private void MouseDownSetBridge(MouseEventArgs e)
{
UnitPoint mousePoint = this.ToUnit(this.mouseDownPoint);
if (this.bridgeStart.IsEmpty)
{
this.bridgeStart = mousePoint;
}
else
{
this.bridgeEnd = mousePoint;
BridgingModel param = this.bridgeFunc?.Invoke();
if (param != null)
{
//1.获取图形区域与桥接直线交叉的图形
var oldObjects = this.Model.DrawingLayer.Objects.FindAll(f => HitUtil.LineIntersectWithRect(this.bridgeStart, this.bridgeEnd, f.GetBoundingRectangle(BoundingRectangleType.All)));
bool isChanged = false;
//2.计算直线与图形的交点
var newObjects = BridgeHelper.GetBridgeObjects(oldObjects, this.bridgeStart, this.bridgeEnd, param, out isChanged);
if (isChanged)
{
this.Model.DoBridge(newObjects, oldObjects, true);
}
}
this.CommandEscape();
}
}
public FrmBridging(BridgingModel bridging) : this()
{
this.Model = CopyUtil.DeepCopy(bridging);
if (this.Model.MaxDistance == 0)
{
this.Model.MaxDistance = 100;
}
if (this.Model.Width == 0)
{
this.Model.Width = 10;
}
if (!this.mvvmContext1.IsDesignMode)
{
if (this.Model == null)
{
this.Model = new BridgingModel();
}
this.mvvmContext1.SetViewModel(typeof(BridgingModel), this.Model);
this.InitializeBindings();
}
}
private static List <BridgePoints> GetBridgeByMultiSegLine(MultiSegmentLineBase multiSegLine, UnitPoint p1, UnitPoint p2, BridgingModel param)
{
List <BridgePoints> retPoints = new List <BridgePoints>();
var line = DrawingOperationHelper.GetLineEquation(p1, p2);
double width = param.Width / 2;
var oriPoints = multiSegLine.Points;
for (int index = 0; index < oriPoints.Count; index++)
{
int next = (index + 1 == oriPoints.Count) ? 0 : index + 1;
UnitPointBulge point1 = oriPoints[index];
UnitPointBulge point2 = oriPoints[next];
if (!multiSegLine.IsCloseFigure && index == oriPoints.Count - 1)
{
break;
}
if (!double.IsNaN(point1.Bulge))
{
//圆弧
ArcModelMini arcMini = DrawingOperationHelper.GetArcParametersFromBulge(point1.Point, point2.Point, (float)point1.Bulge);
arcMini.StartAngle = (float)HitUtil.RadiansToDegrees(arcMini.StartAngle);
arcMini.EndAngle = (float)HitUtil.RadiansToDegrees(arcMini.EndAngle);
List <UnitPoint> points = DrawingOperationHelper.GetIntersectPointByLineAndCircle(line.Item1, line.Item2, line.Item3, arcMini.Center, arcMini.Radius);
var hasPoints = points?.Where(p => !p.IsEmpty && HitUtil.IsPointOnArc(p, 0.000001f, arcMini) && HitUtil.IsPointInLine(p1, p2, p, 0.000001f)).ToList();
if (hasPoints != null && hasPoints.Count > 0)
{
arcMini.StartAngle = (float)HitUtil.DegreesToRadians(arcMini.StartAngle);
arcMini.EndAngle = (float)HitUtil.DegreesToRadians(arcMini.EndAngle);
//根据宽度求点
double arcLength = DrawingOperationHelper.GetArcLength(arcMini.Radius, arcMini.SweepAngle);
hasPoints?.ForEach(p =>
{
double percent = DrawingOperationHelper.GetPercentInArcByPoint(arcMini, p);
//第一个位置点
double length1 = arcLength * (1 - percent) + width;
UnitPointBulge retP1 = GetEndPointByLength(oriPoints, index, length1, false);
//第二个位置点
double length2 = arcLength * percent + width;
UnitPointBulge retP2 = GetEndPointByLength(oriPoints, index, length2, true);
var bridge = new BridgePoints(multiSegLine, retP1, retP2, HitUtil.Distance(p1, p));
