/// <summary>
/// 部分绘制-波形线密度改变
///
/// </summary>
private void PartDraw_DrawDensityChanged()
{
//全部绘制
Graphics graphics = this._grafx.Graphics;
//清空所有已绘制的图形
graphics.Clear(this.BackColor);
WavePlotPara plotPara = this._plotPara;
IEnumerable <ChannelPlotData> plotDatas = this._plotDatas;
if (plotPara == null)
{
return;
}
//全局视图
this.DrawGlobalView(graphics, plotPara, plotDatas);
this.AddPartRefreshArea(this._globalView);
//波形图
this.DrawWaveSpecturum(graphics, plotPara, plotDatas);
this.AddPartRefreshArea(this._content.Area);
this.RefreshInvalidateArea();
}
/// <summary>
/// 获取指定点所对应在UI中的区域
/// </summary>
/// <param name="point">指定点</param>
/// <param name="plotPara"></param>
/// <param name="selectedInfo"></param>
/// <returns>指定点所对应在UI中的区域</returns>
internal UIArea GetUIArea(Point point, WavePlotPara plotPara, SelectedInfo selectedInfo)
{
if (this.Inner(point, this._globalView))
{
if (plotPara != null)
{
double unitWidth = this._content.Area.Width / plotPara.DurationMillisecond;
double sbx = unitWidth * plotPara.SBTOMillisecond;
double sex = unitWidth * plotPara.GetSETOMillisecond();
if (point.X - sbx > PlotConstant.ZEROR_D && point.X - sex < PlotConstant.ZEROR_D)
{
return(UIArea.GlobalViewZoomDisplay);
}
}
return(UIArea.GlobalView);
}
if (this.Inner(point, this._xAxis))
{
return(UIArea.TimeArea);
}
if (this.Inner(point, this._content))
{
return(UIArea.Wave);
}
return(UIArea.Other);
}
private RectangleF?DrawWaveSpecturum(Graphics graphics, WavePlotPara plotPara, IEnumerable <ChannelPlotData> plotDatas)
{
PlotElementInfoAbs wave = this._content;
if (wave == null)
{
return(null);
}
//填充主波形背景
if (wave.BackgroudColor != null)
{
graphics.FillRectangle(wave.BackgroudColor, wave.Area);
}
if (plotPara == null || plotDatas == null)
{
return(null);
}
double sbto = plotPara.SBTOMillisecond; //显示区域起始时间
double seto = plotPara.GetSETOMillisecond(); //显示区域结束时间
RectangleF?wavSelectedArea = this.GetSelectedAreaBackground(wave.Area, plotPara, sbto, seto);
if (wavSelectedArea.HasValue)
{
//填充主波形选中背景
graphics.FillRectangle(this._seleactionAreaBrush, wavSelectedArea.Value);
}
//绘制波形图
this.DrawWaveDb(graphics, wave, plotPara, plotDatas, false);
return(wavSelectedArea);
}
/// <summary>
/// 全部绘制
/// </summary>
private void AllDraw()
{
if (this._grafx == null)
{
return;
}
//全部绘制
Graphics graphics = this._grafx.Graphics;
////重置平移
//graphics.ResetTransform();
//清空所有已绘制的图形
graphics.Clear(this.BackColor);
WavePlotPara plotPara = this._plotPara;
IEnumerable <ChannelPlotData> plotDatas = this._plotDatas;
if (plotPara == null ||
plotDatas == null ||
(plotDatas != null && plotDatas.Count() == 0))
{
return;
}
this.DrawGlobalView(graphics, plotPara, plotDatas); //绘制全局视图
this.DrawTimeAxis(graphics, plotPara); //绘制X轴
this.DrawWaveSpecturum(graphics, plotPara, plotDatas); //绘制波形图
this.DrawWaveSpecturumAxis(graphics, plotDatas); //绘制Y轴
this.RefreshInvalidateArea(); //刷新
}
//private void CalVoiceSpecturumArea(WavePlotPara plotPara, out int begeinIndex, out int endIndex)
//{
// int frameCount = plotPara.FrameCount;
