Transfering local hit coordinate to a variable script?

I came across a very useful shader effect, but fully implementing it appears to require a script that would alter Material.SetVector() and Material.SetFloat().

Is there a script that would record the collision vector and force of an object hitting a mesh which could be used to set the variables in the shader below?

http://forums.revora.net/topic/87068-3d-localized-shield-flare-shader-star-trek-like-shields/

It's a bit frustrating to find a shader that does exactly what I need but lacks a key component to implement it in a scene.

 

OnCollisionEnter method could be used to detect point of hit - http://docs.unity3d.com/ScriptReference/Collider.OnCollisionEnter.html and it's Collision argiment could be used to get relativeVelocity value - that can be used to detect vector of hit (I'm not sure, but hope it's true) http://docs.unity3d.com/ScriptReference/Collision-relativeVelocity.html

 

As Patico has stated.

To answer alter Material.SetVector() and Material.SetFloat() : http://docs.unity3d.com/ScriptReference/Material.SetVector.html

As the shader requires a Vector4 in local space, use Transform.InverseTransformPoint to convert a world position to a local position. Then construct a temporary Vector4. Something like this :

Code (csharp):

1. Vector3 localPoint = transform.InverseTransformPoint( point );
2. Vector4 lp = new Vector4( localPoint.x, localPoint.y, localPoint.z, 0 );
3. renderer.material.SetVector( "_Position", lp );

 

Thanks for the comments. This is what I have so far, and it's giving an error that 'point' does not exist in the current context. Which I assume has something to do with declaring variables?

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class ExampleClass : MonoBehaviour {
6.     public Transform Shield_Frigate;
7.     void OnCollisionEnter(Collision collision) {
8.         Vector3 localPoint = transform.InverseTransformPoint( point );
9.         Vector4 lp = new Vector4( localPoint.x, localPoint.y, localPoint.z, 0 );
10.         renderer.material.SetVector( "_Position", lp );
11.     }
12. }