323 lines
13 KiB
C#
323 lines
13 KiB
C#
// Copyright (c) Microsoft. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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using System.Runtime.CompilerServices;
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namespace System.Numerics
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{
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// This file contains the definitions for all of the JIT intrinsic methods and properties that are recognized by the current x64 JIT compiler.
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// The implementation defined here is used in any circumstance where the JIT fails to recognize these members as intrinsic.
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// The JIT recognizes these methods and properties by name and signature: if either is changed, the JIT will no longer recognize the member.
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// Some methods declared here are not strictly intrinsic, but delegate to an intrinsic method. For example, only one overload of CopyTo()
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// is actually recognized by the JIT, but both are here for simplicity.
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public partial struct Vector3
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{
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/// <summary>
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/// The X component of the vector.
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/// </summary>
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public Single X;
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/// <summary>
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/// The Y component of the vector.
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/// </summary>
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public Single Y;
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/// <summary>
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/// The Z component of the vector.
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/// </summary>
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public Single Z;
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#region Constructors
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/// <summary>
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/// Constructs a vector whose elements are all the single specified value.
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/// </summary>
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/// <param name="value">The element to fill the vector with.</param>
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[JitIntrinsic]
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public Vector3(Single value) : this(value, value, value) { }
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/// <summary>
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/// Constructs a Vector3 from the given Vector2 and a third value.
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/// </summary>
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/// <param name="value">The Vector to extract X and Y components from.</param>
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/// <param name="z">The Z component.</param>
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public Vector3(Vector2 value, float z) : this(value.X, value.Y, z) { }
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/// <summary>
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/// Constructs a vector with the given individual elements.
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/// </summary>
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/// <param name="x">The X component.</param>
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/// <param name="y">The Y component.</param>
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/// <param name="z">The Z component.</param>
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[JitIntrinsic]
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public Vector3(Single x, Single y, Single z)
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{
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X = x;
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Y = y;
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Z = z;
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}
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#endregion Constructors
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#region Public Instance Methods
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/// <summary>
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/// Copies the contents of the vector into the given array.
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/// </summary>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void CopyTo(Single[] array)
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{
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CopyTo(array, 0);
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}
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/// <summary>
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/// Copies the contents of the vector into the given array, starting from index.
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/// </summary>
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/// <exception cref="ArgumentNullException">If array is null.</exception>
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/// <exception cref="RankException">If array is multidimensional.</exception>
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/// <exception cref="ArgumentOutOfRangeException">If index is greater than end of the array or index is less than zero.</exception>
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/// <exception cref="ArgumentException">If number of elements in source vector is greater than those available in destination array.</exception>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void CopyTo(Single[] array, int index)
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{
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if (array == null)
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{
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// Match the JIT's exception type here. For perf, a NullReference is thrown instead of an ArgumentNull.
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throw new NullReferenceException(SR.GetString("Arg_NullArgumentNullRef"));
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}
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if (index < 0 || index >= array.Length)
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{
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throw new ArgumentOutOfRangeException(SR.GetString("Arg_ArgumentOutOfRangeException", index));
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}
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if ((array.Length - index) < 3)
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{
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throw new ArgumentException(SR.GetString("Arg_ElementsInSourceIsGreaterThanDestination", index));
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}
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array[index] = X;
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array[index + 1] = Y;
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array[index + 2] = Z;
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}
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/// <summary>
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/// Returns a boolean indicating whether the given Vector3 is equal to this Vector3 instance.
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/// </summary>
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/// <param name="other">The Vector3 to compare this instance to.</param>
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/// <returns>True if the other Vector3 is equal to this instance; False otherwise.</returns>
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[JitIntrinsic]
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public bool Equals(Vector3 other)
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{
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return X == other.X &&
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Y == other.Y &&
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Z == other.Z;
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}
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#endregion Public Instance Methods
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#region Public Static Methods
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/// <summary>
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/// Returns the dot product of two vectors.
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/// </summary>
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/// <param name="vector1">The first vector.</param>
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/// <param name="vector2">The second vector.</param>
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/// <returns>The dot product.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static float Dot(Vector3 vector1, Vector3 vector2)
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{
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return vector1.X * vector2.X +
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vector1.Y * vector2.Y +
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vector1.Z * vector2.Z;
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}
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/// <summary>
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/// Returns a vector whose elements are the minimum of each of the pairs of elements in the two source vectors.
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/// </summary>
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/// <param name="value1">The first source vector.</param>
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/// <param name="value2">The second source vector.</param>
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/// <returns>The minimized vector.</returns>
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[JitIntrinsic]
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public static Vector3 Min(Vector3 value1, Vector3 value2)
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{
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return new Vector3(
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(value1.X < value2.X) ? value1.X : value2.X,
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(value1.Y < value2.Y) ? value1.Y : value2.Y,
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(value1.Z < value2.Z) ? value1.Z : value2.Z);
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}
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/// <summary>
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/// Returns a vector whose elements are the maximum of each of the pairs of elements in the two source vectors.
