/// <summary>
/// Creates a random color, but accepts a given random class instead of creating a new one.
/// </summary>
/// <param name="rnd">The random generator.</param>
/// <returns>The created random color.</returns>
protected Color CreateRandomColor(Random rnd)
{
var startColor = EditorSettings.StartColor;
var endColor = EditorSettings.EndColor;
if (EditorSettings.HueSatLight)
{
double hLow = startColor.GetHue();
var dH = endColor.GetHue() - hLow;
double sLow = startColor.GetSaturation();
var ds = endColor.GetSaturation() - sLow;
double lLow = startColor.GetBrightness();
var dl = endColor.GetBrightness() - lLow;
var aLow = startColor.A / 255.0;
var da = (endColor.A - aLow) / 255.0;
return(SymbologyGlobal.ColorFromHsl((rnd.NextDouble() * dH) + hLow, (rnd.NextDouble() * ds) + sLow, (rnd.NextDouble() * dl) + lLow).ToTransparent((float)((rnd.NextDouble() * da) + aLow)));
}
int rLow = Math.Min(startColor.R, endColor.R);
int rHigh = Math.Max(startColor.R, endColor.R);
int gLow = Math.Min(startColor.G, endColor.G);
int gHigh = Math.Max(startColor.G, endColor.G);
int bLow = Math.Min(startColor.B, endColor.B);
int bHigh = Math.Max(startColor.B, endColor.B);
int iaLow = Math.Min(startColor.A, endColor.A);
int aHigh = Math.Max(startColor.A, endColor.A);
return(Color.FromArgb(rnd.Next(iaLow, aHigh), rnd.Next(rLow, rHigh), rnd.Next(gLow, gHigh), rnd.Next(bLow, bHigh)));
}
/// <summary>
/// Initializes a new instance of the <see cref="EditorSettings"/> class.
/// </summary>
public EditorSettings()
{
_hsl = true;
_useColor = true;
_startColor = SymbologyGlobal.ColorFromHsl(5, .7, .7);
_endColor = SymbologyGlobal.ColorFromHsl(345, .8, .8);
_maxSampleCount = 10000;
_intervalMethod = IntervalMethod.EqualInterval;
_rampColors = true;
_intervalSnapMethod = IntervalSnapMethod.DataValue;
_intervalRoundingDigits = 0;
_numBreaks = 5;
}
/// <summary>
/// Creates a color with the same hue and saturation but that is slightly darker than this color.
/// </summary>
/// <param name="self">The starting color.</param>
/// <param name="brightness">The floating point value of brightness to add to this color.</param>
/// if the combined result is less than 0, the result will equal 0.
/// <returns>A color darker than this color.</returns>
public static Color Darker(this Color self, float brightness)
{
float b = self.GetBrightness() - brightness;
if (b < 0F)
{
b = 0F;
}
if (b > 1F)
{
b = 1F;
}
return(Color.FromArgb(self.A, SymbologyGlobal.ColorFromHsl(self.GetHue(), self.GetSaturation(), b)));
}
private static List <Color> CreateRampColors(int numColors, float minSat, float minLight, int minHue, float maxSat, float maxLight, int maxHue, int hueShift, int minAlpha, int maxAlpha)
{
List <Color> result = new List <Color>(numColors);
double ds = (maxSat - (double)minSat) / numColors;
double dh = (maxHue - (double)minHue) / numColors;
double dl = (maxLight - (double)minLight) / numColors;
double dA = (maxAlpha - (double)minAlpha) / numColors;
for (int i = 0; i < numColors; i++)
{
double h = (minHue + dh * i) + hueShift % 360;
double s = minSat + ds * i;
double l = minLight + dl * i;
float a = (float)(minAlpha + dA * i) / 255f;
result.Add(SymbologyGlobal.ColorFromHsl(h, s, l).ToTransparent(a));
}
return(result);
}
private static List <Color> CreateRampColors(int numColors, float minSat, float minLight, int minHue, float maxSat, float maxLight, int maxHue, int hueShift, int minAlpha, int maxAlpha)
{
var result = new List <Color>(numColors);
var ds = (maxSat - (double)minSat) / numColors;
var dh = (maxHue - (double)minHue) / numColors;
var dl = (maxLight - (double)minLight) / numColors;
var dA = (maxAlpha - (double)minAlpha) / numColors;
for (var i = 0; i < numColors; i++)
{
var h = (minHue + (dh * i)) + (hueShift % 360);
var s = minSat + (ds * i);
var l = minLight + (dl * i);
var a = (float)(minAlpha + (dA * i)) / 255f;
result.Add(SymbologyGlobal.ColorFromHsl(h, s, l).ToTransparent(a));
}
return(result);
}