public void Update()
{
//handle the touch input
if (Input.touchCount > 0)
{
Touch currentTouch = Input.GetTouch(0);
if (currentTouch.phase == TouchPhase.Began)
{
canStartTouchManipulation = CanStartTouchManipulation();
}
if (canStartTouchManipulation)
{
if (currentTouch.phase == TouchPhase.Began)
{
startNewSketchObject = true;
}
else if (currentTouch.phase == TouchPhase.Stationary || (currentTouch.phase == TouchPhase.Moved && startNewSketchObject == false && currentLineSketchObject.getNumberOfControlPoints() > 0))
{
if (startNewSketchObject)
{
//create a new sketch object
CreateNewLineSketchObject();
startNewSketchObject = false;
}
else if (currentLineSketchObject)
{
//Add new control point according to current device position
currentLineSketchObject.addControlPointContinuous(FirstPersonCamera.transform.position + FirstPersonCamera.transform.forward * .3f);
}
}
else if (currentTouch.phase == TouchPhase.Ended)
{
//if an empty sketch object was created, delete it
if (startNewSketchObject == false && currentLineSketchObject.getNumberOfControlPoints() < 1)
{
Destroy(currentLineSketchObject.gameObject);
currentLineSketchObject = null;
}
//if a swipe occured and no new sketch object was created, delete the last sketch object
if ((currentTouch.position - currentTouch.rawPosition).magnitude > Screen.width * 0.05 &&
((startNewSketchObject == false && currentLineSketchObject == null) || startNewSketchObject == true))
{
DeleteLastLineSketchObject();
}
else
{
AddCurrentLineSketchObjectToStack();
}
canStartTouchManipulation = false;
}
}
}
}