/// <summary>
/// Creates a new square texture atlas.
/// </summary>
/// <param name="size">The size of one side of the square texture.</param>
/// <returns></returns>
private int CreateAtlas()
{
TextureAtlas atlas = new TextureAtlas(atlasSize);
int newIndex = 0;
while (atlases.ContainsKey(newIndex))
{
++newIndex;
}
atlases.Add(newIndex, atlas);
return newIndex;
}