// begeinIndex = (int)(frameCount * plotPara.SBTOMillisecond / plotPara.DurationMillisecond);
// endIndex = (int)(frameCount * plotPara.GetSETOMillisecond() / plotPara.DurationMillisecond);
// if (begeinIndex < 0)
// {
// int offset = Math.Abs(begeinIndex);
// begeinIndex = 0;
// endIndex += offset;
// if (endIndex > frameCount)
// {
// endIndex = frameCount;
// }
// }
// else
// {
// if (endIndex > frameCount)
// {
// begeinIndex = begeinIndex - (endIndex - frameCount);
// endIndex = frameCount;
// if (begeinIndex < 0)
// {
// begeinIndex = 0;
// }
// }
// }
//}
private void CalWavSpecturumArea(WavePlotPara plotPara, out int begeinIndex, out int endIndex)
{
int sourceFFTDataLength = plotPara.SourcePcmDataLength;
begeinIndex = (int)(sourceFFTDataLength * plotPara.SBTOMillisecond / plotPara.DurationMillisecond);
endIndex = (int)(sourceFFTDataLength * plotPara.GetSETOMillisecond() / plotPara.DurationMillisecond);
if (begeinIndex < 0)
{
int offset = Math.Abs(begeinIndex);
begeinIndex = 0;
endIndex += offset;
if (endIndex > sourceFFTDataLength)
{
endIndex = sourceFFTDataLength;
}
}
else
{
if (endIndex > sourceFFTDataLength)
{
begeinIndex = begeinIndex - (endIndex - sourceFFTDataLength);
endIndex = sourceFFTDataLength;
if (begeinIndex < 0)
{
begeinIndex = 0;
}
}
}
}
private void SizeChangedResample()
{
WavePlotPara plotPara = this._plotPara;
if (plotPara == null)
{
return;
}
int globalViewFFTDataLength = 0;
var fftDatas = this._plotDatas;
if (fftDatas != null)
{
int targetCount = this.GetResamplePointCount();
foreach (ChannelPlotData channelFFTData in fftDatas)
{
if (channelFFTData.PCMData == null)
{
continue;
}
channelFFTData.GlobalViewData = channelFFTData.PrimitiveResample(targetCount, 0, channelFFTData.PCMData.Length);
if (globalViewFFTDataLength == 0 || globalViewFFTDataLength < channelFFTData.GlobalViewData.Length)
{
globalViewFFTDataLength = channelFFTData.GlobalViewData.Length;
}
}
}
plotPara.GlobalViewPcmDataLength = globalViewFFTDataLength;
}
private RectangleF?GetSelectedAreaBackground(RectangleF waveRectangle, WavePlotPara plotPara, double beginMillisecond, double endMillisecond)
{
if (this._selectedInfo == null)
{
return(null);
}
double sb = this._selectedInfo.BeginMillisecond; //选中区域起始时间
double se = this._selectedInfo.EndMillisecond; //选中区域结束时间
if (se - sb <= PlotConstant.ZEROR_D)
{
//至少选中,如果没有选中区域,则不需要绘制该区域背景
return(null);
}
/*******************************************************************************************
* 选中与显示有以下五种场景,分别为ABCDE:
* A B C D E
* |+++++++| |+++++++++| |+++++++++| |+++++++++| |+++++++++|
* |-----|-------|--|--|------|-----|---------|-------|---|-----|-----|---------|
* |-------------------|----------------------------------|-----------------------|
* 0 sbto seto end
*******************************************************************************************/
if (se - beginMillisecond < PlotConstant.ZEROR_D ||
sb - endMillisecond > PlotConstant.ZEROR_D)
{
//场景A和E
return(null);
}
float x1;
if (sb - beginMillisecond < PlotConstant.ZEROR_D)
{
//场景B
x1 = 0f;
}
else
{
//场景C或D
