ZXing iPhone Client: first partially functional version

Core/Src/qrcode/detector/FinderPattern.h

+#ifndef __FINDER_PATTERN_H__
+#define __FINDER_PATTERN_H__
+
+/*
+ *  FinderPattern.h
+ *  zxing
+ *
+ *  Created by Christian Brunschen on 13/05/2008.
+ *  Copyright 2008 Google Inc. All rights reserved.
+ *
+ * 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.
+ */
+
+#include "../../ResultPoint.h"
+#include <cmath>
+
+namespace qrcode {
+  namespace detector {
+    using namespace std;
+    using namespace common;
+····
+    class FinderPattern : public ResultPoint {
+    private:
+      float posX_;
+      float posY_;
+      float estimatedModuleSize_;
+      int count_;
+······
+    public:
+      FinderPattern(float posX, float posY, float estimatedModuleSize) :
+      posX_(posX), posY_(posY), estimatedModuleSize_(estimatedModuleSize),
+      count_(1) { }
+      float getX() { return posX_; }
+      float getY() { return posY_; }
+      int getCount() { return count_; }
+      float getEstimatedModuleSize() { return estimatedModuleSize_; }
+      void incrementCount() { count_++; }
+      bool aboutEquals(float moduleSize, float i, float j) {
+        return
+        abs(i - posY_) <= moduleSize &&
+        abs(j - posX_) <= moduleSize &&
+        (abs(moduleSize - estimatedModuleSize_) <= 1.0f ||
+         abs(moduleSize - estimatedModuleSize_) / estimatedModuleSize_ <= 0.1f);
+      }
+    };
+  }
+}
+
+#endif // __FINDER_PATTERN_H__