01a956eef6
Added new tech tree layout implementation using Microsoft Automatic Graph Layouts Added some functionality to the database editor tools
57 lines
2.9 KiB
C#
57 lines
2.9 KiB
C#
using System;
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namespace Microsoft.Msagl.GraphmapsWithMesh
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{
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class Angle
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{
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//compute the angle at A if it is less than pi/2, otherwise return pi/2
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/*TESTS
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Console.WriteLine("0 0, 1 1, 0 1" +Angle.getAngleIfSmallerThanPIby2(new Vertex(0, 0), new Vertex(1, 1), new Vertex(0, 1)));
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Console.WriteLine("0 0, -1 1, 0 1" + Angle.getAngleIfSmallerThanPIby2(new Vertex(0, 0), new Vertex(-1, 1), new Vertex(0, 1)));
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Console.WriteLine("0 0, -1 -1, 0 1" + Angle.getAngleIfSmallerThanPIby2(new Vertex(0, 0), new Vertex(-1, -1), new Vertex(0, 1)));
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Console.WriteLine("0 0, 1 -1, 0 1" + Angle.getAngleIfSmallerThanPIby2(new Vertex(0, 0), new Vertex(1, -1), new Vertex(0, 1)));
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Console.WriteLine("0 0, -1 1, 1 1" + Angle.getAngleIfSmallerThanPIby2(new Vertex(0, 0), new Vertex(-1, 1), new Vertex(1, 1)));
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Console.WriteLine("0 0, -1 -1, 1 1" + Angle.getAngleIfSmallerThanPIby2(new Vertex(0, 0), new Vertex(-1, -1), new Vertex(1, 1)));
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Console.WriteLine("0 0, 1 -1, 1 1" + Angle.getAngleIfSmallerThanPIby2(new Vertex(0, 0), new Vertex(1, -1), new Vertex(1, 1)));
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*/
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public static double getAngleIfSmallerThanPIby2(Vertex A, Vertex B, Vertex C)
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{
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double xDiff1 = A.XLoc - B.XLoc;
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double yDiff1 = A.YLoc - B.YLoc;
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double xDiff2 = A.XLoc - C.XLoc;
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double yDiff2 = A.YLoc - C.YLoc;
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if (B.XLoc >= A.XLoc && C.XLoc >= A.XLoc && B.YLoc >= A.YLoc && C.YLoc >= A.YLoc)
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return Math.Abs(Math.Atan2(yDiff1, xDiff1) - Math.Atan2(yDiff2, xDiff2));
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if (B.XLoc >= A.XLoc && C.XLoc <= A.XLoc && B.YLoc >= A.YLoc && C.YLoc <= A.YLoc)
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return Math.Abs(Math.Atan2(yDiff1, xDiff1) - Math.Atan2(yDiff2, xDiff2));
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if (B.XLoc <= A.XLoc && C.XLoc >= A.XLoc && B.YLoc <= A.YLoc && C.YLoc >= A.YLoc)
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return Math.Abs(Math.Atan2(yDiff1, xDiff1) - Math.Atan2(yDiff2, xDiff2));
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if (B.XLoc <= A.XLoc && C.XLoc <= A.XLoc && B.YLoc <= A.YLoc && C.YLoc <= A.YLoc)
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return Math.Abs(Math.Atan2(yDiff1, xDiff1) - Math.Atan2(yDiff2, xDiff2));
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return Math.PI / 2;//Abs(Math.Atan2(yDiff1, xDiff1) - Math.Atan2(yDiff2, xDiff2));
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}
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public static double getClockwiseAngle(Vertex A, Vertex B, Vertex C)
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{
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double xDiff1 = A.XLoc - B.XLoc;
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double yDiff1 = A.YLoc - B.YLoc;
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double xDiff2 = A.XLoc - C.XLoc;
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double yDiff2 = A.YLoc - C.YLoc;
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double dot = xDiff1 * xDiff2 + yDiff1 * yDiff2; // dot product
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double det = xDiff1 * yDiff2 - yDiff1 * xDiff2; // determinant
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double angle = Math.Atan2(det, dot); // atan2(y, x) or atan2(sin, cos)
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if (angle < 0) angle = 2 * Math.PI + angle;
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return Math.Abs(angle); // in degree*180/Math.PI;
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}
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}
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}
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