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Byte4.cs
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Byte4.cs
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// Copyright (c) Six Labors.
// Licensed under the Apache License, Version 2.0.
using System;
using System.Numerics;
using System.Runtime.CompilerServices;
namespace SixLabors.ImageSharp.PixelFormats
{
/// <summary>
/// Packed pixel type containing four 8-bit unsigned integer values, ranging from 0 to 255.
/// <para>
/// Ranges from [0, 0, 0, 0] to [255, 255, 255, 255] in vector form.
/// </para>
/// </summary>
public partial struct Byte4 : IPixel<Byte4>, IPackedVector<uint>
{
/// <summary>
/// Initializes a new instance of the <see cref="Byte4"/> struct.
/// </summary>
/// <param name="vector">
/// A vector containing the initial values for the components of the Byte4 structure.
/// </param>
public Byte4(Vector4 vector) => this.PackedValue = Pack(ref vector);
/// <summary>
/// Initializes a new instance of the <see cref="Byte4"/> struct.
/// </summary>
/// <param name="x">The x-component</param>
/// <param name="y">The y-component</param>
/// <param name="z">The z-component</param>
/// <param name="w">The w-component</param>
public Byte4(float x, float y, float z, float w)
{
var vector = new Vector4(x, y, z, w);
this.PackedValue = Pack(ref vector);
}
/// <inheritdoc/>
public uint PackedValue { get; set; }
/// <summary>
/// Compares two <see cref="Byte4"/> objects for equality.
/// </summary>
/// <param name="left">The <see cref="Byte4"/> on the left side of the operand.</param>
/// <param name="right">The <see cref="Byte4"/> on the right side of the operand.</param>
/// <returns>
/// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
/// </returns>
[MethodImpl(InliningOptions.ShortMethod)]
public static bool operator ==(Byte4 left, Byte4 right) => left.Equals(right);
/// <summary>
/// Compares two <see cref="Byte4"/> objects for equality.
/// </summary>
/// <param name="left">The <see cref="Byte4"/> on the left side of the operand.</param>
/// <param name="right">The <see cref="Byte4"/> on the right side of the operand.</param>
/// <returns>
/// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
/// </returns>
[MethodImpl(InliningOptions.ShortMethod)]
public static bool operator !=(Byte4 left, Byte4 right) => !left.Equals(right);
/// <inheritdoc />
public readonly PixelOperations<Byte4> CreatePixelOperations() => new PixelOperations();
/// <inheritdoc/>
[MethodImpl(InliningOptions.ShortMethod)]
public void FromScaledVector4(Vector4 vector) => this.FromVector4(vector * 255F);
/// <inheritdoc/>
[MethodImpl(InliningOptions.ShortMethod)]
public readonly Vector4 ToScaledVector4() => this.ToVector4() / 255F;
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void FromVector4(Vector4 vector) => this.PackedValue = Pack(ref vector);
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public readonly Vector4 ToVector4() => new(
this.PackedValue & 0xFF,
(this.PackedValue >> 0x8) & 0xFF,
(this.PackedValue >> 0x10) & 0xFF,
(this.PackedValue >> 0x18) & 0xFF);
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void FromArgb32(Argb32 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void FromBgr24(Bgr24 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void FromBgra32(Bgra32 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc/>
[MethodImpl(InliningOptions.ShortMethod)]
public void FromL8(L8 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc/>
[MethodImpl(InliningOptions.ShortMethod)]
public void FromL16(L16 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc/>
[MethodImpl(InliningOptions.ShortMethod)]
public void FromLa16(La16 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc/>
[MethodImpl(InliningOptions.ShortMethod)]
public void FromLa32(La32 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void FromRgb24(Rgb24 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void FromBgra5551(Bgra5551 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void FromRgba32(Rgba32 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void FromAbgr32(Abgr32 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public void ToRgba32(ref Rgba32 dest) => dest.FromScaledVector4(this.ToScaledVector4());
/// <inheritdoc/>
[MethodImpl(InliningOptions.ShortMethod)]
public void FromRgb48(Rgb48 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc/>
[MethodImpl(InliningOptions.ShortMethod)]
public void FromRgba64(Rgba64 source) => this.FromScaledVector4(source.ToScaledVector4());
/// <inheritdoc />
public override readonly bool Equals(object obj) => obj is Byte4 byte4 && this.Equals(byte4);
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public readonly bool Equals(Byte4 other) => this.PackedValue.Equals(other.PackedValue);
/// <inheritdoc />
[MethodImpl(InliningOptions.ShortMethod)]
public override readonly int GetHashCode() => this.PackedValue.GetHashCode();
/// <inheritdoc />
public override readonly string ToString()
{
var vector = this.ToVector4();
return FormattableString.Invariant($"Byte4({vector.X:#0.##}, {vector.Y:#0.##}, {vector.Z:#0.##}, {vector.W:#0.##})");
}
/// <summary>
/// Packs a vector into a uint.
/// </summary>
/// <param name="vector">The vector containing the values to pack.</param>
/// <returns>The <see cref="uint"/> containing the packed values.</returns>
[MethodImpl(InliningOptions.ShortMethod)]
private static uint Pack(ref Vector4 vector)
{
const float Max = 255F;
// Clamp the value between min and max values
vector = Numerics.Clamp(vector, Vector4.Zero, new Vector4(Max));
uint byte4 = (uint)Math.Round(vector.X) & 0xFF;
uint byte3 = ((uint)Math.Round(vector.Y) & 0xFF) << 0x8;
uint byte2 = ((uint)Math.Round(vector.Z) & 0xFF) << 0x10;
uint byte1 = ((uint)Math.Round(vector.W) & 0xFF) << 0x18;
return byte4 | byte3 | byte2 | byte1;
}
}
}