diff --git a/src/Avalonia.Animation/AnimatorStateMachine`1.cs b/src/Avalonia.Animation/AnimatorStateMachine`1.cs index e37b0e592a..a5815956a8 100644 --- a/src/Avalonia.Animation/AnimatorStateMachine`1.cs +++ b/src/Avalonia.Animation/AnimatorStateMachine`1.cs @@ -123,121 +123,130 @@ namespace Avalonia.Animation double _tempDuration = 0d, _easedTime; - checkstate: - switch (_currentState) + bool handled = false; + + while (!handled) { - case KeyFramesStates.DoDelay: + switch (_currentState) + { + case KeyFramesStates.DoDelay: - if (_fillMode == FillMode.Backward - || _fillMode == FillMode.Both) - { - if (_currentIteration == 0) + if (_fillMode == FillMode.Backward + || _fillMode == FillMode.Both) { - _targetObserver.OnNext(_firstKFValue); + if (_currentIteration == 0) + { + _targetObserver.OnNext(_firstKFValue); + } + else + { + _targetObserver.OnNext(_lastInterpValue); + } + } + + if (_delayFrameCount > _delayTotalFrameCount) + { + _currentState = KeyFramesStates.DoRun; } else { - _targetObserver.OnNext(_lastInterpValue); + handled = true; + _delayFrameCount++; } - } - - if (_delayFrameCount > _delayTotalFrameCount) - { - _currentState = KeyFramesStates.DoRun; - goto checkstate; - } - _delayFrameCount++; - break; - - case KeyFramesStates.DoRun: - - if (_isReversed) - _currentState = KeyFramesStates.RunBackwards; - else - _currentState = KeyFramesStates.RunForwards; - - goto checkstate; - - case KeyFramesStates.RunForwards: - - if (_durationFrameCount > _durationTotalFrameCount) - { - _currentState = KeyFramesStates.RunComplete; - goto checkstate; - } + break; - _tempDuration = (double)_durationFrameCount / _durationTotalFrameCount; - _currentState = KeyFramesStates.RunApplyValue; + case KeyFramesStates.DoRun: - goto checkstate; + if (_isReversed) + _currentState = KeyFramesStates.RunBackwards; + else + _currentState = KeyFramesStates.RunForwards; - case KeyFramesStates.RunBackwards: + break; - if (_durationFrameCount > _durationTotalFrameCount) - { - _currentState = KeyFramesStates.RunComplete; - goto checkstate; - } + case KeyFramesStates.RunForwards: - _tempDuration = (double)(_durationTotalFrameCount - _durationFrameCount) / _durationTotalFrameCount; - _currentState = KeyFramesStates.RunApplyValue; + if (_durationFrameCount > _durationTotalFrameCount) + { + _currentState = KeyFramesStates.RunComplete; + } + else + { + _tempDuration = (double)_durationFrameCount / _durationTotalFrameCount; + _currentState = KeyFramesStates.RunApplyValue; - goto checkstate; + } + break; - case KeyFramesStates.RunApplyValue: + case KeyFramesStates.RunBackwards: - _easedTime = _targetAnimation.Easing.Ease(_tempDuration); + if (_durationFrameCount > _durationTotalFrameCount) + { + _currentState = KeyFramesStates.RunComplete; + } + else + { + _tempDuration = (double)(_durationTotalFrameCount - _durationFrameCount) / _durationTotalFrameCount; + _currentState = KeyFramesStates.RunApplyValue; + } + break; - _durationFrameCount++; - _lastInterpValue = Interpolator(_easedTime, _neutralValue); - _targetObserver.OnNext(_lastInterpValue); - _currentState = KeyFramesStates.DoRun; + case KeyFramesStates.RunApplyValue: - break; + _easedTime = _targetAnimation.Easing.Ease(_tempDuration); - case KeyFramesStates.RunComplete: + _durationFrameCount++; + _lastInterpValue = Interpolator(_easedTime, _neutralValue); + _targetObserver.OnNext(_lastInterpValue); + _currentState = KeyFramesStates.DoRun; + handled = true; + break; - if (_checkLoopAndRepeat) - { - _delayFrameCount = 0; - _durationFrameCount = 0; + case KeyFramesStates.RunComplete: - if (_isLooping) - { - _currentState = KeyFramesStates.DoRun; - } - else if (_isRepeating) + if (_checkLoopAndRepeat) { - if (_currentIteration >= _repeatCount) + _delayFrameCount = 0; + _durationFrameCount = 0; + + if (_isLooping) { - _currentState = KeyFramesStates.Stop; + _currentState = KeyFramesStates.DoRun; } - else + else if (_isRepeating) { - _currentState = KeyFramesStates.DoRun; + if (_currentIteration >= _repeatCount) + { + _currentState = KeyFramesStates.Stop; + } + else + { + _currentState = KeyFramesStates.DoRun; + } + _currentIteration++; } - _currentIteration++; - } - if (_animationDirection == PlaybackDirection.Alternate - || _animationDirection == PlaybackDirection.AlternateReverse) - _isReversed = !_isReversed; + if (_animationDirection == PlaybackDirection.Alternate + || _animationDirection == PlaybackDirection.AlternateReverse) + _isReversed = !_isReversed; - break; - } + break; + } - _currentState = KeyFramesStates.Stop; - goto checkstate; + _currentState = KeyFramesStates.Stop; + break; - case KeyFramesStates.Stop: + case KeyFramesStates.Stop: - if (_fillMode == FillMode.Forward - || _fillMode == FillMode.Both) - { - _targetControl.SetValue(_parent.Property, _lastInterpValue, BindingPriority.LocalValue); - } - _targetObserver.OnCompleted(); - break; + if (_fillMode == FillMode.Forward + || _fillMode == FillMode.Both) + { + _targetControl.SetValue(_parent.Property, _lastInterpValue, BindingPriority.LocalValue); + } + _targetObserver.OnCompleted(); + handled = true; + break; + } } } @@ -253,4 +262,4 @@ namespace Avalonia.Animation _currentState = KeyFramesStates.Disposed; } } -} \ No newline at end of file +}