x1 = waveRectangle.X + (float)((waveRectangle.Width / (endMillisecond - beginMillisecond)) * (sb - beginMillisecond));
}
float x2;
if (sb - endMillisecond > PlotConstant.ZEROR_D)
{
//场景D
x2 = waveRectangle.X + waveRectangle.Width;
}
else
{
//场景A或B
x2 = waveRectangle.X + (float)((waveRectangle.Width / (endMillisecond - beginMillisecond)) * (se - beginMillisecond));
}
return(new RectangleF(x1, waveRectangle.Y, x2 - x1, waveRectangle.Height));
}
/// <summary>
///
/// </summary>
/// <param name="graphics"></param>
/// <param name="wave"></param>
/// <param name="plotPara"></param>
/// <param name="pcmDatas"></param>
/// <param name="dataType">true:GlobalViewData;alse:DrawData</param>
private void DrawWave_A(Graphics graphics, PlotElementInfoAbs wave, WavePlotPara plotPara, IEnumerable <ChannelPlotData> pcmDatas, bool dataType)
{
PointF[] points;
if (dataType)
{
points = new PointF[plotPara.GlobalViewPcmDataLength];
}
else
{
points = new PointF[plotPara.DrawPcmDataLength];
}
if (points.Length == 0)
{
return;
}
int channeCount = pcmDatas.Count();
float channelWaveAreaHeight = wave.Area.Height / channeCount;
float channelWaveHalfHeight = channelWaveAreaHeight / 2;
float separatorY = wave.Area.Y + channelWaveHalfHeight;
float lx, y;
bool drawSeparator = false;
short[] pcmData;
float xStep = this.CalXStep(points.Length);
foreach (ChannelPlotData channelPlotData in pcmDatas)
{
if (drawSeparator)
{
graphics.DrawLine(this._channelSeparatorPen, 0f, separatorY, wave.Area.Width, separatorY);
}
if (dataType)
{
pcmData = channelPlotData.GlobalViewData;
}
else
{
pcmData = channelPlotData.DrawData;
}
lx = 0f;
for (int i = 0; i < points.Length && i < pcmData.Length; i++)
{
y = separatorY - ((float)pcmData[i] / short.MaxValue) * channelWaveHalfHeight;
points[i] = new PointF(lx, y);
lx = lx + xStep;
}
graphics.DrawLines(wave.Pen, points);
separatorY += channelWaveAreaHeight;
drawSeparator = true;
}
}
private void Resample()
{
WavePlotPara plotPara = this._plotPara;
if (plotPara == null)
{
return;
}
//计算重采样数据起始-结束索引
int wavBegeinIndex, wavEndIndex;
this.CalWavSpecturumArea(plotPara, out wavBegeinIndex, out wavEndIndex);
//int voiceBegeinIndex, voiceEndIndex;
//this.CalVoiceSpecturumArea(plotPara, out voiceBegeinIndex, out voiceEndIndex);
//重采样
int srcFFTDataLength = 0, drawFFTDataLength = 0;
var fftDatas = this._plotDatas;
if (fftDatas != null)
{
int resampleTargetCount = this.GetResamplePointCount();
foreach (ChannelPlotData channelFFTData in fftDatas)
{
if (channelFFTData.PCMData == null)
{
continue;
}
if (srcFFTDataLength == 0)
{
srcFFTDataLength = channelFFTData.PCMData.Length;
}
else
{
if (srcFFTDataLength != channelFFTData.PCMData.Length)
{
throw new ArgumentException("FFT数据长度不一致");
}
}
channelFFTData.Resample(resampleTargetCount, wavBegeinIndex, wavEndIndex);
//channelFFTData.GlobalViewData = channelFFTData.DrawData;
if (drawFFTDataLength < channelFFTData.DrawData.Length)
{
drawFFTDataLength = channelFFTData.DrawData.Length;
}
}
}
plotPara.DrawPcmDataLength = drawFFTDataLength;
}
private void UpdatePlotPara(WavePlotPara plotPara)
{
double setoMillisecond = plotPara.GetSETOMillisecond();
