// Copyright (c) Six Labors and contributors.
// Licensed under the Apache License, Version 2.0.
using System;
using System.Numerics;
using SixLabors.ImageSharp.PixelFormats;
using Xunit;
namespace SixLabors.ImageSharp.Tests.Colors
{
///
/// The packed pixel tests.
///
///
/// The "ToVector4" tests should now be covered in
/// and at some point they can be safely removed from here.
///
public class PackedPixelTests
{
[Fact]
public void Alpha8()
{
// Test the limits.
Assert.Equal(0x0, new Alpha8(0F).PackedValue);
Assert.Equal(0xFF, new Alpha8(1F).PackedValue);
// Test clamping.
Assert.Equal(0x0, new Alpha8(-1234F).PackedValue);
Assert.Equal(0xFF, new Alpha8(1234F).PackedValue);
// Test ordering
Assert.Equal(124, new Alpha8(124F / 0xFF).PackedValue);
Assert.Equal(26, new Alpha8(0.1F).PackedValue);
// Test ordering
var vector = new Alpha8(.5F).ToVector4();
Assert.Equal(0, vector.X);
Assert.Equal(0, vector.Y);
Assert.Equal(0, vector.Z);
Assert.Equal(.5F, vector.W, 2);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Alpha8(.5F).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(0, 0, 0));
new Alpha8(.5F).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(0, 0, 0, 128));
new Alpha8(.5F).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(0, 0, 0));
new Alpha8(.5F).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(0, 0, 0, 128));
}
[Fact]
public void Argb32()
{
// Test the limits.
Assert.Equal((uint)0x0, new Argb32(Vector4.Zero).PackedValue);
Assert.Equal(0xFFFFFFFF, new Argb32(Vector4.One).PackedValue);
// Test ToVector4.
Assert.True(Equal(Vector4.One, new Argb32(Vector4.One).ToVector4()));
Assert.True(Equal(Vector4.Zero, new Argb32(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.UnitX, new Argb32(Vector4.UnitX).ToVector4()));
Assert.True(Equal(Vector4.UnitY, new Argb32(Vector4.UnitY).ToVector4()));
Assert.True(Equal(Vector4.UnitZ, new Argb32(Vector4.UnitZ).ToVector4()));
Assert.True(Equal(Vector4.UnitW, new Argb32(Vector4.UnitW).ToVector4()));
// Test clamping.
Assert.True(Equal(Vector4.Zero, new Argb32(Vector4.One * -1234.0f).ToVector4()));
Assert.True(Equal(Vector4.One, new Argb32(Vector4.One * +1234.0f).ToVector4()));
float x = +0.1f;
float y = -0.3f;
float z = +0.5f;
float w = -0.7f;
var argb = new Argb32(x, y, z, w);
Assert.Equal(0x001a0080u, argb.PackedValue);
// Test ordering
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
argb.ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(0x1a, 0, 0x80));
argb.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(0x1a, 0, 0x80, 0));
argb.ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(0x1a, 0, 0x80));
argb.ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(0x1a, 0, 0x80, 0));
}
[Fact]
public void Bgr565()
{
// Test the limits.
Assert.Equal(0x0, new Bgr565(Vector3.Zero).PackedValue);
Assert.Equal(0xFFFF, new Bgr565(Vector3.One).PackedValue);
// Test ToVector3.
Assert.True(Equal(Vector3.One, new Bgr565(Vector3.One).ToVector3()));
Assert.True(Equal(Vector3.Zero, new Bgr565(Vector3.Zero).ToVector3()));
Assert.True(Equal(Vector3.UnitX, new Bgr565(Vector3.UnitX).ToVector3()));
Assert.True(Equal(Vector3.UnitY, new Bgr565(Vector3.UnitY).ToVector3()));
Assert.True(Equal(Vector3.UnitZ, new Bgr565(Vector3.UnitZ).ToVector3()));
// Test clamping.
Assert.True(Equal(Vector3.Zero, new Bgr565(Vector3.One * -1234F).ToVector3()));
Assert.True(Equal(Vector3.One, new Bgr565(Vector3.One * 1234F).ToVector3()));
// Make sure the swizzle is correct.
