pyrou/morpheus

<?php

namespace Morpheus;

include_once __DIR__.'/Region.php';

class CoordinatesIterator implements \Iterator, \Countable {

    private $x;
    private $y;
    private $rect;

    function __construct(Region $rect) {
        $this->rect = $rect;
    }

    function rewind() {
        $this->x = 0;
        $this->y = 0;
    }

    function valid() {
        return ($this->x + $this->y) >= 0;
    }

    function key() {
        return ($this->y * $this->rect->w) + $this->x;
    }

    function current() {
        return array($this->x + $this->rect->x, $this->y + $this->rect->y);
    }

    function next() {
        $this->x++;
        if($this->x >= $this->rect->w) {
            $this->x = 0;
            $this->y ++;
            if($this->y >= $this->rect->h) {
                $this->x = -1;
                $this->y = -1;
            }
        }
    }

    function count() {
        return $this->rect->w * $this->rect->h;
    }

}