retPoints.Add(bridge);
});
}
}
else
{
//直线
var lineABC = DrawingOperationHelper.GetLineEquation(point1.Point, point2.Point);
UnitPoint point = DrawingOperationHelper.GetIntersectionPointBy2Line(line.Item1, line.Item2, line.Item3, lineABC.Item1, lineABC.Item2, lineABC.Item3);
if (!point.IsEmpty && HitUtil.IsPointInLine(point1.Point, point2.Point, point, 0.000001f) && HitUtil.IsPointInLine(p1, p2, point, 0.000001f))
{
//第一个位置点
double lenght1 = HitUtil.Distance(point2.Point, point) + width;
UnitPointBulge retP1 = GetEndPointByLength(oriPoints, index, lenght1, false);
//第二个位置点
double lenght2 = HitUtil.Distance(point1.Point, point) + width;
UnitPointBulge retP2 = GetEndPointByLength(oriPoints, index, lenght2, true);
var bridge = new BridgePoints(multiSegLine, retP1, retP2, HitUtil.Distance(p1, point));
retPoints.Add(bridge);
}
}
}
return(retPoints);
}
private static List <BridgePoints> GetBridgeByArc(ArcBase arc, UnitPoint p1, UnitPoint p2, BridgingModel param)
{
List <BridgePoints> retPoints = new List <BridgePoints>();
var line = DrawingOperationHelper.GetLineEquation(p1, p2);
double width = param.Width / 2;
ArcModelMini arcMini = new DrawModel.ArcModelMini()
{
Center = arc.Center,
Radius = arc.Radius,
StartAngle = arc.StartAngle,
EndAngle = arc.EndAngle,
SweepAngle = arc.AngleSweep,
Clockwise = arc.IsClockwise
};
List <UnitPoint> points = DrawingOperationHelper.GetIntersectPointByLineAndCircle(line.Item1, line.Item2, line.Item3, arc.Center, arc.Radius);
var hasPoints = points?.Where(p => !p.IsEmpty && (HitUtil.IsPointOnArc(p, 0.000001f, arcMini) && HitUtil.IsPointInLine(p1, p2, p, 0.000001f))).ToList();
if (hasPoints != null && hasPoints.Count > 0)
{
//根据宽度求点
double angle = width / arc.Radius * (arc.IsClockwise ? 1 : -1);
hasPoints?.ForEach(p =>
{
double lineAngle = HitUtil.LineAngleR(arcMini.Center, p, 0);
double angle1 = lineAngle + angle;
double angle2 = lineAngle - angle;
UnitPoint retPoint1 = UnitPoint.Empty;
UnitPoint retPoint2 = UnitPoint.Empty;
if (HitUtil.IsPointInArc(HitUtil.RadiansToDegrees(angle1), arcMini.StartAngle, arcMini.EndAngle, arcMini.Clockwise))
{
//第一个位置点
retPoint1 = HitUtil.PointOnCircle(arcMini.Center, arcMini.Radius, angle1);
}
if (HitUtil.IsPointInArc(HitUtil.RadiansToDegrees(angle2), arcMini.StartAngle, arcMini.EndAngle, arcMini.Clockwise))
{
//第二个位置点
retPoint2 = HitUtil.PointOnCircle(arcMini.Center, arcMini.Radius, angle2);
}
BridgePoints bridges = new BridgePoints(arc,
new UnitPointBulge(retPoint1),
new UnitPointBulge(retPoint2),
HitUtil.Distance(p1, p));
retPoints.Add(bridges);
});
}
return(retPoints);
}
private static List <BridgePoints> GetBridgeByCircle(Circle circle, UnitPoint p1, UnitPoint p2, BridgingModel param)
{
List <BridgePoints> retPoints = new List <BridgePoints>();
var line = DrawingOperationHelper.GetLineEquation(p1, p2);
double width = param.Width / 2;
List <UnitPoint> points = DrawingOperationHelper.GetIntersectPointByLineAndCircle(line.Item1, line.Item2, line.Item3, circle.Center, circle.Radius);
var hasPoints = points?.Where(p => !p.IsEmpty && HitUtil.IsPointInLine(p1, p2, p, 0.000001f)).ToList();
if (hasPoints != null && hasPoints.Count > 0)
