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  1. PO
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    <p>If I were you I would do it this way- when user presses the screen for the first time, set a global variable <code>TimeSpan time</code> to <code>TimeSpan.Zero</code>. Then, on every update, add <code>gameTime.ElapsedRealTime</code> to time variable. When user releases, your can get your time from time variable, it's easy. To get seconds just use: <code>time.totalSeconds</code>.</p> <p>I've modified your code a little, here you go:</p> <pre><code>public class Game1 : Microsoft.Xna.Framework.Game { GraphicsDeviceManager graphics; SpriteBatch spriteBatch; float DragVelocity, DragDistance, DragTime; TimeSpan time; Vector2 StartPoint, EndPoint; bool isThisFirstTime = true; public Game1() { graphics = new GraphicsDeviceManager(this); Content.RootDirectory = "Content"; TargetElapsedTime = TimeSpan.FromTicks(333333); InactiveSleepTime = TimeSpan.FromSeconds(1); } protected override void Initialize() { base.Initialize(); } protected override void LoadContent() { spriteBatch = new SpriteBatch(GraphicsDevice); TouchPanel.EnabledGestures = GestureType.DragComplete | GestureType.FreeDrag; } protected override void Update(GameTime gameTime) { while (TouchPanel.IsGestureAvailable) { GestureSample gs = TouchPanel.ReadGesture(); switch (gs.GestureType) { case GestureType.FreeDrag: if (isThisFirstTime == true) { time = TimeSpan.Zero; StartPoint = gs.Position; isThisFirstTime = false; } else { EndPoint = gs.Position; time += gameTime.ElapsedGameTime; } break; case GestureType.DragComplete: isThisFirstTime = true; DragTime = (float) time.TotalSeconds; DragDistance = Vector2.Distance(StartPoint, EndPoint); DragVelocity = DragDistance / DragTime; break; } } base.Update(gameTime); } protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.CornflowerBlue); base.Draw(gameTime); } } </code></pre>
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    1. POHow can I measure the time of a drag on my Windows Phone?
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    1. USMichał Żołnieruk
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    1. POHow can I measure the time of a drag on my Windows Phone?
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    1. COThanx. It works. But sometimes, if I perform very short drag, the variable DragVelocity has not a normal value, but it just says Infinity. Why is this sometimes happening when I perform a very short drag? How can I check if the value is Infinity? I want to write something on the screen if the value is Infinity, for example: "Please, perform a new drag". I tried it with the following code, but it's not working: if (DragVelocity == Infinity)
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      1. USLeo
    2. CO`FreeDrag` gesture is detected after a fixed length of movement, this means that if your drag is too short the game won't detect it, and I think that results in `DragVelocity = DragDistance / DragTime` where `DragTime` is 0.
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      1. USpinckerman
    3. COYou're right. In this case, the DragTime is 0.
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