using System.Windows.Media;
using System.Windows.Media.Imaging;
namespace WpfDisplay.Helper;
public static class SpectrogramPalettes
{
private static Color ColorFromRgbFloats(double r, double g, double b) => Color.FromRgb((byte)(255 * r), (byte)(255 * g), (byte)(255 * b));
/// <summary>
/// A nice palette from matplotlib, <a href="https://www.youtube.com/watch?v=xAoljeRJ3lU">Viridis</a>.
/// </summary>
public static readonly BitmapPalette Viridis = new(new Color[256]
{
ColorFromRgbFloats(0.267004, 0.004874, 0.329415),
ColorFromRgbFloats(0.268510, 0.009605, 0.335427),
ColorFromRgbFloats(0.269944, 0.014625, 0.341379),
ColorFromRgbFloats(0.271305, 0.019942, 0.347269),
ColorFromRgbFloats(0.272594, 0.025563, 0.353093),
ColorFromRgbFloats(0.273809, 0.031497, 0.358853),
ColorFromRgbFloats(0.274952, 0.037752, 0.364543),
ColorFromRgbFloats(0.276022, 0.044167, 0.370164),
ColorFromRgbFloats(0.277018, 0.050344, 0.375715),
ColorFromRgbFloats(0.277941, 0.056324, 0.381191),
ColorFromRgbFloats(0.278791, 0.062145, 0.386592),
ColorFromRgbFloats(0.279566, 0.067836, 0.391917),
ColorFromRgbFloats(0.280267, 0.073417, 0.397163),
ColorFromRgbFloats(0.280894, 0.078907, 0.402329),
ColorFromRgbFloats(0.281446, 0.084320, 0.407414),
ColorFromRgbFloats(0.281924, 0.089666, 0.412415),
ColorFromRgbFloats(0.282327, 0.094955, 0.417331),
ColorFromRgbFloats(0.282656, 0.100196, 0.422160),
ColorFromRgbFloats(0.282910, 0.105393, 0.426902),
ColorFromRgbFloats(0.283091, 0.110553, 0.431554),
ColorFromRgbFloats(0.283197, 0.115680, 0.436115),
ColorFromRgbFloats(0.283229, 0.120777, 0.440584),
ColorFromRgbFloats(0.283187, 0.125848, 0.444960),
ColorFromRgbFloats(0.283072, 0.130895, 0.449241),
ColorFromRgbFloats(0.282884, 0.135920, 0.453427),
ColorFromRgbFloats(0.282623, 0.140926, 0.457517),
ColorFromRgbFloats(0.282290, 0.145912, 0.461510),
ColorFromRgbFloats(0.281887, 0.150881, 0.465405),
ColorFromRgbFloats(0.281412, 0.155834, 0.469201),
ColorFromRgbFloats(0.280868, 0.160771, 0.472899),
ColorFromRgbFloats(0.280255, 0.165693, 0.476498),
ColorFromRgbFloats(0.279574, 0.170599, 0.479997),
ColorFromRgbFloats(0.278826, 0.175490, 0.483397),
ColorFromRgbFloats(0.278012, 0.180367, 0.486697),
ColorFromRgbFloats(0.277134, 0.185228, 0.489898),
ColorFromRgbFloats(0.276194, 0.190074, 0.493001),
ColorFromRgbFloats(0.275191, 0.194905, 0.496005),
ColorFromRgbFloats(0.274128, 0.199721, 0.498911),
ColorFromRgbFloats(0.273006, 0.204520, 0.501721),
ColorFromRgbFloats(0.271828, 0.209303, 0.504434),
ColorFromRgbFloats(0.270595, 0.214069, 0.507052),
ColorFromRgbFloats(0.269308, 0.218818, 0.509577),
ColorFromRgbFloats(0.267968, 0.223549, 0.512008),
ColorFromRgbFloats(0.266580, 0.228262, 0.514349),
