src/applications/lipsum/image/PhabricatorLipsumArtist.php

   1 <?php
   2
   3 abstract class PhabricatorLipsumArtist extends Phobject {
   4
   5   protected function getHSBColor($h, $s, $b) {
   6     if ($s == 0) {
   7       $cr = $b;
   8       $cg = $b;
   9       $cb = $b;
  10     } else {
  11       $h /= 60;
  12       $i = (int)$h;
  13       $f = $h - $i;
  14       $p = $b * (1 - $s);
  15       $q = $b * (1 - $s * $f);
  16       $t = $b * (1 - $s * (1 - $f));
  17       switch ($i) {
  18         case 0:
  19           $cr = $b;
  20           $cg = $t;
  21           $cb = $p;
  22           break;
  23         case 1:
  24           $cr = $q;
  25           $cg = $b;
  26           $cb = $p;
  27           break;
  28         case 2:
  29           $cr = $p;
  30           $cg = $b;
  31           $cb = $t;
  32           break;
  33         case 3:
  34           $cr = $p;
  35           $cg = $q;
  36           $cb = $b;
  37           break;
  38         case 4:
  39           $cr = $t;
  40           $cg = $p;
  41           $cb = $b;
  42           break;
  43         default:
  44           $cr = $b;
  45           $cg = $p;
  46           $cb = $q;
  47           break;
  48       }
  49     }
  50
  51     $cr = (int)round($cr * 255);
  52     $cg = (int)round($cg * 255);
  53     $cb = (int)round($cb * 255);
  54
  55     return ($cr << 16) + ($cg << 8) + $cb;
  56   }
  57
  58   public function generate($x, $y) {
  59     $image = imagecreatetruecolor($x, $y);
  60     $this->draw($image, $x, $y);
  61     return PhabricatorImageTransformer::saveImageDataInAnyFormat(
  62       $image,
  63       'image/jpeg');
  64   }
  65
  66   abstract protected function draw($image, $x, $y);
  67
  68 }