118             $cloud = $this->_getTagCloud($options['max'], $min, $max, $tag);
121             $cloud = $this->_getNamespaceCloud($options['max'], $min, $max);
124             $cloud = $this->_getWordCloud($options['max'], $min, $max);
128         $delta = ($max-$min)/16;
132             if ($size < $min+round($delta)) $class = 'cloud1';
133             elseif ($size < $min+round(2*$delta)) $class = 'cloud2';
134             elseif ($size < $min+round(4*$delta)) $class = 'cloud3';
135             elseif ($size < $min+round(8*$delta)) $class = 'cloud4';
171             $fsize = 8 + round(($size-$min)/$delta);
180     function _getNamespaceCloud($num, &$min, &$max) {  argument
191         return $this->_sortCloud($cloud, $num, $min, $max);
198     function _getWordCloud($num, &$min, &$max) {  argument
230         return $this->_sortCloud($cloud, $num, $min, $max);
255     function _getTagCloud($num, &$min, &$max, &$tag) {  argument
257         return $this->_sortCloud($cloud, $num, $min, $max);
264     function _sortCloud($cloud, $num, &$min, &$max) {  argument
271         $min = end($cloud[0]);