ColorFromRgbFloats(0.265145, 0.232956, 0.516599),
ColorFromRgbFloats(0.263663, 0.237631, 0.518762),
ColorFromRgbFloats(0.262138, 0.242286, 0.520837),
ColorFromRgbFloats(0.260571, 0.246922, 0.522828),
ColorFromRgbFloats(0.258965, 0.251537, 0.524736),
ColorFromRgbFloats(0.257322, 0.256130, 0.526563),
ColorFromRgbFloats(0.255645, 0.260703, 0.528312),
ColorFromRgbFloats(0.253935, 0.265254, 0.529983),
ColorFromRgbFloats(0.252194, 0.269783, 0.531579),
ColorFromRgbFloats(0.250425, 0.274290, 0.533103),
ColorFromRgbFloats(0.248629, 0.278775, 0.534556),
ColorFromRgbFloats(0.246811, 0.283237, 0.535941),
ColorFromRgbFloats(0.244972, 0.287675, 0.537260),
ColorFromRgbFloats(0.243113, 0.292092, 0.538516),
ColorFromRgbFloats(0.241237, 0.296485, 0.539709),
ColorFromRgbFloats(0.239346, 0.300855, 0.540844),
ColorFromRgbFloats(0.237441, 0.305202, 0.541921),
ColorFromRgbFloats(0.235526, 0.309527, 0.542944),
ColorFromRgbFloats(0.233603, 0.313828, 0.543914),
ColorFromRgbFloats(0.231674, 0.318106, 0.544834),
ColorFromRgbFloats(0.229739, 0.322361, 0.545706),
ColorFromRgbFloats(0.227802, 0.326594, 0.546532),
ColorFromRgbFloats(0.225863, 0.330805, 0.547314),
ColorFromRgbFloats(0.223925, 0.334994, 0.548053),
ColorFromRgbFloats(0.221989, 0.339161, 0.548752),
ColorFromRgbFloats(0.220057, 0.343307, 0.549413),
ColorFromRgbFloats(0.218130, 0.347432, 0.550038),
ColorFromRgbFloats(0.216210, 0.351535, 0.550627),
ColorFromRgbFloats(0.214298, 0.355619, 0.551184),
ColorFromRgbFloats(0.212395, 0.359683, 0.551710),
ColorFromRgbFloats(0.210503, 0.363727, 0.552206),
ColorFromRgbFloats(0.208623, 0.367752, 0.552675),
ColorFromRgbFloats(0.206756, 0.371758, 0.553117),
ColorFromRgbFloats(0.204903, 0.375746, 0.553533),
ColorFromRgbFloats(0.203063, 0.379716, 0.553925),
ColorFromRgbFloats(0.201239, 0.383670, 0.554294),
ColorFromRgbFloats(0.199430, 0.387607, 0.554642),
ColorFromRgbFloats(0.197636, 0.391528, 0.554969),
ColorFromRgbFloats(0.195860, 0.395433, 0.555276),
ColorFromRgbFloats(0.194100, 0.399323, 0.555565),
ColorFromRgbFloats(0.192357, 0.403199, 0.555836),
ColorFromRgbFloats(0.190631, 0.407061, 0.556089),
ColorFromRgbFloats(0.188923, 0.410910, 0.556326),
ColorFromRgbFloats(0.187231, 0.414746, 0.556547),
ColorFromRgbFloats(0.185556, 0.418570, 0.556753),
ColorFromRgbFloats(0.183898, 0.422383, 0.556944),
ColorFromRgbFloats(0.182256, 0.426184, 0.557120),
ColorFromRgbFloats(0.180629, 0.429975, 0.557282),
ColorFromRgbFloats(0.179019, 0.433756, 0.557430),
ColorFromRgbFloats(0.177423, 0.437527, 0.557565),
ColorFromRgbFloats(0.175841, 0.441290, 0.557685),
ColorFromRgbFloats(0.174274, 0.445044, 0.557792),
ColorFromRgbFloats(0.172719, 0.448791, 0.557885),
