921 lines
No EOL
30 KiB
C#
921 lines
No EOL
30 KiB
C#
using System;
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using System.Diagnostics;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Text.RegularExpressions;
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namespace OpenTK.Math
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{
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/// <summary>A 2-dimensional vector using double-precision floating point numbers.</summary>
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[Serializable]
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[StructLayout(LayoutKind.Sequential)]
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public struct Vector2d : IEquatable<Vector2d>, IComparer<Vector2d>, IComparable<Vector2d>
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{
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#region Fields & Access
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/// <summary>The X coordinate of the vector.</summary>
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public double X;
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/// <summary>The Y coordinate of the vector.</summary>
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public double Y;
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/// <summary>The coordinate at the index of the vector.</summary>
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public double this[int index]
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{
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get
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{
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switch (index)
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{
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case 0:
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return X;
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case 1:
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return Y;
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}
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throw new IndexOutOfRangeException();
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}
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set
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{
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switch (index)
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{
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case 0:
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X = value;
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return;
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case 1:
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Y = value;
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return;
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}
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throw new IndexOutOfRangeException();
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}
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}
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/// <summary>Converts the vector into an array of double-precision floating point numbers.</summary>
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/// <param name="vector">The vector being converted.</param>
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/// <returns>An array of double-precision floating point numbers representing the vector coordinates.</returns>
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public static explicit operator double[](Vector2d vector)
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{
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return new double[2] { vector.X, vector.Y };
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}
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/// <summary>Converts the vector into left double-precision floating point number pointer.</summary>
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/// <param name="vector">The vector being converted.</param>
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/// <returns>A double-precision floating point number pointer to the vector coordinates.</returns>
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unsafe public static explicit operator double*(Vector2d vector)
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{
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return &vector.X;
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}
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/// <summary>Converts the vector into an IntPtr.</summary>
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/// <param name="vector">The vector being converted.</param>
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/// <returns>An IntPtr to the vector coordinates.</returns>
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public static explicit operator IntPtr(Vector2d vector)
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{
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unsafe
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{
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return (IntPtr)(&vector.X);
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}
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}
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#endregion
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#region Constructors
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/// <summary>Constructs left vector with the given coordinates.</summary>
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/// <param name="x">The X coordinate.</param>
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/// <param name="y">The Y coordinate.</param>
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public Vector2d(double x, double y)
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{
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this.X = x;
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this.Y = y;
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}
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/// <summary>Constructs left vector with the same coordinates as the given vector.</summary>
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/// <param name="vector">The vector whose coordinates to copy.</param>
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public Vector2d(ref Vector2d vector)
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{
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this.X = vector.X;
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this.Y = vector.Y;
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}
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/// <summary>Constructs left vector from the given array of double-precision floating point numbers.</summary>
