protected override void RenderEvent(FrameRange viewRange, FrameRange validKeyframeRange) { int startOffsetHandleId = EditorGUIUtility.GetControlID(FocusType.Passive); switch (Event.current.type) { case EventType.MouseDown: if (Event.current.alt && EditorGUIUtility.hotControl == 0 && _eventRect.Contains(Event.current.mousePosition)) { EditorGUIUtility.hotControl = startOffsetHandleId; _frameMouseDown = SequenceEditor.GetFrameForX(Event.current.mousePosition.x) - _playAudioEvt.Start; Event.current.Use(); } break; case EventType.MouseDrag: if (EditorGUIUtility.hotControl == startOffsetHandleId) { int mouseCurrentFrame = Mathf.Clamp(SequenceEditor.GetFrameForX(Event.current.mousePosition.x) - _playAudioEvt.Start, 0, _playAudioEvt.Length); int mouseDelta = _frameMouseDown - mouseCurrentFrame; if (mouseDelta != 0) { _frameMouseDown = mouseCurrentFrame; _startOffset.serializedObject.Update(); _startOffset.intValue = Mathf.Clamp(_startOffset.intValue + mouseDelta, 0, _playAudioEvt.GetMaxStartOffset()); _startOffset.serializedObject.ApplyModifiedProperties(); } Event.current.Use(); } break; case EventType.MouseUp: if (EditorGUIUtility.hotControl == startOffsetHandleId) { EditorGUIUtility.hotControl = 0; Event.current.Use(); } break; } int frameRangeLength = _playAudioEvt.Length; base.RenderEvent(viewRange, validKeyframeRange); if (frameRangeLength != _playAudioEvt.Length) { _startOffset.serializedObject.Update(); _startOffset.intValue = Mathf.Clamp(_startOffset.intValue, 0, _playAudioEvt.GetMaxStartOffset()); _startOffset.serializedObject.ApplyModifiedProperties(); } if (_currentClip != _playAudioEvt.AudioClip || _clipMinMaxData == null) { _clipMinMaxData = FUtility.GetAudioMinMaxData(_playAudioEvt.AudioClip); _currentClip = _playAudioEvt.AudioClip; } //--波形图绘制 //if (Event.current.type == EventType.Repaint && _clipMinMaxData != null && _currentClip != null) //{ // float border = 2; // Rect waveformRect = _eventRect; // waveformRect.xMin += border; // waveformRect.xMax -= border; // FrameRange visibleEvtRange = _playAudioEvt.FrameRange; // float startOffset = _playAudioEvt.StartOffset; // if (viewRange.Start > visibleEvtRange.Start) // { // startOffset += viewRange.Start - visibleEvtRange.Start; // visibleEvtRange.Start = viewRange.Start; // } // if (viewRange.End < visibleEvtRange.End) // { // visibleEvtRange.End = viewRange.End; // } // int numChannels = _currentClip.channels; // int numSamples = _clipMinMaxData.Length / (2 * numChannels); // Rect fullWaveformRect = _eventRect; // fullWaveformRect.width = SequenceEditor.PixelsPerFrame * _currentClip.length * SequenceEditor.Sequence.FrameRate; // GUI.BeginClip(waveformRect); // fullWaveformRect.yMin -= 5; // fullWaveformRect.yMax += 15; // fullWaveformRect.x = -startOffset * SequenceEditor.PixelsPerFrame; // AudioCurveRendering.DrawMinMaxFilledCurve(fullWaveformRect, delegate (float x, out Color col, out float minValue, out float maxValue) // { // col = new Color(1f, 0.55f, 0f, 1f); // float p = Mathf.Clamp(x * (numSamples - 2), 0.0f, numSamples - 2); // int i = (int)Mathf.Floor(p); // minValue = 10; // maxValue = -10; // for (int channel = 0; channel != numChannels; ++channel) // { // int offset1 = (i * numChannels + channel) * 2; // int offset2 = offset1 + numChannels * 2; // minValue = Mathf.Min(minValue, _clipMinMaxData[offset1 + 1], _clipMinMaxData[offset2 + 1]); // maxValue = Mathf.Max(maxValue, _clipMinMaxData[offset1 + 0], _clipMinMaxData[offset2 + 0]); // if (minValue > maxValue) // { // float tmp = minValue; // minValue = maxValue; // maxValue = tmp; // } // } // }); // GUI.EndClip(); //} }