ColorFromRgbFloats(0.171176, 0.452530, 0.557965),
ColorFromRgbFloats(0.169646, 0.456262, 0.558030),
ColorFromRgbFloats(0.168126, 0.459988, 0.558082),
ColorFromRgbFloats(0.166617, 0.463708, 0.558119),
ColorFromRgbFloats(0.165117, 0.467423, 0.558141),
ColorFromRgbFloats(0.163625, 0.471133, 0.558148),
ColorFromRgbFloats(0.162142, 0.474838, 0.558140),
ColorFromRgbFloats(0.160665, 0.478540, 0.558115),
ColorFromRgbFloats(0.159194, 0.482237, 0.558073),
ColorFromRgbFloats(0.157729, 0.485932, 0.558013),
ColorFromRgbFloats(0.156270, 0.489624, 0.557936),
ColorFromRgbFloats(0.154815, 0.493313, 0.557840),
ColorFromRgbFloats(0.153364, 0.497000, 0.557724),
ColorFromRgbFloats(0.151918, 0.500685, 0.557587),
ColorFromRgbFloats(0.150476, 0.504369, 0.557430),
ColorFromRgbFloats(0.149039, 0.508051, 0.557250),
ColorFromRgbFloats(0.147607, 0.511733, 0.557049),
ColorFromRgbFloats(0.146180, 0.515413, 0.556823),
ColorFromRgbFloats(0.144759, 0.519093, 0.556572),
ColorFromRgbFloats(0.143343, 0.522773, 0.556295),
ColorFromRgbFloats(0.141935, 0.526453, 0.555991),
ColorFromRgbFloats(0.140536, 0.530132, 0.555659),
ColorFromRgbFloats(0.139147, 0.533812, 0.555298),
ColorFromRgbFloats(0.137770, 0.537492, 0.554906),
ColorFromRgbFloats(0.136408, 0.541173, 0.554483),
ColorFromRgbFloats(0.135066, 0.544853, 0.554029),
ColorFromRgbFloats(0.133743, 0.548535, 0.553541),
ColorFromRgbFloats(0.132444, 0.552216, 0.553018),
ColorFromRgbFloats(0.131172, 0.555899, 0.552459),
ColorFromRgbFloats(0.129933, 0.559582, 0.551864),
ColorFromRgbFloats(0.128729, 0.563265, 0.551229),
ColorFromRgbFloats(0.127568, 0.566949, 0.550556),
ColorFromRgbFloats(0.126453, 0.570633, 0.549841),
ColorFromRgbFloats(0.125394, 0.574318, 0.549086),
ColorFromRgbFloats(0.124395, 0.578002, 0.548287),
ColorFromRgbFloats(0.123463, 0.581687, 0.547445),
ColorFromRgbFloats(0.122606, 0.585371, 0.546557),
ColorFromRgbFloats(0.121831, 0.589055, 0.545623),
ColorFromRgbFloats(0.121148, 0.592739, 0.544641),
ColorFromRgbFloats(0.120565, 0.596422, 0.543611),
ColorFromRgbFloats(0.120092, 0.600104, 0.542530),
ColorFromRgbFloats(0.119738, 0.603785, 0.541400),
ColorFromRgbFloats(0.119512, 0.607464, 0.540218),
ColorFromRgbFloats(0.119423, 0.611141, 0.538982),
ColorFromRgbFloats(0.119483, 0.614817, 0.537692),
ColorFromRgbFloats(0.119699, 0.618490, 0.536347),
ColorFromRgbFloats(0.120081, 0.622161, 0.534946),
ColorFromRgbFloats(0.120638, 0.625828, 0.533488),
ColorFromRgbFloats(0.121380, 0.629492, 0.531973),
ColorFromRgbFloats(0.122312, 0.633153, 0.530398),
ColorFromRgbFloats(0.123444, 0.636809, 0.528763),
ColorFromRgbFloats(0.124780, 0.640461, 0.527068),
ColorFromRgbFloats(0.126326, 0.644107, 0.525311),
