public (double, double, double) ColorAtDeconstruct(double location)
{
if (_points.Count == 0)
{
return(0, 0, 0);
}
var i = 0;
LedColorGradientPoint start, end;
do
{
start = _points[i++];
if (i >= _points.Count)
{
return(start.Color.R, start.Color.G, start.Color.B);
}
end = _points[i];
} while (!(location >= start.Location && location <= end.Location));
var correctedLocation = (location - start.Location) / (end.Location - start.Location);
return(LedColor.LerpDeconstruct(correctedLocation, start.Color, end.Color));
}
public static (double, double, double) LerpDeconstruct(double t, LedColor from, LedColor to)
{
var r = from.R * (1 - t) + to.R * t;
var g = from.G * (1 - t) + to.G * t;
var b = from.B * (1 - t) + to.B * t;
return(r, g, b);
}
public static (double, double, double) LerpSmooth(double t, LedColor from, LedColor to)
{
t = Math.Max(Math.Min(t, 1), 0);
var r = from.R * (1 - t) + to.R * t;
var g = from.G * (1 - t) + to.G * t;
var b = from.B * (1 - t) + to.B * t;
return(r, g, b);
}
public static (double, double, double) ToHsv(LedColor color)
{
var max = Math.Max(color.R, Math.Max(color.G, color.B));
var min = Math.Min(color.R, Math.Min(color.G, color.B));
var delta = max - min;
var hue = 0d;
if (delta != 0)
{
if (color.R == max)
{
hue = (color.G - color.B) / (double)delta;
}
else if (color.G == max)
{
hue = 2d + (color.B - color.R) / (double)delta;
}
else if (color.B == max)
{
hue = 4d + (color.R - color.G) / (double)delta;
}
}
hue *= 60;
if (hue < 0.0)
{
hue += 360;
}
var saturation = (max == 0) ? 0 : 1d - (1d * min / max);
var value = max / 255d;
return(hue, saturation, value);
}
public static LedColor Lerp(double t, LedColor from, LedColor to)
{
var(r, g, b) = LerpSmooth(t, from, to);
return(new LedColor((byte)Math.Round(r), (byte)Math.Round(g), (byte)Math.Round(b)));
}
public (double r, double g, double b) LerpSmooth(LedColor to, double t) => LerpSmooth(t, this, to);
public LedColor Lerp(LedColor to, double t) => Lerp(t, this, to);
public static int Pack(LedColor color) => (color.R) | (color.G << 8) | (color.B << 16);
public static LedColor ChangeValue(LedColor color, double value)
{
var(h, s, _) = color.ToHsv();
return(FromHsv(h, s, value));
}
public static LedColor ChangeSaturation(LedColor color, double saturation)
{
var(h, _, v) = color.ToHsv();
return(FromHsv(h, saturation, v));
}
public static LedColor ChangeHue(LedColor color, double hue)
{
var(_, s, v) = color.ToHsv();
return(FromHsv(hue, s, v));
}
public static LedColor Lerp(double t, LedColor from, LedColor to)
{
var(r, g, b) = LerpSmooth(t, from, to);
return(new LedColor((byte)r, (byte)g, (byte)b));
}
public (double, double, double) LerpSmooth(LedColor to, double t) => LerpSmooth(t, this, to);
public LedColorGradientPoint(double location, LedColor color)
{
Location = location;
Color = color;
}