Esempio n. 1
0
 /**
  * Swap color schemes, to make sure, we don't use 2 colors in a same scheme continously
  * @return array()
  */
 protected function swap_color_schemes()
 {
     if (empty(self::$cache_color_schemes)) {
         // swap colors from axis X => Y, Y => X
         $x = count($this->color_schemes[0][0]);
         $y = count($this->color_schemes[0]);
         $tmp = array();
         foreach ($this->color_schemes as $y => $colors) {
             foreach ($colors as $x => $color) {
                 $tmp[$x][$y] = $color;
             }
         }
         self::$cache_color_schemes = $tmp;
     }
     return self::$cache_color_schemes;
 }