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<?php |
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/** |
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* Copyright (C) 2021 Graham Breach |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (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 Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/** |
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* For more information, please contact <graham@goat1000.com> |
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*/ |
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|
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namespace Goat1000\SVGGraph; |
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|
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/** |
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* Class for logarithmic axis with specific tick marks |
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*/ |
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class AxisLogTicks extends AxisLog { |
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|
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protected $ticks; |
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|
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public function __construct($length, $max_val, $min_val, $min_unit, |
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$min_space, $fit, $units_before, $units_after, $decimal_digits, |
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$base, $divisions, $label_callback, $values, $ticks) |
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{ |
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sort($ticks); |
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$this->ticks = []; |
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|
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// only keep the ticks that are inside the axis bounds |
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foreach($ticks as $t) { |
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if($t >= $min_val && $t <= $max_val) |
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$this->ticks[] = $t; |
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} |
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|
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if(count($this->ticks) < 1) |
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throw new \Exception('No ticks in axis range'); |
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|
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parent::__construct($length, $max_val, $min_val, $min_unit, |
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$min_space, $fit, $units_before, $units_after, $decimal_digits, |
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$base, $divisions, $label_callback, $values); |
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} |
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|
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/** |
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* Returns the grid points as an array of GridPoints |
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*/ |
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public function getGridPoints($start) |
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{ |
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if($start === null) |
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return; |
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|
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$points = []; |
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foreach($this->ticks as $val) { |
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$position = $this->position($val); |
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$position = $start + ($this->direction * $position); |
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$points[] = $this->getGridPoint($position, $val); |
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} |
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|
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if($this->direction < 0) { |
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usort($points, function($a, $b) { return $b->position - $a->position; }); |
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} else { |
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usort($points, function($a, $b) { return $a->position - $b->position; }); |
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} |
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|
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return $points; |
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} |
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} |
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|
