Sprite3D.cs

public class Sprite3D
{
    public bool IsVisible { get; set; } = true;
    public Color Color { get; set; }
    public TextureDictionary TextureDictionary { get; set; }
    public string TextureName { get; set; }
    public Vector3 UpperLeft { get; set; }
    public Vector3 UpperRight { get; set; }
    public Vector3 BottomLeft { get; set; }
    public Vector3 BottomRight { get; set; }
    public RectangleF UV { get; set; }
    /// <summary>
    /// Gets or sets a value indicating whether the back-face should be drawn. If <c>true</c> both front and back faces will be drawn, 
    /// otherwise only the face that heads to (UpperRight-UpperLeft)x(UpperLeft-BottomLeft) is drawn.
    /// </summary>
    /// <value>
    ///   <c>true</c> if the back-face should be drawn; otherwise, <c>false</c>.
    /// </value>
    public bool BackFace { get; set; }

    public Sprite3D(TextureDictionary textureDictionary, string textureName, Vector3 upperLeft, Vector3 upperRight, Vector3 bottomLeft, Vector3 bottomRight, Color color)
    {
        Throw.IfNull(textureName, nameof(textureName));

        TextureDictionary = textureDictionary;
        TextureName = textureName;
        UpperLeft = upperLeft;
        UpperRight = upperRight;
        BottomLeft = bottomLeft;
        BottomRight = bottomRight;
        Color = color;
        UV = new RectangleF(0.0f, 0.0f, 1.0f, 1.0f);
        BackFace = false;
    }

    public Sprite3D(TextureDictionary textureDictionary, string textureName, Vector3 upperLeft, Vector3 upperRight, Vector3 bottomLeft, Vector3 bottomRight) 
        : this(textureDictionary, textureName, upperLeft, upperRight, bottomLeft, bottomRight, Color.White)
    {
    }

    public Sprite3D(TextureDictionary textureDictionary, string textureName)
        : this(textureDictionary, textureName, Vector3.Zero, Vector3.Zero, Vector3.Zero, Vector3.Zero, Color.White)
    {
    }

    public void SetTransform(Vector3 position, Vector2 size, Quaternion rotation)
    {
        SetTransform(Matrix.Scaling(new Vector3(size.X, 1.0f, size.Y)) * Matrix.RotationQuaternion(rotation) * Matrix.Translation(position));
    }

    public void SetTransform(Matrix transformationMatrix)
    {
        // TransformCoordinate from https://code.google.com/archive/p/slimmath/

        Vector3 v = new Vector3(-1.0f, 0.0f, 1.0f); // upper left
        Common.TransformCoordinate(ref v, ref transformationMatrix, out v);
        UpperLeft = v;

        v = new Vector3(1.0f, 0.0f, 1.0f); // upper right
        Common.TransformCoordinate(ref v, ref transformationMatrix, out v);
        UpperRight = v;

        v = new Vector3(-1.0f, 0.0f, -1.0f); // bottom left
        Common.TransformCoordinate(ref v, ref transformationMatrix, out v);
        BottomLeft = v;

        v = new Vector3(1.0f, 0.0f, -1.0f); // bottom right
        Common.TransformCoordinate(ref v, ref transformationMatrix, out v);
        BottomRight = v;
    }

    public void Draw()
    {
        if (!IsVisible)
            return;

        Draw(TextureDictionary, TextureName, UpperLeft, UpperRight, BottomLeft, BottomRight, Color, UV, BackFace);
    }

    public static void Draw(TextureDictionary textureDictionary, string textureName, Vector3 upperLeft, Vector3 upperRight, Vector3 bottomLeft, Vector3 bottomRight, Color color, RectangleF uv, bool backFace = false)
    {
        Throw.IfNull(textureName, nameof(textureName));

        if (!textureDictionary.IsLoaded)
            textureDictionary.Load();

        Vector3 ul = upperLeft, ur = upperRight, bl = bottomLeft, br = bottomRight;

        // N.DrawTriangle3D is native 0x29280002282F1928
        N.DrawTriangle3D(ul, bl, ur, color.R, color.G, color.B, color.A, textureDictionary.Name, textureName, new Vector3(uv.Left, uv.Top, 1f), new Vector3(uv.Left, uv.Bottom, 1f), new Vector3(uv.Right, uv.Top, 1f));
        N.DrawTriangle3D(bl, br, ur, color.R, color.G, color.B, color.A, textureDictionary.Name, textureName, new Vector3(uv.Left, uv.Bottom, 1f), new Vector3(uv.Right, uv.Bottom, 1f), new Vector3(uv.Right, uv.Top, 1f));

        if (backFace)
        {
            N.DrawTriangle3D(ur, bl, ul, color.R, color.G, color.B, color.A, textureDictionary.Name, textureName, new Vector3(uv.Right, uv.Top, 1f), new Vector3(uv.Left, uv.Bottom, 1f), new Vector3(uv.Left, uv.Top, 1f));
            N.DrawTriangle3D(ur, br, bl, color.R, color.G, color.B, color.A, textureDictionary.Name, textureName, new Vector3(uv.Right, uv.Top, 1f), new Vector3(uv.Right, uv.Bottom, 1f), new Vector3(uv.Left, uv.Bottom, 1f));
        }
    }
}