Assert.Equal(0xF800, new Bgr565(Vector3.UnitX).PackedValue);
Assert.Equal(0x07E0, new Bgr565(Vector3.UnitY).PackedValue);
Assert.Equal(0x001F, new Bgr565(Vector3.UnitZ).PackedValue);
float x = 0.1F;
float y = -0.3F;
float z = 0.5F;
Assert.Equal(6160, new Bgr565(x, y, z).PackedValue);
// Test ordering
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Bgr565(x, y, z).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(25, 0, 132));
new Bgr565(x, y, z).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(25, 0, 132, 255));
new Bgr565(x, y, z).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(25, 0, 132));
new Bgr565(x, y, z).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(25, 0, 132, 255));
}
[Fact]
public void Bgra4444()
{
// Test the limits.
Assert.Equal(0x0, new Bgra4444(Vector4.Zero).PackedValue);
Assert.Equal(0xFFFF, new Bgra4444(Vector4.One).PackedValue);
// Test ToVector4.
Assert.True(Equal(Vector4.One, new Bgra4444(Vector4.One).ToVector4()));
Assert.True(Equal(Vector4.Zero, new Bgra4444(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.UnitX, new Bgra4444(Vector4.UnitX).ToVector4()));
Assert.True(Equal(Vector4.UnitY, new Bgra4444(Vector4.UnitY).ToVector4()));
Assert.True(Equal(Vector4.UnitZ, new Bgra4444(Vector4.UnitZ).ToVector4()));
Assert.True(Equal(Vector4.UnitW, new Bgra4444(Vector4.UnitW).ToVector4()));
// Test clamping.
Assert.True(Equal(Vector4.Zero, new Bgra4444(Vector4.One * -1234.0f).ToVector4()));
Assert.True(Equal(Vector4.One, new Bgra4444(Vector4.One * 1234.0f).ToVector4()));
// Make sure the swizzle is correct.
Assert.Equal(0x0F00, new Bgra4444(Vector4.UnitX).PackedValue);
Assert.Equal(0x00F0, new Bgra4444(Vector4.UnitY).PackedValue);
Assert.Equal(0x000F, new Bgra4444(Vector4.UnitZ).PackedValue);
Assert.Equal(0xF000, new Bgra4444(Vector4.UnitW).PackedValue);
float x = 0.1f;
float y = -0.3f;
float z = 0.5f;
float w = -0.7f;
Assert.Equal(520, new Bgra4444(x, y, z, w).PackedValue);
// Test ordering
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Bgra4444(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(34, 0, 136));
new Bgra4444(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(34, 0, 136, 0));
new Bgra4444(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(34, 0, 136));
new Bgra4444(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(34, 0, 136, 0));
}
[Fact]
public void Bgra5551()
{
// Test the limits.
Assert.Equal(0x0, new Bgra5551(Vector4.Zero).PackedValue);
Assert.Equal(0xFFFF, new Bgra5551(Vector4.One).PackedValue);
// Test ToVector4
Assert.True(Equal(Vector4.Zero, new Bgra5551(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.One, new Bgra5551(Vector4.One).ToVector4()));
// Test clamping.
Assert.Equal(Vector4.Zero, new Bgra5551(Vector4.One * -1234.0f).ToVector4());
Assert.Equal(Vector4.One, new Bgra5551(Vector4.One * 1234.0f).ToVector4());
// Test Ordering
float x = 0x1a;
float y = 0x16;
float z = 0xd;
float w = 0x1;
Assert.Equal(0xeacd, new Bgra5551(x / 0x1f, y / 0x1f, z / 0x1f, w).PackedValue);
x = 0.1f;
y = -0.3f;
z = 0.5f;
w = -0.7f;
Assert.Equal(3088, new Bgra5551(x, y, z, w).PackedValue);
// Test ordering
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Bgra5551(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(24, 0, 131));
new Bgra5551(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(24, 0, 131, 0));
new Bgra5551(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(24, 0, 131));
new Bgra5551(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(24, 0, 131, 0));
}
[Fact]
public void Byte4()
{
// Test the limits.
Assert.Equal((uint)0x0, new Byte4(Vector4.Zero).PackedValue);
Assert.Equal(0xFFFFFFFF, new Byte4(Vector4.One * 255).PackedValue);
// Test ToVector4.