ColorFromRgbFloats(0.128087, 0.647749, 0.523491),
ColorFromRgbFloats(0.130067, 0.651384, 0.521608),
ColorFromRgbFloats(0.132268, 0.655014, 0.519661),
ColorFromRgbFloats(0.134692, 0.658636, 0.517649),
ColorFromRgbFloats(0.137339, 0.662252, 0.515571),
ColorFromRgbFloats(0.140210, 0.665859, 0.513427),
ColorFromRgbFloats(0.143303, 0.669459, 0.511215),
ColorFromRgbFloats(0.146616, 0.673050, 0.508936),
ColorFromRgbFloats(0.150148, 0.676631, 0.506589),
ColorFromRgbFloats(0.153894, 0.680203, 0.504172),
ColorFromRgbFloats(0.157851, 0.683765, 0.501686),
ColorFromRgbFloats(0.162016, 0.687316, 0.499129),
ColorFromRgbFloats(0.166383, 0.690856, 0.496502),
ColorFromRgbFloats(0.170948, 0.694384, 0.493803),
ColorFromRgbFloats(0.175707, 0.697900, 0.491033),
ColorFromRgbFloats(0.180653, 0.701402, 0.488189),
ColorFromRgbFloats(0.185783, 0.704891, 0.485273),
ColorFromRgbFloats(0.191090, 0.708366, 0.482284),
ColorFromRgbFloats(0.196571, 0.711827, 0.479221),
ColorFromRgbFloats(0.202219, 0.715272, 0.476084),
ColorFromRgbFloats(0.208030, 0.718701, 0.472873),
ColorFromRgbFloats(0.214000, 0.722114, 0.469588),
ColorFromRgbFloats(0.220124, 0.725509, 0.466226),
ColorFromRgbFloats(0.226397, 0.728888, 0.462789),
ColorFromRgbFloats(0.232815, 0.732247, 0.459277),
ColorFromRgbFloats(0.239374, 0.735588, 0.455688),
ColorFromRgbFloats(0.246070, 0.738910, 0.452024),
ColorFromRgbFloats(0.252899, 0.742211, 0.448284),
ColorFromRgbFloats(0.259857, 0.745492, 0.444467),
ColorFromRgbFloats(0.266941, 0.748751, 0.440573),
ColorFromRgbFloats(0.274149, 0.751988, 0.436601),
ColorFromRgbFloats(0.281477, 0.755203, 0.432552),
ColorFromRgbFloats(0.288921, 0.758394, 0.428426),
ColorFromRgbFloats(0.296479, 0.761561, 0.424223),
ColorFromRgbFloats(0.304148, 0.764704, 0.419943),
ColorFromRgbFloats(0.311925, 0.767822, 0.415586),
ColorFromRgbFloats(0.319809, 0.770914, 0.411152),
ColorFromRgbFloats(0.327796, 0.773980, 0.406640),
ColorFromRgbFloats(0.335885, 0.777018, 0.402049),
ColorFromRgbFloats(0.344074, 0.780029, 0.397381),
ColorFromRgbFloats(0.352360, 0.783011, 0.392636),
ColorFromRgbFloats(0.360741, 0.785964, 0.387814),
ColorFromRgbFloats(0.369214, 0.788888, 0.382914),
ColorFromRgbFloats(0.377779, 0.791781, 0.377939),
ColorFromRgbFloats(0.386433, 0.794644, 0.372886),
ColorFromRgbFloats(0.395174, 0.797475, 0.367757),
ColorFromRgbFloats(0.404001, 0.800275, 0.362552),
ColorFromRgbFloats(0.412913, 0.803041, 0.357269),
ColorFromRgbFloats(0.421908, 0.805774, 0.351910),
ColorFromRgbFloats(0.430983, 0.808473, 0.346476),
ColorFromRgbFloats(0.440137, 0.811138, 0.340967),
ColorFromRgbFloats(0.449368, 0.813768, 0.335384),
ColorFromRgbFloats(0.458674, 0.816363, 0.329727),
