/// <summary>
/// 根据偏差移动绘图区
/// </summary>
/// <param name="offect"></param>
/// <returns></returns>
public bool MoveDrawLinesAndPoints(Point offset)
{
if (Math.Pow(offset.X, 2) + Math.Pow(offset.Y, 2) < 3 * 3)
{
return(false);
}
centerOffect.Vect1 += offset.X;
centerOffect.Vect2 += offset.Y;
VectorChart2 offectValue = GetOffectValue(centerOffect);
if (xExtremeValue.Vect1 + offectValue.Vect1 <= ScaleLimt.Vect1 || xExtremeValue.Vect2 + offectValue.Vect1 >= ScaleLimt.Vect2 || yExtremeValue.Vect1 + offectValue.Vect2 <= ScaleLimt.Vect3 || yExtremeValue.Vect2 + offectValue.Vect2 >= ScaleLimt.Vect4)
{
centerOffect.Vect1 -= offset.X;
centerOffect.Vect2 -= offset.Y;
return(false);
}
Point curp = new Point(Canvas.GetLeft(DrawLineAndPoint), Draw.Height - Canvas.GetBottom(DrawLineAndPoint));
curp.X += offset.X;
curp.Y += offset.Y;
Canvas.SetLeft(DrawLineAndPoint, curp.X);
Canvas.SetBottom(DrawLineAndPoint, Draw.Height - curp.Y);
AdjustLines();
return(true);
}
protected void AppendData(VectorChart2 selectedData)
{
if (SourceData.Count > 0)
{
this.AppendData(this.GenerateDrawData(selectedData), brush, 1, 1);
}
}
public void OnPassValues(object sender, PassValuesEventArgs e)
{
SelectedData = e.vect;
if (this.SelectedData.Vect1 != SelectedData.Vect2)
{
this.AppendData();
}
//NOTICE: values are passed here
}
/// <summary>
/// 调整曲线 刻度(直接修改)
/// </summary>
protected void AdjustLines()
{
if (!(xTip.Count >= 1 && yTip.Count >= 1))
{
return;
}
double xeveryone = (xExtremeValue.Vect2 - xExtremeValue.Vect1) / (xTip.Count - 1);
double yeveryone = (yExtremeValue.Vect2 - yExtremeValue.Vect1) / (yTip.Count - 1);
if (Draw.Width > 0)
{
double xSize = xExtremeValue.Vect2 - xExtremeValue.Vect1;
//everyDisForPiexl.Vect1 = xSize / Draw.Width;
if (everyDisForPiexl.Vect1 < 1)
{
everyDisForPiexl.Vect1 = 1;
}
//XSkipOffset = Draw.Width/20;
}
if (Draw.Height > 0)
{
double ySize = yExtremeValue.Vect2 - yExtremeValue.Vect1;
// everyDisForPiexl.Vect2 = ySize / Draw.Height;
if (everyDisForPiexl.Vect2 < 1)
{
everyDisForPiexl.Vect2 = 1;
}
//YSkipOffset = Draw.Height/20;
}
double cur = 0;
///计算偏移量
VectorChart2 offect = GetOffectValue(centerOffect);
foreach (var item in xTip)
{
//item.Text = (cur * everyDisForPiexl.Vect1 + offect.Vect1).ToString("0.00");
//item.Text = (((int)item.GetValue(Canvas.LeftProperty) - origPoint.X) * everyDisForPiexl.Vect1 + offect.Vect1).ToString("0.0");
cur++;
}
cur = 0;
foreach (var item in yTip)
{
//item.Text = (cur * everyDisForPiexl.Vect2 + offect.Vect2).ToString("0.00");
//item.Text = (((int)item.GetValue(Canvas.BottomProperty) - origPoint.Y) * everyDisForPiexl.Vect2 + offect.Vect2).ToString("0.0");
cur++;
}
}
private List <Point> GenerateDrawData(VectorChart2 selectedData)
{
if (filteredData.Count > 0)
{
filteredData.Clear();
}
int begin = (int)this.SelectedData.Vect1;
int end = (int)this.SelectedData.Vect2;
int length = (end - begin) / 256;
float min = 0, max = 0;
float frequency;
//MFCC mfcc = new MFCC();
float[][] results = new float[length][];
MFCC mfcc = new MFCC(44100, 512, 512, 0, 4000, 24, 12);
float[] frames = new float[512];
for (int i = begin; i <= end - 512; i += 256)
{
for (int j = 0; j < 512; j++)
{
frames[j] = (float)this.SourceData[i + j];
}
float[] r = mfcc.ProcessFrame(frames);
//min = r.Min();
//max = r.Max();
//rMin = rMin < min ? rMin : min;
//rMax = rMax > max ? rMax : max;
results[i / 256] = r;
for (int j = 0; j < 256; j++)
{
frequency = results[i][j];
if (frequency < FrequencyMax)
{
filteredData.Add(new Point(i, j));
}
}
}
return(filteredData);
}
///// <summary>
///// 渲染事件
///// </summary>
///// <param name="drawingContext"></param>