Assert.True(Equal(Vector4.One * 255, new Byte4(Vector4.One * 255).ToVector4()));
Assert.True(Equal(Vector4.Zero, new Byte4(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.UnitX * 255, new Byte4(Vector4.UnitX * 255).ToVector4()));
Assert.True(Equal(Vector4.UnitY * 255, new Byte4(Vector4.UnitY * 255).ToVector4()));
Assert.True(Equal(Vector4.UnitZ * 255, new Byte4(Vector4.UnitZ * 255).ToVector4()));
Assert.True(Equal(Vector4.UnitW * 255, new Byte4(Vector4.UnitW * 255).ToVector4()));
// Test clamping.
Assert.True(Equal(Vector4.Zero, new Byte4(Vector4.One * -1234.0f).ToVector4()));
Assert.True(Equal(Vector4.One * 255, new Byte4(Vector4.One * 1234.0f).ToVector4()));
// Test ordering
float x = 0x2d;
float y = 0x36;
float z = 0x7b;
float w = 0x1a;
Assert.Equal((uint)0x1a7b362d, new Byte4(x, y, z, w).PackedValue);
x = 127.5f;
y = -12.3f;
z = 0.5f;
w = -0.7f;
Assert.Equal((uint)128, new Byte4(x, y, z, w).PackedValue);
// Test ordering
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Byte4(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(128, 0, 0));
new Byte4(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(128, 0, 0, 0));
new Byte4(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(128, 0, 0));
new Byte4(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(128, 0, 0, 0));
var r = new Byte4();
r.PackFromRgba32(new Rgba32(20, 38, 0, 255));
r.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(20, 38, 0, 255));
}
[Fact]
public void HalfSingle()
{
// Test limits
Assert.Equal(15360, new HalfSingle(1F).PackedValue);
Assert.Equal(0, new HalfSingle(0F).PackedValue);
Assert.Equal(48128, new HalfSingle(-1F).PackedValue);
// Test values
Assert.Equal(11878, new HalfSingle(0.1F).PackedValue);
Assert.Equal(46285, new HalfSingle(-0.3F).PackedValue);
// Test ordering
float x = .5F;
Assert.True(Equal(new Vector4(x, 0, 0, 1), new HalfSingle(x).ToVector4()));
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new HalfSingle(x).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(128, 0, 0));
new HalfSingle(x).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(128, 0, 0, 255));
new HalfSingle(x).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(128, 0, 0));
new HalfSingle(x).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(128, 0, 0, 255));
}
[Fact]
public void HalfVector2()
{
// Test PackedValue
Assert.Equal(0u, new HalfVector2(Vector2.Zero).PackedValue);
Assert.Equal(1006648320u, new HalfVector2(Vector2.One).PackedValue);
Assert.Equal(3033345638u, new HalfVector2(0.1f, -0.3f).PackedValue);
// Test ToVector2
Assert.True(Equal(Vector2.Zero, new HalfVector2(Vector2.Zero).ToVector2()));
Assert.True(Equal(Vector2.One, new HalfVector2(Vector2.One).ToVector2()));
Assert.True(Equal(Vector2.UnitX, new HalfVector2(Vector2.UnitX).ToVector2()));
Assert.True(Equal(Vector2.UnitY, new HalfVector2(Vector2.UnitY).ToVector2()));
// Test ordering
float x = .5F;
float y = .25F;
Assert.True(Equal(new Vector4(x, y, 0, 1), new HalfVector2(x, y).ToVector4()));
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new HalfVector2(x, y).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(128, 64, 0));
new HalfVector2(x, y).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(128, 64, 0, 255));
new HalfVector2(x, y).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(128, 64, 0));
new HalfVector2(x, y).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(128, 64, 0, 255));
}
[Fact]
public void HalfVector4()
{
// Test PackedValue
Assert.Equal(0uL, new HalfVector4(Vector4.Zero).PackedValue);
Assert.Equal(4323521613979991040uL, new HalfVector4(Vector4.One).PackedValue);
Assert.Equal(13547034390470638592uL, new HalfVector4(-Vector4.One).PackedValue);
Assert.Equal(15360uL, new HalfVector4(Vector4.UnitX).PackedValue);
Assert.Equal(1006632960uL, new HalfVector4(Vector4.UnitY).PackedValue);
Assert.Equal(65970697666560uL, new HalfVector4(Vector4.UnitZ).PackedValue);
Assert.Equal(4323455642275676160uL, new HalfVector4(Vector4.UnitW).PackedValue);
