/// <summary>
/// 矩形类 /// </summary> public sealed class CRectangle : VtShape { #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} }#endregion
#region Privates private void InternalDrawArrowGeometry(StreamGeometryContext context) { //因为线宽的不同会导致区域显示不全，因此在计算时需考虑线宽 Point ptStart = new Point(this.StrokeThickness / 2, this.StrokeThickness / 2); Point pt2 = new Point(this.Width - this.StrokeThickness / 2, this.StrokeThickness / 2); Point pt3 = new Point(this.Width - this.StrokeThickness / 2, this.Height - this.StrokeThickness / 2); Point pt4 = new Point(this.StrokeThickness / 2, this.Height - this.StrokeThickness / 2); Point ptEnd = new Point(this.StrokeThickness / 2, 0); context.BeginFigure(ptStart, true, false); context.LineTo(pt2, true, true); context.LineTo(pt3, true, true); context.LineTo(pt4, true, true); context.LineTo(ptEnd, true, true); }#endregion
} /// <summary> /// 椭圆类 /// </summary> public sealed class CEllipse : VtShape { #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} }#endregion
#region Privates private void InternalDrawArrowGeometry(StreamGeometryContext context) { //因为线宽的不同会导致区域显示不全，因此在计算时需考虑线宽 double w = this.Width - this.StrokeThickness * 2; double h = this.Height - this.StrokeThickness * 2; if (w > 0 && h > 0) { Point pt = new Point(w / 2 + this.StrokeThickness, this.StrokeThickness); context.BeginFigure(pt, true, true); context.ArcTo(new Point(w / 2 + this.StrokeThickness, h + this.StrokeThickness), new Size(w / 2, h / 2), 0, true, SweepDirection.Counterclockwise, true, true); context.ArcTo(pt, new Size(w / 2, h / 2), 0, true, SweepDirection.Counterclockwise, true, true); } }#endregion
} /// <summary> /// 直线类 /// </summary> public sealed class CLine : VtShape { #region Dependency Propertiespublic static readonly DependencyProperty X1Property = DependencyProperty.Register("X1", typeof(double), typeof(CLine), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure));
public static readonly DependencyProperty Y1Property = DependencyProperty.Register("Y1", typeof(double), typeof(CLine), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure)); public static readonly DependencyProperty X2Property = DependencyProperty.Register("X2", typeof(double), typeof(CLine), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure)); public static readonly DependencyProperty Y2Property = DependencyProperty.Register("Y2", typeof(double), typeof(CLine), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure)); #endregion#region CLR Properties
[TypeConverter(typeof(LengthConverter))] public double X1 { get { return (double)base.GetValue(X1Property); } set { base.SetValue(X1Property, value); } }[TypeConverter(typeof(LengthConverter))]
public double Y1 { get { return (double)base.GetValue(Y1Property); } set { base.SetValue(Y1Property, value); } }[TypeConverter(typeof(LengthConverter))]
public double X2 { get { return (double)base.GetValue(X2Property); } set { base.SetValue(X2Property, value); } }[TypeConverter(typeof(LengthConverter))]
public double Y2 { get { return (double)base.GetValue(Y2Property); } set { base.SetValue(Y2Property, value); } } #endregion #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} } #endregion #region Privates public CLine(Canvas linePanel) { _panel = linePanel; _panel.Children.Add(_arrow.lineCap_start); _panel.Children.Add(_arrow.lineCap_end); } private void InternalDrawArrowGeometry(StreamGeometryContext context) { double theta = Math.Atan2(Y1 - Y2, X1 - X2); double sint = Math.Sin(theta); double cost = Math.Cos(theta);Point pt1 = new Point(X1, this.Y1);
Point pt2 = new Point(X2, this.Y2);Point pt3 = new Point(