ColorFromRgbFloats(0.468053, 0.818921, 0.323998),
ColorFromRgbFloats(0.477504, 0.821444, 0.318195),
ColorFromRgbFloats(0.487026, 0.823929, 0.312321),
ColorFromRgbFloats(0.496615, 0.826376, 0.306377),
ColorFromRgbFloats(0.506271, 0.828786, 0.300362),
ColorFromRgbFloats(0.515992, 0.831158, 0.294279),
ColorFromRgbFloats(0.525776, 0.833491, 0.288127),
ColorFromRgbFloats(0.535621, 0.835785, 0.281908),
ColorFromRgbFloats(0.545524, 0.838039, 0.275626),
ColorFromRgbFloats(0.555484, 0.840254, 0.269281),
ColorFromRgbFloats(0.565498, 0.842430, 0.262877),
ColorFromRgbFloats(0.575563, 0.844566, 0.256415),
ColorFromRgbFloats(0.585678, 0.846661, 0.249897),
ColorFromRgbFloats(0.595839, 0.848717, 0.243329),
ColorFromRgbFloats(0.606045, 0.850733, 0.236712),
ColorFromRgbFloats(0.616293, 0.852709, 0.230052),
ColorFromRgbFloats(0.626579, 0.854645, 0.223353),
ColorFromRgbFloats(0.636902, 0.856542, 0.216620),
ColorFromRgbFloats(0.647257, 0.858400, 0.209861),
ColorFromRgbFloats(0.657642, 0.860219, 0.203082),
ColorFromRgbFloats(0.668054, 0.861999, 0.196293),
ColorFromRgbFloats(0.678489, 0.863742, 0.189503),
ColorFromRgbFloats(0.688944, 0.865448, 0.182725),
ColorFromRgbFloats(0.699415, 0.867117, 0.175971),
ColorFromRgbFloats(0.709898, 0.868751, 0.169257),
ColorFromRgbFloats(0.720391, 0.870350, 0.162603),
ColorFromRgbFloats(0.730889, 0.871916, 0.156029),
ColorFromRgbFloats(0.741388, 0.873449, 0.149561),
ColorFromRgbFloats(0.751884, 0.874951, 0.143228),
ColorFromRgbFloats(0.762373, 0.876424, 0.137064),
ColorFromRgbFloats(0.772852, 0.877868, 0.131109),
ColorFromRgbFloats(0.783315, 0.879285, 0.125405),
ColorFromRgbFloats(0.793760, 0.880678, 0.120005),
ColorFromRgbFloats(0.804182, 0.882046, 0.114965),
ColorFromRgbFloats(0.814576, 0.883393, 0.110347),
ColorFromRgbFloats(0.824940, 0.884720, 0.106217),
ColorFromRgbFloats(0.835270, 0.886029, 0.102646),
ColorFromRgbFloats(0.845561, 0.887322, 0.099702),
ColorFromRgbFloats(0.855810, 0.888601, 0.097452),
ColorFromRgbFloats(0.866013, 0.889868, 0.095953),
ColorFromRgbFloats(0.876168, 0.891125, 0.095250),
ColorFromRgbFloats(0.886271, 0.892374, 0.095374),
ColorFromRgbFloats(0.896320, 0.893616, 0.096335),
ColorFromRgbFloats(0.906311, 0.894855, 0.098125),
ColorFromRgbFloats(0.916242, 0.896091, 0.100717),
ColorFromRgbFloats(0.926106, 0.897330, 0.104071),
ColorFromRgbFloats(0.935904, 0.898570, 0.108131),
ColorFromRgbFloats(0.945636, 0.899815, 0.112838),
ColorFromRgbFloats(0.955300, 0.901065, 0.118128),
ColorFromRgbFloats(0.964894, 0.902323, 0.123941),
ColorFromRgbFloats(0.974417, 0.903590, 0.130215),
ColorFromRgbFloats(0.983868, 0.904867, 0.136897),
ColorFromRgbFloats(0.993248, 0.906157, 0.143936)
});
}