/// <summary>
/// Returns the RGB color from a specific position of the color temperature scale.
/// </summary>
/// <param name="y">The vertical position from up to bottom.</param>
/// <param name="height">Total height of the scale.</param>
/// <returns></returns>
public Color PickTemperaturePixelColor(int y, int height)
{
if (y <= 6 || height - y <= 6)
{
return(Colors.Transparent);
}
return(ColorConverters.ColorTemperatue((int)Math.Round((1 - (double)y / height) * 4500 + 2000)));
}
/// <summary>
/// Returns the RGB color from a specific position of the main wheel.
/// </summary>
/// <param name="x">The horizontal position from left to right.</param>
/// <param name="y">The vertical position from up to bottom.</param>
/// <param name="radius">The radius from the wheel.</param>
/// <param name="colorTemperature">Color wheel mode.</param>
/// <returns></returns>
public Color PickWheelPixelColor(int x, int y, int radius, bool colorTemperature)
{
if (colorTemperature)
{
return(ColorConverters.ColorTemperatue((int)Math.Round((1 - (double)y / (2 * radius)) * 4500 + 2000)));
}
var distanceFromCenter = Math.Sqrt(Math.Pow(x - radius, 2) + Math.Pow(y - radius, 2));
if (distanceFromCenter > radius)
{
return(Colors.Transparent);
}
var angle = Math.Atan2(y - radius, x - radius) + Math.PI / 2;
if (angle < 0)
{
angle += 2 * Math.PI;
}
return(ColorConverters.HueSaturation(angle, distanceFromCenter / radius));
}