Assert.Equal(4035285078724390502uL, new HalfVector4(0.1f, 0.3f, 0.4f, 0.5f).PackedValue);
// Test ToVector4
Assert.True(Equal(Vector4.Zero, new HalfVector4(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.One, new HalfVector4(Vector4.One).ToVector4()));
Assert.True(Equal(-Vector4.One, new HalfVector4(-Vector4.One).ToVector4()));
Assert.True(Equal(Vector4.UnitX, new HalfVector4(Vector4.UnitX).ToVector4()));
Assert.True(Equal(Vector4.UnitY, new HalfVector4(Vector4.UnitY).ToVector4()));
Assert.True(Equal(Vector4.UnitZ, new HalfVector4(Vector4.UnitZ).ToVector4()));
Assert.True(Equal(Vector4.UnitW, new HalfVector4(Vector4.UnitW).ToVector4()));
// Test ordering
float x = .25F;
float y = .5F;
float z = .75F;
float w = 1F;
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new HalfVector4(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(64, 128, 191));
new HalfVector4(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(64, 128, 191, 255));
new HalfVector4(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(64, 128, 191));
new HalfVector4(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(64, 128, 191, 255));
}
[Fact]
public void NormalizedByte2()
{
// Test PackedValue
Assert.Equal(0x0, new NormalizedByte2(Vector2.Zero).PackedValue);
Assert.Equal(0x7F7F, new NormalizedByte2(Vector2.One).PackedValue);
Assert.Equal(0x8181, new NormalizedByte2(-Vector2.One).PackedValue);
// Test ToVector2
Assert.True(Equal(Vector2.One, new NormalizedByte2(Vector2.One).ToVector2()));
Assert.True(Equal(Vector2.Zero, new NormalizedByte2(Vector2.Zero).ToVector2()));
Assert.True(Equal(-Vector2.One, new NormalizedByte2(-Vector2.One).ToVector2()));
Assert.True(Equal(Vector2.One, new NormalizedByte2(Vector2.One * 1234.0f).ToVector2()));
Assert.True(Equal(-Vector2.One, new NormalizedByte2(Vector2.One * -1234.0f).ToVector2()));
// Test ToVector4
Assert.True(Equal(new Vector4(1, 1, 0, 1), new NormalizedByte2(Vector2.One).ToVector4()));
Assert.True(Equal(new Vector4(0, 0, 0, 1), new NormalizedByte2(Vector2.Zero).ToVector4()));
// Test Ordering
float x = 0.1f;
float y = -0.3f;
Assert.Equal(0xda0d, new NormalizedByte2(x, y).PackedValue);
var n = new NormalizedByte2();
n.PackFromRgba32(new Rgba32(141, 90, 0, 0));
Assert.Equal(0xda0d, n.PackedValue);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new NormalizedByte2(x, y).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(141, 90, 0));
new NormalizedByte2(x, y).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(141, 90, 0, 255));
new NormalizedByte2(x, y).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(141, 90, 0));
new NormalizedByte2(x, y).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(141, 90, 0, 255));
}
[Fact]
public void NormalizedByte4()
{
// Test PackedValue
Assert.Equal((uint)0x0, new NormalizedByte4(Vector4.Zero).PackedValue);
Assert.Equal((uint)0x7F7F7F7F, new NormalizedByte4(Vector4.One).PackedValue);
Assert.Equal(0x81818181, new NormalizedByte4(-Vector4.One).PackedValue);
// Test ToVector4
Assert.True(Equal(Vector4.One, new NormalizedByte4(Vector4.One).ToVector4()));
Assert.True(Equal(Vector4.Zero, new NormalizedByte4(Vector4.Zero).ToVector4()));
Assert.True(Equal(-Vector4.One, new NormalizedByte4(-Vector4.One).ToVector4()));
Assert.True(Equal(Vector4.One, new NormalizedByte4(Vector4.One * 1234.0f).ToVector4()));
Assert.True(Equal(-Vector4.One, new NormalizedByte4(Vector4.One * -1234.0f).ToVector4()));
// Test Ordering
float x = 0.1f;
float y = -0.3f;
float z = 0.5f;
float w = -0.7f;
Assert.Equal(0xA740DA0D, new NormalizedByte4(x, y, z, w).PackedValue);
var n = new NormalizedByte4();
n.PackFromRgba32(new Rgba32(141, 90, 192, 39));
Assert.Equal(0xA740DA0D, n.PackedValue);
Assert.Equal((uint)958796544, new NormalizedByte4(0.0008f, 0.15f, 0.30f, 0.45f).PackedValue);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new NormalizedByte4(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(141, 90, 192));
new NormalizedByte4(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(141, 90, 192, 39));