{
//根据宽度求点
double angle = width / circle.Radius * (circle.IsClockwise ? 1 : -1);
List <UnitPointBulge> temps = new List <UnitPointBulge>();
hasPoints?.ForEach(p =>
{
double lineAngle = HitUtil.LineAngleR(circle.Center, p, 0);
double angle1 = lineAngle + angle;
double angle2 = lineAngle - angle;
//第一个位置点
UnitPoint retPoint1 = HitUtil.PointOnCircle(circle.Center, circle.Radius, angle1);
//第二个位置点
UnitPoint retPoint2 = HitUtil.PointOnCircle(circle.Center, circle.Radius, angle2);
BridgePoints bridges = new BridgePoints(circle,
new UnitPointBulge(retPoint1),
new UnitPointBulge(retPoint2),
HitUtil.Distance(p1, p));
retPoints.Add(bridges);
});
}
return(retPoints);
}
public static List <IDrawObject> GetBridgeObjects(List <IDrawObject> drawObjects, UnitPoint p1, UnitPoint p2, BridgingModel param, out bool isChanged)
{
isChanged = false;//桥接是否改变了图形
List <BridgePoints> bridgePoints = new List <BridgePoints>();
#region 计算桥接点在图形中的点的坐标
drawObjects?.ForEach(drawObject =>
{
if ((drawObject.FigureType == FigureTypes.Circle))
{
Circle circle = drawObject as Circle;
var bridges = BridgeHelper.GetBridgeByCircle(circle, p1, p2, param);
bridgePoints.AddRange(bridges);
}
else if (drawObject.FigureType == FigureTypes.Arc)
{
ArcBase arc = drawObject as ArcBase;
var bridges = BridgeHelper.GetBridgeByArc(arc, p1, p2, param);
bridgePoints.AddRange(bridges);
}
else if (drawObject.FigureType == FigureTypes.LwPolyline)
{
MultiSegmentLineBase multiSegLine = drawObject as MultiSegmentLineBase;
var bridges = BridgeHelper.GetBridgeByMultiSegLine(multiSegLine, p1, p2, param);
bridgePoints.AddRange(bridges);
}
});
#endregion
#region 根据桥接点坐标，按直线的起点距离排序,如果奇数个将移除最后一个，保证偶数个可以连接
bridgePoints.Sort((x, y) => { if (x.Distance > y.Distance)
{
return(1);
}
return(-1); });
if (bridgePoints.Count % 2 == 1)
{
bridgePoints.RemoveAt(bridgePoints.Count - 1);
}
#endregion
#region 移除间距大于最大条件的点
List <BridgePoints> removes = new List <BridgePoints>();
for (int i = 0; i < bridgePoints.Count - 1; i += 2)
{
var bridge1 = bridgePoints[i];
var bridge2 = bridgePoints[i + 1];
if (Math.Abs(bridge1.Distance - bridge2.Distance) > param.MaxDistance)
{
removes.Add(bridge1);
removes.Add(bridge2);
}
}
removes.ForEach(e => bridgePoints.Remove(e));
#endregion
if (bridgePoints.Count > 0)
{
List <IDrawObject> temps = new List <IDrawObject>(); //计算后的图形
List <IDrawObject> oldDraws = new List <IDrawObject>(); //不用计算的原图
#region 根据桥接点的位置把原图形拆为多段线
foreach (IDrawObject drawObject in drawObjects)
{
var points = bridgePoints.FindAll(b => b.Owner == drawObject);
if (points.Count > 0)
{
List <IDrawObject> draws = null;
if (drawObject.FigureType == FigureTypes.Circle)
{
draws = BridgeHelper.ConvertToMultiSegLine(drawObject as Circle, points);
}
else if (drawObject.FigureType == FigureTypes.Arc)
{
draws = BridgeHelper.ConvertToMultiSegLine(drawObject as ArcBase, points);
}
else if (drawObject.FigureType == FigureTypes.LwPolyline)
{
draws = BridgeHelper.ConvertToMultiSegLine(drawObject as MultiSegmentLineBase, points);
}
if (draws != null)
{
draws.RemoveAll(p => (p as MultiSegmentLineBase).Points.Count < 2);
temps.AddRange(draws);
}
}
