Detect the mouse swept direction and adding force to object.

Hello ,

I want to detect the mouse swept direction and addForce to that object along that direction when touch is released. See the SwipeExample on this demo : http://dl.dropboxusercontent.com/u/23073684/Blog/InputTouches/WebPlayer/WebPlayer.html

I am throwing a weapon when the touches have ended , The code is :

                         if(!weapon.rigidbody)
                         {        
                         
                             weapon.AddComponent("Rigidbody");
                             weapon.transform.parent = Scrap.transform;
                             weapon.rigidbody.constraints = RigidbodyConstraints.FreezeRotation;
                             weapon.rigidbody.constraints = RigidbodyConstraints.FreezePositionZ;
                             weapon.rigidbody.mass = 4;
                             weapon.rigidbody.AddRelativeForce(weaponForceDirection * 8000);
                             weapon.tag = "Weapon";
                             
                         }
                         
     in the weaponForceDirection Vector3 , I want to pass the direction .

I have declared weaponForceDirection and set its values as [0,0,-1]. in x,y,z.

A change in y value gives the required direction for me , like 0.1 to 0.4 gives angles [10 to 60] (as seen in protractor) and -0.1 to -0.4 gives angles in the [-10 to -60] .

So I want my y - direction to be changed depending on the swipe ranging from 0.1 to 0.4 upward and -0.1 to -0.4 downward.

Thanks in Advance.