mirror of
https://gitee.com/akwkevin/aistudio.-wpf.-diagram
synced 2026-04-05 16:56:34 +08:00
画线优化基本完成
This commit is contained in:
艾竹
@@ -0,0 +1,648 @@
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using System;
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using System.Collections.Generic;
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using System.Text;
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using AIStudio.Wpf.DiagramDesigner.Geometrys;
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namespace AIStudio.Wpf.DiagramDesigner
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{
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public static partial class PathGenerators
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{
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public static PathGeneratorResult Corner(IDiagramViewModel _, ConnectorViewModel link, PointBase[] route, PointBase source, PointBase target)
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{
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route = ConcatRouteAndSourceAndTarget(route, source, target);
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if (route.Length > 2)
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return CurveThroughPoints(route, link);
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if (link.IsFullConnection)
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route = GetRouteWithFullConnectionLine(_, link, route);
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else
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route = GetRouteWithPartConnectionLine(_, link, route);
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double? sourceAngle = null;
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double? targetAngle = null;
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sourceAngle = SourceMarkerAdjustement(route, link.ColorViewModel.LeftArrowPathStyle == ArrowPathStyle.None ? 0d : (double)link.ColorViewModel.LeftArrowSizeStyle);
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targetAngle = TargetMarkerAdjustement(route, link.ColorViewModel.RightArrowPathStyle == ArrowPathStyle.None ? 0d : (double)link.ColorViewModel.RightArrowPathStyle);
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DoShift(route, link);
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var paths = new string[route.Length - 1];
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for (var i = 0; i < route.Length - 1; i++)
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{
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paths[i] = FormattableString.Invariant($"M {route[i].X} {route[i].Y} L {route[i + 1].X} {route[i + 1].Y}");
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}
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return new PathGeneratorResult(paths, sourceAngle, route[0], targetAngle, route[route.Length - 1]);
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}
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private const int const_margin = 20;
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private static PointBase[] GetRouteWithFullConnectionLine(IDiagramViewModel _, ConnectorViewModel link, PointBase[] route)
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{
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var sourceInnerPoint = link.SourceConnectorInfo.IsInnerPoint;
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PointBase sourcePoint = link.SourceConnectorInfo.Location.MiddlePosition;
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PointBase sinkPoint = link.SinkConnectorInfo.Location.MiddlePosition;
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ConnectorOrientation sourceOrientation = link.SourceConnectorInfo.Orientation;
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ConnectorOrientation sinkOrientation = link.SinkConnectorInfoFully.Orientation;
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List<PointBase> linePoints = new List<PointBase>();
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int margin1 = sourceInnerPoint ? 0 : const_margin;
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int margin2 = const_margin;
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RectangleBase rectSource = GetRectWithMargin(sourcePoint, margin1);
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RectangleBase rectSink = GetRectWithMargin(sinkPoint, margin2);
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PointBase startPoint = GetOffsetPoint(sourcePoint, sourceOrientation, rectSource, sourceInnerPoint);
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PointBase endPoint = GetOffsetPoint(sinkPoint, sinkOrientation, rectSink);
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linePoints.Add(startPoint);
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PointBase currentPoint = startPoint;
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if (!rectSink.Contains(currentPoint) && !rectSource.Contains(endPoint))
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{
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while (true)
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{
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#region source node
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if (IsPointVisible(currentPoint, endPoint, new RectangleBase[] { rectSource, rectSink }))
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{
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linePoints.Add(endPoint);
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currentPoint = endPoint;
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break;
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}
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PointBase neighbour = GetNearestVisibleNeighborSink(currentPoint, endPoint, sinkOrientation, rectSource, rectSink);
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if (!double.IsNaN(neighbour.X))
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{
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linePoints.Add(neighbour);
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linePoints.Add(endPoint);
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currentPoint = endPoint;
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break;
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}
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if (currentPoint == startPoint)
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{
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bool flag;
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PointBase n = GetNearestNeighborSource(sourceOrientation, endPoint, rectSource, rectSink, out flag, sourceInnerPoint);
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if (linePoints.Contains(n))
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{
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break;
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}
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linePoints.Add(n);
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currentPoint = n;
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if (!IsRectVisible(currentPoint, rectSink, new RectangleBase[] { rectSource }))
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{
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PointBase n1, n2;
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GetOppositeCorners(sourceOrientation, rectSource, out n1, out n2, sourceInnerPoint);
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if (flag)
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{
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linePoints.Add(n1);
