/// <summary>
/// Converts the underlying data to the image type T specified.
/// If the underlying image data cannot be converted to the specified type an InvalidCastException will be thrown.
/// Currently limited to assets of type Texture as C# doesn't have TGA support natively and I've not gone looking for a lib.
/// </summary>
/// <returns>The image in the type specified..</returns>
/// <param name="asset">Asset.</param>
/// <typeparam name="T">The 1st type parameter.</typeparam>
public static T ToImage <T>(this StratusAsset asset)
{
if (!asset.HasAssetData())
{
return(default(T));
}
switch (asset.Type)
{
case (sbyte)AssetType.Texture:
return(CSJ2K.J2kImage.FromBytes(asset.Data).As <T>());
case (sbyte)AssetType.ImageJPEG:
System.Drawing.Image image;
using (var stream = new System.IO.MemoryStream(asset.Data)) {
image = System.Drawing.Image.FromStream(stream);
}
if (!image.GetType().IsAssignableFrom(typeof(T)))
{
throw new InvalidCastException($"Cannot cast to '{typeof(T).Name}'; type must be assignable from '{image.GetType().Name}'");
}
return((T)(object)image);
default:
return(default(T));
}
}
public static void TestStratusAsset_HasAssetData_Null()
{
var asset = new StratusAsset {
Data = null
};
Assert.False(asset.HasAssetData());
}
public static void TestStratusAsset_HasAssetData_One()
{
var asset = new StratusAsset {
Data = new byte[] { 1 }
};
Assert.True(asset.HasAssetData());
}
public static void TestStratusAsset_HasAssetData_Empty()
{
var asset = new StratusAsset {
Data = new byte[] { }
};
Assert.False(asset.HasAssetData());
}
