Change Input.GetTouch(0).deltaPosition to object transform position in Unity 4.3 for 2D

Questions & Answers
1

Hi,
I am new in Unity 3d, I want to move ball on same direction when user tap on ball and move his finger. I got few hints to get user’s finger position from “Input.GetTouch(0).deltaPosition;” and get object’s position “transform.position” but “transform.position” give me position according to scene view and “Input.GetTouch(0).deltaPosition;” give position according to device screen. How can I convert “Input.GetTouch(0).deltaPosition;” to “transform.position” scene view wise or vice versa, so that it’ll be easy for me to move ball, because I am getting confuse with different position. Kindly help me on this and suggest me better approach to accomplish this task. Thanks in advance.

4

deltaPosition doesn’t contain your finger position, but position change between frames.

2

Try passing the position of your finger touch into Camera.ScreenToWorldPoint(). To get the position of your “mouse” on screen you can using Input.mousePosition. To get a touch event you can add an entry to the Input Manager for the mouse, and use Input.GetButton() to determine whether the button is being held down.

e.g.

if(Input.GetButton("Mouse"))
{
Vector 3 fingerPosition = Input.mousePosition;
Vector3 worldPosition = Camera.ScreenToWorldPoint(fingerPosition); 
transform.position = worldPosition;
}
3

You should use something like Camera.ScreenToWorldPoint:

http://docs.unity3d.com/Documentation/ScriptReference/Camera.ScreenToWorldPoint.html