private void OnPinchUpdated(object sender, PinchGestureUpdatedEventArgs e)
{
switch (e.Status)
{
case GestureStatus.Started:
StartScale = CapturedImage.Scale;
AnchorX = e.ScaleOrigin.X;
AnchorY = e.ScaleOrigin.Y;
break;
case GestureStatus.Running:
double current = CapturedImage.Scale + (e.Scale - 1) * StartScale;
CapturedImage.Scale = Clamp(current, MIN_SCALE * (1 - OVERSHOOT), MAX_SCALE * (1 + OVERSHOOT));
break;
case GestureStatus.Completed:
if (Scale > MAX_SCALE)
{
CapturedImage.ScaleTo(MAX_SCALE, 250, Easing.SpringOut);
}
else if (Scale < MIN_SCALE)
{
CapturedImage.ScaleTo(MIN_SCALE, 250, Easing.SpringOut);
}
break;
}
}
private void OnTapped(object sender, EventArgs e)
{
if (CapturedImage.Scale > MIN_SCALE || CapturedImage.Scale < MIN_SCALE)
{
CapturedImage.ScaleTo(MIN_SCALE, 250, Easing.CubicInOut);
CapturedImage.TranslateTo(0, 0, 250, Easing.CubicInOut);
}
else
{
AnchorX = AnchorY = 0.5; //TODO tapped position
CapturedImage.ScaleTo(MAX_SCALE, 250, Easing.CubicInOut);
}
}