Change material on Ui image through code

Hi there,

Im sure this is really simple but I cant get it to work and its driving me mad.

I have a blur shader that I want to adjust the blur amount through code using a lerp of some description. Either just lerp the float value or do a material lerp. The blur shader does work with unity UI.

Problem is I can't figure out how to do it on a UI image. I want to adjust blur amount on a UI image over a set amount of time.

Alternatively I would like to be able to adjust the blur amount through unitys animation system but I cant get that to key frame at all.

Any ideas on how I can do this?

 

bump?

 

1. does the blur work on the ui Image?

If yes:
2. if you have the element (UI Image), assign a material (copy for a local blur or use a single material if the blur is shared)
then simply update the float by using the setFloat of the material

 

Thanks freezy.

How would I go about lerping the float value of the material though? That's where i have been getting stuck

 

Code (CSharp):

1.  
2.         public Material _material;
3.         [Range(0.01f,5f)]
4.         public float blurSpeed = 0.5f;
5.         //Change the string to the shader parameter
6.         private int shaderBlurID = Shader.PropertyToID("BlurValue");
7.      
8.         public float blurLerp {
9.             get { return _material.GetFloat(shaderBlurID); }
10.             set { _material.SetFloat(shaderBlurID, value); }
11.         }
12.  
13.         public System.Collections.IEnumerator currentBlur;
14.  
15.         public void StartBlurIn() {
16.             if (currentBlur != null) {
17.                 StopCoroutine(currentBlur);
18.                 currentBlur = null;
19.             }
20.             currentBlur = BlurIn();
21.             StartCoroutine(currentBlur);
22.         }
23.  
24.         public void StartBlurOut() {
25.             if (currentBlur != null) {
26.                 StopCoroutine(currentBlur);
27.                 currentBlur = null;
28.             }
29.             currentBlur = BlurOut();
30.             StartCoroutine(currentBlur);
31.         }
32.  
33.         public System.Collections.IEnumerator BlurIn() {
34.             float lerpval = blurLerp;
35.             while (lerpval < 1) {
36.                 lerpval += blurSpeed * Time.deltaTime;
37.                 yield return null;
38.             }
39.             currentBlur = null;
40.         }
41.  
42.         public System.Collections.IEnumerator BlurOut() {
43.             float lerpval = blurLerp;
44.             while (lerpval > 0) {
45.                 lerpval -= blurSpeed * Time.deltaTime;
46.                 yield return null;
47.             }
48.             currentBlur = null;
49.         }

 

thank you will try it out tonight