port alignment pattern

src/qrcode/detector/AlignmentPattern.java

@@ -1,59 +0,0 @@
-/*
- * 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.
- */
-
-package com.google.zxing.qrcode.detector;
-
-import com.google.zxing.RXingResultPoint;
-
-/**
- * <p>Encapsulates an alignment pattern, which are the smaller square patterns found in
- * all but the simplest QR Codes.</p>
- *
- * @author Sean Owen
- */
-public final class AlignmentPattern extends RXingResultPoint {
-
-  private final float estimatedModuleSize;
-
-  AlignmentPattern(float posX, float posY, float estimatedModuleSize) {
-    super(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>
-   */
-  boolean aboutEquals(float moduleSize, float i, float j) {
-    if (Math.abs(i - getY()) <= moduleSize && Math.abs(j - getX()) <= moduleSize) {
-      float moduleSizeDiff = Math.abs(moduleSize - estimatedModuleSize);
-      return moduleSizeDiff <= 1.0f || moduleSizeDiff <= 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.
-   */
-  AlignmentPattern combineEstimate(float i, float j, float newModuleSize) {
-    float combinedX = (getX() + j) / 2.0f;
-    float combinedY = (getY() + i) / 2.0f;
-    float combinedModuleSize = (estimatedModuleSize + newModuleSize) / 2.0f;
-    return new AlignmentPattern(combinedX, combinedY, combinedModuleSize);
-  }
-
-}

src/qrcode/detector/alignment_pattern.rs

@@ -0,0 +1,64 @@
+/*
+ * 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.
+ */
+
+//RXingResultPoint
+
+use crate::RXingResultPoint;
+
+/**
+ * <p>Encapsulates an alignment pattern, which are the smaller square patterns found in
+ * all but the simplest QR Codes.</p>
+ *
+ * @author Sean Owen
+ */
+pub struct AlignmentPattern {
+    estimatedModuleSize: f32,
+    internal_result_point: RXingResultPoint,
+}
+
+impl AlignmentPattern {
+    pub fn new(posX: f32, posY: f32, estimatedModuleSize: f32) -> Self {
+        Self {
+            estimatedModuleSize,
+            internal_result_point: RXingResultPoint { x: posX, y: posY },
+        }
+    }
+
+    /**
+     * <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>
+     */
+    pub fn aboutEquals(&self, moduleSize: f32, i: f32, j: f32) -> bool {
+        if (i - self.internal_result_point.getY()).abs() <= moduleSize
+            && (j - self.internal_result_point.getX()).abs() <= moduleSize
+        {
+            let moduleSizeDiff = (moduleSize - self.estimatedModuleSize).abs();
+            return moduleSizeDiff <= 1.0 || moduleSizeDiff <= self.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.
+     */
+    pub fn combineEstimate(&self, i: f32, j: f32, newModuleSize: f32) -> AlignmentPattern {
+        let combinedX = (self.internal_result_point.getX() + j) / 2.0;
+        let combinedY = (self.internal_result_point.getY() + i) / 2.0;
+        let combinedModuleSize = (self.estimatedModuleSize + newModuleSize) / 2.0;
+        AlignmentPattern::new(combinedX, combinedY, combinedModuleSize)
+    }
+}

src/qrcode/detector/finder_pattern_info.rs

@@ -30,10 +30,11 @@ pub struct FinderPatternInfo {
 
 impl FinderPatternInfo {
     pub fn new(patternCenters: [FinderPattern; 3]) -> Self {
+        let [a, b, c] = patternCenters;
         Self {
-            bottomLeft: patternCenters[0],
+            bottomLeft: a,
-            topLeft: patternCenters[1],
+            topLeft: b,
-            topRight: patternCenters[2],
+            topRight: c,
         }
     }
 

src/qrcode/detector/mod.rs

@@ -1,5 +1,7 @@
 mod finder_pattern_info;
 mod finder_pattern;
+mod alignment_pattern;
 
 pub use finder_pattern_info::*;
 pub use finder_pattern::*;
+pub use alignment_pattern::*;