/// <summary>
/// Converts a DigitalRune <see cref="Texture"/> to an XNA <see cref="TextureContent"/>.
/// </summary>
/// <param name="texture">The <see cref="Texture"/>.</param>
/// <param name="identity">The content identity.</param>
/// <returns>The <see cref="TextureContent"/>.</returns>
public static TextureContent ToContent(Texture texture, ContentIdentity identity)
{
var description = texture.Description;
switch (description.Dimension)
{
case TextureDimension.Texture1D:
case TextureDimension.Texture2D:
{
var textureContent = new Texture2DContent { Identity = identity };
for (int mipIndex = 0; mipIndex < description.MipLevels; mipIndex++)
{
var image = texture.Images[texture.GetImageIndex(mipIndex, 0, 0)];
textureContent.Mipmaps.Add(ToContent(image));
}
return textureContent;
}
case TextureDimension.TextureCube:
{
var textureContent = new TextureCubeContent { Identity = identity };
for (int faceIndex = 0; faceIndex < 6; faceIndex++)
{
for (int mipIndex = 0; mipIndex < description.MipLevels; mipIndex++)
{
var image = texture.Images[texture.GetImageIndex(mipIndex, faceIndex, 0)];
textureContent.Faces[faceIndex].Add(ToContent(image));
}
}
return textureContent;
}
case TextureDimension.Texture3D:
{
var textureContent = new Texture3DContent { Identity = identity };
for (int zIndex = 0; zIndex < description.Depth; zIndex++)
{
textureContent.Faces.Add(new MipmapChain());
for (int mipIndex = 0; mipIndex < description.MipLevels; mipIndex++)
{
var image = texture.Images[texture.GetImageIndex(mipIndex, 0, zIndex)];
textureContent.Faces[zIndex].Add(ToContent(image));
}
}
return textureContent;
}
}
throw new InvalidOperationException("Invalid texture dimension.");
}
public void Texture3DContent()
{
var content = new Texture3DContent();
Assert.NotNull(content.Faces);
Assert.AreEqual(0, content.Faces.Count);
var face0 = new MipmapChain(new PixelBitmapContent<Color>(2, 2));
content.Faces.Add(face0);
Assert.AreEqual(1, content.Faces.Count);
Assert.AreEqual(face0, content.Faces[0]);
Assert.AreEqual(1, content.Faces[0].Count);
content.Faces[0].Add(new PixelBitmapContent<Color>(1, 1));
Assert.AreEqual(2, content.Faces[0].Count);
var face2 = new MipmapChain(new PixelBitmapContent<Color>(2, 2));
content.Faces.Add(face2);
Assert.AreEqual(face2, content.Faces[1]);
Assert.AreEqual(2, content.Faces.Count);
var face1 = new MipmapChain(new PixelBitmapContent<Color>(2, 2));
content.Faces.Insert(1, face1);
Assert.AreEqual(face1, content.Faces[1]);
Assert.AreEqual(3, content.Faces.Count);
content.Faces.RemoveAt(0);
Assert.AreEqual(2, content.Faces.Count);
Assert.AreEqual(face1, content.Faces[0]);
Assert.AreEqual(face2, content.Faces[1]);
content.Faces.Remove(face1);
Assert.AreEqual(1, content.Faces.Count);
Assert.AreEqual(face2, content.Faces[0]);
content.Faces.Clear();
Assert.AreEqual(0, content.Faces.Count);
}