new NormalizedByte4(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(141, 90, 192));
new NormalizedByte4(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(141, 90, 192, 39));
// http://community.monogame.net/t/normalizedbyte4-texture2d-gives-different-results-from-xna/8012/8
var r = new NormalizedByte4();
r.PackFromRgba32(new Rgba32(9, 115, 202, 127));
r.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(9, 115, 202, 127));
r.PackedValue = 0xff4af389;
r.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(9, 115, 202, 127));
}
[Fact]
public void NormalizedShort2()
{
Assert.Equal((uint)0x0, new NormalizedShort2(Vector2.Zero).PackedValue);
Assert.Equal((uint)0x7FFF7FFF, new NormalizedShort2(Vector2.One).PackedValue);
Assert.Equal(0x80018001, new NormalizedShort2(-Vector2.One).PackedValue);
Assert.True(Equal(Vector2.One, new NormalizedShort2(Vector2.One).ToVector2()));
Assert.True(Equal(Vector2.Zero, new NormalizedShort2(Vector2.Zero).ToVector2()));
Assert.True(Equal(-Vector2.One, new NormalizedShort2(-Vector2.One).ToVector2()));
Assert.True(Equal(Vector2.One, new NormalizedShort2(Vector2.One * 1234.0f).ToVector2()));
Assert.True(Equal(-Vector2.One, new NormalizedShort2(Vector2.One * -1234.0f).ToVector2()));
Assert.True(Equal(new Vector4(1, 1, 0, 1), (new NormalizedShort2(Vector2.One)).ToVector4()));
Assert.True(Equal(new Vector4(0, 0, 0, 1), (new NormalizedShort2(Vector2.Zero)).ToVector4()));
// Test Ordering
float x = 0.35f;
float y = -0.2f;
Assert.Equal(0xE6672CCC, new NormalizedShort2(x, y).PackedValue);
x = 0.1f;
y = -0.3f;
Assert.Equal(3650751693, new NormalizedShort2(x, y).PackedValue);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
var n = new NormalizedShort2();
n.PackFromRgba32(new Rgba32(141, 90, 0, 0));
n.ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(141, 90, 0));
// TODO: I don't think this can ever pass since the bytes are already truncated.
// Assert.Equal(3650751693, n.PackedValue);
new NormalizedShort2(x, y).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(141, 90, 0));
new NormalizedShort2(x, y).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(141, 90, 0, 255));
new NormalizedShort2(x, y).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(141, 90, 0));
new NormalizedShort2(x, y).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(141, 90, 0, 255));
}
[Fact]
public void NormalizedShort4()
{
// Test PackedValue
Assert.Equal((ulong)0x0, new NormalizedShort4(Vector4.Zero).PackedValue);
Assert.Equal((ulong)0x7FFF7FFF7FFF7FFF, new NormalizedShort4(Vector4.One).PackedValue);
Assert.Equal(0x8001800180018001, new NormalizedShort4(-Vector4.One).PackedValue);
// Test ToVector4
Assert.True(Equal(Vector4.One, new NormalizedShort4(Vector4.One).ToVector4()));
Assert.True(Equal(Vector4.Zero, new NormalizedShort4(Vector4.Zero).ToVector4()));
Assert.True(Equal(-Vector4.One, new NormalizedShort4(-Vector4.One).ToVector4()));
Assert.True(Equal(Vector4.One, new NormalizedShort4(Vector4.One * 1234.0f).ToVector4()));
Assert.True(Equal(-Vector4.One, new NormalizedShort4(Vector4.One * -1234.0f).ToVector4()));
// Test Ordering
float x = 0.1f;
float y = -0.3f;
float z = 0.5f;
float w = -0.7f;
Assert.Equal(0xa6674000d99a0ccd, new NormalizedShort4(x, y, z, w).PackedValue);
Assert.Equal((ulong)4150390751449251866, new NormalizedShort4(0.0008f, 0.15f, 0.30f, 0.45f).PackedValue);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new NormalizedShort4(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(141, 90, 192));
new NormalizedShort4(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(141, 90, 192, 39));
new NormalizedShort4(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(141, 90, 192));
new NormalizedShort4(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(141, 90, 192, 39));
var r = new NormalizedShort4();
r.PackFromRgba32(new Rgba32(9, 115, 202, 127));
r.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(9, 115, 202, 127));
}
[Fact]
public void Rg32()
{
// Test the limits.
