static Histogram GetHistogramFromParameter(string param)
{
var sanitizedParam = param.Replace("\\", "/");
var idb = indexes.FirstOrDefault(db => db.ContainsAsset(sanitizedParam));
if (idb != null)
{
var imageData = idb.GetImageDataFromPath(sanitizedParam);
return(imageData.histogram);
}
if (!File.Exists(sanitizedParam))
{
return(null);
}
var texture = AssetDatabase.LoadMainAssetAtPath(sanitizedParam) as Texture2D;
if (texture == null)
{
return(null);
}
Color32[] pixels;
if (texture.isReadable)
{
pixels = texture.GetPixels32();
}
else
{
var copy = TextureUtils.CopyTextureReadable(texture, texture.width, texture.height);
pixels = copy.GetPixels32();
}
var histogram = new Histogram();
ImageUtils.ComputeHistogram(pixels, histogram);
return(histogram);
}