Getting/setting texture offsets during raycast

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Hi, I'm trying to get and modify the texture offset of an object picked by a raycast. Here is what i'm doing so far.

 MeshRenderer m_r = pickedObject.collider.gameObject.GetComponent("Mesh Renderer") as MeshRenderer; 
 
 Vector2 offset = m_r.material.GetTextureOffset("_MainTex");
 
 m_r.material.SetTextureOffset("_MainTex", new Vector2(offset.x + diff, offset.y));

pickedObject is the object found by the raycast and this block of code is only called if I find the correct object in the scene.

The difficulty I'm having here is that I can't seem to gather the texture offset or modify it, I get an exception "NullReferenceException: Object reference not set to an instance of an object" So the code cannot find the texture based off "_MainTex".

Finally, I have tried finding by using materials[0] rather than material but I get the same error.

Can someone help?

Answer 1

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Answer by BalsamicVinegar · Jul 12, 2011 at 04:32 AM

Actually, the solution is:

 Vector2 offset = pickedObject.collider.gameObject.renderer.material.mainTextureOffset;
 pickedObject.collider.gameObject.renderer.material.mainTextureOffset = new Vector2(offset.x + diff, offset.y);

:D

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Answer 2

Answer by vivek2012.du · Jul 12, 2011 at 05:13 AM

You can also refer this for your rayCast problem ..http://unity3dnotes.blogspot.com/2011/07/how-to-use-physicsraycast-in-your-game.html

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Getting/setting texture offsets during raycast

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