/// <summary>
/// This HSL values in this method have been set specially for use with the high-resolution zooming spectrograms.
/// There are limits to the values that can be used.
/// The purpose for chaning the default values was to increase the colour saturation.
/// </summary>
public static CubeHelix GetCubeHelix()
{
//Hsl colorARgb = new Hsl(300, 0.5, 0.0); // DEFAULT - used prior to 26 June 2015
//Hsl colorBRgb = new Hsl(-240, 0.5, 1.0); // DEFAULT - used prior to 26 June 2015
Hsl colorARgb = new Hsl(300, 0.85f, 0.0f);
Hsl colorBRgb = new Hsl(-240, 0.5f, 1.0f);
var cch = new CubeHelix(colorARgb, colorBRgb);
cch.SetDefaultCubeHelix();
return(cch);
}
/**
* Obtained from following website.
* https://www.mrao.cam.ac.uk/~dag/CUBEHELIX/
*
* cubehelix.js#
*
* (function() {
* var radians = Math.PI / 180;
*
* d3.scale.cubehelix = function() {
* return d3.scale.linear()
* .range([d3.hsl(300, .5, 0), d3.hsl(-240, .5, 1)])
* .interpolate(d3.interpolateCubehelix);
* };
*
* d3.interpolateCubehelix = d3_interpolateCubehelix(1);
* d3.interpolateCubehelix.gamma = d3_interpolateCubehelix;
*
* function d3_interpolateCubehelix(gamma) {
* return function(a, b) {
* a = d3.hsl(a);
* b = d3.hsl(b);
*
* var ah = (a.h + 120) * radians,
* bh = (b.h + 120) * radians - ah,
* as = a.s,
* bs = b.s - as,
* al = a.l,
* bl = b.l - al;
*
* if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
* if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah;
*
* return function(t) {
* var h = ah + bh * t,
* l = Math.pow(al + bl * t, gamma),
* a = (as + bs * t) * l * (1 - l);
* return "#"
+ hex(l + a * (-0.14861 * Math.cos(h) + 1.78277 * Math.sin(h)))
+ hex(l + a * (-0.29227 * Math.cos(h) - 0.90649 * Math.sin(h)))
+ hex(l + a * (+1.97294 * Math.cos(h)));
+ };
+ };
+ }
+
+ function hex(v) {
+ var s = (v = v <= 0 ? 0 : v >= 1 ? 255 : v * 255 | 0).toString(16);
+ return v < 0x10 ? "0" + s : s;
+ }
+
*
*
*
* **/
public static void DrawTestImage()
{
//Hsl colorARgb = new Hsl(300, 0.5, 0.0);
//Hsl colorBRgb = new Hsl(-240, 0.5, 1.0);
Hsl colorARgb = new Hsl(300, 0.5f, 0.0f);
Hsl colorBRgb = new Hsl(-240, 0.5f, 1.0f);
var cch = new CubeHelix(colorARgb, colorBRgb);
cch.SetDefaultCubeHelix();
string path = @"C:\SensorNetworks\Output\FalseColourSpectrograms\SpectrogramZoom\ZoomImages\testImage.png";
cch.TestImage(path);
}
/// <summary>
/// This HSL values in this method have been set specially for use with the high-resolution zooming spectrograms.
/// There are limits to the values that can be used.
/// The purpose for chaning the default values was to increase the colour saturation.
/// </summary>
/// <returns></returns>
public static CubeHelix GetCubeHelix()
{
//Hsl colorARgb = new Hsl(300, 0.5, 0.0); // DEFAULT - used prior to 26 June 2015
//Hsl colorBRgb = new Hsl(-240, 0.5, 1.0); // DEFAULT - used prior to 26 June 2015
Hsl colorARgb = new Hsl();
colorARgb.H = 300;
colorARgb.S = 0.85;
colorARgb.L = 0.1;
Hsl colorBRgb = new Hsl();
//colorBRgb.H = -240;
colorBRgb.H = -240;
colorBRgb.S = 0.5;
colorBRgb.L = 1.0;
var cch = new CubeHelix(colorARgb, colorBRgb);
cch.SetDefaultCubeHelix();
return(cch);
}
