/// <summary>
/// Registers the pan gesture recognizer.
/// </summary>
void RegisterPanGestureRecognizer()
{
float previousX = 0;
panGesture = new UIPanGestureRecognizer(() => {
switch (panGesture.State)
{
case UIGestureRecognizerState.Began:
previousX = (float)panGesture.LocationOfTouch(0, this).X;
break;
case UIGestureRecognizerState.Changed:
var touch = panGesture.LocationOfTouch(0, this);
var copy = ScrollPosition;
var delta = touch.X - previousX;
copy -= (int)delta;
copy = (int)Math.Min(Math.Max(copy, 0), 4096 - TotalSamples);
previousX = (float)touch.X;
ScrollPosition = copy;
UpdateScrollIndicator();
Update();
break;
case UIGestureRecognizerState.Ended:
break;
}
});
panGesture.MaximumNumberOfTouches = 2;
panGesture.MinimumNumberOfTouches = 2;
this.AddGestureRecognizer(panGesture);
}
void HandlePanTouch(UIPanGestureRecognizer recognizer)
{
bool startingAnim = false;
if (recognizer.State == UIGestureRecognizerState.Changed)
{
startingAnim = true;
}
if (startingAnim)
{
var loc = recognizer.LocationOfTouch(0, recognizer.View);
var touchAnimation = new RandomTouch(_currentTriangulation, 6, (float)(loc.X * UIScreen.MainScreen.Scale), (float)(loc.Y * UIScreen.MainScreen.Scale), 250);
_polyLibViewRef.AddAnimation(touchAnimation);
}
}