X2 + (_arrow.HeadWidth * cost - _arrow.HeadHeight * sint), Y2 + (_arrow.HeadWidth * sint + _arrow.HeadHeight * cost));Point pt4 = new Point(
X2 + (_arrow.HeadWidth * cost + _arrow.HeadHeight * sint), Y2 - (_arrow.HeadHeight * cost - _arrow.HeadWidth * sint));Point pt5 = new Point(
X1 - (_arrow.TailWidth * cost - _arrow.TailHeight * sint), Y1 - (_arrow.TailWidth * sint + _arrow.TailHeight * cost));Point pt6 = new Point(
X1 - (_arrow.TailWidth * cost + _arrow.TailHeight * sint), Y1 + (_arrow.TailHeight * cost - _arrow.TailWidth * sint)); //this.StrokeStartLineCap = PenLineCap.Triangle; //this.StrokeEndLineCap = PenLineCap.Triangle;//lineCap_start = new Polygon();
PointCollection pts_start = new PointCollection(); pts_start.Add(pt5); pts_start.Add(pt1); pts_start.Add(pt6); PointCollection pts_end = new PointCollection(); pts_end.Add(pt3); pts_end.Add(pt2); pts_end.Add(pt4); SetLineCap( pt1, pt2, pt1, pt2);//设置线帽 context.BeginFigure(pt1, false, false); //context.LineTo(pt5, true, true); //context.LineTo(pt1, true, true); //context.LineTo(pt6, true, true); //context.LineTo(pt1, true, true); //绘制第一个点的线帽 context.LineTo(pt2, true, true);//绘制直线 //context.LineTo(pt3, true, true); //context.LineTo(pt2, true, true); //context.LineTo(pt4, true, true); //绘制第二个点的线帽 } #endregion } /// <summary> /// 右直角三角形类 /// </summary> public sealed class CRightTriangle : VtShape { #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} }#endregion
#region Privatesprivate void InternalDrawArrowGeometry(StreamGeometryContext context)
{ double angle = Math.Atan(this.Height / (this.Width / 2)); double offsetTop = this.StrokeThickness / Math.Cos(angle); double offsetLeft = this.StrokeThickness / Math.Tan(angle) + this.StrokeThickness / Math.Sign(angle);Point pt1 = new Point(this.Width - offsetLeft, 0);
Point pt2 = new Point(0, this.Height - this.StrokeThickness); Point pt3 = new Point(this.Width - offsetLeft, this.Height - this.StrokeThickness); context.BeginFigure(pt1, true, true); context.LineTo(pt2, true, true); context.LineTo(pt3, true, true); context.LineTo(pt1, true, true); }#endregion
} /// <summary> /// 左直角三角形类 /// </summary> public sealed class CLeftTriangle : VtShape { #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} }#endregion
#region Privatesprivate void InternalDrawArrowGeometry(StreamGeometryContext context)
{ double angle = Math.Atan(this.Height / (this.Width / 2)); double offsetTop = this.StrokeThickness / Math.Cos(angle); double offsetLeft = this.StrokeThickness / Math.Tan(angle) + this.StrokeThickness / Math.Sign(angle);Point pt1 = new Point(0, 0);
Point pt2 = new Point(0, this.Height - this.StrokeThickness); Point pt3 = new Point(this.Width - offsetLeft, this.Height - this.StrokeThickness); context.BeginFigure(pt1, true, true); context.LineTo(pt2, true, true); context.LineTo(pt3, true, true); context.LineTo(pt1, true, true); }#endregion
} /// <summary> /// 等腰三角形类 /// </summary> public sealed class CTriangle : VtShape { #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} }#endregion
#region Privatesprivate void InternalDrawArrowGeometry(StreamGeometryContext context)
{ double angle = Math.Atan(this.Height / (this.Width / 2)); double offsetTop = this.StrokeThickness / Math.Cos(angle); double offsetLeft = this.StrokeThickness / Math.Tan(angle) + this.StrokeThickness / Math.Sign(angle);Point pt1 = new Point(this.Width / 2, this.StrokeThickness);
Point pt2 = new Point(offsetLeft, this.Height - this.StrokeThickness); Point pt3 = new Point(this.Width - offsetLeft, this.Height - this.StrokeThickness); context.BeginFigure(pt1, true, true); context.LineTo(pt2, true, true); context.LineTo(pt3, true, true); context.LineTo(pt1, true, true); }#endregion
