0))
	{

// camera will move with orthogaphic cam size
// orthographic camera size  
//from = current orthographic camsize
//to = end of zoom in point
iTween.ValueTo (gameObject,iTween.Hash("from",5.35f,"to",2.9f,"time",10f,"onupdate","camzoom")); 
// camera poistion move
iTween.ValueTo (gameObject,iTween.Hash("from",gameObject.transform.position,"to",new Vector3(-3.569774f,-1.567216f,gameObject.transform.position.z),"time",10f,"onupdate","newpos"));

	}

}

void newpos(Vector3 pos)
{
	gameObject.transform.position = pos;
}
void camzoom(float val)
{
	Camera.main.orthographicSize = val;
}