Silverlight制作逐幀動畫 v2 - part2

Silverlight制作逐幀動畫 v2 - part2

        private string[] shippics = new string[] { "Ship1/1.png", "Ship1/2.png", "Ship1/3.png", "Ship1/4.png" };

        protected DateTime lastTick;

        protected TimeSpan elapsed;

        private double lasrFrameTime = 0;

        private int currentFrame = 0;

        private double fps = 15;

        public MainPage()

        {

            InitializeComponent();

            lastTick = DateTime.Now;

            CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering);

        }

        void CompositionTarget_Rendering(object sender, EventArgs e)

            DateTime now = DateTime.Now;

            elapsed = now - lastTick;

            lasrFrameTime += elapsed.TotalSeconds;

            if (lasrFrameTime >( 1 / fps))

            {

                lasrFrameTime = 0;

                currentFrame++;

                currentFrame %= shippics.Length;

                RenderShip();

            }

        private void RenderShip()

            var imageBrush = new ImageBrush();

            imageBrush.Stretch = Stretch.None;

            imageBrush.AlignmentX = AlignmentX.Left;

            imageBrush.AlignmentY = AlignmentY.Top;

            imageBrush.ImageSource = new BitmapImage(new Uri("/slShipAnimate;component/" + shippics[currentFrame], UriKind.Relative));

            myShip.Fill = imageBrush;