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currentPoint = n1;
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}
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else
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{
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linePoints.Add(n2);
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currentPoint = n2;
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}
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if (!IsRectVisible(currentPoint, rectSink, new RectangleBase[] { rectSource }))
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{
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if (flag)
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{
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linePoints.Add(n2);
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currentPoint = n2;
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}
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else
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{
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linePoints.Add(n1);
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currentPoint = n1;
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}
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}
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}
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}
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#endregion
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#region sink node
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else // from here on we jump to the sink node
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{
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PointBase n1, n2; // neighbour corner
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PointBase s1, s2; // opposite corner
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GetNeighborCorners(sinkOrientation, rectSink, out s1, out s2);
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GetOppositeCorners(sinkOrientation, rectSink, out n1, out n2);
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bool n1Visible = IsPointVisible(currentPoint, n1, new RectangleBase[] { rectSource, rectSink });
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bool n2Visible = IsPointVisible(currentPoint, n2, new RectangleBase[] { rectSource, rectSink });
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if (n1Visible && n2Visible)
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{
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if (rectSource.Contains(n1))
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{
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linePoints.Add(n2);
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if (rectSource.Contains(s2))
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{
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linePoints.Add(n1);
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linePoints.Add(s1);
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}
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else
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linePoints.Add(s2);
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linePoints.Add(endPoint);
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currentPoint = endPoint;
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break;
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}
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if (rectSource.Contains(n2))
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{
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linePoints.Add(n1);
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if (rectSource.Contains(s1))
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{
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linePoints.Add(n2);
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linePoints.Add(s2);
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}
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else
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linePoints.Add(s1);
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linePoints.Add(endPoint);
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currentPoint = endPoint;
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break;
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}
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if ((Distance(n1, endPoint) <= Distance(n2, endPoint)))
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{
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linePoints.Add(n1);
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if (rectSource.Contains(s1))
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{
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linePoints.Add(n2);
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linePoints.Add(s2);
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}
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else
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linePoints.Add(s1);
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linePoints.Add(endPoint);
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currentPoint = endPoint;
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break;
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}
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else
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{
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linePoints.Add(n2);
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if (rectSource.Contains(s2))
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{
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linePoints.Add(n1);
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linePoints.Add(s1);
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}
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else
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linePoints.Add(s2);
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linePoints.Add(endPoint);
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currentPoint = endPoint;
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break;
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}
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}
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else if (n1Visible)
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{
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linePoints.Add(n1);
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if (rectSource.Contains(s1))
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{
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linePoints.Add(n2);
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linePoints.Add(s2);
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}
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else
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linePoints.Add(s1);
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linePoints.Add(endPoint);
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currentPoint = endPoint;
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break;
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}
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else
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{
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linePoints.Add(n2);
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if (rectSource.Contains(s2))
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{
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linePoints.Add(n1);
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linePoints.Add(s1);