} /// <summary> /// 菱形类 /// </summary> public sealed class CDiamond : VtShape { #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} } #endregion #region Privates private void InternalDrawArrowGeometry(StreamGeometryContext context) { double angle = Math.Atan(this.Height / (this.Width / 2)); Point pt1 = new Point(this.Width / 2, this.StrokeThickness); Point pt2 = new Point(this.StrokeThickness, this.Height /2); Point pt3 = new Point(this.Width / 2, this.Height - this.StrokeThickness); Point pt4 = new Point(this.Width - this.StrokeThickness, this.Height / 2); context.BeginFigure(pt1, true, true); context.LineTo(pt1, true, true); context.LineTo(pt2, true, true); context.LineTo(pt3, true, true); context.LineTo(pt4, true, true); }#endregion
} /// <summary> /// 菱形类 /// </summary> public sealed class CFiveStar : VtShape { #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} } #endregion #region Privates private Point Intersection(Point pt1, Point pt2, Point pt3, Point pt4) {double A1 = pt1.Y - pt2.Y;
double B1 = pt2.X - pt1.X; double C1 = pt1.Y * (pt2.X - pt1.X) - pt1.X * (pt2.Y - pt1.Y); double A2 = pt3.Y - pt4.Y, B2 = pt4.X - pt3.X, C2 = pt3.Y * (pt4.X - pt3.X) - pt3.X * (pt4.Y - pt3.Y); //A1 * x + B1 * y = C1 //A2 * x + B2 * y = C2 double D = A1 * B2 - B1 * A2, Dx = C1 * B2 - B1 * C2, Dy = A1 * C2 - A2 * C1; double x = Dx / (double)D, y = Dy / (double)D; return new Point((int)x, (int)y); } private Point RotateTheta(Point pt,Point center,double theta) { double x = center.X + (pt.X - center.X) * Math.Cos((theta * Math.PI / 180)) - (pt.Y - center.Y) * Math.Sin((theta * Math.PI / 180)); double y = center.Y + (pt.X - center.X) * Math.Sin((theta * Math.PI / 180)) + (pt.Y - center.Y) * Math.Cos((theta * Math.PI / 180)); return new Point(x, y); } private void InternalDrawArrowGeometry(StreamGeometryContext context) { Point ptCenter = new Point(this.Width / 2, this.Height / 2); double radius = this.Width / 2; Point[] pts = new Point[10]; pts[0] = new Point(ptCenter.X, (int)(ptCenter.Y - radius )); for (int i = 1; i < 5; i++) { pts[2 * i] = RotateTheta(pts[2 * (i - 1)], ptCenter, 72.0); pts[2 * i].X = (int)(ptCenter.X + (pts[2 * i].X - ptCenter.X) ); pts[2 * i].Y = (int)(ptCenter.Y + (pts[2 * i].Y - ptCenter.Y) ); } //通过直线求交点的方式来取得1,3,5,7,9点坐标 pts[1] = Intersection(pts[0], pts[4], pts[2], pts[8]); pts[3] = Intersection(pts[0], pts[4], pts[2], pts[6]); pts[5] = Intersection(pts[2], pts[6], pts[4], pts[8]); pts[7] = Intersection(pts[0], pts[6], pts[4], pts[8]); pts[9] = Intersection(pts[0], pts[6], pts[2], pts[8]);context.BeginFigure(pts[0], true, true);
context.LineTo(pts[1], true, true); context.LineTo(pts[2], true, true); context.LineTo(pts[3], true, true); context.LineTo(pts[4], true, true); context.LineTo(pts[5], true, true); context.LineTo(pts[6], true, true); context.LineTo(pts[7], true, true); context.LineTo(pts[8], true, true); context.LineTo(pts[9], true, true); }#endregion
} /// <summary> /// 三次贝塞尔曲线类 /// </summary> public sealed class CBezierCurve : VtShape { #region Dependency Properties //public static readonly DependencyProperty X1Property = DependencyProperty.Register("X1", typeof(double), typeof(CLine), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure)); //public static readonly DependencyProperty Y1Property = DependencyProperty.Register("Y1", typeof(double), typeof(CLine), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure)); //public static readonly DependencyProperty X2Property = DependencyProperty.Register("X2", typeof(double), typeof(CLine), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure)); //public static readonly DependencyProperty Y2Property = DependencyProperty.Register("Y2", typeof(double), typeof(CLine), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure));public static readonly DependencyProperty BezierPointsProperty = DependencyProperty.Register("BezierPoints", typeof(List<Point>), typeof(CBezierCurve), new FrameworkPropertyMetadata(new List<Point>(), FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure));