double middle = plotPara.SBTOMillisecond + (setoMillisecond - plotPara.SBTOMillisecond) / 2;
double showAreaMillisecond = plotPara.DurationMillisecond / this._zoomMultiple;
double showAreaHalfMillisecond = showAreaMillisecond / 2;
plotPara.SBTOMillisecond = middle - showAreaHalfMillisecond;
plotPara.UpdateSETOMillisecond(middle + showAreaHalfMillisecond);
}
/// <summary>
/// 放大
/// </summary>
/// <param name="plotPara"></param>
/// <param name="minPointCount">图上最少点数</param>
internal void ZoomIn(WavePlotPara plotPara, uint minPointCount = 5)
{
if (plotPara.SourcePcmDataLength / this._zoomMultiple <= minPointCount)
{
return;
}
this._zoomMultiple *= 2;
this.UpdatePlotPara(plotPara);
}
private void SelectedAreaChangeDraw(SelectedInfo oldSelectedInfo)
{
//全部绘制
Graphics graphics = this._grafx.Graphics;
//重置平移
graphics.ResetTransform();
//清空所有已绘制的图形
//graphics.Clear(this.BackColor);
WavePlotPara plotPara = this._plotPara;
IEnumerable <ChannelPlotData> plotDatas = this._plotDatas;
if (plotPara == null)
{
return;
}
if (oldSelectedInfo != null)
{
this.AddPartRefreshArea(oldSelectedInfo.LastGlobalViewSelectedArea);
this.AddPartRefreshArea(oldSelectedInfo.LastWaveSelectedArea);
}
SelectedInfo selectedInfo = this._selectedInfo;
RectangleF? selectedArea;
//理论上选择区域改变,是不需要重新绘制时间的,但是在某种情况下,时间时间区域会消失,只好重绘,以后如果找到原因了,再删除这个case内的代码
this.DrawTimeAxis(graphics, plotPara);
this.AddPartRefreshArea(this._xAxis);
selectedArea = this.DrawGlobalView(graphics, plotPara, plotDatas);
this.AddPartRefreshArea(selectedArea);
if (selectedInfo != null)
{
selectedInfo.LastGlobalViewSelectedArea = selectedArea;
}
selectedArea = this.DrawWaveSpecturum(graphics, plotPara, plotDatas);
this.AddPartRefreshArea(selectedArea);
if (selectedInfo != null)
{
selectedInfo.LastWaveSelectedArea = selectedArea;
}
this.RefreshInvalidateArea();
}
/// <summary>
/// 清除
/// </summary>
public void Clear()
{
this._plotDatas = null;
this._plotPara = null;
//全部绘制
Graphics graphics = this._grafx.Graphics;
//清空所有已绘制的图形
graphics.Clear(this.BackColor);
this.RefreshInvalidateArea();//刷新
}
private RectangleF?DrawGlobalView(Graphics graphics, WavePlotPara plotPara, IEnumerable <ChannelPlotData> plotDatas)
{
GlobalViewPlotElementInfo globalView = this._globalView;
if (globalView == null)
{
return(null);
}
//填充整体视图波形背景
if (globalView.BackgroudColor != null)
{
graphics.FillRectangle(globalView.BackgroudColor, globalView.Area);
}
if (plotDatas == null)
{
return(null);
}
//整体视图中缩放后显示区域
RectangleF?globalViewZoomArea = null;
if (this._zoomInfo.HasZoom())
{
float x1 = (float)(globalView.Area.Width * plotPara.SBTOMillisecond / plotPara.DurationMillisecond);
float x2 = (float)(globalView.Area.Width * plotPara.GetSETOMillisecond() / plotPara.DurationMillisecond);
globalViewZoomArea = new RectangleF(x1, globalView.Area.Y, x2 - x1, globalView.Area.Height);
graphics.FillRectangle(globalView.GlobalViewZoomAreaBackBrush, globalViewZoomArea.Value);
}
RectangleF?wavSelectedArea = this.GetSelectedAreaBackground(globalView.Area, plotPara, PlotConstant.ZEROR_D, plotPara.DurationMillisecond);