Assert.Equal((uint)0x0, new Rg32(Vector2.Zero).PackedValue);
Assert.Equal(0xFFFFFFFF, new Rg32(Vector2.One).PackedValue);
// Test ToVector2
Assert.True(Equal(Vector2.Zero, new Rg32(Vector2.Zero).ToVector2()));
Assert.True(Equal(Vector2.One, new Rg32(Vector2.One).ToVector2()));
// Test clamping.
Assert.True(Equal(Vector2.Zero, new Rg32(Vector2.One * -1234.0f).ToVector2()));
Assert.True(Equal(Vector2.One, new Rg32(Vector2.One * 1234.0f).ToVector2()));
// Test Ordering
float x = 0xb6dc;
float y = 0xA59f;
Assert.Equal(0xa59fb6dc, new Rg32(x / 0xffff, y / 0xffff).PackedValue);
x = 0.1f;
y = -0.3f;
Assert.Equal((uint)6554, new Rg32(x, y).PackedValue);
// Test ordering
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Rg32(x, y).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(25, 0, 0));
new Rg32(x, y).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(25, 0, 0, 255));
new Rg32(x, y).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(25, 0, 0));
new Rg32(x, y).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(25, 0, 0, 255));
}
[Fact]
public void Rgba1010102()
{
// Test the limits.
Assert.Equal((uint)0x0, new Rgba1010102(Vector4.Zero).PackedValue);
Assert.Equal(0xFFFFFFFF, new Rgba1010102(Vector4.One).PackedValue);
// Test ToVector4
Assert.True(Equal(Vector4.Zero, new Rgba1010102(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.One, new Rgba1010102(Vector4.One).ToVector4()));
// Test clamping.
Assert.True(Equal(Vector4.Zero, new Rgba1010102(Vector4.One * -1234.0f).ToVector4()));
Assert.True(Equal(Vector4.One, new Rgba1010102(Vector4.One * 1234.0f).ToVector4()));
// Test Ordering
float x = 0x2db;
float y = 0x36d;
float z = 0x3b7;
float w = 0x1;
Assert.Equal((uint)0x7B7DB6DB, new Rgba1010102(x / 0x3ff, y / 0x3ff, z / 0x3ff, w / 3).PackedValue);
x = 0.1f;
y = -0.3f;
z = 0.5f;
w = -0.7f;
Assert.Equal((uint)536871014, new Rgba1010102(x, y, z, w).PackedValue);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Rgba1010102(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(25, 0, 128));
new Rgba1010102(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(25, 0, 128, 0));
new Rgba1010102(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(25, 0, 128));
new Rgba1010102(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(25, 0, 128, 0));
// Alpha component accuracy will be awful.
var r = new Rgba1010102();
r.PackFromRgba32(new Rgba32(25, 0, 128, 0));
r.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(25, 0, 128, 0));
}
[Fact]
public void Color()
{
// Test the limits.
Assert.Equal((uint)0x0, new Rgba32(Vector4.Zero).PackedValue);
Assert.Equal(0xFFFFFFFF, new Rgba32(Vector4.One).PackedValue);
// Test ToVector4.
Assert.True(Equal(Vector4.One, new Rgba32(Vector4.One).ToVector4()));
Assert.True(Equal(Vector4.Zero, new Rgba32(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.UnitX, new Rgba32(Vector4.UnitX).ToVector4()));
Assert.True(Equal(Vector4.UnitY, new Rgba32(Vector4.UnitY).ToVector4()));
Assert.True(Equal(Vector4.UnitZ, new Rgba32(Vector4.UnitZ).ToVector4()));
Assert.True(Equal(Vector4.UnitW, new Rgba32(Vector4.UnitW).ToVector4()));
// Test clamping.
