internal void DrawLine(Point startPoint, Point endPoint)
{
var p1 = startPoint;
var p2 = endPoint;
var distance = (p1 - p2).Length;
var angle = CalculateAngle(p1, p2);
var waveLength = WaveLength;
var waveHeight = WaveHeight;
var howManyWaves = distance / waveLength;
//var waveInterval = distance / howManyWaves;
var waveInterval = waveLength;
var maxBcpLength =
Math.Sqrt(waveInterval / 4.0 * (waveInterval / 4.0) + waveHeight / 2.0 * (waveHeight / 2.0));
var curveSquaring = CurveSquaring;
var bcpLength = maxBcpLength * curveSquaring;
var bcpInclination = CalculateAngle(new Point(0, 0), new Point(waveInterval / 4.0, waveHeight / 2.0));
var wigglePoints = new List <(Point bcpOut, Point bcpIn, Point anchor)>();
//添加起始点
wigglePoints.Add((new Point(), new Point(), p1));
//添加一系列数据集
var prevFlexPt = p1;
var polarity = 1;
for (var waveIndex = 0; waveIndex < howManyWaves * 2; waveIndex++)
{
var bcpOutAngle = angle + bcpInclination * polarity;
var bcpOut = new Point(prevFlexPt.X + Math.Cos(bcpOutAngle) * bcpLength,
prevFlexPt.Y + Math.Sin(bcpOutAngle) * bcpLength);
var flexPt = new Point(prevFlexPt.X + Math.Cos(angle) * waveInterval / 2.0,
prevFlexPt.Y + Math.Sin(angle) * waveInterval / 2.0);
var bcpInAngle = angle + (Math.PI - bcpInclination) * polarity;
var bcpIn = new Point(flexPt.X + Math.Cos(bcpInAngle) * bcpLength,
flexPt.Y + Math.Sin(bcpInAngle) * bcpLength);
wigglePoints.Add((bcpOut, bcpIn, flexPt));
polarity *= -1;
prevFlexPt = flexPt;
}
//纠正尾头过长/过短问题
if (wigglePoints.Count > 1)
{
var wigglePoint = wigglePoints[wigglePoints.Count - 1];
if (wigglePoint.bcpOut.X > endPoint.X)
{
wigglePoints.Remove(wigglePoint);
wigglePoints.Add((p2, p2, p2));
}
else if (wigglePoint.bcpIn.X > endPoint.X)
{
wigglePoints.Remove(wigglePoint);
wigglePoints.Add((wigglePoint.bcpOut, p2, p2));
}
else if (wigglePoint.anchor.X > endPoint.X)
{
wigglePoints.Remove(wigglePoint);
wigglePoints.Add((wigglePoint.bcpOut, wigglePoint.bcpIn, p2));
}
}
var streamGeometry = new StreamGeometry();
using (var streamGeometryContext = streamGeometry.Open())
{
streamGeometryContext.BeginFigure(wigglePoints[0].anchor, true, false);
for (var i = 1; i < wigglePoints.Count; i += 1)
{
var(bcpOut, bcpIn, anchor) = wigglePoints[i];
streamGeometryContext.BezierTo(bcpOut, bcpIn, anchor, true, false);
}
}
var visual = new DrawingVisual();
using (var context = visual.RenderOpen())
{
context.DrawGeometry(FillBrush, StrokePen, streamGeometry);
}
_visualShape.Add(visual);
}
private void RenderPolygon(DrawingContext drawingContext)
{
var fillBrush = Brushes.LawnGreen;
var borderPen = new Pen(Brushes.DarkGreen, 1.0);
if (WaveformDisplayMode == WaveformDisplayMode.Linear)
{
sampleTransformerFunc = (x => x);
}
else if (WaveformDisplayMode == WaveformDisplayMode.Logarithmic)
{
sampleTransformerFunc = (x => Math.Sign(x) * LoudnessHelper.VolumeFromLoudness(Math.Abs(x)));
}
else
{
throw new InvalidOperationException("display mode not supported: " + WaveformDisplayMode);
}
var maximums = Waveform.Maximums;
var minimums = Waveform.Minimums;
if (maximums.Length == 0)
{
return;
}
// px/sample = px/sec * sec/sample
double xScale = TimeScale * Waveform.TimePerSample;
double offsetPx = Waveform.TimeOffset * TimeScale;
double rightmostPx = offsetPx + maximums.Length * xScale;
StreamGeometry geometry = new StreamGeometry();
using (var ctx = geometry.Open())
{
ctx.BeginFigure(new Point(offsetPx, SampleToYPosition(maximums[0])), isFilled: true, isClosed: true);
for (int i = 1; i < maximums.Length; i++)
{
ctx.LineTo(new Point(offsetPx + i * xScale, SampleToYPosition(maximums[i])), true, false);
}
ctx.LineTo(new Point(rightmostPx, SampleToYPosition(maximums[maximums.Length - 1])), true, false);
ctx.LineTo(new Point(rightmostPx, SampleToYPosition(minimums[minimums.Length - 1])), true, false);
for (int i = minimums.Length - 1; i >= 0; i--)
{
ctx.LineTo(new Point(offsetPx + i * xScale, SampleToYPosition(minimums[i])), true, false);
}
}
geometry.Freeze();
drawingContext.DrawGeometry(fillBrush, borderPen, geometry);
// Alternative rendering method that draws rectangles/lines directly onto the drawingContext.