if (wavSelectedArea.HasValue)
{
//填充选中背景
graphics.FillRectangle(this._seleactionGlobalViewAreaBrush, wavSelectedArea.Value);
}
//绘制整体视图波形
this.DrawWaveDb(graphics, globalView, plotPara, plotDatas, true);
if (globalViewZoomArea.HasValue)
{
this.DrawDisplayAreaStyle(globalView, graphics, globalViewZoomArea.Value);
}
return(wavSelectedArea);
}
/// <summary>
///
/// </summary>
/// <param name="fftDatas">
/// 声道数据集合
/// 单声道:L
/// 双声道:L-R
/// 四声道:L-R-LS-RS
/// 5.1声道FFT数据顺序: L-R-C-LFE-LS-RS
/// 7.1声道FFT数据顺序: L-R-C-LFE-LS-RS-不晓得了
/// </param>
/// <param name="plotPara">绘图参数</param>
public void UpdateData(IEnumerable <ChannelPlotData> fftDatas, WavePlotPara plotPara)
{
if (plotPara == null)
{
throw new ArgumentNullException(nameof(plotPara));
}
this._plotPara = plotPara;
int srcPcmMaxDataLength = 0, drawPcmMaxDataLength = 0;
if (fftDatas != null)
{
int targetCount = this.GetResamplePointCount();
foreach (ChannelPlotData channelFFTData in fftDatas)
{
if (channelFFTData == null || channelFFTData.PCMData == null)
{
continue;
}
if (srcPcmMaxDataLength == 0)
{
srcPcmMaxDataLength = channelFFTData.PCMData.Length;
}
else
{
if (srcPcmMaxDataLength != channelFFTData.PCMData.Length)
{
throw new ArgumentException("FFT数据长度不一致");
}
}
channelFFTData.Resample(targetCount, 0, channelFFTData.PCMData.Length);
channelFFTData.GlobalViewData = channelFFTData.DrawData;
if (drawPcmMaxDataLength < channelFFTData.DrawData.Length)
{
drawPcmMaxDataLength = channelFFTData.DrawData.Length;
}
}
}
this._plotDatas = fftDatas;
plotPara.SourcePcmDataLength = srcPcmMaxDataLength;
plotPara.DrawPcmDataLength = drawPcmMaxDataLength;
plotPara.GlobalViewPcmDataLength = drawPcmMaxDataLength;
this.AllDraw();
}
/// <summary>
/// 缩小
/// </summary>
internal void ZoomOut(WavePlotPara plotPara)
{
if (this._zoomMultiple <= _NONE)
{
return;
}
this._zoomMultiple /= 2;
if (this._zoomMultiple <= _NONE)
{
plotPara.SBTOMillisecond = PlotConstant.ZEROR_D;
plotPara.UpdateSETOMillisecond(PlotConstant.ZEROR_D);
return;
}
this.UpdatePlotPara(plotPara);
}
/// <summary>
/// 完整绘制:整体视图-时间线-波形图
/// 用于缩放-平移场景
/// </summary>
private void PartDraw_ZoomMove()
{
//完整绘制:整体视图-时间线-波形图
//全部绘制
Graphics graphics = this._grafx.Graphics;
//清空所有已绘制的图形
graphics.Clear(this.BackColor);
WavePlotPara plotPara = this._plotPara;
IEnumerable <ChannelPlotData> plotDatas = this._plotDatas;
if (plotPara == null)
{
return;
}
RectangleF? selectedArea;
SelectedInfo selectedInfo = this._selectedInfo;
selectedArea = this.DrawGlobalView(graphics, plotPara, plotDatas);
this.AddPartRefreshArea(this._globalView);
if (selectedInfo != null)
{
selectedInfo.LastGlobalViewSelectedArea = selectedArea;
}
this.DrawTimeAxis(graphics, plotPara);
this.AddPartRefreshArea(this._xAxis);
selectedArea = this.DrawWaveSpecturum(graphics, plotPara, plotDatas);
if (selectedInfo != null)
{
selectedInfo.LastWaveSelectedArea = selectedArea;
}
this.AddPartRefreshArea(this._content);
this.RefreshInvalidateArea();
}
/// <summary>
///
/// </summary>
/// <param name="plotPara">绘图参数</param>
/// <param name="pcmData">pcm数据</param>
