//Method to find the approximate color
public async Task <string> getClosestColor()
{
//Create an object to store the raw color data
RgbData rgbData = await getRgbData();
//Create a variable to store the closest color. Black by default.
KnownColor closestColor = colorList[0];
//Create a variable to store the minimum Euclidean distance between 2 colors
double minDiff = double.MaxValue;
//For every known color, check the Euclidean distance and store the minimum distance
foreach (var color in colorList)
{
Color colorValue = color.colorValue;
double diff = Math.Pow((colorValue.R - rgbData.Red), 2) +
Math.Pow((colorValue.G - rgbData.Green), 2) +
Math.Pow((colorValue.B - rgbData.Blue), 2);
Debug.WriteLine("{0} diff={1}", color.colorName, diff);
if (diff < minDiff)
{
minDiff = diff;
closestColor = color;
}
}
//Write the approximate color to the debug console
Debug.WriteLine("Approximate color: " + closestColor.colorName + " - "
+ closestColor.colorValue.ToString());
//Return the approximate color
return(closestColor.colorName);
}
//Method to read the RGB data
public async Task <RgbData> getRgbData()
{
//Create an object to store the raw color data
RgbData rgbData = new RgbData();
//First get the raw color data
ColorData colorData = await getRawData();
//Check if clear data is received
if (colorData.Clear > 0)
{
//Find the RGB values from the raw data using the clear data as reference
rgbData.Red = (int)(colorData.Red * 255 / colorData.Clear);
rgbData.Blue = (int)(colorData.Blue * 255 / colorData.Clear);
rgbData.Green = (int)(colorData.Green * 255 / colorData.Clear);
}
//Write the RGB values to the debug console
Debug.WriteLine("RGB Data - red: {0}, green: {1}, blue: {2}", rgbData.Red, rgbData.Green, rgbData.Blue);
//Return the data
return(rgbData);
}