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102 lines
3.5 KiB
102 lines
3.5 KiB
// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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using System.Numerics;
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using System.Runtime.CompilerServices;
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using SixLabors.ImageSharp.PixelFormats;
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namespace SixLabors.ImageSharp.Tests.PixelFormats;
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[Trait("Category", "PixelFormats")]
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public class NormalizedShort2Tests
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{
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[Fact]
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public void NormalizedShort2_PackedValue()
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{
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Assert.Equal(0xE6672CCC, new NormalizedShort2(0.35f, -0.2f).PackedValue);
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Assert.Equal(3650751693, new NormalizedShort2(0.1f, -0.3f).PackedValue);
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Assert.Equal(0x0U, new NormalizedShort2(Vector2.Zero).PackedValue);
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Assert.Equal(0x7FFF7FFFU, new NormalizedShort2(Vector2.One).PackedValue);
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Assert.Equal(0x80018001, new NormalizedShort2(-Vector2.One).PackedValue);
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// TODO: I don't think this can ever pass since the bytes are already truncated.
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// Assert.Equal(3650751693, n.PackedValue);
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}
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[Fact]
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public void NormalizedShort2_ToVector2()
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{
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Assert.Equal(Vector2.One, new NormalizedShort2(Vector2.One).ToVector2());
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Assert.Equal(Vector2.Zero, new NormalizedShort2(Vector2.Zero).ToVector2());
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Assert.Equal(-Vector2.One, new NormalizedShort2(-Vector2.One).ToVector2());
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Assert.Equal(Vector2.One, new NormalizedShort2(Vector2.One * 1234.0f).ToVector2());
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Assert.Equal(-Vector2.One, new NormalizedShort2(Vector2.One * -1234.0f).ToVector2());
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}
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[Fact]
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public void NormalizedShort2_ToVector4()
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{
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Assert.Equal(new Vector4(1, 1, 0, 1), new NormalizedShort2(Vector2.One).ToVector4());
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Assert.Equal(new Vector4(0, 0, 0, 1), new NormalizedShort2(Vector2.Zero).ToVector4());
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}
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[Fact]
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public void NormalizedShort2_ToScaledVector4()
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{
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// arrange
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NormalizedShort2 short2 = new(-Vector2.One);
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// act
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Vector4 actual = short2.ToScaledVector4();
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// assert
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Assert.Equal(0, actual.X);
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Assert.Equal(0, actual.Y);
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Assert.Equal(0, 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 NormalizedShort2_FromScaledVector4()
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{
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// arrange
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Vector4 scaled = new NormalizedShort2(-Vector2.One).ToScaledVector4();
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const uint expected = 0x80018001;
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// act
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NormalizedShort2 short2 = NormalizedShort2.FromScaledVector4(scaled);
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uint actual = short2.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 NormalizedShort2_FromBgra5551()
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{
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// arrange
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Vector4 expected = new(1, 1, 0, 1);
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// act
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NormalizedShort2 normalizedShort2 = NormalizedShort2.FromBgra5551(new Bgra5551(1f, 1f, 1f, 1f));
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// assert
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Assert.Equal(expected, normalizedShort2.ToVector4());
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}
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[Fact]
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public void NormalizedShort2_PixelInformation()
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{
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PixelTypeInfo info = NormalizedShort2.GetPixelTypeInfo();
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Assert.Equal(Unsafe.SizeOf<NormalizedShort2>() * 8, info.BitsPerPixel);
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Assert.Equal(PixelAlphaRepresentation.None, info.AlphaRepresentation);
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Assert.Equal(PixelColorType.Red | PixelColorType.Green, info.ColorType);
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PixelComponentInfo componentInfo = info.ComponentInfo.Value;
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Assert.Equal(2, componentInfo.ComponentCount);
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Assert.Equal(0, componentInfo.Padding);
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Assert.Equal(16, componentInfo.GetComponentPrecision(0));
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Assert.Equal(16, componentInfo.GetComponentPrecision(1));
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Assert.Equal(16, componentInfo.GetMaximumComponentPrecision());
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}
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}
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