public void UpdateData(WavePlotPara plotPara, short[] pcmData)
{
this.UpdateData(new ChannelPlotData[] { new ChannelPlotData(pcmData, null) }, plotPara);
}
private void DrawTimeAxis(Graphics graphics, WavePlotPara plotPara)
{
XAxisPlotElementInfo axisX = this._xAxis;
if (axisX == null)
{
return;
}
//时间图背景
RectangleF rectangleTimeArea = axisX.Area;
graphics.FillRectangle(axisX.BackgroudColor, rectangleTimeArea);
if (plotPara == null)
{
return;
}
//边框
//graphics.DrawLine(this._borderPen, rectangleTimeArea.X, rectangleTimeArea.Y, rectangleTimeArea.X, rectangleTimeArea.Y + rectangleTimeArea.Height);
//float borderX = rectangleTimeArea.X + rectangleTimeArea.Width - this._borderPen.Width;
//graphics.DrawLine(this._borderPen, borderX, rectangleTimeArea.Y, borderX, rectangleTimeArea.Y + rectangleTimeArea.Height);
//graphics.DrawLine(this._borderPen, rectangleTimeArea.X, rectangleTimeArea.Y, rectangleTimeArea.X + rectangleTimeArea.Width, rectangleTimeArea.Y);
//绘制起始时间-毫秒
double beginTimeMillisecond = plotPara.SBTOMillisecond;
//绘制结束时间-毫秒
double endTimeMillisecond = plotPara.GetSETOMillisecond();
//绘制总时长
double durationTimeMillisecond = endTimeMillisecond - beginTimeMillisecond;
if (durationTimeMillisecond <= 0d)
{
return;
}
//绘制时间间隔
double separatorSecond = this.CalSegDurationSecond(axisX, graphics, durationTimeMillisecond);
//绘制起始时间-秒
double beginTimeSecond = beginTimeMillisecond / 1000;
//绘制时间-秒
double timeSecond = PlotConstant.ZEROR_D;
if (beginTimeMillisecond > PlotConstant.ZEROR_D)
{
int mult = (int)(beginTimeSecond / separatorSecond);
double mod = beginTimeSecond % separatorSecond;
if (mod - separatorSecond < PlotConstant.ZEROR_D)
{
mult = mult + 1;
}
timeSecond = separatorSecond * mult;
}
//绘制时间
DateTime time = plotPara.BaseTime.AddSeconds(timeSecond);
DateTime endTime = plotPara.BaseTime.AddMilliseconds(endTimeMillisecond);
float labelHeight = rectangleTimeArea.Height / 3;
float y1 = rectangleTimeArea.Y + rectangleTimeArea.Height;
float y2 = y1 - labelHeight;
float y3 = y1 - labelHeight / 2;
float labelX, labelSmallX;
double separatorSecondHalf = separatorSecond / 2;
float secondLength = (float)(axisX.Area.Width / (durationTimeMillisecond / 1000));
string labelText;
SizeF labelTextSize;
float labelTextX, lastLabelTextRightX = 0f;
float labelTextY = rectangleTimeArea.Y + labelHeight / 2;
AxisLabelLocation labelTextLocation = AxisLabelLocation.First;
var contentWidth = axisX.Area.Width;
Pen pen = axisX.Pen;
while (true)
{
//刻度-x
labelX = (float)(secondLength * (timeSecond - beginTimeSecond));
labelSmallX = (float)(secondLength * (timeSecond - beginTimeSecond - separatorSecondHalf));
//绘制刻度文本
labelText = this.GetLabelText(time, separatorSecond);
labelTextSize = graphics.MeasureString(labelText, axisX.Font);
labelTextX = labelX - labelTextSize.Width / 2;
switch (labelTextLocation)
{
case AxisLabelLocation.First:
if (labelTextX < PlotConstant.ZEROR_D && beginTimeMillisecond <= PlotConstant.ZEROR_D)
{
labelTextX = (float)PlotConstant.ZEROR_D;
}
labelTextLocation = AxisLabelLocation.Middle;
break;
case AxisLabelLocation.Middle:
