init commit

addons/qrcode/library/BaconQrCode/Renderer/Module/EdgeIterator/Edge.php

@@ -0,0 +1,100 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Module\EdgeIterator;
+
+final class Edge
+{
+    /**
+     * @var bool
+     */
+    private $positive;
+
+    /**
+     * @var array<int[]>
+     */
+    private $points = [];
+
+    /**
+     * @var array<int[]>|null
+     */
+    private $simplifiedPoints;
+
+    /**
+     * @var int
+     */
+    private $minX = PHP_INT_MAX;
+
+    /**
+     * @var int
+     */
+    private $minY = PHP_INT_MAX;
+
+    /**
+     * @var int
+     */
+    private $maxX = -1;
+
+    /**
+     * @var int
+     */
+    private $maxY = -1;
+
+    public function __construct(bool $positive)
+    {
+        $this->positive = $positive;
+    }
+
+    public function addPoint(int $x, int $y) : void
+    {
+        $this->points[] = [$x, $y];
+        $this->minX = min($this->minX, $x);
+        $this->minY = min($this->minY, $y);
+        $this->maxX = max($this->maxX, $x);
+        $this->maxY = max($this->maxY, $y);
+    }
+
+    public function isPositive() : bool
+    {
+        return $this->positive;
+    }
+
+    /**
+     * @return array<int[]>
+     */
+    public function getPoints() : array
+    {
+        return $this->points;
+    }
+
+    public function getMaxX() : int
+    {
+        return $this->maxX;
+    }
+
+    public function getSimplifiedPoints() : array
+    {
+        if (null !== $this->simplifiedPoints) {
+            return $this->simplifiedPoints;
+        }
+
+        $points = [];
+        $length = count($this->points);
+
+        for ($i = 0; $i < $length; ++$i) {
+            $previousPoint = $this->points[(0 === $i ? $length : $i) - 1];
+            $nextPoint = $this->points[($length - 1 === $i ? -1 : $i) + 1];
+            $currentPoint = $this->points[$i];
+
+            if (($previousPoint[0] === $currentPoint[0] && $currentPoint[0] === $nextPoint[0])
+                || ($previousPoint[1] === $currentPoint[1] && $currentPoint[1] === $nextPoint[1])
+            ) {
+                continue;
+            }
+
+            $points[] = $currentPoint;
+        }
+
+        return $this->simplifiedPoints = $points;
+    }
+}