示例#1
0
        private static Rect GetRectWithMargin(ConnectorInfo connectorThumb, double margin)
        {
            Rect rect = new Rect(connectorThumb.DesignerItemLeft,
                                 connectorThumb.DesignerItemTop,
                                 connectorThumb.DesignerItemSize.Width,
                                 connectorThumb.DesignerItemSize.Height);

            rect.Inflate(margin, margin);

            return rect;
        }
示例#2
0
        private static Point GetNearestVisibleNeighborSink(Point currentPoint, Point endPoint, ConnectorInfo sink, Rect rectSource, Rect rectSink)
        {
            Point s1, s2; // neighbors on sink side
            GetNeighborCorners(sink.Orientation, rectSink, out s1, out s2);

            bool flag1 = IsPointVisible(currentPoint, s1, new Rect[] { rectSource, rectSink });
            bool flag2 = IsPointVisible(currentPoint, s2, new Rect[] { rectSource, rectSink });

            if (flag1) // s1 visible
            {
                if (flag2) // s1 and s2 visible
                {
                    if (rectSink.Contains(s1))
                        return s2;

                    if (rectSink.Contains(s2))
                        return s1;

                    if ((Distance(s1, endPoint) <= Distance(s2, endPoint)))
                        return s1;
                    else
                        return s2;

                }
                else
                {
                    return s1;
                }
            }
            else // s1 not visible
            {
                if (flag2) // only s2 visible
                {
                    return s2;
                }
                else // s1 and s2 not visible
                {
                    return new Point(double.NaN, double.NaN);
                }
            }
        }
示例#3
0
        private static Point GetOffsetPoint(ConnectorInfo connector, Rect rect)
        {
            Point offsetPoint = new Point();

            switch (connector.Orientation)
            {
                case ConnectorOrientation.Left:
                    offsetPoint = new Point(rect.Left, connector.Position.Y);
                    break;
                case ConnectorOrientation.Top:
                    offsetPoint = new Point(connector.Position.X, rect.Top);
                    break;
                case ConnectorOrientation.Right:
                    offsetPoint = new Point(rect.Right, connector.Position.Y);
                    break;
                case ConnectorOrientation.Bottom:
                    offsetPoint = new Point(connector.Position.X, rect.Bottom);
                    break;
                default:
                    break;
            }

            return offsetPoint;
        }
示例#4
0
        private static Point GetNearestNeighborSource(ConnectorInfo source, Point endPoint, Rect rectSource, out bool flag)
        {
            Point n1, n2; // neighbors
            GetNeighborCorners(source.Orientation, rectSource, out n1, out n2);

            if ((Distance(n1, endPoint) <= Distance(n2, endPoint)))
            {
                flag = true;
                return n1;
            }
            else
            {
                flag = false;
                return n2;
            }
        }
示例#5
0
        private static void CheckPathEnd(ConnectorInfo source, ConnectorInfo sink, bool showLastLine, List<Point> linePoints)
        {
            if (showLastLine)
            {
                Point startPoint = new Point(0, 0);
                Point endPoint = new Point(0, 0);
                double marginPath = 15;
                switch (source.Orientation)
                {
                    case ConnectorOrientation.Left:
                        startPoint = new Point(source.Position.X - marginPath, source.Position.Y);
                        break;
                    case ConnectorOrientation.Top:
                        startPoint = new Point(source.Position.X, source.Position.Y - marginPath);
                        break;
                    case ConnectorOrientation.Right:
                        startPoint = new Point(source.Position.X + marginPath, source.Position.Y);
                        break;
                    case ConnectorOrientation.Bottom:
                        startPoint = new Point(source.Position.X, source.Position.Y + marginPath);
                        break;
                    default:
                        break;
                }

