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>
/// 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);
}