private static int GetTouchSwipeMatch(GestureEventData touch, ISwipeGesture handler)
{
int matchDir = -1;
float matchDotProduct = 0;
for (int i = 0; i < handler.SwipeDirections.Length; i++)
{
Vector2 testDir = handler.SwipeDirections[i];
Vector2 swipeDir = touch.pointer.position - touch.startPosition;
//float distance = resIndependent.magnitude;
//Debug.LogFormat("Distance is {0}", distance);
float dotProduct = Vector2.Dot(testDir.normalized, swipeDir.normalized);
float deviance = 1f - dotProduct;
if (deviance <= handler.SwipeMaxDeviance)
{
float testDeviance = 1f - matchDotProduct;
if (deviance < testDeviance)
{
matchDir = i;
matchDotProduct = dotProduct;
}
}
}
return(matchDir);
}
private static void HandleSwipe(ISwipeGesture handler, BaseEventData eventData)
{
GestureEventData data = eventData as GestureEventData;
if (handler == null || data == null)
{
return;
}
if (handler.SwipeTouchCount != events.Length || data.released == false)
{
return;
}
int matchDir = -1;
// Loop through the touch events, finding the matching swipe direction
for (int i = 0; i < events.Length; i++)
{
int match = GetTouchSwipeMatch(events[i], handler);
if (i == 0)
{
matchDir = match;
continue;
}
if (match != matchDir)
{
matchDir = -1;
break;
}
}
if (matchDir >= 0)
{
handler.OnSwipeGesture(data.pointer, matchDir);
}
}