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}
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else
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linePoints.Add(s2);
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linePoints.Add(endPoint);
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currentPoint = endPoint;
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break;
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}
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}
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#endregion
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}
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}
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else
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{
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linePoints.Add(endPoint);
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}
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linePoints = OptimizeLinePoints(linePoints, new RectangleBase[] { rectSource, rectSink }, sourceOrientation, sinkOrientation);
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linePoints.Insert(0, sourcePoint);
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linePoints.Add(sinkPoint);
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return linePoints.ToArray();
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}
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private static PointBase[] GetRouteWithPartConnectionLine(IDiagramViewModel diagramViewModel, ConnectorViewModel link, PointBase[] route)
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{
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var sourceInnerPoint = link.SourceConnectorInfo.IsInnerPoint;
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PointBase sourcePoint = link.SourceConnectorInfo.Location.MiddlePosition;
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PointBase sinkPoint = link.SinkConnectorInfo.Location.MiddlePosition;
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ConnectorOrientation sourceOrientation = link.SourceConnectorInfo.Orientation;
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ConnectorOrientation preferredOrientation = link.SourceConnectorInfo.Orientation;
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List<PointBase> linePoints = new List<PointBase>();
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int margin = sourceInnerPoint ? 0 : const_margin;
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RectangleBase rectSource = GetRectWithMargin(sourcePoint, margin);
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PointBase startPoint = GetOffsetPoint(sourcePoint, sourceOrientation, rectSource, sourceInnerPoint);
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PointBase endPoint = sinkPoint;
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linePoints.Add(startPoint);
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PointBase currentPoint = startPoint;
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if (!rectSource.Contains(endPoint))
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{
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while (true)
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{
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if (IsPointVisible(currentPoint, endPoint, new RectangleBase[] { rectSource }))
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{
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linePoints.Add(endPoint);
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break;
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}
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bool sideFlag;
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PointBase n = GetNearestNeighborSource(sourceOrientation, endPoint, rectSource, out sideFlag, sourceInnerPoint);
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linePoints.Add(n);
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currentPoint = n;
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if (IsPointVisible(currentPoint, endPoint, new RectangleBase[] { rectSource }))
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{
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linePoints.Add(endPoint);
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break;
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}
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else
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{
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PointBase n1, n2;
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GetOppositeCorners(sourceOrientation, rectSource, out n1, out n2, sourceInnerPoint);
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if (sideFlag)
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linePoints.Add(n1);
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else
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linePoints.Add(n2);
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linePoints.Add(endPoint);
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break;
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}
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}
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}
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else
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{
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linePoints.Add(endPoint);
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}
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if (preferredOrientation != ConnectorOrientation.None)
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linePoints = OptimizeLinePoints(linePoints, new RectangleBase[] { rectSource }, sourceOrientation, preferredOrientation);
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else
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linePoints = OptimizeLinePoints(linePoints, new RectangleBase[] { rectSource }, sourceOrientation, GetOpositeOrientation(sourceOrientation));
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linePoints.Insert(0, sourcePoint);
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return linePoints.ToArray();
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}
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private static List<PointBase> OptimizeLinePoints(List<PointBase> linePoints, RectangleBase[] rectangles, ConnectorOrientation sourceOrientation, ConnectorOrientation sinkOrientation)
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{
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List<PointBase> points = new List<PointBase>();
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int cut = 0;
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for (int i = 0; i < linePoints.Count; i++)
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{
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if (i >= cut)
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{
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for (int k = linePoints.Count - 1; k > i; k--)
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{
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if (IsPointVisible(linePoints[i], linePoints[k], rectangles))
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{
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cut = k;
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break;
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}
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}
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points.Add(linePoints[i]);
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}
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}
