Simple decal system only working in editor

Question

I develop Web Player application. In scene i have some 3d model (example: box). In runtime i upload *.png image an use this image on Decal to my car. I use this package: https://www.assetstore.unity3d.com/en/#!/content/13889 for Decal System. I Editor work fine, but in runtime i can't use my picture in decal System. task: need at any time replace a picture and it becomes a good in Decal System. Please help me. Thanks!

public GameObject decal;
public Material mat;
Texture2D texTmp;
Sprite spr;
string settingsContent;
string[] settingsSplit;

int texWidth,texHeight;

void Awake()
{
    StartCoroutine(DownloadSettings());
}

IEnumerator DownloadSettings()
{
    WWW www = new WWW("http://585649.workwork.web.hosting-test.net/Logo1/settings.txt");
    yield return www;
    settingsContent = www.text;
    settingsSplit = settingsContent.Split('\n');
    if (www.isDone)
    {
        texWidth = int.Parse(settingsSplit[1]);
        texHeight = int.Parse(settingsSplit[2]);
        texTmp = new Texture2D(texWidth,texHeight);
        StartCoroutine(DownloadLogos());
    }
}

IEnumerator DownloadLogos()
{
    WWW www = new WWW(settingsSplit[0]);
    yield return www;
    www.LoadImageIntoTexture(texTmp);
    if (www.isDone)
    {
        spr = Sprite.Create(texTmp, new Rect(0, 0, texTmp.width, texTmp.height), Vector2.zero, 100);
        spr.texture.wrapMode = TextureWrapMode.Clamp;
        mat.mainTexture = spr.texture;
        Color clr = new Color32(255,255,255,255);
        clr.a = float.Parse(settingsSplit[3]);
        mat.color = clr;
        decal.AddComponent("Decal");
        decal.GetComponent<Decal>().material = mat;
        decal.GetComponent<Decal>().sprite = spr;
    }
}

Answer 1

I understood. Thank you all!

public Decal decal;
public Material mat;
Texture2D texTmp;
Sprite spr;
string settingsContent;
string[] settingsSplit;

int texWidth,texHeight;
float sizeX, sizeY;

void Awake()
{
    StartCoroutine(DownloadSettings());
}

IEnumerator DownloadSettings()
{
    WWW www = new WWW("http://sitesman.com/logotypes/Logo1/settings.txt");
    yield return www;
    settingsContent = www.text;
    settingsSplit = settingsContent.Split('\n');
    if (www.isDone)
    {
        texWidth = int.Parse(settingsSplit[1]);
        texHeight = int.Parse(settingsSplit[2]);
        texTmp = new Texture2D(texWidth,texHeight);

        if(texWidth > texHeight)
        {
            sizeX = texWidth / texHeight;
            sizeY = 1;
        }
        else if (texWidth < texHeight)
        {
            sizeX = 1;
            sizeY = texHeight / texWidth;
        }
        else
        {
            sizeX = 1;
            sizeY = 1;
        }

        float multipier = 1;

        if(settingsSplit[4] != null)
        {
            multipier = float.Parse(settingsSplit[4]);
        }

        decal.transform.localScale = new Vector3(sizeX*multipier,sizeY*multipier,2f);

        StartCoroutine(DownloadLogos());
    }
}

IEnumerator DownloadLogos()
{
    WWW www = new WWW(settingsSplit[0]);
    yield return www;
    www.LoadImageIntoTexture(texTmp);
    if (www.isDone)
    {
        spr = Sprite.Create(texTmp, new Rect(0, 0, texTmp.width, texTmp.height), Vector2.zero, 100);
        spr.texture.wrapMode = TextureWrapMode.Clamp;
        mat.mainTexture = spr.texture;
        Color clr = new Color32(255,255,255,255);
        clr.a = float.Parse(settingsSplit[3]);
        mat.color = clr;
        decal.material = mat;
        decal.sprite = spr;
        BuildDecal(decal);
    }
}

GameObject go;
private GameObject[] affectedObjects;

private void BuildDecal(Decal decal)
{
    MeshFilter filter = decal.GetComponent<MeshFilter>();
    if (filter == null) filter = decal.gameObject.AddComponent<MeshFilter>();
    if (decal.renderer == null) decal.gameObject.AddComponent<MeshRenderer>();
    decal.renderer.material = decal.material;

    if (decal.material == null || decal.sprite == null)
    {
        filter.mesh = null;
        return;
    }

    affectedObjects = GetAffectedObjects(decal.GetBounds(), decal.affectedLayers);
    foreach (GameObject go in affectedObjects)
    {
        DecalBuilder.BuildDecalForObject(decal, go);
    }
    DecalBuilder.Push(decal.pushDistance);

    Mesh mesh = DecalBuilder.CreateMesh();
    if (mesh != null)
    {
        mesh.name = "DecalMesh";
        filter.mesh = mesh;
    }
}

private static GameObject[] GetAffectedObjects(Bounds bounds, LayerMask affectedLayers)
{
    MeshRenderer[] renderers = (MeshRenderer[])GameObject.FindObjectsOfType<MeshRenderer>();
    List<GameObject> objects = new List<GameObject>();
    foreach (Renderer r in renderers)
    {
        if (!r.enabled) continue;
       // if (!IsLayerContains(affectedLayers, r.gameObject.layer)) continue;
        if (r.GetComponent<Decal>() != null) continue;

        if (bounds.Intersects(r.bounds))
        {
            objects.Add(r.gameObject);
        }
    }
    return objects.ToArray();
}