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/// <param name="doubleArray">The array of doubles for the coordinates of the vector.</param>
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public Vector2d(double[] coordinateArray)
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{
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if (coordinateArray == null || coordinateArray.GetLength(0) < 2) throw new Exception("Invalid parameter.");
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this.X = coordinateArray[0];
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this.Y = coordinateArray[1];
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}
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#endregion
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#region Equality
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/// <summary>Indicates whether the current vector is equal to another vector.</summary>
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/// <param name="vector">An vector to compare with this vector.</param>
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/// <returns>true if the current vector is equal to the vector parameter; otherwise, false.</returns>
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public bool Equals(Vector2d vector)
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{
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return
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X == vector.X &&
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Y == vector.Y;
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}
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/// <summary>Indicates whether the current vector is equal to another vector.</summary>
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/// <param name="vector">An vector to compare with this vector.</param>
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/// <returns>true if the current vector is equal to the vector parameter; otherwise, false.</returns>
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public bool Equals(ref Vector2d vector)
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{
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return
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X == vector.X &&
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Y == vector.Y;
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}
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/// <summary>Indicates whether two vectors are approximately equal to each other.</summary>
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/// <param name="matrix">The first vector.</param>
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/// <param name="right">The second vector.</param>
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/// <returns>true if the vectors are approximately equal; otherwise, false.</returns>
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public static bool Equals(ref Vector2d left, ref Vector2d right)
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{
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return
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left.X == right.X &&
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left.Y == right.Y;
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}
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/// <summary>Indicates whether the current vector is equal to another vector.</summary>
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/// <param name="vector">An vector to compare with this vector.</param>
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/// <returns>true if the current vector is equal to the vector parameter; otherwise, false.</returns>
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public bool EqualsApprox(ref Vector2d vector, double tolerance)
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{
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return
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System.Math.Abs(X - vector.X) <= tolerance &&
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System.Math.Abs(Y - vector.Y) <= tolerance;
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}
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/// <summary>Indicates whether two vectors are approximately equal to each other within left given tolerance.</summary>
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/// <param name="matrix">The first vector.</param>
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/// <param name="right">The second vector.</param>
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/// <param name="tolerance">The tolerance for the approximation.</param>
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/// <returns>true if the vectors are approximately equal; otherwise, false.</returns>
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public static bool EqualsApprox(ref Vector2d left, ref Vector2d right, double tolerance)
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{
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return
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System.Math.Abs(left.X - right.X) <= tolerance &&
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System.Math.Abs(left.Y - right.Y) <= tolerance;
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}
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#endregion
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#region IComparer
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/// <summary>Compares two vectors and returns left value indicating whether one is less than, equal to, or greater than the other.</summary>
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public int Compare(Vector2d left, Vector2d right)
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{
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if (left.X != right.X)
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{
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if (left.X < right.X) return -1;
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else return 1;
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}
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else if (left.Y != right.Y)
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{
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if (left.Y < right.Y) return -1;
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else return 1;
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}
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return 0;
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}
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#endregion
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#region IComparable
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/// <summary>Compares the vector with another vector and returns left value indicating whether it is less than, equal to, or greater than the other vector.</summary>
