public static Color GenerateHSLuvColor(bool back = true)
{
List <double> list = new List <double>();
double h;
double s;
double l;
if (back)
{
l = rnd.NextDouble() * (90.0 - 55.5) + 55.5;
s = rnd.NextDouble() * (67.0 - 40.0) + 40.0;
}
else
{
l = rnd.NextDouble() * (55.5 - 10.0) + 10.0;
s = rnd.NextDouble() * (99.0 - 30.0) + 30.0;
}
h = rnd.NextDouble() * (359.0 - 1.0) + 1.0;
list.Add(h);
list.Add(s);
list.Add(l);
var col = HsluvConverter.HsluvToRgb(list);
var r = Convert.ToByte(col[0] * 255);
var g = Convert.ToByte(col[1] * 255);
var b = Convert.ToByte(col[2] * 255);
return(Color.FromArgb(r, g, b));
}
/// <summary>/// Uses the HSLuv color space (via a package) to create maximally perceptually-distinct colors for use in legends.</summary>
private static GH_Colour GetPerceptualColorForTreeItem(double treeCount, double itemPosition)
{
var HsluvValues = new double[] {
(itemPosition / treeCount * 360.0), // Hue, from 0-360
100.0, // Maximimise saturation
50.0 // Halfway brightness
};
var RGBRaw = HsluvConverter.HsluvToRgb(HsluvValues); // Values are 0-1
var RGBValues = RGBRaw.Select(value => value * 255).ToList(); // Values now 0-2
var RGBColor = Color.FromArgb((int)RGBValues[0], (int)RGBValues[1], (int)RGBValues[2]);
return(new GH_Colour(RGBColor));
}
static void Main(string[] args)
{
var assembly = Assembly.GetExecutingAssembly();
var resourceName = "JsonSnapshotRev3";
using (Stream stream = assembly.GetManifestResourceStream(resourceName))
using (StreamReader reader = new StreamReader(stream))
{
var data = Json.Deserialize(reader.ReadToEnd()) as Dictionary <string, object>;
foreach (KeyValuePair <string, object> pair in data)
{
var expected = pair.Value as Dictionary <string, object>;
// test forward functions
var test_rgb = HsluvConverter.HexToRgb(pair.Key);
AssertTuplesClose(test_rgb, Cast(expected["rgb"]));
var test_xyz = HsluvConverter.RgbToXyz(test_rgb);
AssertTuplesClose(test_xyz, Cast(expected["xyz"]));
var test_luv = HsluvConverter.XyzToLuv(test_xyz);
AssertTuplesClose(test_luv, Cast(expected["luv"]));
var test_lch = HsluvConverter.LuvToLch(test_luv);
AssertTuplesClose(test_lch, Cast(expected["lch"]));
var test_hsluv = HsluvConverter.LchToHsluv(test_lch);
AssertTuplesClose(test_hsluv, Cast(expected["hsluv"]));
var test_hpluv = HsluvConverter.LchToHpluv(test_lch);
AssertTuplesClose(test_hpluv, Cast(expected["hpluv"]));
// test backward functions
test_lch = HsluvConverter.HsluvToLch(Cast(expected["hsluv"]));
AssertTuplesClose(test_lch, Cast(expected["lch"]));
test_lch = HsluvConverter.HpluvToLch(Cast(expected["hpluv"]));
AssertTuplesClose(test_lch, Cast(expected["lch"]));
test_luv = HsluvConverter.LchToLuv(test_lch);
AssertTuplesClose(test_luv, Cast(expected["luv"]));
test_xyz = HsluvConverter.LuvToXyz(Cast(expected["luv"]));
AssertTuplesClose(test_xyz, Cast(expected["xyz"]));
test_rgb = HsluvConverter.XyzToRgb(Cast(expected["xyz"]));
AssertTuplesClose(test_rgb, Cast(expected["rgb"]));
AssertAreEqual(HsluvConverter.RgbToHex(test_rgb), pair.Key);
// full test
AssertAreEqual(HsluvConverter.HsluvToHex(Cast(expected["hsluv"])), pair.Key);
AssertAreEqual(HsluvConverter.HpluvToHex(Cast(expected["hpluv"])), pair.Key);
AssertTuplesClose(Cast(expected["hsluv"]), HsluvConverter.HexToHsluv(pair.Key));
AssertTuplesClose(Cast(expected["hpluv"]), HsluvConverter.HexToHpluv(pair.Key));
}
}
Console.WriteLine("Success!");
}
