private void LoadData(C3DFile file, Int32 cid)
{
if (file == null)
{
return;
}
C3DParameterCache cache = C3DParameterCache.CreateCache(file);
C3DHeaderEvent[] events = file.Header.GetAllHeaderEvents();
UInt16 firstFrameIndex = file.Header.FirstFrameIndex;
UInt16 lastFrameIndex = file.Header.LastFrameIndex;
UInt16 samplePerFrame = cache.AnalogSamplesPerFrame;
this._points = new Dictionary <Single, Single>();
this._status = new ChartScaleStatus(firstFrameIndex, lastFrameIndex, Single.MaxValue, Single.MinValue);
for (Int32 i = 0; i < samplePerFrame; i++)
{
this.lvItems.Columns.Add(new ColumnHeader()
{
Text = String.Format("SP {0}", (i + 1).ToString()), Width = 70
});
}
for (Int32 i = 0; i < file.AllFrames.Count; i++)
{
Int32 index = firstFrameIndex + i;
C3DAnalogSamples point3D = file.AllFrames[i].AnalogSamples[cid];
for (Int32 j = 0; j < point3D.SampleCount; j++)
{
this._points[index + (Single)(j) / (Single)(point3D.SampleCount)] = point3D[j];
this._status.Mins[1] = Math.Min(this._status.Mins[1], point3D[j]);
this._status.Maxs[1] = Math.Max(this._status.Maxs[1], point3D[j]);
}
String[] item = new String[file.AllFrames[i].AnalogSamples[cid].SampleCount + 1];
item[0] = (file.Header.FirstFrameIndex + i).ToString();
for (Int32 j = 1; j < item.Length; j++)
{
item[j] = point3D[j - 1].ToString("F3");
}
this.lvItems.Items.Add(new ListViewItem(item));
}
this._status.Maxs[0] = (this._status.Maxs[0] == this._status.Mins[0] ? this._status.Maxs[0] + 1 : this._status.Maxs[0]);
this._status.Maxs[1] = (this._status.Maxs[1] == this._status.Mins[1] ? this._status.Maxs[1] + 1 : this._status.Maxs[1]);
ChartBindingHelper.BindDataToChart <Single, Single>(this.chartView, this._points, this._status.Mins[0], this._status.Maxs[0], this._status.Mins[1], this._status.Maxs[1]);
this.ShowStripLine(events, cache.FrameRate);
this.SetMarker();
}
/// <summary>
/// 缩放图表
/// </summary>
/// <param name="chart">图表控件</param>
/// <param name="status">图表状态</param>
/// <param name="type">轴类型(0为X轴,1为Y轴)</param>
/// <param name="scale">缩放等级</param>
internal static void ZoomChart(Chart chart, ChartScaleStatus status, Byte type, Int32 scale)
{
Axis axis = (type == 0 ? chart.ChartAreas[0].AxisX : chart.ChartAreas[0].AxisY);
Int32 newScale = status.Scales[type] + scale;
if (scale == 0 || newScale == 0)//重置
{
axis.Maximum = status.Maxs[type];
axis.Minimum = status.Mins[type];
axis.ScaleView.ZoomReset(0);
status.Scales[type] = 0;
}
else
{
if (newScale > 0)//图表区域小于显示区域
{
Double diff = status.Maxs[type] - status.Mins[type];
axis.Maximum = status.Maxs[type] + diff * 0.1 * Math.Pow(1.5, newScale);
axis.Minimum = status.Mins[type] - diff * 0.1 * Math.Pow(1.5, newScale);
}
else if (newScale < 0 && scale < 0)//图表区域大于显示区域 放大
{
Double diff = axis.ScaleView.ViewMaximum - axis.ScaleView.ViewMinimum;
Double vMin = axis.ScaleView.ViewMinimum + diff * 0.1 * (1.0 + Math.Pow(1.5, newScale));
Double vMax = axis.ScaleView.ViewMaximum - diff * 0.1 * (1.0 + Math.Pow(1.5, newScale));
if (vMin >= vMax)
{
return;
}
axis.ScaleView.Zoom(vMin, vMax - vMin, DateTimeIntervalType.Number, true);
}
else if (newScale < 0 && scale > 0)//图表区域大于显示区域 缩小
{
axis.ScaleView.ZoomReset();
}
status.Scales[type] = newScale;
}
}