if (labelTextX + labelTextSize.Width - contentWidth > PlotConstant.ZEROR_D)
{
labelTextX = contentWidth - labelTextSize.Width;
}
break;
case AxisLabelLocation.Last:
if (labelTextX + labelTextSize.Width - contentWidth > PlotConstant.ZEROR_D)
{
labelTextX = contentWidth - labelTextSize.Width;
if (labelTextX - lastLabelTextRightX < PlotConstant.ZEROR_D)
{
if (labelSmallX - contentWidth < PlotConstant.ZEROR_D)
{
graphics.DrawLine(pen, labelSmallX, y1, labelSmallX, y3);
}
return;
}
}
break;
default:
throw new NotImplementedException();
}
graphics.DrawString(labelText, axisX.Font, axisX.ForeColor, labelTextX, labelTextY);
lastLabelTextRightX = labelTextX + labelTextSize.Width;
//绘制刻度
if (labelSmallX > PlotConstant.ZEROR_D)
{
graphics.DrawLine(pen, labelSmallX, y1, labelSmallX, y3);
}
if (labelX - contentWidth < PlotConstant.ZEROR_D)
{
graphics.DrawLine(pen, labelX, y1, labelX, y2);
}
if (labelTextLocation == AxisLabelLocation.Last)
{
break;
}
timeSecond += separatorSecond;
time = plotPara.BaseTime.AddSeconds(timeSecond);
if (time >= endTime)
{
time = endTime;
labelTextLocation = AxisLabelLocation.Last;
}
}
}
/// <summary>
///
/// </summary>
/// <param name="graphics"></param>
/// <param name="wave"></param>
/// <param name="plotPara"></param>
/// <param name="pcmDatas"></param>
/// <param name="dataType">true:GlobalViewData;alse:DrawData</param>
private void DrawWaveDb(Graphics graphics, PlotElementInfoAbs wave, WavePlotPara plotPara, IEnumerable <ChannelPlotData> pcmDatas, bool dataType)
{
PointF[] points;
if (dataType)
{
points = new PointF[plotPara.GlobalViewPcmDataLength];
}
else
{
points = new PointF[plotPara.DrawPcmDataLength];
}
if (points.Length == 0)
{
return;
}
int channeCount = pcmDatas.Count();
float channelWaveAreaHeight = wave.Area.Height / channeCount;
float channelWaveHalfHeight = channelWaveAreaHeight / 2;
float separatorY = wave.Area.Y + channelWaveHalfHeight;
float lx, y;
bool drawSeparator = false;
//float value;
//float db;
short[] pcmData;
//bool negativePoint;
float xStep = this.CalXStep(points.Length);
////const float DB_MAX = 10.397177190355384f; // = Math.Log(short.MaxValue);
//const float DB_MAX = 4.5154366811416988f; // = Math.Log10(short.MaxValue);
foreach (ChannelPlotData channelPlotData in pcmDatas)
{
if (drawSeparator)
{
graphics.DrawLine(this._channelSeparatorPen, 0f, separatorY, wave.Area.Width, separatorY);
}
if (dataType)
{
pcmData = channelPlotData.GlobalViewData;
}
else
{
pcmData = channelPlotData.DrawData;
}
lx = 0f;
//float minY = 0f, maxY = 0f;
//float dbMin = 0f, dbMax = 0f;
for (int i = 0; i < points.Length && i < pcmData.Length; i++)
{
y = separatorY - ((float)pcmData[i] / short.MaxValue) * channelWaveHalfHeight;
//转分呗后画出的波形似乎不太对啊
//if (pcmData[i] == 0)
//{
// y = separatorY;
//}
//else
//{
// value = (float)pcmData[i];
// if (value < 0)
// {
// negativePoint = true;
// value = Math.Abs(value);
// }
// else
// {
// negativePoint = false;
// }
// //dB = 20 * log(A1 / A2) => db = log(A)
// //value = 20 * (float)(Math.Log10(value / short.MaxValue));
// //db = (float)(Math.Log(value));
// db = (float)(Math.Log10(value));
