ColorTests ClassDelta Engine Documentation
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Inheritance Hierarchy
System Object
  DeltaEngine.Tests.Datatypes ColorTests

Namespace: DeltaEngine.Tests.Datatypes
Assembly: DeltaEngine.Tests (in DeltaEngine.Tests.dll) Version: 1.1.1.0 (1.1.1)
Syntax
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public class ColorTests

The ColorTests type exposes the following members.

Constructors
  NameDescription
Public methodColorTests
Initializes a new instance of the ColorTests class
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Methods
  NameDescription
Public methodChangeColor
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Public methodCommonColors
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Public methodCreateFromString
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Public methodCreateTransparentVersionsOfColors
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Public methodCreateWithBytes
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Public methodCreateWithFloats
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Public methodDuplicateComponentThrowsError
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Public methodEquals
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Public methodGetBgraBytesFromColorArrayWithAlpha
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Public methodGetColorComponentsAsFloats
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Public methodGetHeatmapColor
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Public methodGetRandomBrightColor
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Public methodGetRandomBrightColorUsingFixedRandomValues
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Public methodGetRandomColor
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Public methodLerp
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Public methodMalformedComponentThrowsError
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Public methodMissingComponentThrowsError
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Public methodMultiply
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Public methodNonByteComponentThrowsError
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Public methodNotSoCommonColors
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Public methodPackedRgba
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Public methodSetColorComponentsWithFloats
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Public methodSizeOfColor
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Public methodToString
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Examples
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[Test]
public void CreateWithBytes()
{
    var color = new Color(1, 2, 3, 4);
    Assert.AreEqual(1, color.R);
    Assert.AreEqual(2, color.G);
    Assert.AreEqual(3, color.B);
    Assert.AreEqual(4, color.A);
}
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[Test]
public void ChangeColor()
{
    var color = new Color(1, 2, 3, 4) { R = 5, G = 6, B = 7, A = 8 };
    Assert.AreEqual(5, color.R);
    Assert.AreEqual(6, color.G);
    Assert.AreEqual(7, color.B);
    Assert.AreEqual(8, color.A);
}
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[Test]
public void CreateWithFloats()
{
    var color = new Color(1.0f, 0.0f, 0.5f);
    Assert.AreEqual(255, color.R);
    Assert.AreEqual(0, color.G);
    Assert.AreEqual(127, color.B);
    Assert.AreEqual(255, color.A);
}
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[Test]
public void CreateFromString()
{
    var color = new Color("R=1,G=2,B=3,A=4");
    Assert.AreEqual(1, color.R);
    Assert.AreEqual(2, color.G);
    Assert.AreEqual(3, color.B);
    Assert.AreEqual(4, color.A);
}
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[Test]
public void CreateTransparentVersionsOfColors()
{
    Assert.AreEqual(new Color(255, 0, 0, 0), Color.Transparent(Color.Red));
    Assert.AreEqual(new Color(0, 128, 128, 0), Color.Transparent(Color.Teal));
    Assert.AreEqual(Color.TransparentWhite, Color.Transparent(Color.White));
    Assert.AreEqual(new Color(255, 0, 0, 127), new Color(Color.Red, 0.5f));
    Assert.AreEqual(new Color(0, 128, 128, 64), new Color(Color.Teal, 64));
}
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[Test]
public void MissingComponentThrowsError()
{
    Assert.Throws<Color.InvalidNumberOfComponents>(() => new Color("R=1,B=3,A=4"));
}
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[Test]
public void DuplicateComponentThrowsError()
{
    Assert.Throws<Color.InvalidNumberOfComponents>(() => new Color("R=1,B=2,B=3,A=4"));
}
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[Test]
public void MalformedComponentThrowsError()
{
    Assert.Throws<Color.InvalidNumberOfComponents>(() => new Color("R=1,G,B=3,A=4"));
}
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[Test]
public void NonByteComponentThrowsError()
{
    Assert.Throws<Color.InvalidColorComponentValue>(() => new Color("R=1,G=999,B=3,A=4"));
}
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[Test]
public void CommonColors()
{
    Assert.AreEqual(new Color(0, 0, 0), Color.Black);
    Assert.AreEqual(new Color(255, 255, 255), Color.White);
    Assert.AreEqual(new Color(0, 0, 255), Color.Blue);
    Assert.AreEqual(new Color(0, 255, 255), Color.Cyan);
    Assert.AreEqual(new Color(128, 128, 128), Color.Gray);
    Assert.AreEqual(new Color(0, 255, 0), Color.Green);
    Assert.AreEqual(new Color(255, 165, 0), Color.Orange);
    Assert.AreEqual(new Color(255, 192, 203), Color.Pink);
