135 lines
3.3 KiB
PHP
135 lines
3.3 KiB
PHP
<?php
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// {{{ICINGA_LICENSE_HEADER}}}
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/**
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* This file is part of Icinga 2 Web.
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*
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* Icinga 2 Web - Head for multiple monitoring backends.
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* Copyright (C) 2013 Icinga Development Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* @copyright 2013 Icinga Development Team <info@icinga.org>
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* @license http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
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* @author Icinga Development Team <info@icinga.org>
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*/
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// {{{ICINGA_LICENSE_HEADER}}}
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namespace Icinga\Chart\Unit;
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class LinearAxis implements AxisUnit {
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private $min;
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private $max;
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private $staticMin = false;
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private $staticMax = false;
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private $nrOfTicks = 10;
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private $currentTick = 0;
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private $currentValue = 0;
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public function __construct($nrOfTicks = 10) {
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$this->min = PHP_INT_MAX;
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$this->max = ~PHP_INT_MAX;
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$this->nrOfTicks = $nrOfTicks;
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}
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public function addValues(array $dataset, $idx=0)
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{
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$datapoints = array();
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foreach($dataset['data'] as $points) {
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$datapoints[] = $points[$idx];
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}
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sort($datapoints);
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if (!$this->staticMax) {
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$this->max = max($this->max, $datapoints[count($datapoints)-1]);
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}
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if (!$this->staticMin) {
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$this->min = min($this->min, $datapoints[0]);
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}
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$this->currentTick = 0;
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$this->currentValue = $this->min;
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return $this;
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}
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public function transform($value)
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{
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if ($value < $this->min) {
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return 0;
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} else if ($value > $this->max) {
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return 100;
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} else {
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return 100 * ($value - $this->min) / ($this->max - $this->min);
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}
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}
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public function current()
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{
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return $this->currentTick;
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}
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public function next()
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{
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$this->currentTick += (100 / $this->nrOfTicks);
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$this->currentValue += (($this->max - $this->min) / $this->nrOfTicks );
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}
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public function key()
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{
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return $this->currentValue;
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}
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public function valid()
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{
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return $this->currentTick >= 0 && $this->currentTick <= 100;
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}
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public function rewind()
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{
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$this->currentTick = 0;
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$this->currentValue = $this->min;
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}
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/**
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* @param int $max
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*/
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public function setMax($max)
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{
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if ($max !== null) {
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$this->max = $max;
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$this->staticMax = true;
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}
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}
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/**
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* @param int $min
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*/
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public function setMin($min)
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{
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if ($min !== null) {
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$this->min = $min;
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$this->staticMin = true;
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}
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}
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} |