void _updateLines()
{
int count = this._pointerLocations.Keys.Count;
D.assert(this._pointerQueue.Count >= count);
if (count < 2)
{
this._initialLine = this._currentLine;
}
else if (this._initialLine != null &&
this._initialLine.pointerStartId == this._pointerQueue[0] &&
this._initialLine.pointerEndId == this._pointerQueue[1])
{
this._currentLine = new _LineBetweenPointers(
pointerStartId: this._pointerQueue[0],
pointerStartLocation: this._pointerLocations[this._pointerQueue[0]],
pointerEndId: this._pointerQueue[1],
pointerEndLocation: this._pointerLocations[this._pointerQueue[1]]
);
}
else
{
this._initialLine = new _LineBetweenPointers(
pointerStartId: this._pointerQueue[0],
pointerStartLocation: this._pointerLocations[this._pointerQueue[0]],
pointerEndId: this._pointerQueue[1],
pointerEndLocation: this._pointerLocations[this._pointerQueue[1]]
);
this._currentLine = null;
}
}
void _updateLines()
{
int count = _pointerLocations.Keys.Count;
D.assert(_pointerQueue.Count >= count);
if (count < 2)
{
_initialLine = _currentLine;
}
else if (_initialLine != null &&
_initialLine.pointerStartId == _pointerQueue[0] &&
_initialLine.pointerEndId == _pointerQueue[1])
{
_currentLine = new _LineBetweenPointers(
pointerStartId: _pointerQueue[0],
pointerStartLocation: _pointerLocations[_pointerQueue[0]],
pointerEndId: _pointerQueue[1],
pointerEndLocation: _pointerLocations[_pointerQueue[1]]
);
}
else
{
_initialLine = new _LineBetweenPointers(
pointerStartId: _pointerQueue[0],
pointerStartLocation: _pointerLocations[_pointerQueue[0]],
pointerEndId: _pointerQueue[1],
pointerEndLocation: _pointerLocations[_pointerQueue[1]]
);
_currentLine = null;
}
}
bool _reconfigure(int pointer)
{
this._initialFocalPoint = this._currentFocalPoint;
this._initialSpan = this._currentSpan;
this._initialLine = this._currentLine;
this._initialHorizontalSpan = this._currentHorizontalSpan;
this._initialVerticalSpan = this._currentVerticalSpan;
if (this._state == _ScaleState.started)
{
if (this.onEnd != null)
{
VelocityTracker tracker = this._velocityTrackers[pointer];
D.assert(tracker != null);
Velocity velocity = tracker.getVelocity();
if (_ScaleGestureUtils._isFlingGesture(velocity))
{
Offset pixelsPerSecond = velocity.pixelsPerSecond;
if (pixelsPerSecond.distanceSquared >
Constants.kMaxFlingVelocity * Constants.kMaxFlingVelocity)
{
velocity = new Velocity(
pixelsPerSecond: (pixelsPerSecond / pixelsPerSecond.distance) *
Constants.kMaxFlingVelocity);
}
this.invokeCallback <object>("onEnd", () => {
this.onEnd(new ScaleEndDetails(velocity: velocity));
return(null);
});
}
else
{
this.invokeCallback <object>("onEnd", () => {
this.onEnd(new ScaleEndDetails(velocity: Velocity.zero));
return(null);
});
}
}
this._state = _ScaleState.accepted;
return(false);
}
return(true);
}
