(c) Interactive Lab
Licensed under MIT license.
version: 1.0

TouchScript is a multi-touch framework originally created by Interactive Lab to develop interactive installations.

Up to date documentation is available at our web site.
If you have any questions feel free to ask them here.

• Supports TUIO, mouse and Windows 7 touch input
• Manages gestures hierarchy and rules distribution of touch points to gestures
• Can group touch points to clusters on big touch surfaces
• Easy to write custom gesture recognizers

TouchScript consists of a number of components to configure touch and gesture recognition, implementations of common gestures and other tools. Gesture recognition works very similar to iOS implementation: a number of gesture recognizers attached to GameObjects receive touch point events and signal to central manager if they recognize a sequence of touch events as a gesture.

Remember, GameObjects have to have colliders to be touchable.

• Import TouchScript unity package or copy Plugins folder to your Assets folder
• [Optional] Configure scripts execution order in the IDE so that you had all touch inputs executed before TouchManager and before default scripts execution time. For example, set MouseInput to -1003, TuioInput to -1002 and TouchManager to -1001. This step will increase interface responsiveness.
• Add TouchOptions component to a GameObject in your scene.
• Add needed input sources: MouseInput, TuioInput or WMTouchInput.
• Add Debug Camera prefab to your scene to see 2d touches on the screen.

• Windows 7 touch recognition doesn't work in Unity IDE.

• Copy UnityEngine.dll to Lib folder since the framework links to it. If anyone knows a better way of doing this without hardcoding paths or setting system variables, please let us know.

In Gesture and Event Propagation scene we have a hierarchy of objects which got different gestures attached.

Check out Main Camera for inputs configuration and touch options.

Let's take a look at Plane GameObject. It has the following gestures attached: Pan, Scale, Rotate and Flick. Also two behaviors which depend on these gestures: Transformer2D and TSFLickDetector. They all work together because they reference each other in Will Recognize With array. Otherwise only the first gesture to recognize in transforms hierarchy will be able to access these touch points.

Check out the documentation to see what gestures' parameters mean.

Transformer2D applies transforms from attached gestures to the GameObject. Open TSFlickDetector to see how it works. It has only one line of code which uses FlickGesture's StateChanged event to get notified when it is recognized.

GetComponent<FlickGesture>().StateChanged += delegate(object sender, GestureStateChangeEventArgs args) { 
if (args.State == Gesture.GestureState.Recognized) print("FLICK"); };

Other objects in the scene also have Press, Release and Tap gestures attached which are self explanatory. Bump and Colored behaviors show how to handle events when these gestures are recognized.

if (GetComponent<PressGesture>() != null) GetComponent<PressGesture>().StateChanged += onPress;
if (GetComponent<ReleaseGesture>() != null) GetComponent<ReleaseGesture>().StateChanged += onRelease;

private void onRelease(object sender, GestureStateChangeEventArgs gestureStateChangeEventArgs) {
  transform.localScale = startScale;
}

private void onPress(object sender, GestureStateChangeEventArgs gestureStateChangeEventArgs) {
  transform.localScale = startScale * .7f;
}

Notice that cubes in the example can be tapped and dragged separately or with the parent cube.

tap.StateChanged += (sender, args) => { 
  if (args.State == Gesture.GestureState.Recognized) 
    renderer.material.color = new Color(Random.Range(0f, 1f), Random.Range(0f, 1f), Random.Range(0f, 1f)); 
};

See sample scenes in Scenes folder.