Dynamic Skybox

Questions & Answers
1

Hi,

So I currently have a skybox that gets rendered with six still images. I’d like to continue using this method, but with a little different way of getting the images instead of them being in my project. I’d like to have a website that has a picture constantly being updated. There would have to be six sites for this to transmit into a skybox, though for now being perfect images for a skybox doesn’t matter to me, I just want the functionality.

So the code below I used on a plane to pull an image off of a website and apply it to the texture.

// url of image;
var url = "http://ETC";
function Start () {

     // Start a download of the given URL
    var www : WWW = new WWW (url);

    // wait for download to complete
    yield www;
    
    // assign texture
    renderer.material.mainTexture = www.texture; 
}

I’d like to use this same method, but the thing is I don’t know how to apply code to the skybox considering these images are being taken directly from project.

2

When you switch your inspector into Debug mode you can see the texture parameters in list form. They are:

_FrontTex, _BackTex, _LeftTex, _RightTex, _UpTex, _DownTex

There are also _MainTex and _Tex but i guess they aren’t used.

To set them just use [Material.SetTexture][1].

GetComponent.<Skybox>().material.SetTexture("_FrontTex",www.texture);

edit

You can load one texture at a time and load them one by one, or load them all at once. WWW-calls are asynchron so you can start all 6 downloads at once and wait for them to finish.

private static var skyboxTextures : String[] = ["_FrontTex", "_BackTex", "_LeftTex", "_RightTex", "_UpTex", "_DownTex"];
var url = "http://domain/path/to/skybox/folder/";

function LoadSkybox(skyboxName : String)
{
    var www : WWW[] =  new WWW[6];
    for (var i = 0;i < 6; i++)
    {
        www _= new WWW(url + skyboxName + skyboxTextures *+ ".png");*_

}
var mat = GetComponent.().material;
for (i = 0;i < 6; i++)
{
yield www*; // wait for all images to finish*
mat.SetTexture(skyboxTextures_,www*.texture);
}
}*_

function Start()
{
LoadSkybox(“desert”);
* // Images should be named:*
* // “desert_FrontTex.png”
// “desert_BackTex.png”
_ // …
}
[1]: http://unity3d.com/support/documentation/ScriptReference/Material.SetTexture.html*_

3

dont forget to clamp the textures, the famous white lines would appear on your skybox