How do I Rotate a Skybox's Material

Archived Forums Questions & Answers
1

How can I rotate a skybox's material so it simulates slow movement of the sky? Does anyone have a script that does this? I have a script that can animate UV's but it won't let me apply it to a material or a skybox.

Below is the UV animation script...maybe someone can modify it to animate the UV's of a skybox?

//Scroll main texture based on time
var scrollSpeed = 0.5;
function Update() {
    var offset = Time.time * scrollSpeed;
    renderer.material.mainTextureOffset = Vector2 (0,offset);
    renderer.material.mainTexture.wrapMode = TextureWrapMode.Repeat;
}

Any help is greatly appreciated. Thanks!

Shawn

haha ya I inserted my text inside the quotes for the code...but it kept refusing to properly format...do I need to do anything specific to get them formatted properly? thanks for your help, I appreciate it

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4 Answers

4
4

Sorry for digging up an old question that is also answered, but i would like to contribute my solution too.

What i did was to create a second camera, set the depth to be less than the depth of the main camera, at the main camera i set clear flags as “depth only” while the second camera would have clear flags set as “Skybox”. then a simple script for the second camera’s rotation and you get the effect that you want.

Thank you, I had no clue on how to do this until I tried your solution and it worked. I just created an account here to say thanks to you.

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Wish I had rep enough to +1; Ty!

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Great solution! Easy and works well. FYI i had to set the camera's culling mask to nothing as well.

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My god constantine that's brilliant! Why can i only upvote once?!

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Wonderful! Except that I am having some issues with it while in mouselook... Trying to figure out a way to disable it moving with the main cam :)

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3

This may interest you: http://answers.unity3d.com/questions/14461/how-do-i-make-a-moving-skybox

I'm pretty sure the Asset Store has a nice plugin for doing what you want.

Thanks, but I'm not looking to spend any money. I appreciate the advice.

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And for the help I get downvoted? Nice.

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I didn't want to downvote you. =( This should have been an upvote. I do appreciate your help. I am sorry. It won't let me remove the downvote either. So I accepted it as a correct answer instead. I hope you understand.

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Ah, thanks

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5

It’s fairly simple actually.

If you are using built in “Skybox/6 Sided” shader, modify “_Rotation” property.

Skybox skybox;

void Update()
{
	skybox.material.SetFloat("_Rotation", Time.time * 10);
}

If you want to do it with cubemap, copy and paste the code from built in shader “Skybox.shader” available in unity archives.

2

Of what I've read... You have skyboxes thought out wrong... It's not as easy as just moving it... Like clouds are very complex...

http://unity3d.com/support/documentation/Components/class-Skybox.html

I recommend reading up on it...

Also, this place has some good info on it:

http://www.unifycommunity.com/wiki/index.php?search=skybox&go=Go

But yeah, I'd rather you read it than I explain it wrong, but I might be wrong, but meh.

Good luck! =).

Ya I've read all of those. I've looked everywhere. I understand Skybox's and the multiple ways to create them. I just don't know how to animate the actual textures of the skybox to simulate movement. Thanks for the links though, I appreciate it. Shawn

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