                switch (sink.Orientation)
                {
                    case ConnectorOrientation.Left:
                        endPoint = new Point(sink.Position.X - marginPath, sink.Position.Y);
                        break;
                    case ConnectorOrientation.Top:
                        endPoint = new Point(sink.Position.X, sink.Position.Y - marginPath);
                        break;
                    case ConnectorOrientation.Right:
                        endPoint = new Point(sink.Position.X + marginPath, sink.Position.Y);
                        break;
                    case ConnectorOrientation.Bottom:
                        endPoint = new Point(sink.Position.X, sink.Position.Y + marginPath);
                        break;
                    default:
                        break;
                }
                linePoints.Insert(0, startPoint);
                linePoints.Add(endPoint);
            }
            else
            {
                linePoints.Insert(0, source.Position);
                linePoints.Add(sink.Position);
            }
        }
示例#6
0
        internal static List<Point> GetConnectionLine(ConnectorInfo source, ConnectorInfo sink, bool showLastLine)
        {
            List<Point> linePoints = new List<Point>();

            Rect rectSource = GetRectWithMargin(source, margin);
            Rect rectSink = GetRectWithMargin(sink, margin);

            Point startPoint = GetOffsetPoint(source, rectSource);
            Point endPoint = GetOffsetPoint(sink, rectSink);

            linePoints.Add(startPoint);
            Point currentPoint = startPoint;

            if (!rectSink.Contains(currentPoint) && !rectSource.Contains(endPoint))
            {
                while (true)
                {
                    #region source node

                    if (IsPointVisible(currentPoint, endPoint, new Rect[] { rectSource, rectSink }))
                    {
                        linePoints.Add(endPoint);
                        currentPoint = endPoint;
                        break;
                    }

                    Point neighbour = GetNearestVisibleNeighborSink(currentPoint, endPoint, sink, rectSource, rectSink);
                    if (!double.IsNaN(neighbour.X))
                    {
                        linePoints.Add(neighbour);
                        linePoints.Add(endPoint);
                        currentPoint = endPoint;
                        break;
                    }

                    if (currentPoint == startPoint)
                    {
                        bool flag;
                        Point n = GetNearestNeighborSource(source, endPoint, rectSource, rectSink, out flag);
                        linePoints.Add(n);
                        currentPoint = n;

                        if (!IsRectVisible(currentPoint, rectSink, new Rect[] { rectSource }))
                        {
                            Point n1, n2;
                            GetOppositeCorners(source.Orientation, rectSource, out n1, out n2);
                            if (flag)
                            {
                                linePoints.Add(n1);
                                currentPoint = n1;
                            }
                            else
                            {
                                linePoints.Add(n2);
                                currentPoint = n2;
                            }
                            if (!IsRectVisible(currentPoint, rectSink, new Rect[] { rectSource }))
                            {
                                if (flag)
                                {
                                    linePoints.Add(n2);
                                    currentPoint = n2;
                                }
                                else
                                {
                                    linePoints.Add(n1);
                                    currentPoint = n1;
                                }
                            }
                        }
                    }
                    #endregion

                    #region sink node

                    else // from here on we jump to the sink node
                    {
                        Point n1, n2; // neighbour corner
                        Point s1, s2; // opposite corner
                        GetNeighborCorners(sink.Orientation, rectSink, out s1, out s2);
                        GetOppositeCorners(sink.Orientation, rectSink, out n1, out n2);

                        bool n1Visible = IsPointVisible(currentPoint, n1, new Rect[] { rectSource, rectSink });
                        bool n2Visible = IsPointVisible(currentPoint, n2, new Rect[] { rectSource, rectSink });

                        if (n1Visible && n2Visible)
                        {
                            if (rectSource.Contains(n1))
                            {
                                linePoints.Add(n2);
                                if (rectSource.Contains(s2))
                                {
                                    linePoints.Add(n1);
                                    linePoints.Add(s1);
                                }
                                else
                                    linePoints.Add(s2);

                                linePoints.Add(endPoint);
                                currentPoint = endPoint;
                                break;
                            }

                            if (rectSource.Contains(n2))
                            {
                                linePoints.Add(n1);
                                if (rectSource.Contains(s1))
                                {
                                    linePoints.Add(n2);
                                    linePoints.Add(s2);
                                }
                                else
                                    linePoints.Add(s1);

                                linePoints.Add(endPoint);
                                currentPoint = endPoint;
                                break;
                            }