//for (int i=0; i<maximums.Length; i++)
//{
// double y = SampleToYPosition(maximums[i]);
// double h = SampleToYPosition(minimums[i]) - y;
// if (h > halfHeight * 0.1 || i == 0)
// {
// drawingContext.DrawRectangle(fillBrush, null, new Rect(
// offsetPx + i * xScale, y,
// xScale, h));
// } else
// {
// double prevMid = (SampleToYPosition(maximums[i - 1]) + SampleToYPosition(minimums[i - 1])) / 2;
// drawingContext.DrawLine(new Pen(fillBrush, 3),
// new Point(offsetPx + (i-1) * xScale, prevMid),
// new Point(offsetPx + i * xScale, y + h/2));
// }
//}
}
private static void OnHeaderSizeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TonyTabItem tonyTabItem = d as TonyTabItem;
TonyTabControl tonyTabControl = tonyTabItem.Parent as TonyTabControl;
if (tonyTabControl == null)
{
return;
}
if (tonyTabItem.mainGrid == null)
{
return;
}
if (tonyTabItem.lbHeader == null)
{
return;
}
//处理leftMargin和HeaderHeight
List <TonyTabItem> items = new List <TonyTabItem>();
foreach (var item in tonyTabControl.Items)
{
items.Add(item as TonyTabItem);
}
//找出最大的HeaderHeight
double headerHeightMax = (from i in items select i.HeaderHeight).Max();
//都设置为最大的headerHeightMax
items.ForEach(x => x.HeaderHeight = headerHeightMax);
//处理leftMargin:TonyTabItem中的Leftmargin是Header和左边的距离，现在改为Header与Header的距离
double leftMargin = 0;
foreach (TonyTabItem item in items)
{
leftMargin += item.HeaderLeftMargin;
//item.HeaderLeftMarginEx = leftMargin;
if (item == tonyTabItem)
{
break;
}
leftMargin += item.HeaderWidth;
}
//获取LeftMargin:Header距离最左边的距离
tonyTabItem.HeaderLeftMarginEx = leftMargin;
//设置Header的Margin
tonyTabItem.lbHeader.Margin = new Thickness(leftMargin, 0, 0, 0);
//处理剪切
double left = tonyTabItem.HeaderLeftMarginEx;
double h = tonyTabItem.HeaderHeight;
double w = tonyTabItem.HeaderWidth;
double ah = tonyTabControl.ActualHeight;
double aw = tonyTabControl.ActualWidth;
//Header 有4个点，ContentPresenter有各点，按点裁剪
Point p1 = new Point(left, 0);
Point p2 = new Point(left + w, 0);
Point p3 = new Point(left + w, h);
Point p4 = new Point(aw, h);
Point p5 = new Point(aw, ah);
Point p6 = new Point(0, ah);
Point p7 = new Point(0, h);
Point p8 = new Point(left, h);
StreamGeometry geometry = new StreamGeometry();
using (StreamGeometryContext ctx = geometry.Open())
{
ctx.BeginFigure(p1, true, true);
ctx.LineTo(p2, true, true);
ctx.LineTo(p3, true, true);
ctx.LineTo(p4, true, true);
ctx.LineTo(p5, true, true);
ctx.LineTo(p6, true, true);
ctx.LineTo(p7, true, true);
ctx.LineTo(p8, true, true);
}
tonyTabItem.mainGrid.Clip = geometry;//按照Header进行裁剪
}
