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<?php
/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
namespace Icinga\Chart\Unit;
use Iterator;
/**
* Base class for Axis Units
*
* An AxisUnit takes a set of values and places them on a given range
*
* Concrete subclasses must implement the iterator interface, with
* getCurrent returning the axis relative position and getValue the label
* that will be displayed
*/
interface AxisUnit extends Iterator
{
/**
* Add a dataset to this AxisUnit, required for dynamic min and max vlaues
*
* @param array $dataset The dataset that will be shown in the Axis
* @param int $id The idx in the dataset (0 for x, 1 for y)
*/
public function addValues(array $dataset, $id = 0);
/**
* Transform the given absolute value in an axis relative value
*
* @param int $value The absolute, dataset dependent value
*
* @return int An axis relative value
*/
public function transform($value);
/**
* Set the axis minimum value to a fixed value
*
* @param int $min The new minimum value
*/
public function setMin($min);
/**
* Set the axis maximum value to a fixed value
*
* @param int $max The new maximum value
*/
public function setMax($max);
/**
* Get the amount of ticks of this axis
*
* @return int
*/
public function getTicks();
}
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