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/// </summary>
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/// <param name="value1">The first source vector.</param>
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/// <param name="value2">The second source vector.</param>
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/// <returns>The maximized vector.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 Max(Vector3 value1, Vector3 value2)
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{
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return new Vector3(
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(value1.X > value2.X) ? value1.X : value2.X,
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(value1.Y > value2.Y) ? value1.Y : value2.Y,
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(value1.Z > value2.Z) ? value1.Z : value2.Z);
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}
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/// <summary>
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/// Returns a vector whose elements are the absolute values of each of the source vector's elements.
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/// </summary>
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/// <param name="value">The source vector.</param>
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/// <returns>The absolute value vector.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 Abs(Vector3 value)
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{
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return new Vector3(Math.Abs(value.X), Math.Abs(value.Y), Math.Abs(value.Z));
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}
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/// <summary>
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/// Returns a vector whose elements are the square root of each of the source vector's elements.
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/// </summary>
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/// <param name="value">The source vector.</param>
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/// <returns>The square root vector.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 SquareRoot(Vector3 value)
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{
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return new Vector3((Single)Math.Sqrt(value.X), (Single)Math.Sqrt(value.Y), (Single)Math.Sqrt(value.Z));
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}
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#endregion Public Static Methods
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#region Public Static Operators
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/// <summary>
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/// Adds two vectors together.
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/// </summary>
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/// <param name="left">The first source vector.</param>
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/// <param name="right">The second source vector.</param>
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/// <returns>The summed vector.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 operator +(Vector3 left, Vector3 right)
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{
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return new Vector3(left.X + right.X, left.Y + right.Y, left.Z + right.Z);
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}
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/// <summary>
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/// Subtracts the second vector from the first.
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/// </summary>
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/// <param name="left">The first source vector.</param>
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/// <param name="right">The second source vector.</param>
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/// <returns>The difference vector.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 operator -(Vector3 left, Vector3 right)
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{
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return new Vector3(left.X - right.X, left.Y - right.Y, left.Z - right.Z);
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}
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/// <summary>
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/// Multiplies two vectors together.
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/// </summary>
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/// <param name="left">The first source vector.</param>
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/// <param name="right">The second source vector.</param>
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/// <returns>The product vector.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 operator *(Vector3 left, Vector3 right)
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{
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return new Vector3(left.X * right.X, left.Y * right.Y, left.Z * right.Z);
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}
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/// <summary>
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/// Multiplies a vector by the given scalar.
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/// </summary>
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/// <param name="left">The source vector.</param>
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/// <param name="right">The scalar value.</param>
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/// <returns>The scaled vector.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 operator *(Vector3 left, Single right)
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{
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return left * new Vector3(right);
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}
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/// <summary>
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/// Multiplies a vector by the given scalar.
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/// </summary>
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/// <param name="left">The scalar value.</param>
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/// <param name="right">The source vector.</param>
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/// <returns>The scaled vector.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 operator *(Single left, Vector3 right)
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{
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return new Vector3(left) * right;
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}
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/// <summary>
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/// Divides the first vector by the second.
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/// </summary>
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/// <param name="left">The first source vector.</param>
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/// <param name="right">The second source vector.</param>
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/// <returns>The vector resulting from the division.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 operator /(Vector3 left, Vector3 right)
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{
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return new Vector3(left.X / right.X, left.Y / right.Y, left.Z / right.Z);
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}
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/// <summary>
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/// Divides the vector by the given scalar.
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/// </summary>
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/// <param name="value1">The source vector.</param>
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/// <param name="value2">The scalar value.</param>
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/// <returns>The result of the division.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 operator /(Vector3 value1, float value2)
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{
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float invDiv = 1.0f / value2;
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return new Vector3(
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value1.X * invDiv,
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value1.Y * invDiv,
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value1.Z * invDiv);
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}
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/// <summary>
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/// Negates a given vector.
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/// </summary>
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/// <param name="value">The source vector.</param>
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/// <returns>The negated vector.</returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector3 operator -(Vector3 value)
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{
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return Zero - value;
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}
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/// <summary>
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/// Returns a boolean indicating whether the two given vectors are equal.
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/// </summary>
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/// <param name="left">The first vector to compare.</param>
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/// <param name="right">The second vector to compare.</param>
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/// <returns>True if the vectors are equal; False otherwise.</returns>
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[JitIntrinsic]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static bool operator ==(Vector3 left, Vector3 right)
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{
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return (left.X == right.X &&
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left.Y == right.Y &&
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left.Z == right.Z);
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}
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/// <summary>
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/// Returns a boolean indicating whether the two given vectors are not equal.
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/// </summary>
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/// <param name="left">The first vector to compare.</param>
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/// <param name="right">The second vector to compare.</param>
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/// <returns>True if the vectors are not equal; False if they are equal.</returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static bool operator !=(Vector3 left, Vector3 right)
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{
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return (left.X != right.X ||
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left.Y != right.Y ||
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left.Z != right.Z);
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}
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#endregion Public Static Operators
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}
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}
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