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public int CompareTo(Vector2d vector) { return Compare(this, vector); }
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#endregion
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#region Length
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/// <summary>Gets the length of the vector.</summary>
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public double Length
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{
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get
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{
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double lengthSquared = LengthSquared;
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if (lengthSquared == 1)
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{
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return 1;
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}
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else
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{
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return System.Math.Sqrt(lengthSquared);
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}
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}
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}
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/// <summary>Gets the squared length of the vector.</summary>
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public double LengthSquared
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{
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get
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{
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return X * X + Y * Y;
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}
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}
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/// <summary>Gets the approimate length of the vector.</summary>
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public double LengthApprox
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{
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get
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{
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return 1.0d / Functions.InverseSqrtFast(X * X + Y * Y);
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}
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}
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#endregion
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#region Distance
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/// <summary>Gets the distance from this vector to the given vector.</summary>
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/// <param name="vector">The vector to which to find the distance.</param>
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/// <returns>The distance from this vector to the given vector.</returns>
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public double DistanceTo(ref Vector2d vector)
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{
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double deltaX = vector.X - X;
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double deltaY = vector.Y - Y;
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return System.Math.Sqrt(deltaX * deltaX + deltaY * deltaY);
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}
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/// <summary>Gets the squared distance from this vector to the given vector.</summary>
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/// <param name="vector">The vector to which to find the squared distance.</param>
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/// <returns>The squared distance from this vector to the given vector.</returns>
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public double DistanceSquaredTo(ref Vector2d vector)
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{
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double deltaX = vector.X - X;
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double deltaY = vector.Y - Y;
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return deltaX * deltaX + deltaY * deltaY;
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}
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/// <summary>Gets the approximate distance from this vector to the given vector.</summary>
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/// <param name="vector">The vector to which to find the approximate distance.</param>
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/// <returns>The approximate distance from this vector to the given vector.</returns>
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public double DistanceApproxTo(ref Vector2d vector)
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{
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double deltaX = vector.X - X;
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double deltaY = vector.Y - Y;
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return 1.0d / Functions.InverseSqrtFast(deltaX * deltaX + deltaY * deltaY);
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}
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#endregion
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#region Normalize
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/// <summary>Normalize this vector.</summary>
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public void Normalize()
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{
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double lengthSquared = LengthSquared;
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if (lengthSquared != 1 && lengthSquared != 0)
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{
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double length = System.Math.Sqrt(lengthSquared);
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X = X / length;
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Y = Y / length;
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}
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}
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/// <summary>Get the normalized version of this vector.</summary>
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/// <param name="result">The resulting normalized vector.</param>
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public void Normalize(out Vector2d result)
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{
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double lengthSquared = LengthSquared;
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if (lengthSquared == 1)
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{
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result.X = X;
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result.Y = Y;
