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richard-churchman
cc0a2bee21
Included open-source Accord.net library code natively to the solution given the deprecated state of that project. Accord.net will be supported inside Jube for own needs (such as upgrading to .Net 7+). Accord.net libraries modified to compile to .Net 6. Modified Accord.net libraries to better support Newtonsoft Json.net serialisation. Included annotations in the Accord.net libraries to house important dependency statistics. Serialised json can be used independently of Jube to recall a Neural Network. Removal of Binary Serializer totally as a precursor to the projects support of .Net 7+. Extensive bug fixing in crucial functions of Neural Network training and recall. While this part of the system remains in Alpha, it is substantially more fit for purpose.
64 lines
2.5 KiB
C#
64 lines
2.5 KiB
C#
// AForge Math Library
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// AForge.NET framework
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// http://www.aforgenet.com/framework/
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//
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// Copyright © AForge.NET, 2007-2011
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// [email protected]
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//
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namespace Accord.Math.Geometry
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{
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using System;
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/// <summary>
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/// Collection of some gemetry tool methods.
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/// </summary>
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///
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public static class GeometryTools
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{
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/// <summary>
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/// Calculate angle between to vectors measured in [0, 180] degrees range.
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/// </summary>
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///
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/// <param name="startPoint">Starting point of both vectors.</param>
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/// <param name="vector1end">Ending point of the first vector.</param>
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/// <param name="vector2end">Ending point of the second vector.</param>
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///
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/// <returns>Returns angle between specified vectors measured in degrees.</returns>
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///
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public static float GetAngleBetweenVectors( Point startPoint, Point vector1end, Point vector2end )
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{
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float x1 = vector1end.X - startPoint.X;
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float y1 = vector1end.Y - startPoint.Y;
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float x2 = vector2end.X - startPoint.X;
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float y2 = vector2end.Y - startPoint.Y;
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return (float) ( Math.Acos( ( x1 * x2 + y1 * y2 ) / ( Math.Sqrt( x1 * x1 + y1 * y1 ) * Math.Sqrt( x2 * x2 + y2 * y2 ) ) ) * 180.0 / Math.PI );
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}
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/// <summary>
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/// Calculate minimum angle between two lines measured in [0, 90] degrees range.
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/// </summary>
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///
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/// <param name="a1">A point on the first line.</param>
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/// <param name="a2">Another point on the first line.</param>
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/// <param name="b1">A point on the second line.</param>
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/// <param name="b2">Another point on the second line.</param>
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///
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/// <returns>Returns minimum angle between two lines.</returns>
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///
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/// <remarks><para><note>It is preferred to use <see cref="Line.GetAngleBetweenLines"/> if it is required to calculate angle
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/// multiple times for one of the lines.</note></para></remarks>
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///
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/// <exception cref="ArgumentException"><paramref name="a1"/> and <paramref name="a2"/> are the same,
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/// -OR- <paramref name="b1"/> and <paramref name="b2"/> are the same.</exception>
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///
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public static float GetAngleBetweenLines( Point a1, Point a2, Point b1, Point b2 )
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{
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Line line1 = Line.FromPoints( a1, a2 );
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return line1.GetAngleBetweenLines( Line.FromPoints( b1, b2 ) );
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}
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}
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}
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