    Assert.AreEqual(new Color(255, 0, 255), Color.Purple);
    Assert.AreEqual(new Color(255, 0, 0), Color.Red);
    Assert.AreEqual(new Color(0, 128, 128), Color.Teal);
    Assert.AreEqual(new Color(255, 255, 0), Color.Yellow);
}
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[Test]
public void NotSoCommonColors()
{
    Assert.AreEqual(new Color(100, 149, 237), Color.CornflowerBlue);
    Assert.AreEqual(new Color(0.65f, 0.795f, 1f), Color.LightBlue);
    Assert.AreEqual(new Color(200, 200, 200), Color.VeryLightGray);
    Assert.AreEqual(new Color(165, 165, 165), Color.LightGray);
    Assert.AreEqual(new Color(89, 89, 89), Color.DarkGray);
    Assert.AreEqual(new Color(0, 100, 0), Color.DarkGreen);
    Assert.AreEqual(new Color(255, 215, 0), Color.Gold);
    Assert.AreEqual(new Color(152, 251, 152), Color.PaleGreen);
}
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[Test]
public void SizeOfColor()
{
    Assert.AreEqual(4, Color.SizeInBytes);
}
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[Test]
public void GetColorComponentsAsFloats()
{
    var color = new Color(0.2f, 0.4f, 0.5f, 0.6f);
    Assert.AreEqual(0.2f, color.RedValue);
    Assert.AreEqual(0.4f, color.GreenValue);
    Assert.AreEqual(0.498039216f, color.BlueValue);
    Assert.AreEqual(0.6f, color.AlphaValue);
}
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[Test]
public void SetColorComponentsWithFloats()
{
    var color = new Color
    {
        RedValue = 0.2f,
        GreenValue = 0.4f,
        BlueValue = 0.5f,
        AlphaValue = 0.6f
    };
    Assert.AreEqual(0.2f, color.RedValue);
    Assert.AreEqual(0.4f, color.GreenValue);
    Assert.AreEqual(0.498039216f, color.BlueValue);
    Assert.AreEqual(0.6f, color.AlphaValue);
}
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[Test]
public void PackedRgba()
{
    var color1 = new Color(10, 20, 30, 40);
    var color2 = new Color(20, 30, 40, 50);
    var color3 = new Color(200, 200, 200, 200);
    Assert.AreNotEqual(color1.PackedRgba, color2.PackedRgba);
    Assert.AreEqual(color1.PackedRgba,
        color1.R + ((uint)color1.G << 8) + ((uint)color1.B << 16) + ((uint)color1.A << 24));
    Assert.AreEqual((uint)color3.PackedRgba,
        color3.R + ((uint)color3.G << 8) + ((uint)color3.B << 16) + ((uint)color3.A << 24));
}
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[Test]
public void Equals()
{
    var color1 = new Color(10, 20, 30, 40);
    var color2 = new Color(20, 30, 40, 50);
    Assert.AreNotEqual(color1, color2);
    Assert.AreEqual(color1, new Color(10, 20, 30, 40));
    Assert.IsTrue(color1 == new Color(10, 20, 30, 40));
    Assert.IsTrue(color1 != color2);
    Assert.IsTrue(color1.Equals((object)new Color(10, 20, 30, 40)));
    Assert.AreEqual(color1.PackedRgba, color1.GetHashCode());
}
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[Test]
public void Lerp()
{
    var color1 = new Color(10, 20, 30, 40);
    var color2 = new Color(20, 30, 40, 50);
    var lerp20 = new Color(12, 22, 32, 42);
    Assert.AreEqual(lerp20, color1.Lerp(color2, 0.2f));
    Assert.AreEqual(color1, color1.Lerp(color2, 0.0f));
    Assert.AreEqual(color2, color1.Lerp(color2, 1.0f));
}
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[Test]
public void Multiply()
{
    var color1 = new Color(128, 128, 128);
    var halfColor1 = color1 * 0.5f;
    Assert.AreEqual(new Color(64, 64, 64, 127), halfColor1);
    var color2 = new Color(0.1f, 0.1f, 0.1f);
    Assert.AreEqual(new Color(25, 25, 25), color2);
    Assert.AreEqual(new Color(100, 100, 100), color2 * 4);
    var multipliedColor = color1 * color2;
    Assert.AreEqual(new Color(0.05f, 0.05f, 0.05f), multipliedColor);
}
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[Test]
public void GetRandomBrightColor()
{
    Color color = Color.GetRandomBrightColor();
    Assert.IsTrue(color.R > 127);
    Assert.IsTrue(color.G > 127);
    Assert.IsTrue(color.B > 127);
    Assert.AreEqual(255, color.A);
}
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[Test]
public void GetRandomColor()
{
    Color color = Color.GetRandomColor();
    Assert.IsTrue(color.R > 0 && color.G > 0 && color.B > 0);
    Assert.AreEqual(255, color.A);
}
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[Test]
public void GetRandomBrightColorUsingFixedRandomValues()
{
    using (Randomizer.Use(new FixedRandom(new[] { 0.0f, 0.5f, 0.999f })))
    {
        Color color = Color.GetRandomBrightColor();
        Assert.AreEqual(128, color.R);
        Assert.AreEqual(192, color.G);
        Assert.AreEqual(255, color.B);
        Assert.AreEqual(255, color.A);
    }
}
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[Test]
public void GetHeatmapColor()
{
    Assert.AreEqual(new Color(0.0f, 0.0f, 0.5f), Color.GetHeatmapColor(0.0f));
    Assert.AreEqual(new Color(0.0f, 0.0f, 0.899f), Color.GetHeatmapColor(0.1f));
    Assert.AreEqual(new Color(0.0f, 0.7f, 0.0f), Color.GetHeatmapColor(0.3f));
    Assert.AreEqual(new Color(0.5f, 1.0f, 0.5f), Color.GetHeatmapColor(0.5f));
    Assert.AreEqual(new Color(1.0f, 0.7f, 0.0f), Color.GetHeatmapColor(0.7f));
    Assert.AreEqual(new Color(0.5f, 0.0f, 0.0f), Color.GetHeatmapColor(1.0f));
    Assert.AreEqual(Color.White, Color.GetHeatmapColor(2.0f));
}
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[Test]
public void GetBgraBytesFromColorArrayWithAlpha()
{
    var colors = new[] { Color.Black, Color.White, new Color(255, 0, 0, 128) };
    Assert.AreEqual(new byte[] { 0, 0, 0, 255, 255, 255, 255, 255, 255, 0, 0, 128 },
        Color.GetRgbaBytesFromArray(colors));
}
See Also
DeltaEngine.Tests.Datatypes Namespace