//public static readonly DependencyProperty BezierTmpPointProperty = DependencyProperty.Register("BezierTmpPoint", typeof(Point), typeof(CBezierCurve), new FrameworkPropertyMetadata(new Point(0,0), FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure)); #endregion#region CLR Properties
[TypeConverter(typeof(double))] public List<Point> BezierPoints { get { return (List<Point>)base.GetValue(BezierPointsProperty); } set { BezierPoints.Clear(); base.SetValue(BezierPointsProperty, value); } } //[TypeConverter(typeof(double))] //public Point BezierTmpPoint //{ // get { return (Point)base.GetValue(BezierTmpPointProperty); } // set { base.SetValue(BezierTmpPointProperty, value); } //} #endregion #region Overridesprotected override Geometry DefiningGeometry
{ get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd;using (StreamGeometryContext context = geometry.Open())
{ InternalDrawArrowGeometry(context); }// Freeze the geometry for performance benefits
geometry.Freeze();return geometry;
} } #endregion #region Privatesprivate List<Point> _lstCtrPoints = new List<Point>();
public bool _bDrawing = false;//是否正在绘制 public Point BezierTmpPoint = new Point(0, 0); private void InternalDrawArrowGeometry(StreamGeometryContext context) { _lstCtrPoints.Clear(); List<Point> lstPoints = new List<Point>(); List<Point> lstCtrPoints = new List<Point>(); foreach (Point pt in BezierPoints) { lstPoints.Add(new Point(pt.X, pt.Y)); } if (_bDrawing == true && (BezierTmpPoint.X > 0 || BezierTmpPoint.Y > 0)) { lstPoints.Add(new Point(BezierTmpPoint.X, BezierTmpPoint.Y));for (int i = 0; i < lstPoints.Count; i++)
{ lstCtrPoints.AddRange(Control1(lstPoints, i)); if (i < lstPoints.Count - 1) { _lstCtrPoints.AddRange(Control1(lstPoints, i)); } } } else if (_bDrawing == false) { for (int i = 0; i < lstPoints.Count; i++) { lstCtrPoints.AddRange(Control1(lstPoints, i)); _lstCtrPoints.AddRange(Control1(lstPoints, i)); } } if (lstPoints != null && lstPoints.Count > 1) { Point ptStart = lstPoints[0]; Point ptEnd = lstPoints[lstPoints.Count - 1]; //先绘制开始线帽 SetLineCap(lstPoints[lstPoints.Count - 2], ptEnd, ptStart, lstPoints[1]); context.BeginFigure(ptStart, true, false); //再绘制曲线 for (int i = 1; i < lstPoints.Count; i++) { context.BezierTo(lstCtrPoints[i * 2 - 1], lstCtrPoints[i * 2], lstPoints[i], true, true); } }}
private List<Point> Control1(List<Point> list, int n) { List<Point> point = new List<Point>(); point.Add(new Point()); point.Add(new Point()); if (n == 0) { point[0] = list[0]; } else { point[0] = Average(list[n - 1], list[n]); } if (n == list.Count - 1) { point[1] = list[list.Count - 1]; } else { point[1] = Average(list[n], list[n + 1]); } Point ave = Average(point[0], point[1]); Point sh = Sub(list[n], ave); point[0] = Mul(Add(point[0], sh), list[n], 0.6); point[1] = Mul(Add(point[1], sh), list[n], 0.6);return point;