Assert.True(Equal(Vector4.Zero, new Rgba32(Vector4.One * -1234.0f).ToVector4()));
Assert.True(Equal(Vector4.One, new Rgba32(Vector4.One * +1234.0f).ToVector4()));
float x = +0.1f;
float y = -0.3f;
float z = +0.5f;
float w = -0.7f;
var rgba32 = new Rgba32(x, y, z, w);
Assert.Equal(0x80001Au, rgba32.PackedValue);
// Test ordering
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
rgba32.ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(0x1a, 0, 0x80));
rgba32.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(0x1a, 0, 0x80, 0));
rgba32.ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(0x1a, 0, 0x80));
rgba32.ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(0x1a, 0, 0x80, 0));
}
[Fact]
public void Rgba64()
{
// Test the limits.
Assert.Equal((ulong)0x0, new Rgba64(Vector4.Zero).PackedValue);
Assert.Equal(0xFFFFFFFFFFFFFFFF, new Rgba64(Vector4.One).PackedValue);
// Test ToVector4
Assert.True(Equal(Vector4.Zero, new Rgba64(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.One, new Rgba64(Vector4.One).ToVector4()));
// Test clamping.
Assert.True(Equal(Vector4.Zero, new Rgba64(Vector4.One * -1234.0f).ToVector4()));
Assert.True(Equal(Vector4.One, new Rgba64(Vector4.One * 1234.0f).ToVector4()));
// Test data ordering
Assert.Equal(0xC7AD8F5C570A1EB8, new Rgba64(((float)0x1EB8) / 0xffff, ((float)0x570A) / 0xffff, ((float)0x8F5C) / 0xffff, ((float)0xC7AD) / 0xffff).PackedValue);
Assert.Equal(0xC7AD8F5C570A1EB8, new Rgba64(0.12f, 0.34f, 0.56f, 0.78f).PackedValue);
float x = 0.08f;
float y = 0.15f;
float z = 0.30f;
float w = 0.45f;
Assert.Equal((ulong)0x73334CCC2666147B, new Rgba64(x, y, z, w).PackedValue);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Rgba64(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(20, 38, 76));
new Rgba64(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(20, 38, 76, 115));
new Rgba64(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(20, 38, 76));
new Rgba64(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(20, 38, 76, 115));
var r = new Rgba64();
r.PackFromRgba32(new Rgba32(20, 38, 76, 115));
r.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(20, 38, 76, 115));
}
[Fact]
public void Short2()
{
// Test the limits.
Assert.Equal((uint)0x0, new Short2(Vector2.Zero).PackedValue);
Assert.Equal((uint)0x7FFF7FFF, new Short2(Vector2.One * 0x7FFF).PackedValue);
Assert.Equal(0x80008000, new Short2(Vector2.One * -0x8000).PackedValue);
// Test ToVector2.
Assert.True(Equal(Vector2.One * 0x7FFF, new Short2(Vector2.One * 0x7FFF).ToVector2()));
Assert.True(Equal(Vector2.Zero, new Short2(Vector2.Zero).ToVector2()));
Assert.True(Equal(Vector2.One * -0x8000, new Short2(Vector2.One * -0x8000).ToVector2()));
Assert.True(Equal(Vector2.UnitX * 0x7FFF, new Short2(Vector2.UnitX * 0x7FFF).ToVector2()));
Assert.True(Equal(Vector2.UnitY * 0x7FFF, new Short2(Vector2.UnitY * 0x7FFF).ToVector2()));
// Test clamping.
Assert.True(Equal(Vector2.One * 0x7FFF, new Short2(Vector2.One * 1234567.0f).ToVector2()));
Assert.True(Equal(Vector2.One * -0x8000, new Short2(Vector2.One * -1234567.0f).ToVector2()));
// Test ToVector4.
