/// <summary>
/// Generates thumbnail images (normal, focused, hovered, and pressed) for the given prefab.
/// </summary>
/// <param name="name">FindIt asset name</param>
/// <param name="prefab">The prefab to generate thumbnails for</param>
/// <returns></returns>
internal bool CreateThumbnail(string name, PrefabInfo prefab)
{
// Check for valid data.
if (prefab == null || name.IsNullOrWhiteSpace())
{
return(false);
}
// Don't need to do anything if the name already matches.
if (prefab.m_Thumbnail == name)
{
return(true);
}
// Reset zoom.
renderer.Zoom = 4f;
// Success flag.
bool wasRendered = false;
if (prefab is BuildingInfo building)
{
wasRendered = BuildingThumbnail(building);
}
else if (prefab is PropInfo prop)
{
// Different treatment for props with blend or solid shaders.
if (prop.m_material.shader == Asset.shaderBlend || prop.m_material.shader == Asset.shaderSolid)
{
Texture2D mainTexture = prop.m_material.GetTexture("_MainTex") as Texture2D;
Texture2D aci = prop.m_material.GetTexture("_ACIMap") as Texture2D;
Texture2D texture = new Texture2D(mainTexture.width, mainTexture.height);
ResourceLoader.CopyTexture(mainTexture, texture);
Color32[] colors = texture.GetPixels32();
if (aci != null)
{
ResourceLoader.CopyTexture(aci, texture);
Color32[] aciColors = texture.GetPixels32();
for (int i = 0; i < colors.Length; i++)
{
colors[i].a -= aciColors[i].r;
}
texture.SetPixels32(0, 0, texture.width, texture.height, colors);
texture.Apply();
}
ImageUtils.ScaleTexture2(texture, 109 - 10, 100 - 10);
texture.name = name;
prefab.m_Thumbnail = name;
prefab.m_Atlas = ResourceLoader.CreateTextureAtlas("FindItThumbnails_" + name, new string[] { }, null);
ResourceLoader.AddTexturesInAtlas(prefab.m_Atlas, ImageUtils.GenerateMissingThumbnailVariants(texture));
// Debugging.Message("Generated thumbnails for: " + name);
return(true);
}
wasRendered = PropThumbnail(prop);
}
else if (prefab is TreeInfo tree)
{
wasRendered = TreeThumbnail(tree);
}
// See if we were succesful in rendering.
if (wasRendered)
{
// Back up game's current active texture.
Texture2D thumbnailTexture = ResourceLoader.ConvertRenderTexture(renderer.Texture);
// Set names.
thumbnailTexture.name = name;
prefab.m_Thumbnail = name;
// Create new texture atlas and add thumbnail variants.
prefab.m_Atlas = ResourceLoader.CreateTextureAtlas("FindItThumbnails_" + name, new string[] { }, null);
ResourceLoader.ResizeTexture(thumbnailTexture, 109, 100);
ResourceLoader.AddTexturesInAtlas(prefab.m_Atlas, ImageUtils.GenerateMissingThumbnailVariants(thumbnailTexture));
// Debugging.Message("Generated thumbnails for: " + name);
}
else
{
// Rendering didn't occur - apply default thumbnail sprite name.
prefab.m_Thumbnail = "ThumbnailBuildingDefault";
}
return(wasRendered);
}
