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70 lines
2.2 KiB
70 lines
2.2 KiB
// Copyright (c) Six Labors and contributors.
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// Licensed under the Apache License, Version 2.0.
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using System.Numerics;
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using SixLabors.ImageSharp.PixelFormats;
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using Xunit;
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namespace SixLabors.ImageSharp.Tests.PixelFormats
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{
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public class Argb32Tests
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{
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[Fact]
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public void Argb32_PackedValue()
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{
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Assert.Equal(0x80001a00u, new Argb32(+0.1f, -0.3f, +0.5f, -0.7f).PackedValue);
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Assert.Equal((uint)0x0, new Argb32(Vector4.Zero).PackedValue);
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Assert.Equal(0xFFFFFFFF, new Argb32(Vector4.One).PackedValue);
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}
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[Fact]
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public void Argb32_ToVector4()
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{
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Assert.Equal(Vector4.One, new Argb32(Vector4.One).ToVector4());
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Assert.Equal(Vector4.Zero, new Argb32(Vector4.Zero).ToVector4());
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Assert.Equal(Vector4.UnitX, new Argb32(Vector4.UnitX).ToVector4());
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Assert.Equal(Vector4.UnitY, new Argb32(Vector4.UnitY).ToVector4());
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Assert.Equal(Vector4.UnitZ, new Argb32(Vector4.UnitZ).ToVector4());
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Assert.Equal(Vector4.UnitW, new Argb32(Vector4.UnitW).ToVector4());
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}
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[Fact]
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public void Argb32_ToScaledVector4()
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{
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// arrange
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var argb = new Argb32(Vector4.One);
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// act
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Vector4 actual = argb.ToScaledVector4();
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// assert
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Assert.Equal(1, actual.X);
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Assert.Equal(1, actual.Y);
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Assert.Equal(1, actual.Z);
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Assert.Equal(1, actual.W);
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}
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[Fact]
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public void Argb32_FromScaledVector4()
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{
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// arrange
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Vector4 scaled = new Argb32(Vector4.One).ToScaledVector4();
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var pixel = default(Argb32);
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uint expected = 0xFFFFFFFF;
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// act
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pixel.FromScaledVector4(scaled);
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uint actual = pixel.PackedValue;
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// assert
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Assert.Equal(expected, actual);
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}
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[Fact]
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public void Argb32_Clamping()
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{
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Assert.Equal(Vector4.Zero, new Argb32(Vector4.One * -1234.0f).ToVector4());
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Assert.Equal(Vector4.One, new Argb32(Vector4.One * +1234.0f).ToVector4());
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}
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}
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}
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