} private Point Average(Point x, Point y) { return new Point((x.X + y.X) / 2, (x.Y + y.Y) / 2); } private Point Add(Point x, Point y) { return new Point(x.X + y.X, x.Y + y.Y); } private Point Sub(Point x, Point y) { return new Point(x.X - y.X, x.Y - y.Y); } private Point Mul(Point x, Point y, double d) { Point temp = Sub(x, y); temp = new Point(temp.X * d, temp.Y * d); temp = Add(y, temp); return temp; } #endregion #region Public public CBezierCurve(Canvas linePanel) { _panel = linePanel; _panel.Children.Add(_arrow.lineCap_start); _panel.Children.Add(_arrow.lineCap_end); } public void GetVectorRect(ref Point TopLeft, ref Point BottomRight) { if (BezierPoints.Count > 0) { TopLeft.X = BezierPoints[0].X; TopLeft.Y = BezierPoints[0].Y; BottomRight.X = BezierPoints[0].X; BottomRight.Y = BezierPoints[0].Y; #region 曲线顶点 foreach (Point pt in BezierPoints) { if (pt.X < TopLeft.X) { TopLeft.X = pt.X; } if (pt.Y < TopLeft.Y) { TopLeft.Y = pt.Y; } if (pt.X > BottomRight.X) { BottomRight.X = pt.X; } if (pt.Y > BottomRight.Y) { BottomRight.Y = pt.Y; } } #endregion #region 曲线控制点 foreach (Point pt in _lstCtrPoints) { if (pt.X < TopLeft.X) { TopLeft.X = pt.X; } if (pt.Y < TopLeft.Y) { TopLeft.Y = pt.Y; } if (pt.X > BottomRight.X) { BottomRight.X = pt.X; } if (pt.Y > BottomRight.Y) { BottomRight.Y = pt.Y; } } #endregion } } public void Clear() { if (BezierPoints.Count > 0) { BezierPoints.Clear(); } if (_lstCtrPoints.Count > 0) { _lstCtrPoints.Clear(); } } #endregion }/// <summary>
/// 线帽样式 /// </summary> public enum EnumArrowStyle { NULL = 0, STYLE1 = 1, STYLE2 = 2, STYLE3 = 3, STYLE4 = 4, STYLE5 = 5, STYLE6 = 6, STYLE7 = 7, STYLE8 = 8, STYLE9 = 9, STYLE10 = 10, STYLE11 = 11, STYLE12 = 12 } /// <summary> /// 线型样式 /// </summary> public enum EnumDottedStyle { NULL = 0, STYLE1 = 1, STYLE2 = 2, STYLE3 = 3, STYLE4 = 4, STYLE5 = 5 } /// <summary> /// 形状类，为形状设置线型、线帽 /// </summary> public class VtShape : Shape { #region Arrow Style public struct Arrow { public double HeadWidth; public double HeadHeight; public double TailWidth; public double TailHeight; public Polygon lineCap_start; public Polygon lineCap_end; public Arrow(double _headWidth, double _headHeight, double _tailWidth, double _tailHeight, Polygon lineCapstart, Polygon lineCapend) { HeadWidth = _headWidth; HeadHeight = _headHeight; TailWidth = _tailWidth; TailHeight = _tailHeight; lineCap_start = lineCapstart; lineCap_end = lineCapend; } } protected Arrow _arrow = new Arrow(0, 0, 0, 0, new Polygon(), new Polygon()); public static readonly DependencyProperty ArrowStyleProperty = DependencyProperty.Register("ArrowStyle", typeof(EnumArrowStyle), typeof(VtShape), new FrameworkPropertyMetadata(EnumArrowStyle.NULL, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure));protected Canvas _panel = null;
[TypeConverter(typeof(EnumArrowStyle))] public EnumArrowStyle ArrowStyle { get { return (EnumArrowStyle)base.GetValue(ArrowStyleProperty); } set { base.SetValue(ArrowStyleProperty, value); #region 设置箭头大小 switch (ArrowStyle) { case EnumArrowStyle.NULL: _arrow.HeadWidth = 0; _arrow.HeadHeight = 0; _arrow.TailWidth = 0; _arrow.TailHeight = 0; break; case EnumArrowStyle.STYLE1: _arrow.HeadWidth = 30; _arrow.HeadHeight = 20; _arrow.TailWidth = 0; _arrow.TailHeight = 0; break; case EnumArrowStyle.STYLE2: _arrow.HeadWidth = 30; _arrow.HeadHeight = 20; _arrow.TailWidth = 0; _arrow.TailHeight = 0; break; case EnumArrowStyle.STYLE3: _arrow.HeadWidth = 30; _arrow.HeadHeight = 20; _arrow.TailWidth = 0; _arrow.TailHeight = 0; break; case EnumArrowStyle.STYLE4: _arrow.HeadWidth = 30; _arrow.HeadHeight = 20; _arrow.TailWidth = 0; _arrow.TailHeight = 0; break; case EnumArrowStyle.STYLE5: _arrow.HeadWidth = 0; _arrow.HeadHeight = 0; _arrow.TailWidth = 30; _arrow.TailHeight = 20; break; case EnumArrowStyle.STYLE6: _arrow.HeadWidth = 0; _arrow.HeadHeight = 0; _arrow.TailWidth = 30; _arrow.TailHeight = 20; break; case EnumArrowStyle.STYLE7: _arrow.HeadWidth = 0; _arrow.HeadHeight = 0; _arrow.TailWidth = 30; _arrow.TailHeight = 20; break; case EnumArrowStyle.STYLE8: _arrow.HeadWidth = 0; _arrow.HeadHeight = 0; _arrow.TailWidth = 30; _arrow.TailHeight = 20; break; case EnumArrowStyle.STYLE9: _arrow.HeadWidth = 30; _arrow.HeadHeight = 20; _arrow.TailWidth = 30; _arrow.TailHeight = 20; break; case EnumArrowStyle.STYLE10: _arrow.HeadWidth = 30; _arrow.HeadHeight = 20; _arrow.TailWidth = 30; _arrow.TailHeight = 20; break; case EnumArrowStyle.STYLE11: _arrow.HeadWidth = 30; _arrow.HeadHeight = 20; _arrow.TailWidth = 30; _arrow.TailHeight = 20; break; case EnumArrowStyle.STYLE12: _arrow.HeadWidth = 30; _arrow.HeadHeight = 20; _arrow.TailWidth = 30; _arrow.TailHeight = 20; break; } #endregion } } protected enum LineCapType { LineCap_Start =0, LineCap_End =1 } protected void SetLineCap( Point pt1_start, Point pt1_end,Point pt2_start, Point pt2_end) { _arrow.lineCap_start.Points = new PointCollection (); _arrow.lineCap_end.Points = new PointCollection (); _arrow.lineCap_start.Fill = ((Polygon)_arrow.lineCap_start).Stroke = this.Stroke; // Brushes.Yellow; _arrow.lineCap_end.Fill = ((Polygon)_arrow.lineCap_end).Stroke = this.Stroke;//= Brushes.Yellow; _arrow.lineCap_start.StrokeThickness = _arrow.lineCap_end.StrokeThickness = this.StrokeThickness; switch (ArrowStyle) { case EnumArrowStyle.NULL: break; case EnumArrowStyle.STYLE1: SetTriangle2Cap(LineCapType.LineCap_End, pt1_start, pt1_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE2: SetTriangleCap(LineCapType.LineCap_End, pt1_start, pt1_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE3: SetRectCap(LineCapType.LineCap_End, pt1_start, pt1_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE4: SetTriangle3Cap(LineCapType.LineCap_End, pt1_start, pt1_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE5: SetTriangle2Cap(LineCapType.LineCap_Start, pt2_start, pt2_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE6: SetTriangleCap(LineCapType.LineCap_Start, pt2_start, pt2_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE7: SetRectCap(LineCapType.LineCap_Start, pt2_start, pt2_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE8: SetTriangle3Cap(LineCapType.LineCap_Start, pt2_start, pt2_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE9: SetTriangle2Cap(LineCapType.LineCap_End, pt1_start, pt1_end, _arrow.lineCap_start, _arrow.lineCap_end); SetTriangle2Cap(LineCapType.LineCap_Start, pt2_start, pt2_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE10: SetTriangleCap(LineCapType.LineCap_End, pt1_start, pt1_end, _arrow.lineCap_start, _arrow.lineCap_end); SetTriangleCap(LineCapType.LineCap_Start, pt2_start, pt2_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE11: SetRectCap(LineCapType.LineCap_End, pt1_start, pt1_end, _arrow.lineCap_start, _arrow.lineCap_end); SetRectCap(LineCapType.LineCap_Start, pt2_start, pt2_end, _arrow.lineCap_start, _arrow.lineCap_end); break; case EnumArrowStyle.STYLE12: SetTriangle3Cap(LineCapType.LineCap_End, pt1_start, pt1_end, _arrow.lineCap_start, _arrow.lineCap_end); SetTriangle3Cap(LineCapType.LineCap_Start, pt2_start, pt2_end, _arrow.lineCap_start, _arrow.lineCap_end); break; } }/// <summary>
/// 封闭的三角形线帽 /// </summary> /// <param name="pt_start"></param> /// <param name="pt_end"></param> /// <param name="cap_start"></param> /// <param name="cap_end"></param> private void SetTriangleCap(LineCapType lineCapType, Point pt_start, Point pt_end, Polygon cap_start, Polygon cap_end) { double theta = Math.Atan2(pt_start.Y - pt_end.Y, pt_start.X - pt_end.X); double sint = Math.Sin(theta); double cost = Math.Cos(theta); if (lineCapType == LineCapType.LineCap_Start ) { cap_start.Points.Add( new Point( pt_start.X - (_arrow.TailWidth * cost - _arrow.TailHeight * sint), pt_start.Y - (_arrow.TailWidth * sint + _arrow.TailHeight * cost)) ); cap_start.Points.Add(new Point(pt_start.X + 20 * cost, pt_start.Y + 20 * sint)); cap_start.Points.Add( new Point( pt_start.X - (_arrow.TailWidth * cost + _arrow.TailHeight * sint), pt_start.Y + (_arrow.TailHeight * cost - _arrow.TailWidth * sint)) ); } if (lineCapType == LineCapType.LineCap_End) { cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost - _arrow.HeadHeight * sint), pt_end.Y + (_arrow.HeadWidth * sint + _arrow.HeadHeight * cost)) ); cap_end.Points.Add(new Point(pt_end.X - 20 * cost, pt_end.Y - 20 * sint)); cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost + _arrow.HeadHeight * sint), pt_end.Y - (_arrow.HeadHeight * cost - _arrow.HeadWidth * sint)) ); } } /// <summary> /// 非封闭的三角形线帽 /// </summary> /// <param name="pt_start">端点1</param> /// <param name="pt_end">端点2</param> /// <param name="cap_start">端点1形状</param> /// <param name="cap_end">端点2形状</param> private void SetTriangle2Cap(LineCapType lineCapType, Point pt_start, Point pt_end, Polygon cap_start, Polygon cap_end) { double theta = Math.Atan2(pt_start.Y - pt_end.Y, pt_start.X - pt_end.X); double sint = Math.Sin(theta); double cost = Math.Cos(theta); if (lineCapType == LineCapType.LineCap_Start) { cap_start.Points.Add( new Point( pt_start.X - (_arrow.TailWidth * cost - _arrow.TailHeight * sint), pt_start.Y - (_arrow.TailWidth * sint + _arrow.TailHeight * cost)) ); cap_start.Points.Add(new Point(pt_start.X + 20 * cost, pt_start.Y + 20 * sint)); cap_start.Points.Add(new Point( pt_start.X - (_arrow.TailWidth * cost + _arrow.TailHeight * sint), pt_start.Y + (_arrow.TailHeight * cost - _arrow.TailWidth * sint)) ); cap_start.Points.Add(new Point(pt_start.X - 5 * cost, pt_start.Y - 5 * sint)); cap_start.Points.Add( new Point( pt_start.X - (_arrow.TailWidth * cost - _arrow.TailHeight * sint), pt_start.Y - (_arrow.TailWidth * sint + _arrow.TailHeight * cost)) ); } if (lineCapType == LineCapType.LineCap_End) { cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost - _arrow.HeadHeight * sint), pt_end.Y + (_arrow.HeadWidth * sint + _arrow.HeadHeight * cost)) ); cap_end.Points.Add(new Point(pt_end.X , pt_end.Y )); cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost + _arrow.HeadHeight * sint), pt_end.Y - (_arrow.HeadHeight * cost - _arrow.HeadWidth * sint)) ); cap_end.Points.Add(new Point(pt_end.X - 25 * cost, pt_end.Y - 25 * sint)); cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost - _arrow.HeadHeight * sint), pt_end.Y + (_arrow.HeadWidth * sint + _arrow.HeadHeight * cost)) ); } } /// <summary> /// 非封闭的三角形线帽 /// </summary> /// <param name="pt_start">端点1</param> /// <param name="pt_end">端点2</param> /// <param name="cap_start">端点1形状</param> /// <param name="cap_end">端点2形状</param> private void SetTriangle3Cap(LineCapType lineCapType, Point pt_start, Point pt_end, Polygon cap_start, Polygon cap_end) { double theta = Math.Atan2(pt_start.Y - pt_end.Y, pt_start.X - pt_end.X); double sint = Math.Sin(theta); double cost = Math.Cos(theta); if (lineCapType == LineCapType.LineCap_Start) { cap_start.Points.Add( new Point( pt_start.X - (_arrow.TailWidth * cost - _arrow.TailHeight * sint), pt_start.Y - (_arrow.TailWidth * sint + _arrow.TailHeight * cost)) ); cap_start.Points.Add(new Point(pt_start.X, pt_start.Y)); cap_start.Points.Add(new Point( pt_start.X - (_arrow.TailWidth * cost + _arrow.TailHeight * sint), pt_start.Y + (_arrow.TailHeight * cost - _arrow.TailWidth * sint)) ); cap_start.Points.Add(new Point(pt_start.X - 1 * cost, pt_start.Y - 1 * sint)); cap_start.Points.Add( new Point( pt_start.X - (_arrow.TailWidth * cost - _arrow.TailHeight * sint), pt_start.Y - (_arrow.TailWidth * sint + _arrow.TailHeight * cost)) ); } if (lineCapType == LineCapType.LineCap_End) { cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost - _arrow.HeadHeight * sint), pt_end.Y + (_arrow.HeadWidth * sint + _arrow.HeadHeight * cost)) ); cap_end.Points.Add(new Point(pt_end.X, pt_end.Y)); cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost + _arrow.HeadHeight * sint), pt_end.Y - (_arrow.HeadHeight * cost - _arrow.HeadWidth * sint)) ); cap_end.Points.Add(new Point(pt_end.X - 1 * cost, pt_end.Y - 1 * sint)); cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost - _arrow.HeadHeight * sint), pt_end.Y + (_arrow.HeadWidth * sint + _arrow.HeadHeight * cost)) ); } } /// <summary> /// 封闭矩形线帽 /// </summary> /// <param name="pt_start">端点1</param> /// <param name="pt_end">端点2</param> /// <param name="cap_start">端点1形状</param> /// <param name="cap_end">端点2形状</param> private void SetRectCap(LineCapType lineCapType, Point pt_start, Point pt_end, Polygon cap_start, Polygon cap_end) { double theta = Math.Atan2(pt_start.Y - pt_end.Y, pt_start.X - pt_end.X); double sint = Math.Sin(theta); double cost = Math.Cos(theta); if (lineCapType == LineCapType.LineCap_Start) { cap_start.Points.Add( new Point( pt_start.X - (_arrow.TailWidth * cost - _arrow.TailHeight * sint), pt_start.Y - (_arrow.TailWidth * sint + _arrow.TailHeight * cost)) ); cap_start.Points.Add(new Point(pt_start.X , pt_start.Y )); cap_start.Points.Add(new Point( pt_start.X - (_arrow.TailWidth * cost + _arrow.TailHeight * sint), pt_start.Y + (_arrow.TailHeight * cost - _arrow.TailWidth * sint)) ); cap_start.Points.Add(new Point(pt_start.X - 60 * cost, pt_start.Y - 60 * sint)); cap_start.Points.Add( new Point( pt_start.X - (_arrow.TailWidth * cost - _arrow.TailHeight * sint), pt_start.Y - (_arrow.TailWidth * sint + _arrow.TailHeight * cost)) ); } if (lineCapType == LineCapType.LineCap_End) { cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost - _arrow.HeadHeight * sint), pt_end.Y + (_arrow.HeadWidth * sint + _arrow.HeadHeight * cost)) ); cap_end.Points.Add(new Point(pt_end.X + 60 * cost, pt_end.Y + 60 * sint)); cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost + _arrow.HeadHeight * sint), pt_end.Y - (_arrow.HeadHeight * cost - _arrow.HeadWidth * sint)) ); cap_end.Points.Add(new Point(pt_end.X, pt_end.Y)); cap_end.Points.Add( new Point( pt_end.X + (_arrow.HeadWidth * cost - _arrow.HeadHeight * sint), pt_end.Y + (_arrow.HeadWidth * sint + _arrow.HeadHeight * cost)) ); } } #endregion #region Dotted Style private EnumDottedStyle _DottedStyle = EnumDottedStyle.NULL; public EnumDottedStyle DottedStyle { set { _DottedStyle = value; this.StrokeDashArray = SetDottedStyle(_DottedStyle); } get { return _DottedStyle; } } protected DoubleCollection SetDottedStyle(EnumDottedStyle style) { DoubleCollection dotted = new DoubleCollection(); if (style == EnumDottedStyle.NULL) { dotted = null; return dotted; } if (dotted == null) { dotted = new DoubleCollection(); } dotted.Clear(); switch (style) { case EnumDottedStyle.STYLE1: dotted.Add(3); dotted.Add(1); break; case EnumDottedStyle.STYLE2: dotted.Add(1); dotted.Add(1); dotted.Add(4); dotted.Add(1); break; case EnumDottedStyle.STYLE3: dotted.Add(7); dotted.Add(2); break; case EnumDottedStyle.STYLE4: dotted.Add(5); dotted.Add(1); break; case EnumDottedStyle.STYLE5: dotted.Add(1); dotted.Add(1); break; } return dotted; } #endregion #region Overrides protected override Geometry DefiningGeometry { get { // Create a StreamGeometry for describing the shape StreamGeometry geometry = new StreamGeometry(); geometry.FillRule = FillRule.EvenOdd; geometry.Freeze(); return geometry; } } #endregion }
效果图如下：
