private void SetAreaType(PlotElementInfoAbs plotElementInfo, AreaType areaType)
{
if (plotElementInfo != null)
{
plotElementInfo.AreaType = areaType;
}
}
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>
/// 添加局部刷新区域[添加成功返回true,失败返回false]
/// </summary>
/// <param name="plotElementInfo">需要局部刷新的矩形区域</param>
private void AddPartRefreshArea(PlotElementInfoAbs plotElementInfo)
{
if (plotElementInfo == null)
{
return;
}
this.AddPartRefreshArea(plotElementInfo.Area);
}
/// <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 bool Inner(Point point, PlotElementInfoAbs plotElementInfo)
{
if (plotElementInfo == null)
{
return(false);
}
if (point.Y <= plotElementInfo.Area.Bottom && point.Y >= plotElementInfo.Area.Top && point.X >= plotElementInfo.Area.Left && point.X <= plotElementInfo.Area.Right)
{
return(true);
}
return(false);
}
/// <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;
}
}