else
{
oldDraws.Add(drawObject);
}
}
#endregion
#region 连接最新的桥接图形
for (int i = 0; i < bridgePoints.Count - 1; i += 2)
{
var bridge1 = bridgePoints[i];
var bridge2 = bridgePoints[i + 1];
bool clockwise1 = HitUtil.IsClockwiseByCross(p1, p2, bridge1.Point1.Point);
bool clockwise2 = HitUtil.IsClockwiseByCross(p1, p2, bridge2.Point1.Point);
UnitPointBulge point11 = !clockwise1 ? bridge1.Point1 : bridge1.Point2;
UnitPointBulge point12 = clockwise1 ? bridge1.Point1 : bridge1.Point2;
UnitPointBulge point21 = !clockwise2 ? bridge2.Point1 : bridge2.Point2;
UnitPointBulge point22 = clockwise2 ? bridge2.Point1 : bridge2.Point2;
MultiSegmentLineBase draw11 = temps.Find(d => (d as MultiSegmentLineBase).Points.Contains(point11)) as MultiSegmentLineBase;
MultiSegmentLineBase draw12 = temps.Find(d => (d as MultiSegmentLineBase).Points.Contains(point12)) as MultiSegmentLineBase;
MultiSegmentLineBase draw21 = temps.Find(d => (d as MultiSegmentLineBase).Points.Contains(point21)) as MultiSegmentLineBase;
MultiSegmentLineBase draw22 = temps.Find(d => (d as MultiSegmentLineBase).Points.Contains(point22)) as MultiSegmentLineBase;
if (draw11 == null)
{
draw11 = new MultiSegmentLineBase()
{
LayerId = (bridge1.Owner as DrawObjectBase).LayerId, GroupParam = CopyUtil.DeepCopy(bridge1.Owner.GroupParam), Points = new List <UnitPointBulge>()
};
}
if (draw12 == null)
{
draw12 = new MultiSegmentLineBase()
{
LayerId = (bridge1.Owner as DrawObjectBase).LayerId, GroupParam = CopyUtil.DeepCopy(bridge1.Owner.GroupParam), Points = new List <UnitPointBulge>()
};
}
if (draw21 == null)
{
draw21 = new MultiSegmentLineBase()
{
LayerId = (bridge2.Owner as DrawObjectBase).LayerId, GroupParam = CopyUtil.DeepCopy(bridge2.Owner.GroupParam), Points = new List <UnitPointBulge>()
};
}
if (draw22 == null)
{
draw22 = new MultiSegmentLineBase()
{
LayerId = (bridge2.Owner as DrawObjectBase).LayerId, GroupParam = CopyUtil.DeepCopy(bridge2.Owner.GroupParam), Points = new List <UnitPointBulge>()
};
}
#region 组合多段线
if (draw11 == draw12 && draw21 == draw22)
{
if (draw11.Points.Count > 0 && draw11.Points[0] == point11)
{
draw11.ReverseDirection();
}
if (draw21.Points.Count > 0 && draw21.Points[0] != point21)
{
draw11.ReverseDirection();
}
if (draw11.Points.Count > 0)
{
draw11.Points[draw11.Points.Count - 1].Bulge = double.NaN;
}
if (draw21.Points.Count > 0)
{
draw21.Points[draw21.Points.Count - 1].Bulge = double.NaN;
}
draw11.Points.AddRange(draw21.Points);
draw11.IsCloseFigure = true;
temps.Remove(draw21);
}
else if (draw11 == draw12 && draw21 != draw22)
{
if (draw21.Points.Count > 0 && draw21.Points[0] == point21)
{
draw21.ReverseDirection();
}
if (draw22.Points.Count > 0 && draw22.Points[0] != point22)
{
draw22.ReverseDirection();
}
if (draw11.Points.Count > 0 && draw11.Points[0] != point11)
{
draw11.ReverseDirection();
}
if (draw21.Points.Count > 0)
{
draw21.Points[draw21.Points.Count - 1].Bulge = double.NaN;
}
if (draw11.Points.Count > 0)
{
draw11.Points[draw11.Points.Count - 1].Bulge = double.NaN;
}
draw21.Points.AddRange(draw11.Points);
draw21.Points.AddRange(draw22.Points);
temps.Remove(draw11);
temps.Remove(draw22);
