I want set of totally distinct shades of QCOlor around 64

Qt Enthusiast

what algortimhs generates this

mrjj

@Qt-Enthusiast
I think its a dictionary.
Make a small test program. there is also a table of hex values to use. ~~sample the color from the bitmap. (same offset so not so complex)~~
Then alter properties (QColor) to fine tune.
http://godsnotwheregodsnot.blogspot.dk/2013/11/kmeans-color-quantization-seeding.html
Kmeans++ Color Quantization seeding it seems :)
From
https://graphicdesign.stackexchange.com/questions/3682/where-can-i-find-a-large-palette-set-of-contrasting-colors-for-coloring-many-d

mrjj

Hi
Using his table, and some ligher() and darker() calls then they seems pretty distinct ;)

alt text

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QPainter>

MainWindow::MainWindow(QWidget* parent) :
  QMainWindow(parent),
  ui(new Ui::MainWindow) {
  ui->setupUi(this);
}

MainWindow::~MainWindow() {
  delete ui;
}

const char* indexcolors[] = {
  "#000000", "#FFFF00", "#1CE6FF", "#FF34FF", "#FF4A46", "#008941", "#006FA6", "#A30059",
  "#FFDBE5", "#7A4900", "#0000A6", "#63FFAC", "#B79762", "#004D43", "#8FB0FF", "#997D87",
  "#5A0007", "#809693", "#FEFFE6", "#1B4400", "#4FC601", "#3B5DFF", "#4A3B53", "#FF2F80",
  "#61615A", "#BA0900", "#6B7900", "#00C2A0", "#FFAA92", "#FF90C9", "#B903AA", "#D16100",
  "#DDEFFF", "#000035", "#7B4F4B", "#A1C299", "#300018", "#0AA6D8", "#013349", "#00846F",
  "#372101", "#FFB500", "#C2FFED", "#A079BF", "#CC0744", "#C0B9B2", "#C2FF99", "#001E09",
  "#00489C", "#6F0062", "#0CBD66", "#EEC3FF", "#456D75", "#B77B68", "#7A87A1", "#788D66",
  "#885578", "#FAD09F", "#FF8A9A", "#D157A0", "#BEC459", "#456648", "#0086ED", "#886F4C",

  "#34362D", "#B4A8BD", "#00A6AA", "#452C2C", "#636375", "#A3C8C9", "#FF913F", "#938A81",
  "#575329", "#00FECF", "#B05B6F", "#8CD0FF", "#3B9700", "#04F757", "#C8A1A1", "#1E6E00",
  "#7900D7", "#A77500", "#6367A9", "#A05837", "#6B002C", "#772600", "#D790FF", "#9B9700",
  "#549E79", "#FFF69F", "#201625", "#72418F", "#BC23FF", "#99ADC0", "#3A2465", "#922329",
  "#5B4534", "#FDE8DC", "#404E55", "#0089A3", "#CB7E98", "#A4E804", "#324E72", "#6A3A4C",
  "#83AB58", "#001C1E", "#D1F7CE", "#004B28", "#C8D0F6", "#A3A489", "#806C66", "#222800",
  "#BF5650", "#E83000", "#66796D", "#DA007C", "#FF1A59", "#8ADBB4", "#1E0200", "#5B4E51",
  "#C895C5", "#320033", "#FF6832", "#66E1D3", "#CFCDAC", "#D0AC94", "#7ED379", "#012C58",

  "#7A7BFF", "#D68E01", "#353339", "#78AFA1", "#FEB2C6", "#75797C", "#837393", "#943A4D",
  "#B5F4FF", "#D2DCD5", "#9556BD", "#6A714A", "#001325", "#02525F", "#0AA3F7", "#E98176",
  "#DBD5DD", "#5EBCD1", "#3D4F44", "#7E6405", "#02684E", "#962B75", "#8D8546", "#9695C5",
  "#E773CE", "#D86A78", "#3E89BE", "#CA834E", "#518A87", "#5B113C", "#55813B", "#E704C4",
  "#00005F", "#A97399", "#4B8160", "#59738A", "#FF5DA7", "#F7C9BF", "#643127", "#513A01",
  "#6B94AA", "#51A058", "#A45B02", "#1D1702", "#E20027", "#E7AB63", "#4C6001", "#9C6966",
  "#64547B", "#97979E", "#006A66", "#391406", "#F4D749", "#0045D2", "#006C31", "#DDB6D0",
  "#7C6571", "#9FB2A4", "#00D891", "#15A08A", "#BC65E9", "#FFFFFE", "#C6DC99", "#203B3C",

  "#671190", "#6B3A64", "#F5E1FF", "#FFA0F2", "#CCAA35", "#374527", "#8BB400", "#797868",
  "#C6005A", "#3B000A", "#C86240", "#29607C", "#402334", "#7D5A44", "#CCB87C", "#B88183",
  "#AA5199", "#B5D6C3", "#A38469", "#9F94F0", "#A74571", "#B894A6", "#71BB8C", "#00B433",
  "#789EC9", "#6D80BA", "#953F00", "#5EFF03", "#E4FFFC", "#1BE177", "#BCB1E5", "#76912F",
  "#003109", "#0060CD", "#D20096", "#895563", "#29201D", "#5B3213", "#A76F42", "#89412E",
  "#1A3A2A", "#494B5A", "#A88C85", "#F4ABAA", "#A3F3AB", "#00C6C8", "#EA8B66", "#958A9F",
  "#BDC9D2", "#9FA064", "#BE4700", "#658188", "#83A485", "#453C23", "#47675D", "#3A3F00",
  "#061203", "#DFFB71", "#868E7E", "#98D058", "#6C8F7D", "#D7BFC2", "#3C3E6E", "#D83D66",

  "#2F5D9B", "#6C5E46", "#D25B88", "#5B656C", "#00B57F", "#545C46", "#866097", "#365D25",
  "#252F99", "#00CCFF", "#674E60", "#FC009C", "#92896B"
};


void MainWindow::on_pbGo_released() {
  const int tilesize = 32;
  const int mapsize = tilesize * 25 ;
  QPixmap pix(QSize(mapsize, mapsize));
  QPainter Painter;

  int maxCol = sizeof(indexcolors) / sizeof(indexcolors[0]);
  int cCol = 0;
  Painter.begin(&pix);

  Painter.setPen(QPen(QBrush(Qt::black), 1, Qt::SolidLine));
  int maxX = mapsize / tilesize;
  int dark = 0;

  for (int y = 0; y < maxX; ++y) {
    for (int x = 0; x < maxX; ++x) {
      QColor col(indexcolors[cCol]);
      if (cCol < maxCol) cCol++;
      else {
        cCol = 0;
        dark++;
      }

      if(dark == 1)
        col = col.darker();
      if(dark == 2)
        col = col.lighter();

      Painter.setBrush(QBrush(col) );
      Painter.drawRect((x * tilesize), (y * tilesize), tilesize, tilesize);
    }
  }   
  Painter.end();
 ui->labPic->setPixmap(pix);
}

Qt Enthusiast

Can we generate the table with algorithm ?

mrjj

@Qt-Enthusiast

Hi.
I thinks it s made using color distance algorithm already.
If you mean algorithm to generate all the colors out of nothing, then no.

Qt Enthusiast

Algorithm means code

mrjj

@Qt-Enthusiast

the colors are already code. ?

Qt Enthusiast

Means a pseudo code that generates this table

mrjj

@Qt-Enthusiast
Nope. Not that i have seen.