WindowsPuzzleVisualizer.Game1.Draw C# (CSharp) Method

        protected override void Draw(GameTime gameTime)
        {
            PuzzleState currentState;
            bool solved;
            lock (_lockObject)
            {
                if (_showSolverProgress && !_solved && _solverState != null)
                {
                    _puzzleState = _solverState;
                }
                currentState = _puzzleState;
                solved = _solved;
            }

            if (solved)
            {
                graphics.GraphicsDevice.Clear(Color.CornflowerBlue);
            }
            else
            {
                graphics.GraphicsDevice.Clear(Color.Black);
            }

            //_spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.Opaque, SamplerState.LinearClamp, DepthStencilState.None, RasterizerState.CullNone);

            //int buttonTop = GraphicsDevice.Viewport.Width - 80;
            //_spriteBatch.DrawString(_spriteFont, "Prev", new Vector2(buttonTop, 0), Color.Black, -MathHelper.PiOver2, Vector2.Zero, 1f, SpriteEffects.None, 0);

            //_spriteBatch.End();

            GraphicsDevice.SetVertexBuffer(boxVB);
            GraphicsDevice.Indices = boxIB;

            //var min = ToVector(currentState.MinBounds);
            //var max = ToVector(currentState.MaxBounds);

            //var center = (max + min) / 2;
            //modelPosition = -center;

            foreach (var piece in currentState.Pieces)
            {
                if (!_pieceVisibility[piece.Piece.Name])
                {
                    continue;
                }

                Vector3 pieceColor = new Vector3(0, 0, 0);
                if (piece.Piece.Name == "Orange")
                {
                    pieceColor = RGB(255, 140, 0);
                }
                else if (piece.Piece.Name == "Blue")
                {
                    pieceColor = RGB(0, 0, 255);
                }
                else if (piece.Piece.Name == "Yellow")
                {
                    pieceColor = RGB(255, 255, 0);
                }
                else if (piece.Piece.Name == "Red")
                {
                    pieceColor = RGB(255, 0, 0);
                }
                else if (piece.Piece.Name == "Green")
                {
                    pieceColor = RGB(0, 255, 0);
                }
                else if (piece.Piece.Name == "Purple")
                {
                    pieceColor = RGB(160, 32, 240);
                }

                foreach (var point in piece.CurrentPoints)
                {
                    Vector3 pointPosition = ToVector(point);
                    if (_puzzlePiecesMoving.Contains(piece.Piece))
                    {
                        pointPosition += ToVector(_puzzleAnimationDirection) * _animationPercent;
                    }

                    //effect.World = Matrix.CreateFromYawPitchRoll(rectangleAngle,
                    //			rectangleAngle, rectangleAngle) * rectangleTransform;
                    effect.World = Matrix.CreateTranslation(pointPosition) *
                                    Matrix.CreateTranslation(modelPosition) *
                                    rotationMatrix;

            #if WINDOWS_PHONE || ANDROID || IOS
                    Vector3 upViewVector = Vector3.Right;
            #else
                    Vector3 upViewVector = Vector3.Up;
            #endif

                    effect.View = Matrix.CreateLookAt(cameraPosition,
                        Vector3.Zero, upViewVector);

                    //effect.View = Matrix.CreateLookAt(cameraPosition,
                    //    modelPosition, Vector3.Up);

                    //effect.Projection = Matrix.CreatePerspectiveFieldOfView(
                    //    MathHelper.ToRadians(45.0f), aspectRatio,
                    //    1.0f, 10000.0f);

                    effect.AmbientLightColor = pieceColor * 0.2f;
                    //effect.DiffuseColor = new Vector3(.5f, 0, 0);
                    effect.LightingEnabled = true;
                    //if (solved)
                    {
                        effect.DirectionalLight0.Enabled = true;
                        effect.DirectionalLight1.Enabled = true;
                        effect.DirectionalLight2.Enabled = true;
                    }
                    //effect.DirectionalLight0.DiffuseColor = pieceColor * 0.8f;
                    //effect.DirectionalLight1.DiffuseColor = pieceColor * new Vector3(0.8f, 0.6f, 0.6f);
                    //effect.DirectionalLight2.DiffuseColor = pieceColor * new Vector3(0.6f, 0.8f, 0.8f);
                    effect.DirectionalLight0.DiffuseColor = pieceColor * 0.8f;
                    effect.DirectionalLight1.DiffuseColor = pieceColor * 0.8f;
                    effect.DirectionalLight2.DiffuseColor = pieceColor * 0.8f;
                    //effect.DirectionalLight0.Direction = Vector3.Down;
                    //effect.DirectionalLight1.Direction = Vector3.Normalize(Vector3.Right + Vector3.Up + Vector3.Forward);
                    //effect.DirectionalLight2.Direction = Vector3.Normalize(Vector3.Left + Vector3.Up + Vector3.Forward);
                    effect.DirectionalLight0.Direction = Vector3.Normalize(Vector3.Forward + Vector3.Left + Vector3.Down);
                    effect.DirectionalLight1.Direction = Vector3.Normalize(Vector3.Right + Vector3.Up);
                    effect.DirectionalLight2.Direction = Vector3.Normalize(Vector3.Left + Vector3.Down);

                    effect.CurrentTechnique.Passes[0].Apply();

                    GraphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, 24, 0, 12);

                }

            }

            base.Draw(gameTime);
        }