}
else if (draw11 != draw12 && draw21 == draw22)
{
if (draw11.Points.Count > 0 && draw11.Points[0] == point11)
{
draw11.ReverseDirection();
}
if (draw21.Points.Count > 0 && draw21.Points[0] != point21)
{
draw21.ReverseDirection();
}
if (draw12.Points.Count > 0 && draw12.Points[0] != point12)
{
draw12.ReverseDirection();
}
if (draw11.Points.Count > 0)
{
draw11.Points[draw11.Points.Count - 1].Bulge = double.NaN;
}
if (draw21.Points.Count > 0)
{
draw21.Points[draw21.Points.Count - 1].Bulge = double.NaN;
}
draw11.Points.AddRange(draw21.Points);
draw11.Points.AddRange(draw12.Points);
temps.Remove(draw21);
temps.Remove(draw12);
}
else if (draw11 == draw21 && draw12 == draw22)
{
if (draw11.Points.Count > 0 && draw11.Points[0] != point11)
{
draw11.ReverseDirection();
}
if (draw12.Points.Count > 0 && draw12.Points[0] != point12)
{
draw12.ReverseDirection();
}
if (draw11.Points.Count > 0)
{
draw11.Points[draw11.Points.Count - 1].Bulge = double.NaN;
}
if (draw12.Points.Count > 0)
{
draw12.Points[draw12.Points.Count - 1].Bulge = double.NaN;
}
draw11.IsCloseFigure = true;
draw12.IsCloseFigure = true;
}
else if (draw11 == draw21 && draw12 != draw22)
{
if (draw11.Points.Count > 0 && draw11.Points[0] != point11)
{
draw11.ReverseDirection();
}
if (draw12.Points.Count > 0 && draw12.Points[0] == point12)
{
draw12.ReverseDirection();
}
if (draw22.Points.Count > 0 && draw22.Points[0] != point22)
{
draw22.ReverseDirection();
}
if (draw11.Points.Count > 0)
{
draw11.Points[draw11.Points.Count - 1].Bulge = double.NaN;
}
if (draw12.Points.Count > 0)
{
draw12.Points[draw12.Points.Count - 1].Bulge = double.NaN;
}
draw11.IsCloseFigure = true;
draw12.Points.AddRange(draw22.Points);
temps.Remove(draw22);
}
else if (draw11 != draw21 && draw12 == draw22)
{
if (draw12.Points.Count > 0 && draw12.Points[0] != point12)
{
draw12.ReverseDirection();
}
if (draw11.Points.Count > 0 && draw11.Points[0] == point11)
{
draw11.ReverseDirection();
}
if (draw21.Points.Count > 0 && draw21.Points[0] != point21)
{
draw21.ReverseDirection();
}
if (draw12.Points.Count > 0)
{
draw12.Points[draw12.Points.Count - 1].Bulge = double.NaN;
}
if (draw11.Points.Count > 0)
{
draw11.Points[draw11.Points.Count - 1].Bulge = double.NaN;
}
draw12.IsCloseFigure = true;
draw11.Points.AddRange(draw21.Points);
temps.Remove(draw21);
}
else
{
if (draw11.Points.Count > 0 && draw11.Points[0] == point11)
{
draw11.ReverseDirection();
}
if (draw21.Points.Count > 0 && draw21.Points[0] != point21)
{
draw21.ReverseDirection();
}
if (draw12.Points.Count > 0 && draw12.Points[0] == point12)
{
draw12.ReverseDirection();
}
if (draw22.Points.Count > 0 && draw22.Points[0] != point22)
{
draw22.ReverseDirection();
}
if (draw11.Points.Count > 0)
{
draw11.Points[draw11.Points.Count - 1].Bulge = double.NaN;
}
if (draw12.Points.Count > 0)
{
draw12.Points[draw12.Points.Count - 1].Bulge = double.NaN;
}
draw11.Points.AddRange(draw21.Points);
draw12.Points.AddRange(draw22.Points);
temps.Remove(draw21);
temps.Remove(draw22);
}
#endregion
}
#endregion
isChanged = true;
temps.ForEach(d => d.Update());
temps.AddRange(oldDraws);
return(temps);
}
return(drawObjects);
}