public virtual void MakeLighterTest()
{
DeviceRgb rgbColor = new DeviceRgb(50, 100, 150);
DeviceRgb darkerRgbColor = DeviceRgb.MakeLighter(rgbColor);
// check the resultant darkness of RGB items with using this multiplier
float multiplier = Math.Min(1f, 150f / 255 + 0.33f) / (150f / 255);
NUnit.Framework.Assert.AreEqual(multiplier * (50f / 255), darkerRgbColor.GetColorValue()[0], 0.0001);
NUnit.Framework.Assert.AreEqual(multiplier * (100f / 255), darkerRgbColor.GetColorValue()[1], 0.0001);
NUnit.Framework.Assert.AreEqual(multiplier * (150f / 255), darkerRgbColor.GetColorValue()[2], 0.0001);
}
/// <summary>
/// Converts
/// <see cref="DeviceRgb">DeviceRgb</see>
/// color to
/// <see cref="DeviceCmyk">DeviceCmyk</see>
/// color
/// </summary>
/// <param name="rgbColor">the DeviceRgb color which will be converted to DeviceCmyk color</param>
/// <returns>converted color</returns>
public static DeviceCmyk ConvertRgbToCmyk(DeviceRgb rgbColor)
{
float redComp = rgbColor.GetColorValue()[0];
float greenComp = rgbColor.GetColorValue()[1];
float blueComp = rgbColor.GetColorValue()[2];
float k = 1 - Math.Max(Math.Max(redComp, greenComp), blueComp);
float c = (1 - redComp - k) / (1 - k);
float m = (1 - greenComp - k) / (1 - k);
float y = (1 - blueComp - k) / (1 - k);
return(new DeviceCmyk(c, m, y, k));
}
public virtual void ColorByAWTColorTest()
{
System.Drawing.Color color = System.Drawing.Color.FromArgb(50, 100, 150);
DeviceRgb rgbColor = new DeviceRgb(color);
float[] rgbColorValue = rgbColor.GetColorValue();
NUnit.Framework.Assert.AreEqual(50f / 255, rgbColorValue[0], 0.0001);
NUnit.Framework.Assert.AreEqual(100f / 255, rgbColorValue[1], 0.0001);
NUnit.Framework.Assert.AreEqual(150f / 255, rgbColorValue[2], 0.0001);
}
private float GetSumOfColorValues(DeviceRgb deviceRgb)
{
float sum = 0;
float[] values = deviceRgb.GetColorValue();
for (int i = 0; i < values.Length; i++)
{
sum += values[i];
}
return(sum);
}
public virtual void ColorByAWTColorConstantTest()
{
// RED
DeviceRgb rgbColor = new DeviceRgb(System.Drawing.Color.Red);
float[] rgbColorValue = rgbColor.GetColorValue();
NUnit.Framework.Assert.AreEqual(1, rgbColorValue[0], 0.0001);
NUnit.Framework.Assert.AreEqual(0, rgbColorValue[1], 0.0001);
NUnit.Framework.Assert.AreEqual(0, rgbColorValue[2], 0.0001);
// GREEN
rgbColor = new DeviceRgb(System.Drawing.Color.Lime);
rgbColorValue = rgbColor.GetColorValue();
NUnit.Framework.Assert.AreEqual(0, rgbColorValue[0], 0.0001);
NUnit.Framework.Assert.AreEqual(1, rgbColorValue[1], 0.0001);
NUnit.Framework.Assert.AreEqual(0, rgbColorValue[2], 0.0001);
// BLUE
rgbColor = new DeviceRgb(System.Drawing.Color.Blue);
rgbColorValue = rgbColor.GetColorValue();
NUnit.Framework.Assert.AreEqual(0, rgbColorValue[0], 0.0001);
NUnit.Framework.Assert.AreEqual(0, rgbColorValue[1], 0.0001);
NUnit.Framework.Assert.AreEqual(1, rgbColorValue[2], 0.0001);
}