                            if ((Distance(n1, endPoint) <= Distance(n2, endPoint)))
                            {
                                linePoints.Add(n1);
                                if (rectSource.Contains(s1))
                                {
                                    linePoints.Add(n2);
                                    linePoints.Add(s2);
                                }
                                else
                                    linePoints.Add(s1);
                                linePoints.Add(endPoint);
                                currentPoint = endPoint;
                                break;
                            }
                            else
                            {
                                linePoints.Add(n2);
                                if (rectSource.Contains(s2))
                                {
                                    linePoints.Add(n1);
                                    linePoints.Add(s1);
                                }
                                else
                                    linePoints.Add(s2);
                                linePoints.Add(endPoint);
                                currentPoint = endPoint;
                                break;
                            }
                        }
                        else if (n1Visible)
                        {
                            linePoints.Add(n1);
                            if (rectSource.Contains(s1))
                            {
                                linePoints.Add(n2);
                                linePoints.Add(s2);
                            }
                            else
                                linePoints.Add(s1);
                            linePoints.Add(endPoint);
                            currentPoint = endPoint;
                            break;
                        }
                        else
                        {
                            linePoints.Add(n2);
                            if (rectSource.Contains(s2))
                            {
                                linePoints.Add(n1);
                                linePoints.Add(s1);
                            }
                            else
                                linePoints.Add(s2);
                            linePoints.Add(endPoint);
                            currentPoint = endPoint;
                            break;
                        }
                    }
                    #endregion
                }
            }
            else
            {
                linePoints.Add(endPoint);
            }

            linePoints = OptimizeLinePoints(linePoints, new Rect[] { rectSource, rectSink }, source.Orientation, sink.Orientation);

            CheckPathEnd(source, sink, showLastLine, linePoints);
            return linePoints;
        }
示例#7
0
        internal static List<Point> GetConnectionLine(ConnectorInfo source, Point sinkPoint, ConnectorOrientation preferredOrientation)
        {
            List<Point> linePoints = new List<Point>();
            Rect rectSource = GetRectWithMargin(source, 10);
            Point startPoint = GetOffsetPoint(source, rectSource);
            Point endPoint = sinkPoint;

            linePoints.Add(startPoint);
            Point currentPoint = startPoint;

            if (!rectSource.Contains(endPoint))
            {
                while (true)
                {
                    if (IsPointVisible(currentPoint, endPoint, new Rect[] { rectSource }))
                    {
                        linePoints.Add(endPoint);
                        break;
                    }

                    bool sideFlag;
                    Point n = GetNearestNeighborSource(source, endPoint, rectSource, out sideFlag);
                    linePoints.Add(n);
                    currentPoint = n;

                    if (IsPointVisible(currentPoint, endPoint, new Rect[] { rectSource }))
                    {
                        linePoints.Add(endPoint);
                        break;
                    }
                    else
                    {
                        Point n1, n2;
                        GetOppositeCorners(source.Orientation, rectSource, out n1, out n2);
                        if (sideFlag)
                            linePoints.Add(n1);
                        else
                            linePoints.Add(n2);

                        linePoints.Add(endPoint);
                        break;
                    }
                }
            }
            else
            {
                linePoints.Add(endPoint);
            }

            if (preferredOrientation != ConnectorOrientation.None)
                linePoints = OptimizeLinePoints(linePoints, new Rect[] { rectSource }, source.Orientation, preferredOrientation);
            else
                linePoints = OptimizeLinePoints(linePoints, new Rect[] { rectSource }, source.Orientation, GetOpositeOrientation(source.Orientation));

            return linePoints;
        }
示例#8
0
 internal ConnectorInfo GetInfo()
 {
     ConnectorInfo info = new ConnectorInfo();
     info.DesignerItemLeft = DesignerCanvas.GetLeft(this.ParentDesignerItem);
     info.DesignerItemTop = DesignerCanvas.GetTop(this.ParentDesignerItem);
     info.DesignerItemSize = new Size(this.ParentDesignerItem.ActualWidth, this.ParentDesignerItem.ActualHeight);
     info.Orientation = this.Orientation;
     info.Position = this.Position;
     return info;
 }