// if (db < dbMin)
// {
// dbMin = db;
// }
// if (db > dbMax)
// {
// dbMax = db;
// }
// if (negativePoint)
// {
// y = separatorY + channelWaveHalfHeight * db / DB_MAX;
// }
// else
// {
// y = separatorY - channelWaveHalfHeight * db / DB_MAX;
// }
// if (y < minY)
// {
// minY = y;
// }
// if (y > maxY)
// {
// maxY = y;
// }
//}
points[i] = new PointF(lx, y);
lx = lx + xStep;
}
graphics.DrawLines(wave.Pen, points);
separatorY += channelWaveAreaHeight;
drawSeparator = true;
}
}
/// <summary>
/// 更新播放位置指示线
/// </summary>
/// <param name="plotPara"></param>
/// <param name="offsetTimeMilliseconds">播放时间</param>
private void PrimitiveUpdatePostionLine(WavePlotPara plotPara, double offsetTimeMilliseconds)
{
if (!this._playPositionLine)
{
return;
}
this.AddPartRefreshArea(this._globalViewLastPlayPositionLineArea);
this.AddPartRefreshArea(this._waveLastPlayPositionLineArea);
//全部绘制
Graphics graphics = this._grafx.Graphics;
IEnumerable <ChannelPlotData> plotDatas = this._plotDatas;
//全局视图
this.DrawGlobalView(graphics, plotPara, plotDatas);
//波形图
this.DrawWaveSpecturum(graphics, plotPara, plotDatas);
ContentPlotElementInfo content = this._content;
float maxX = content.Area.X + content.Area.Width;
const int OFFSET1 = 1;
const int OFFSET2 = 2;
//缩略波形图播放位置指示线
var globalView = this._globalView;
if (globalView != null)
{
float globalViewX = (float)(content.Area.Width * offsetTimeMilliseconds / plotPara.DurationMillisecond);
if (globalViewX + globalView.PlayLineChannelPen.Width < maxX)
{
PointF zoomP1 = new PointF(globalViewX, globalView.Area.Y);
PointF zoomP2 = new PointF(globalViewX, globalView.Area.Y + globalView.Area.Height);
graphics.DrawLine(globalView.PlayLineChannelPen, zoomP1, zoomP2);
this._globalViewLastPlayPositionLineArea = new RectangleF(globalViewX - OFFSET1, globalView.Area.Y - OFFSET1, globalView.PlayLineChannelPen.Width + OFFSET2, globalView.Area.Height + OFFSET2);
this.AddPartRefreshArea(this._globalViewLastPlayPositionLineArea);
}
}
else
{
this._globalViewLastPlayPositionLineArea = null;
}
//主波形图播放位置指示线
double sbto = plotPara.SBTOMillisecond;
double seto = plotPara.GetSETOMillisecond();
double timeArea = seto - sbto;
float contentX = (float)(content.Area.Width * (offsetTimeMilliseconds - sbto) / timeArea);
bool drawWavePlayLine = plotPara.ContainsShowTime(offsetTimeMilliseconds);
if (drawWavePlayLine && contentX > PlotConstant.ZEROR_D && this.Width - contentX > PlotConstant.ZEROR_D)
{
if (contentX + content.PlayLineChannelPen.Width - maxX < PlotConstant.ZEROR_D)
{
var contentArea = content.Area;
PointF wavP1 = new PointF(contentX, contentArea.Y);
PointF wavP2 = new PointF(contentX, contentArea.Y + contentArea.Height);
graphics.DrawLine(content.PlayLineChannelPen, wavP1, wavP2);
this._waveLastPlayPositionLineArea = new RectangleF(contentX - OFFSET1, contentArea.Y - OFFSET1, content.PlayLineChannelPen.Width + OFFSET2, contentArea.Height + OFFSET2);
this.AddPartRefreshArea(this._waveLastPlayPositionLineArea);
}
}
else
{
this._waveLastPlayPositionLineArea = null;
}
this.RefreshInvalidateArea();
}