//protected override void OnRender(DrawingContext drawingContext)
//{
// base.OnRender(drawingContext);
//}
/// <summary>
/// 加载事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MyChart_Loaded(object sender, RoutedEventArgs e)
{
var layer = AdornerLayer.GetAdornerLayer(DrawLineAndPoint);
//foreach (UIElement ui in DrawLineAndPoint.Children)
layer.Add(new ResizeAdorner(ResizableRect));
this.xExtremeValue.Vect1 = 0;
this.xExtremeValue.Vect2 = SourceData.Count;
this.yExtremeValue.Vect1 = SourceData.Min();
this.yExtremeValue.Vect2 = SourceData.Max();
double xx = this.xExtremeValue.Vect2 - this.xExtremeValue.Vect1;
double yy = this.yExtremeValue.Vect2 - this.yExtremeValue.Vect1 + 50000;
this.everyDisForPiexl = new VectorChart2(xx / DrawLineAndPoint.Width, yy / DrawLineAndPoint.Height);
Point p = ResizableRect.TranslatePoint(o, DrawLineAndPoint);
SelectedData.Vect1 = p.X * this.everyDisForPiexl.Vect1;
SelectedData.Vect2 = (p.X + this.ResizableRect.Width) * this.everyDisForPiexl.Vect1;
this.AppendData(SourceData);
}
private List <Point> GenerateDrawData(VectorChart2 selectedData)
{
this.xExtremeValue.Vect1 = SelectedData.Vect1;
this.xExtremeValue.Vect2 = SelectedData.Vect2;
this.everyDisForPiexl.Vect1 = (this.xExtremeValue.Vect2 - this.xExtremeValue.Vect1) / DrawLineAndPoint.Width;
this.everyDisForPiexl.Vect2 = (this.yExtremeValue.Vect2 - this.yExtremeValue.Vect1) / DrawLineAndPoint.Height;
if (filteredData.Count > 0)
{
filteredData.Clear();
}
int offset = (int)(this.everyDisForPiexl.Vect1 / 2);
offset = offset > 1 ? offset : 1;
for (int i = (int)SelectedData.Vect1; i < SelectedData.Vect2; i += offset)
{
filteredData.Add(new Point(i, SourceData[i]));
}
//int start = (int)(SelectedData.Vect1);
//int end =(int)(SelectedData.Vect2);
//int datacount = end-start + 1;
//double sum = 0;
//int count = 0;
//double everage = 0;
//for (int i = start; i <= end; i++)
//{
// count++;
// sum += SourceData[i];
// if (i > 0 && i % offset == 0)
// {
// everage = sum / count;
// count = 0;
// sum = 0;
// filteredData.Add(new Point(i, everage));
// everage = 0;
// }
//}
return(filteredData);
}
/// <summary>
/// 鼠标滚轮事件
/// </summary>
/// <param name="e"></param>
protected override void OnMouseWheel(MouseWheelEventArgs e)
{
base.OnMouseWheel(e);
VectorChart2 curPDraw = (VectorChart2)e.GetPosition(Draw);
VectorChart2 curPLinesAndPoint = (VectorChart2)e.GetPosition(DrawLineAndPoint);
double delta = 1;
if (e.Delta >= 120)
{
delta = 1.2;
}
else if (e.Delta <= -120)
{
delta = (double)5 / (double)6;
}
if (IsXZoom)
{
DrawLineAndPoint.Width *= delta;
curPDraw.Vect1 *= delta;
curPLinesAndPoint.Vect1 *= delta;
}
if (IsYZoom)
{
DrawLineAndPoint.Height *= delta;
curPDraw.Vect2 *= delta;
curPLinesAndPoint.Vect2 *= delta;
}
currentLinesScale.Vect4 *= delta;
//Canvas.SetLeft(DrawLineAndPoint, curPDraw.Vect1 - curPLinesAndPoint.Vect1);
//Canvas.SetBottom(DrawLineAndPoint, -(DrawArea.Vect2 - (curPLinesAndPoint.Vect2 - curPDraw.Vect2)));
///调整刻度
AdjustLines();
AdjustLinesAndPoints();
}
public PassValuesEventArgs(VectorChart2 v)
{
vect = v;
}
/// <summary>
/// 根据具体的值获取应该的偏移量
/// </summary>
/// <param name="offectValue"></param>
/// <returns></returns>
protected VectorChart2 GetOffectPoint(VectorChart2 offectValue)
{
return(new VectorChart2(offectValue.Vect1 / everyDisForPiexl.Vect1, offectValue.Vect2 / everyDisForPiexl.Vect2));
}
/// <summary>
/// 获取偏移量
/// </summary>
/// <returns></returns>
protected VectorChart2 GetOffectValue(VectorChart2 offectValue)
{
return(new VectorChart2(-offectValue.Vect1 * everyDisForPiexl.Vect1, offectValue.Vect2 * everyDisForPiexl.Vect2));
}