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}
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else if (lengthSquared == 0)
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{
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result.X = 0;
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result.Y = 0;
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}
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else
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{
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double length = System.Math.Sqrt(lengthSquared);
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result.X = X / length;
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result.Y = Y / length;
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}
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}
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public static void Normalize(ref Vector2d vector, out Vector2d result)
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{
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double lengthSquared = vector.LengthSquared;
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if (lengthSquared == 1)
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{
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result.X = vector.X;
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result.Y = vector.Y;
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}
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else if (lengthSquared == 0)
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{
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result.X = 0;
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result.Y = 0;
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}
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else
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{
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double length = System.Math.Sqrt(lengthSquared);
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result.X = vector.X / length;
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result.Y = vector.Y / length;
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}
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}
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public void NormalizeApprox()
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{
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double inverseSquare = Functions.InverseSqrtFast(X * X + Y * Y);
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X = X * inverseSquare;
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Y = Y * inverseSquare;
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}
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/// <summary>Gets left approximately normalized vector of the vector.</summary>
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public void NormalizedApprox(out Vector2d result)
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{
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double inverseSquare = Functions.InverseSqrtFast(X * X + Y * Y);
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result.X = X * inverseSquare;
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result.Y = Y * inverseSquare;
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}
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public static void NormalizeApprox(ref Vector2d vector, out Vector2d result)
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{
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double inverseSquare = Functions.InverseSqrtFast(vector.X * vector.X + vector.Y * vector.Y);
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result.X = vector.X * inverseSquare;
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result.Y = vector.Y * inverseSquare;
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}
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#endregion
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/// <summary>Gets the dot product of two vectors.</summary>
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/// <param name="matrix">The first vector.</param>
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/// <param name="right">The second vector.</param>
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/// <returns>The dot product of two vectors.</returns>
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public static double DotProduct(ref Vector2d left, ref Vector2d right)
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{
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return left.X * right.X + left.Y * right.Y;
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}
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#region Abs
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public void Abs()
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{
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X = System.Math.Abs(X);
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Y = System.Math.Abs(Y);
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}
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public void Abs(out Vector2d result)
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{
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result.X = System.Math.Abs(X);
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result.Y = System.Math.Abs(Y);
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}
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public static void Abs(ref Vector2d vector, out Vector2d result)
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{
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result.X = System.Math.Abs(vector.X);
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result.Y = System.Math.Abs(vector.Y);
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}
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#endregion
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#region Inverse
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public void Inverse()
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{
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X = -X;
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Y = -Y;
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}
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public void Inverse(out Vector2d result)
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{
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result.X = -X;
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result.Y = -Y;
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}
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public static void Inverse(ref Vector2d vector, out Vector2d result)
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{
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result.X = -vector.X;
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result.Y = -vector.Y;
