/// <summary>
/// Set the texture on the reference image.
/// </summary>
/// <param name="library">The <see cref="XRReferenceImageLibrary"/> being extended.</param>
/// <param name="index">The reference image index to modify.</param>
/// <param name="texture">The texture to set.</param>
/// <param name="keepTexture">Whether to store a strong reference to the texture. If <c>true</c>,
/// the texture will be available in the Player. Otherwise, <c>XRReferenceImage.texture</c> will be set to <c>null</c>.</param>
/// <exception cref="System.ArgumentNullException">Thrown if <paramref name="library"/> is <c>null</c>.</exception>
/// <exception cref="System.IndexOutOfRangeException">Thrown if <paramref name="index"/> is not between 0 and <paramref name="library"/><c>.count - 1</c>.</exception>
public static void SetTexture(this XRReferenceImageLibrary library, int index, Texture2D texture, bool keepTexture)
{
ValidateAndThrow(library, index);
var referenceImage = library.m_Images[index];
referenceImage.m_SerializedTextureGuid = SerializableGuidUtil.Create(GetGuidForTexture(texture));
referenceImage.m_Texture = keepTexture ? texture : null;
library.m_Images[index] = referenceImage;
}
/// <summary>
/// Creates an empty <c>XRReferenceImage<c/> and adds it to the library. The new
/// reference image is inserted at the end of the list of reference images.
/// </summary>
/// <param name="library">The <see cref="XRReferenceImageLibrary"/> being extended.</param>
/// <exception cref="System.ArgumentNullException">Thrown if <paramref name="library"/> is <c>null</c>.</exception>
public static void Add(this XRReferenceImageLibrary library)
{
if (library == null)
{
throw new ArgumentNullException("library");
}
library.m_Images.Add(new XRReferenceImage
{
m_SerializedGuid = SerializableGuidUtil.Create(Guid.NewGuid())
});
}