first commit

2025-11-28 10:08:12 +08:00
commit 09a14bf0a3
1088 changed files with 145132 additions and 0 deletions
@@ -0,0 +1,65 @@
+<?php
+/*
+ * Copyright 2007 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace Zxing\Qrcode\Detector;
+
+use Zxing\ResultPoint;
+
+/**
+ * <p>Encapsulates an alignment pattern, which are the smaller square patterns found in
+ * all but the simplest QR Codes.</p>
+ *
+ * @author Sean Owen
+ */
+final class AlignmentPattern extends ResultPoint
+{
+    private $estimatedModuleSize;
+
+    public function __construct($posX, $posY, $estimatedModuleSize)
+    {
+        parent::__construct($posX, $posY);
+        $this->estimatedModuleSize = $estimatedModuleSize;
+    }
+
+    /**
+     * <p>Determines if this alignment pattern "about equals" an alignment pattern at the stated
+     * position and size -- meaning, it is at nearly the same center with nearly the same size.</p>
+     */
+    public function aboutEquals($moduleSize, $i, $j)
+    {
+        if (abs($i - $this->getY()) <= $moduleSize && abs($j - $this->getX()) <= $moduleSize) {
+            $moduleSizeDiff = abs($moduleSize - $this->estimatedModuleSize);
+
+            return $moduleSizeDiff <= 1.0 || $moduleSizeDiff <= $this->estimatedModuleSize;
+        }
+
+        return false;
+    }
+
+    /**
+     * Combines this object's current estimate of a finder pattern position and module size
+     * with a new estimate. It returns a new {@code FinderPattern} containing an average of the two.
+     */
+    public function combineEstimate($i, $j, $newModuleSize)
+    {
+        $combinedX          = ($this->getX() + $j) / 2.0;
+        $combinedY          = ($this->getY() + $i) / 2.0;
+        $combinedModuleSize = ($this->estimatedModuleSize + $newModuleSize) / 2.0;
+
+        return new AlignmentPattern($combinedX, $combinedY, $combinedModuleSize);
+    }
+}