<?php

use codeagent\treemap\Treemap;

use codeagent\treemap\presenter\ImagePresenter;

use codeagent\treemap\presenter\NodeInfo;

use codeagent\treemap\Gradient;

// ---

// --- Local fonctions

// ---

function rgb2hex($rgb) {

   $hex = "#";

   $hex .= str_pad(dechex($rgb[0]), 2, "0", STR_PAD_LEFT);

   $hex .= str_pad(dechex($rgb[1]), 2, "0", STR_PAD_LEFT);

   $hex .= str_pad(dechex($rgb[2]), 2, "0", STR_PAD_LEFT);

   return $hex; // returns the hex value including the number sign (#)

}

function hex2rgb($color){

    $color = str_replace('#', '', $color);

    if (strlen($color) != 6){ return array(0,0,0); }

    $rgb = array();

    for ($x=0;$x<3;$x++){

        $rgb[$x] = hexdec(substr($color,(2*$x),2));

    }

    return $rgb;

}

class topisto_treemap

{

  private static function getRGB($methode, $gradient, $factor)

  {

    switch($methode)

    {

      case 0:

        $rgb = [rand(0,255),rand(0,255),rand(0,255)];

        break;

      case 1:

        $rgb = [80,80,80];

        break;

      case 2:

        $factor=rand(0,100);

        $rgb = [255,255,255];

        if ($factor < 50 ) $rgb = [255,0,0];

        if ($factor < 25 ) $rgb = [0,0,255];

        if ($factor < 10 ) $rgb = [255,255,0];

        break;

      case 3:

        $rgb  = hex2rgb($gradient[1]->color($factor));

        break;

      case 4:

        $rgb  = hex2rgb($gradient[2]->color($factor));

        break;

      case 999:

        $rgb  = hex2rgb($gradient[3]->color($factor));

        break;

      default:  

        $rgb  = hex2rgb($gradient[0]->color($factor));

    }

    return $rgb;

  }

  public static function DrawBlock($the_block, $vImage, $x, $y, $width, $height, $methode, $type=1)

  {

    $full_area = $width * $height;

    if ($full_area == 0) $full_area = 1;

    $data = blockchain::getTransactionData($the_block, $type);

    $vBgColor = imagecolorallocate($vImage, 10, 10, 10);

    imagefilledrectangle($vImage, $x, $y, $x+$width, $y+$height, $vBgColor);

    // quelques gradient de couleurs ...

    $rgb1 = [rand(0,255),rand(0,255),rand(0,255)];

    $rgb2 = [rand(0,255),rand(0,255),rand(0,255)];

    $gradient   = [];

    $gradient[] = new Gradient(['0.0' => '#f75557', '0.5' => '#646a82', '1.0' => '#5ad87b']);

    $gradient[] = new Gradient(['0.0' => '#FF69B4', '1.0' => '#FF5555']);

    $gradient[] = new Gradient(['0.0' => rgb2hex($rgb1), '1.0' => rgb2hex($rgb2)]);

    $gradient[] = new Gradient(['0.0' => '#FFFFFF', '1.0' => '#000000']);

    if ($type == 4)

    {

      // Cas particulier pour la récompense

      $reward = 0;

      foreach($data as $v) $reward += $v['value'];

      $pct = $reward / 5000000000.0;

      $w  = round($width * $pct);

      $h  = round($height * $pct);

      $x1 = $x + (($width/2) - ($w /2));

      $y1 = $y + (($height/2) - ($h /2));

      $rgb = self::getRGB($methode, $gradient, $pct*100);

      $vFgColor = imagecolorallocate($vImage, $rgb[0], $rgb[1], $rgb[2]);

      $rgb = self::getRGB(999, $gradient, $pct*100);

      $vBgColor = imagecolorallocate($vImage, $rgb[0], $rgb[1], $rgb[2]);

      if (($h < 2)&&($w< 2))

      {

        imagesetpixel($vImage, $x1, $y1, $vFgColor);

      } else {

       $x2 = $x1 + $w;

       $y2 = $y1 + $h;

       imagefilledrectangle($vImage, $x1, $y1, $x2, $y2, $vFgColor);

       imagerectangle($vImage, $x1, $y1, $x2, $y2, $vBgColor);

      }

    } else {

      $treemap = new Treemap($data, $width, $height);

      $map = $treemap->getMap();

      $m = count($map);

      $flag_contour = true;

      for($mm = 0; $mm < $m; $mm++)

      {

        $tx     = $map[$mm];

        $factor = (($tx['_rectangle']->width * $tx['_rectangle']->height) / $full_area)*100.0;

        $x1 = $x + $tx['_rectangle']->left;

        $y1 = $y + $tx['_rectangle']->top;

        // if (($x1 == ($x+$width))||($x1 == ($y+$height))) break;

        $rgb = self::getRGB($methode, $gradient, $factor);

        // Pas de noir absolu

        if (($rgb[0]+$rgb[1]+$rgb[2]) == 0)

          $vFgColor = imagecolorallocate($vImage, 10, 10, 10);

        else

          $vFgColor = imagecolorallocate($vImage, $rgb[0], $rgb[1], $rgb[2]);

        $rgb = self::getRGB(999, $gradient, $factor);

        $vBgColor = imagecolorallocate($vImage, $rgb[0], $rgb[1], $rgb[2]);

        $x2 = $x1 + $tx['_rectangle']->width;

        $y2 = $y1 + $tx['_rectangle']->height;

        if ($x1 > ($x+$width))  $x1 = ($x+$width);

        if ($y1 > ($y+$height)) $y1 = ($y+$height);

        if ($x2 > ($x+$width))  $x2 = ($x+$width);

        if ($y2 > ($y+$height)) $y2 = ($y+$height);

        imagefilledrectangle($vImage, $x1, $y1, $x2, $y2, $vFgColor);

        if ((($x2-$x1) > 2)||(($y2-$y1) > 2)) 

          imagerectangle($vImage, $x1, $y1, $x2, $y2, $vBgColor);

      }

    }

  }

}

?>