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}
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#endregion
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#region Arithmatic
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public void Add(ref Vector2d vector)
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{
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X = X + vector.X;
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Y = Y + vector.Y;
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}
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public void Add(ref Vector2d vector, out Vector2d result)
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{
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result.X = X + vector.X;
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result.Y = Y + vector.Y;
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}
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public static void Add(ref Vector2d left, ref Vector2d right, out Vector2d result)
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{
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result.X = left.X + right.X;
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result.Y = left.Y + right.Y;
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}
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public void Add(double x, double y)
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{
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X = X + x;
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Y = Y + y;
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}
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public void Add(double x, double y, out Vector2d result)
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{
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result.X = X + x;
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result.Y = Y + y;
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}
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public static void Add(ref Vector2d vector, double x, double y, out Vector2d result)
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{
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result.X = vector.X + x;
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result.Y = vector.Y + y;
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}
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public void Subtract(ref Vector2d vector)
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{
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X = X - vector.X;
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Y = Y - vector.Y;
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}
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public void Subtract(ref Vector2d vector, out Vector2d result)
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{
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result.X = X - vector.X;
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result.Y = Y - vector.Y;
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}
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public static void Subtract(ref Vector2d left, ref Vector2d right, out Vector2d result)
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{
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result.X = left.X - right.X;
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result.Y = left.Y - right.Y;
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}
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public void Subtract(double x, double y)
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{
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X = X - x;
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Y = Y - y;
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}
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public void Subtract(double x, double y, out Vector2d result)
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{
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result.X = X - x;
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result.Y = Y - y;
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}
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public static void Subtract(ref Vector2d vector, double x, double y, out Vector2d result)
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{
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result.X = vector.X - x;
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result.Y = vector.Y - y;
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}
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public void Multiply(double scalar)
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{
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X = X * scalar;
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Y = Y * scalar;
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}
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public void Multiply(double scalar, out Vector2d result)
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{
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result.X = X * scalar;
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result.Y = Y * scalar;
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}
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public static void Multiply(ref Vector2d vector, double scalar, out Vector2d result)
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{
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result.X = vector.X * scalar;
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result.Y = vector.Y * scalar;
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}
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public void Multiply(ref Vector2d vector)
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{
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X = X * vector.X;
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Y = Y * vector.Y;
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}
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public void Multiply(ref Vector2d vector, out Vector2d result)
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{
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result.X = X * vector.X;
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result.Y = Y * vector.Y;
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}
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public static void Multiply(ref Vector2d left, ref Vector2d right, out Vector2d result)
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{
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result.X = left.X * right.X;
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result.Y = left.Y * right.Y;
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}
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public void Multiply(double x, double y)