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#region Line
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for (int j = 0; j < points.Count - 1; j++)
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{
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if (points[j].X != points[j + 1].X && points[j].Y != points[j + 1].Y)
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{
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ConnectorOrientation orientationFrom;
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ConnectorOrientation orientationTo;
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// orientation from point
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if (j == 0)
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orientationFrom = sourceOrientation;
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else
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orientationFrom = GetOrientation(points[j], points[j - 1]);
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// orientation to pint
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if (j == points.Count - 2)
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orientationTo = sinkOrientation;
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else
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orientationTo = GetOrientation(points[j + 1], points[j + 2]);
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if ((orientationFrom == ConnectorOrientation.Left || orientationFrom == ConnectorOrientation.Right) &&
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(orientationTo == ConnectorOrientation.Left || orientationTo == ConnectorOrientation.Right))
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{
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double centerX = Math.Min(points[j].X, points[j + 1].X) + Math.Abs(points[j].X - points[j + 1].X) / 2;
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points.Insert(j + 1, new PointBase(centerX, points[j].Y));
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points.Insert(j + 2, new PointBase(centerX, points[j + 2].Y));
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if (points.Count - 1 > j + 3)
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points.RemoveAt(j + 3);
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return points;
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}
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if ((orientationFrom == ConnectorOrientation.Top || orientationFrom == ConnectorOrientation.Bottom) &&
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(orientationTo == ConnectorOrientation.Top || orientationTo == ConnectorOrientation.Bottom))
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{
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double centerY = Math.Min(points[j].Y, points[j + 1].Y) + Math.Abs(points[j].Y - points[j + 1].Y) / 2;
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points.Insert(j + 1, new PointBase(points[j].X, centerY));
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points.Insert(j + 2, new PointBase(points[j + 2].X, centerY));
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if (points.Count - 1 > j + 3)
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points.RemoveAt(j + 3);
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return points;
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}
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if ((orientationFrom == ConnectorOrientation.Left || orientationFrom == ConnectorOrientation.Right) &&
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(orientationTo == ConnectorOrientation.Top || orientationTo == ConnectorOrientation.Bottom))
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{
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points.Insert(j + 1, new PointBase(points[j + 1].X, points[j].Y));
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return points;
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}
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if ((orientationFrom == ConnectorOrientation.Top || orientationFrom == ConnectorOrientation.Bottom) &&
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(orientationTo == ConnectorOrientation.Left || orientationTo == ConnectorOrientation.Right))
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{
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points.Insert(j + 1, new PointBase(points[j].X, points[j + 1].Y));
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return points;
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}
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}
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}
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#endregion
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return points;
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}
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private static ConnectorOrientation GetOrientation(PointBase p1, PointBase p2)
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{
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if (p1.X == p2.X)
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{
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if (p1.Y >= p2.Y)
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return ConnectorOrientation.Bottom;
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else
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return ConnectorOrientation.Top;
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}
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else if (p1.Y == p2.Y)
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{
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if (p1.X >= p2.X)
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return ConnectorOrientation.Right;
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else
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return ConnectorOrientation.Left;
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}
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throw new Exception("Failed to retrieve orientation");
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}
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private static PointBase GetNearestNeighborSource(ConnectorOrientation orientation, PointBase endPoint, RectangleBase rectSource, RectangleBase rectSink, out bool flag, bool isInnerPoint)
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{
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PointBase n1, n2; // neighbors
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GetNeighborCorners(orientation, rectSource, out n1, out n2, isInnerPoint);
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if (rectSink.Contains(n1))
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{
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flag = false;
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return n2;
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}
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if (rectSink.Contains(n2))
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{
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flag = true;
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return n1;
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}
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if ((Distance(n1, endPoint) <= Distance(n2, endPoint)))
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{
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flag = true;
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return n1;
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}
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else
