01a956eef6
Added new tech tree layout implementation using Microsoft Automatic Graph Layouts Added some functionality to the database editor tools
39 lines
1.7 KiB
C#
39 lines
1.7 KiB
C#
//
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// BasicObstacleSide.cs
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// MSAGL base class for ObstacleSides for Rectilinear Edge Routing.
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//
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// Copyright Microsoft Corporation.
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using Microsoft.Msagl.Core.Geometry.Curves;
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using Microsoft.Msagl.Routing.Spline.ConeSpanner;
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namespace Microsoft.Msagl.Routing.Rectilinear {
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/// <summary>
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/// BasicObstacleSide is base class for an obstacle side that is to the low or high end of the
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/// scanline-parallel coordinate, and knows which direction to traverse to find the endVertex.
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/// This is different from RightObstacleSide or LeftObstacleSide, where the class itself is the
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/// determinant of traversal direction being with or opposite to the clockwise polyline direction;
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/// BasicObstacleSide uses the ctor arg traverseClockwise to manage that.
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/// </summary>
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internal abstract class BasicObstacleSide : ObstacleSide {
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internal Obstacle Obstacle { get; private set; }
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readonly PolylinePoint endVertex;
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internal double Slope { get; private set; }
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internal double SlopeInverse { get; private set; }
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internal BasicObstacleSide(Obstacle obstacle, PolylinePoint startVertex, ScanDirection scanDir, bool traverseClockwise)
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: base(startVertex)
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{
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Obstacle = obstacle;
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endVertex = traverseClockwise ? startVertex.NextOnPolyline : startVertex.PrevOnPolyline;
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if (!scanDir.IsPerpendicular(startVertex.Point, endVertex.Point))
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{
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Slope = StaticGraphUtility.Slope(startVertex.Point, endVertex.Point, scanDir);
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SlopeInverse = 1.0 / Slope;
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}
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}
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internal override PolylinePoint EndVertex {
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get { return endVertex; }
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}
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}
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}
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