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{
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X = X * x;
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Y = Y * y;
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}
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public void Multiply(double x, double y, out Vector2d result)
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{
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result.X = X * x;
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result.Y = Y * y;
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}
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public static void Multiply(ref Vector2d vector, double x, double y, out Vector2d result)
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{
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result.X = vector.X * x;
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result.Y = vector.Y * y;
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}
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public void Divide(double scalar)
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{
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X = X / scalar;
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Y = Y / scalar;
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}
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public void Divide(double scalar, out Vector2d result)
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{
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result.X = X / scalar;
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result.Y = Y / scalar;
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}
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public static void Divide(ref Vector2d vector, double scalar, out Vector2d result)
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{
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result.X = vector.X / scalar;
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result.Y = vector.Y / scalar;
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}
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public void Divide(ref Vector2d vector)
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{
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X = X / vector.X;
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Y = Y / vector.Y;
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}
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public void Divide(ref Vector2d vector, out Vector2d result)
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{
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result.X = X / vector.X;
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result.Y = Y / vector.Y;
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}
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public static void Divide(ref Vector2d left, ref Vector2d right, out Vector2d result)
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{
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result.X = left.X / right.X;
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result.Y = left.Y / right.Y;
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}
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public void Divide(double x, double y)
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{
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X = X / x;
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Y = Y / y;
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}
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public void Divide(double x, double y, out Vector2d result)
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{
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result.X = X / x;
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result.Y = Y / y;
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}
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public static void Divide(ref Vector2d vector, double x, double y, out Vector2d result)
|
|
{
|
|
result.X = vector.X / x;
|
|
result.Y = vector.Y / y;
|
|
}
|
|
|
|
#endregion
|
|
|
|
|
|
#region Transformations
|
|
|
|
public void Transform(ref Matrix4d matrix)
|
|
{
|
|
double x = matrix.R0C0 * X + matrix.R0C1 * Y;
|
|
Y = matrix.R1C0 * X + matrix.R1C1 * Y;
|
|
X = x;
|
|
}
|
|
public void Transform(ref Matrix4d matrix, out Vector2d result)
|
|
{
|
|
result.X = matrix.R0C0 * X + matrix.R0C1 * Y;
|
|
result.Y = matrix.R1C0 * X + matrix.R1C1 * Y;
|
|
}
|
|
public static void Transform(ref Vector2d vector, ref Matrix4d matrix, out Vector2d result)
|
|
{
|
|
result.X = matrix.R0C0 * vector.X + matrix.R0C1 * vector.Y;
|
|
result.Y = matrix.R1C0 * vector.X + matrix.R1C1 * vector.Y;
|
|
}
|
|
|
|
public void Translate(ref Vector2d vector)
|
|
{
|
|
X = X + vector.X;
|
|
Y = Y + vector.Y;
|
|
}
|
|
public void Translate(ref Vector2d vector, out Vector2d result)
|
|
{
|
|
result.X = X + vector.X;
|
|
result.Y = Y + vector.Y;
|
|
}
|
|
public static void Translate(ref Vector2d left, ref Vector2d right, out Vector2d result)
|
|
{
|
|
result.X = left.X + right.X;
|
|
result.Y = left.Y + right.Y;
|
|
}
|
|
|
|
public void Translate(double x, double y)
|
|
{
|
|
X = X + x;
|
|
Y = Y + y;
|
|
}
|
|
public void Translate(double x, double y, out Vector2d result)
|
|
{
|
|
result.X = X + x;
|
|
result.Y = Y + y;
|
|
}
|
|
public static void Translate(ref Vector2d vector, double x, double y, out Vector2d result)
|
|
{
|
|
result.X = vector.X + x;
|
|
result.Y = vector.Y + y;
|
|
}
|
|
|
|
public void Scale(ref Vector2d vector)
|
|
{
|
|
X = X * vector.X;
|
|
Y = Y * vector.Y;
|
|
}
|
|
public void Scale(ref Vector2d vector, out Vector2d result)
|
|
{
|
|
result.X = X * vector.X;
|
|
result.Y = Y * vector.Y;
|
|
}
|
|
public static void Scale(ref Vector2d left, ref Vector2d right, out Vector2d result)
|
|
{
|
|
result.X = left.X * right.X;
|
|
result.Y = left.Y * right.Y;
|
|
}
|
|
|
|
public void Scale(double x, double y)
|
|
{
|
|
X = X * x;
|
|
Y = Y * y;
|
|
}
|
|
public void Scale(double x, double y, out Vector2d result)
|
|
{
|
|
result.X = X * x;
|
|
result.Y = Y * y;
|
|
}
|
|
public static void Scale(ref Vector2d vector, double x, double y, out Vector2d result)
|
|
{
|
|
result.X = vector.X * x;
|
|
result.Y = vector.Y * y;
|
|
}
|
|
|
|
public void Rotate(double angle)
|
|
{
|
|
double angleRadians = Functions.DTOR * angle;
|
|
double sin = (double)System.Math.Sin(angleRadians);
|
|
double cos = (double)System.Math.Cos(angleRadians);
|
|
|
|
double x = cos * X + sin * Y;
|
|
Y = cos * Y - sin * X;
|
|
X = x;
|
|
}
|
|
public void Rotate(double angle, out Vector2d result)
|
|
{
|
|
double angleRadians = Functions.DTOR * angle;
|
|
double sin = (double)System.Math.Sin(angleRadians);
|
|
double cos = (double)System.Math.Cos(angleRadians);
|
|
|
|
result.X = cos * X + sin * Y;
|
|
result.Y = cos * Y - sin * X;
|
|
}
|
|