|
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{
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flag = false;
|
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return n2;
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}
|
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}
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private static PointBase GetNearestNeighborSource(ConnectorOrientation orientation, PointBase endPoint, RectangleBase rectSource, out bool flag, bool isInnerPoint)
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{
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PointBase n1, n2; // neighbors
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GetNeighborCorners(orientation, rectSource, out n1, out n2, isInnerPoint);
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if ((Distance(n1, endPoint) <= Distance(n2, endPoint)))
|
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{
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flag = true;
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return n1;
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}
|
||||
else
|
||||
{
|
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flag = false;
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return n2;
|
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}
|
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}
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private static PointBase GetNearestVisibleNeighborSink(PointBase currentPoint, PointBase endPoint, ConnectorOrientation orientation, RectangleBase rectSource, RectangleBase rectSink)
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{
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PointBase s1, s2; // neighbors on sink side
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GetNeighborCorners(orientation, rectSink, out s1, out s2);
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|
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bool flag1 = IsPointVisible(currentPoint, s1, new RectangleBase[] { rectSource, rectSink });
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bool flag2 = IsPointVisible(currentPoint, s2, new RectangleBase[] { rectSource, rectSink });
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if (flag1) // s1 visible
|
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{
|
||||
if (flag2) // s1 and s2 visible
|
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{
|
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if (rectSink.Contains(s1))
|
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return s2;
|
||||
|
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if (rectSink.Contains(s2))
|
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return s1;
|
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|
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if ((Distance(s1, endPoint) <= Distance(s2, endPoint)))
|
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return s1;
|
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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 PointBase(double.NaN, double.NaN);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static bool IsPointVisible(PointBase fromPoint, PointBase targetPoint, RectangleBase[] rectangles)
|
||||
{
|
||||
foreach (RectangleBase rect in rectangles)
|
||||
{
|
||||
if (RectangleIntersectsLine(rect, fromPoint, targetPoint))
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
private static bool IsRectVisible(PointBase fromPoint, RectangleBase targetRect, RectangleBase[] rectangles)
|
||||
{
|
||||
if (IsPointVisible(fromPoint, targetRect.TopLeft, rectangles))
|
||||
return true;
|
||||
|
||||
if (IsPointVisible(fromPoint, targetRect.TopRight, rectangles))
|
||||
return true;
|
||||
|
||||
if (IsPointVisible(fromPoint, targetRect.BottomLeft, rectangles))
|
||||
return true;
|
||||
|
||||
if (IsPointVisible(fromPoint, targetRect.BottomRight, rectangles))
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
private static bool RectangleIntersectsLine(RectangleBase rect, PointBase startPoint, PointBase endPoint)
|
||||
{
|
||||
rect.Inflate(-1, -1);
|
||||
return rect.IntersectsWith(new RectangleBase(startPoint, endPoint));
|
||||
}
|
||||
|
||||
private static void GetOppositeCorners(ConnectorOrientation orientation, RectangleBase rect, out PointBase n1, out PointBase n2, bool isInnerPoint = false)
|
||||
{
|
||||
if (isInnerPoint)
|
||||
{
|
||||
n1 = rect.Location; n2 = rect.Location;
|
||||
return;
|
||||
}
|
||||
switch (orientation)
|
||||
{
|
||||
case ConnectorOrientation.Left:
|
||||
n1 = rect.TopRight; n2 = rect.BottomRight;
|
||||
break;
|
||||
case ConnectorOrientation.Top:
|
||||
n1 = rect.BottomLeft; n2 = rect.BottomRight;
|
||||
break;
|
||||
case ConnectorOrientation.Right:
|
||||
n1 = rect.TopLeft; n2 = rect.BottomLeft;
|
||||
break;
|
||||
case ConnectorOrientation.Bottom:
|
||||
n1 = rect.TopLeft; n2 = rect.TopRight;
|
||||
break;
|
||||
default:
|
||||
throw new Exception("No opposite corners found!");
|
||||
}
|
||||
}
|
||||
|
||||
private static void GetNeighborCorners(ConnectorOrientation orientation, RectangleBase rect, out PointBase n1, out PointBase n2, bool isInnerPoint = false)
|
||||
{
|
||||
if (isInnerPoint)
|
||||
{
|
||||
n1 = rect.Location; n2 = rect.Location;
|
||||
return;
|
||||
}
|
||||
switch (orientation)
|
||||
{
|
||||
case ConnectorOrientation.Left:
|
||||
n1 = rect.TopLeft; n2 = rect.BottomLeft;
|
||||
break;
|
||||
case ConnectorOrientation.Top:
|
||||
n1 = rect.TopLeft; n2 = rect.TopRight;
|
||||
break;
|
||||
case ConnectorOrientation.Right:
|
||||
n1 = rect.TopRight; n2 = rect.BottomRight;
|
||||
break;
|
||||
case ConnectorOrientation.Bottom:
|
||||
n1 = rect.BottomLeft; n2 = rect.BottomRight;
|
||||
break;
|
||||
default:
|
||||
throw new Exception("No neighour corners found!");
|
||||
}
|
||||
}
|
||||
|
||||
private static double Distance(PointBase p1, PointBase p2)
|
||||
{
|
||||
return PointBase.Subtract(p1, p2).Length;
|
||||
}
|
||||
|
||||
private static RectangleBase GetRectWithMargin(PointBase point, double margin)
|
||||
{
|
||||
RectangleBase rect = new RectangleBase(point.X, point.Y, 0, 0);
|
||||
rect.Inflate(margin, margin);
|
||||
|
||||
return rect;
|
||||
}
|
||||
|
||||
private static PointBase GetOffsetPoint(PointBase point, ConnectorOrientation orientation, RectangleBase rect, bool isInnerPoint = false)
|
||||
{
|
||||
PointBase offsetPoint = new PointBase();
|
||||
if (isInnerPoint)
|
||||
{
|
||||
offsetPoint = new PointBase(point.X, point.Y);
|
||||
return offsetPoint;
|
||||
}
|
||||
|
||||
switch (orientation)
|
||||
{
|
||||
case ConnectorOrientation.Left:
|
||||
offsetPoint = new PointBase(rect.Left, point.Y);
|
||||
break;
|
||||
case ConnectorOrientation.Top:
|
||||
offsetPoint = new PointBase(point.X, rect.Top);
|
||||
break;
|
||||
case ConnectorOrientation.Right:
|
||||
offsetPoint = new PointBase(rect.Right, point.Y);
|
||||
break;
|
||||
case ConnectorOrientation.Bottom:
|
||||
offsetPoint = new PointBase(point.X, rect.Bottom);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return offsetPoint;
|
||||
}
|
||||
|
||||
private static ConnectorOrientation GetOpositeOrientation(ConnectorOrientation connectorOrientation)
|
||||
{
|
||||
switch (connectorOrientation)
|
||||
{
|
||||
case ConnectorOrientation.Left:
|
||||
return ConnectorOrientation.Right;
|
||||
case ConnectorOrientation.Top:
|
||||
return ConnectorOrientation.Bottom;
|
||||
case ConnectorOrientation.Right:
|
||||
return ConnectorOrientation.Left;
|
||||
case ConnectorOrientation.Bottom:
|
||||
return ConnectorOrientation.Top;
|
||||
default:
|
||||
return ConnectorOrientation.Top;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user