Assert.True(Equal(new Vector4(0x7FFF, 0x7FFF, 0, 1), (new Short2(Vector2.One * 0x7FFF)).ToVector4()));
Assert.True(Equal(new Vector4(0, 0, 0, 1), (new Short2(Vector2.Zero)).ToVector4()));
Assert.True(Equal(new Vector4(-0x8000, -0x8000, 0, 1), (new Short2(Vector2.One * -0x8000)).ToVector4()));
// Test ordering
float x = 0x2db1;
float y = 0x361d;
Assert.Equal((uint)0x361d2db1, new Short2(x, y).PackedValue);
x = 127.5f;
y = -5.3f;
Assert.Equal(4294639744, new Short2(x, y).PackedValue);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Short2(x, y).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(128, 127, 0));
new Short2(x, y).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(128, 127, 0, 255));
new Short2(x, y).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(128, 127, 0));
new Short2(x, y).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(128, 127, 0, 255));
var r = new Short2();
r.PackFromRgba32(new Rgba32(20, 38, 0, 255));
r.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(20, 38, 0, 255));
}
[Fact]
public void Short4()
{
// Test the limits.
Assert.Equal((ulong)0x0, new Short4(Vector4.Zero).PackedValue);
Assert.Equal((ulong)0x7FFF7FFF7FFF7FFF, new Short4(Vector4.One * 0x7FFF).PackedValue);
Assert.Equal(0x8000800080008000, new Short4(Vector4.One * -0x8000).PackedValue);
// Test ToVector4.
Assert.Equal(Vector4.One * 0x7FFF, new Short4(Vector4.One * 0x7FFF).ToVector4());
Assert.Equal(Vector4.Zero, new Short4(Vector4.Zero).ToVector4());
Assert.Equal(Vector4.One * -0x8000, new Short4(Vector4.One * -0x8000).ToVector4());
Assert.Equal(Vector4.UnitX * 0x7FFF, new Short4(Vector4.UnitX * 0x7FFF).ToVector4());
Assert.Equal(Vector4.UnitY * 0x7FFF, new Short4(Vector4.UnitY * 0x7FFF).ToVector4());
Assert.Equal(Vector4.UnitZ * 0x7FFF, new Short4(Vector4.UnitZ * 0x7FFF).ToVector4());
Assert.Equal(Vector4.UnitW * 0x7FFF, new Short4(Vector4.UnitW * 0x7FFF).ToVector4());
// Test clamping.
Assert.Equal(Vector4.One * 0x7FFF, new Short4(Vector4.One * 1234567.0f).ToVector4());
Assert.Equal(Vector4.One * -0x8000, new Short4(Vector4.One * -1234567.0f).ToVector4());
// Test Ordering
float x = 0.1f;
float y = -0.3f;
float z = 0.5f;
float w = -0.7f;
Assert.Equal(18446462598732840960, new Short4(x, y, z, w).PackedValue);
x = 11547;
y = 12653;
z = 29623;
w = 193;
Assert.Equal((ulong)0x00c173b7316d2d1b, new Short4(x, y, z, w).PackedValue);
var rgb = default(Rgb24);
var rgba = default(Rgba32);
var bgr = default(Bgr24);
var bgra = default(Bgra32);
new Short4(x, y, z, w).ToRgb24(ref rgb);
Assert.Equal(rgb, new Rgb24(172, 177, 243));
new Short4(x, y, z, w).ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(172, 177, 243, 128));
new Short4(x, y, z, w).ToBgr24(ref bgr);
Assert.Equal(bgr, new Bgr24(172, 177, 243));
new Short4(x, y, z, w).ToBgra32(ref bgra);
Assert.Equal(bgra, new Bgra32(172, 177, 243, 128));
var r = new Short4();
r.PackFromRgba32(new Rgba32(20, 38, 0, 255));
r.ToRgba32(ref rgba);
Assert.Equal(rgba, new Rgba32(20, 38, 0, 255));
}
// Comparison helpers with small tolerance to allow for floating point rounding during computations.
public static bool Equal(float a, float b)
{
return Math.Abs(a - b) < 1e-5;
}
public static bool Equal(Vector2 a, Vector2 b)
{
return Equal(a.X, b.X) && Equal(a.Y, b.Y);
}
public static bool Equal(Vector3 a, Vector3 b)
{
return Equal(a.X, b.X) && Equal(a.Y, b.Y) && Equal(a.Z, b.Z);
}
public static bool Equal(Vector4 a, Vector4 b)
{
return Equal(a.X, b.X) && Equal(a.Y, b.Y) && Equal(a.Z, b.Z) && Equal(a.W, b.W);
}
}
}