public static void Rotate(ref Vector2d vector, double angle, out Vector2d result)
|
|
{
|
|
double angleRadians = Functions.DTOR * angle;
|
|
double sin = (double)System.Math.Sin(angleRadians);
|
|
double cos = (double)System.Math.Cos(angleRadians);
|
|
|
|
result.X = cos * vector.X + sin * vector.Y;
|
|
result.Y = cos * vector.Y - sin * vector.X;
|
|
}
|
|
|
|
#endregion
|
|
|
|
|
|
#region Min & Max
|
|
|
|
public void Min(ref Vector2d vector)
|
|
{
|
|
double lengthSquared = X * X + Y * Y;
|
|
double vectorLengthSquared = vector.X * vector.X + vector.Y * vector.Y;
|
|
|
|
if (vectorLengthSquared < lengthSquared)
|
|
{
|
|
X = vector.X;
|
|
Y = vector.Y;
|
|
}
|
|
}
|
|
public void Min(ref Vector2d vector, out Vector2d result)
|
|
{
|
|
double lengthSquared = X * X + Y * Y;
|
|
double vectorLengthSquared = vector.X * vector.X + vector.Y * vector.Y;
|
|
|
|
if (vectorLengthSquared < lengthSquared)
|
|
{
|
|
result.X = vector.X;
|
|
result.Y = vector.Y;
|
|
}
|
|
else
|
|
{
|
|
result.X = X;
|
|
result.Y = Y;
|
|
}
|
|
}
|
|
public static void Min(ref Vector2d left, ref Vector2d right, out Vector2d result)
|
|
{
|
|
double leftLengthSquared = left.X * left.X + left.Y * left.Y;
|
|
double rightLengthSquared = right.X * right.X + right.Y * right.Y;
|
|
|
|
if (rightLengthSquared < leftLengthSquared)
|
|
{
|
|
result.X = right.X;
|
|
result.Y = right.Y;
|
|
}
|
|
else
|
|
{
|
|
result.X = left.X;
|
|
result.Y = left.Y;
|
|
}
|
|
}
|
|
|
|
public void Max(ref Vector2d vector)
|
|
{
|
|
double lengthSquared = X * X + Y * Y;
|
|
double vectorLengthSquared = vector.X * vector.X + vector.Y * vector.Y;
|
|
|
|
if (vectorLengthSquared > lengthSquared)
|
|
{
|
|
X = vector.X;
|
|
Y = vector.Y;
|
|
}
|
|
}
|
|
public void Max(ref Vector2d vector, out Vector2d result)
|
|
{
|
|
double lengthSquared = X * X + Y * Y;
|
|
double vectorLengthSquared = vector.X * vector.X + vector.Y * vector.Y;
|
|
|
|
if (vectorLengthSquared > lengthSquared)
|
|
{
|
|
result.X = vector.X;
|
|
result.Y = vector.Y;
|
|
}
|
|
else
|
|
{
|
|
result.X = X;
|
|
result.Y = Y;
|
|
}
|
|
}
|
|
public static void Max(ref Vector2d left, ref Vector2d right, out Vector2d result)
|
|
{
|
|
double leftLengthSquared = left.X * left.X + left.Y * left.Y;
|
|
double rightLengthSquared = right.X * right.X + right.Y * right.Y;
|
|
|
|
if (rightLengthSquared > leftLengthSquared)
|
|
{
|
|
result.X = right.X;
|
|
result.Y = right.Y;
|
|
}
|
|
else
|
|
{
|
|
result.X = left.X;
|
|
result.Y = left.Y;
|
|
}
|
|
}
|
|
|
|
public void CoordinateMin(ref Vector2d vector)
|
|
{
|
|
X = System.Math.Min(X, vector.X);
|
|
Y = System.Math.Min(Y, vector.Y);
|
|
}
|
|
public void CoordinateMin(ref Vector2d vector, out Vector2d result)
|
|
{
|
|
result.X = System.Math.Min(X, vector.X);
|
|
result.Y = System.Math.Min(Y, vector.Y);
|
|
}
|
|
public static void CoordinateMin(ref Vector2d left, ref Vector2d right, out Vector2d result)
|
|
{
|
|
result.X = System.Math.Min(left.X, right.X);
|
|
result.Y = System.Math.Min(left.Y, right.Y);
|
|
}
|
|
|
|
public void CoordinateMax(ref Vector2d vector)
|
|
{
|
|
X = System.Math.Max(X, vector.X);
|
|
Y = System.Math.Max(Y, vector.Y);
|
|
}
|
|
public void CoordinateMax(ref Vector2d vector, out Vector2d result)
|
|
{
|
|
result.X = System.Math.Max(X, vector.X);
|
|
result.Y = System.Math.Max(Y, vector.Y);
|
|
}
|
|
public static void CoordinateMax(ref Vector2d left, ref Vector2d right, out Vector2d result)
|
|
{
|
|
result.X = System.Math.Max(left.X, right.X);
|
|
result.Y = System.Math.Max(left.Y, right.Y);
|
|
}
|
|
|
|
public void Clamp(ref Vector2d min, ref Vector2d max)
|
|
{
|
|
X = System.Math.Max(System.Math.Min(X, min.X), max.X);
|
|
Y = System.Math.Max(System.Math.Min(Y, min.Y), max.Y);
|
|
}
|
|
public void Clamp(ref Vector2d min, ref Vector2d max, out Vector2d result)
|
|
{
|
|
result.X = System.Math.Max(System.Math.Min(X, min.X), max.X);
|
|
result.Y = System.Math.Max(System.Math.Min(Y, min.Y), max.Y);
|
|
}
|
|
public static void Clamp(ref Vector2d vector, ref Vector2d min, ref Vector2d max, out Vector2d result)
|
|
{
|
|
result.X = System.Math.Max(System.Math.Min(vector.X, min.X), max.X);
|
|
result.Y = System.Math.Max(System.Math.Min(vector.Y, min.Y), max.Y);
|
|
}
|
|
|
|
#endregion
|
|
|
|
|
|
#region Interpolation
|
|
|
|
public void Lerp(ref Vector2d end, double blend)
|
|
{
|
|
X = X + (end.X - X) * blend;
|
|
Y = Y + (end.Y - Y) * blend;
|
|
}
|
|
public void Lerp(ref Vector2d end, double blend, out Vector2d result)
|
|
{
|
|
result.X = X + (end.X - X) * blend;
|
|
result.Y = Y + (end.Y - Y) * blend;
|
|
}
|
|
public static void Lerp(ref Vector2d start, ref Vector2d end, double blend, out Vector2d result)
|
|
{
|
|
result.X = start.X + (end.X - start.X) * blend;
|
|
result.Y = start.Y + (end.Y - start.Y) * blend;
|
|
}
|
|
|
|
public void BaryCentric(ref Vector2d endU, ref Vector2d endV, double u, double v)
|
|
{
|
|
X = X + (endU.X - X) * u + (endV.X - X) * v;
|
|
Y = Y + (endU.Y - Y) * u + (endV.Y - Y) * v;
|
|
}
|
|
public void BaryCentric(ref Vector2d endU, ref Vector2d endV, double u, double v, out Vector2d result)
|
|
{
|
|
result.X = X + (endU.X - X) * u + (endV.X - X) * v;
|
|
result.Y = Y + (endU.Y - Y) * u + (endV.Y - Y) * v;
|
|
}
|
|
public static void BaryCentric(ref Vector2d start, ref Vector2d endU, ref Vector2d endV, double u, double v, out Vector2d result)
|
|
{
|
|
result.X = start.X + (endU.X - start.X) * u + (endV.X - start.X) * v;
|
|
result.Y = start.Y + (endU.Y - start.Y) * u + (endV.Y - start.Y) * v;
|
|
}
|
|
|
|
#endregion
|
|
|
|
|
|
#region String and Parse
|
|
|
|
/// <summary>Returns the fully qualified type name of this instance.</summary>
|
|
/// <returns>A System.String containing left fully qualified type name.</returns>
|
|
public override string ToString()
|
|
{
|
|
return String.Format("{0} {1} {2}", X, Y);
|
|
}
|
|
|
|
/// <summary>Parse left string to convert it to left vector.</summary>
|
|
/// <param name="str">The string to parse.</param>
|
|
/// <returns>The vector represented by the string.</returns>
|
|
public static void Parse(string str, out Vector2d result)
|
|
{
|
|
Match match = new Regex(@"(?<x>.*) (?<y>.*)", RegexOptions.None).Match(str);
|
|
if (!match.Success) throw new Exception("Parse failed!");
|
|
result.X = double.Parse(match.Result("${x}"));
|
|
result.Y = double.Parse(match.Result("${y}"));
|
|
}
|
|
|
|
#endregion
|
|
|
|
|
|
#region HashCode
|
|
|
|
/// <summary>Returns the hash code for this instance.</summary>
|
|
/// <returns>A 32-bit signed integer that is the hash code for this instance.</returns>
|
|
public override int GetHashCode()
|
|
{
|
|
return X.GetHashCode() ^ Y.GetHashCode();
|
|
}
|
|
|
|
#endregion
|
|
|
|
|
|
#region Constants
|
|
|
|
/// <summary>A vector representing left zero vector.</summary>
|
|
public static readonly Vector2d Zero = new Vector2d(0, 0);
|
|
|
|
/// <summary>A vector with all coordinates set to one.</summary>
|
|
public static readonly Vector2d One = new Vector2d(1, 1);
|
|
|
|
#endregion
|
|
}
|
|
} |