Detector.h Example File

 // -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
 /*
  *  Detector.h
  *  zxing
  *
  *  Created by Lukas Stabe on 08/02/2012.
  *  Copyright 2012 ZXing authors 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.
  */

 #ifndef __ZXING_AZTEC_DETECTOR_DETECTOR_H__
 #define __ZXING_AZTEC_DETECTOR_DETECTOR_H__

 #include <vector>

 #include <zxing/common/BitArray.h>
 #include <zxing/ResultPoint.h>
 #include <zxing/common/BitMatrix.h>
 #include <zxing/DecodeHints.h>
 #include <zxing/aztec/AztecDetectorResult.h>

 namespace zxing {
 namespace aztec {

 class Point : public Counted {
  private:
   const int x;
   const int y;

  public:
   Ref<ResultPoint> toResultPoint() {
     return Ref<ResultPoint>(new ResultPoint(float(x), float(y)));
   }

   Point(int ax, int ay) : x(ax), y(ay) {}

   int getX() const { return x; }
   int getY() const { return y; }
 };

 class Detector : public Counted {

  private:
   Ref<BitMatrix> image_;

   bool compact_;
   int nbLayers_;
   int nbDataBlocks_;
   int nbCenterLayers_;
   int shift_;

   void extractParameters(std::vector<Ref<Point> > bullEyeCornerPoints);
   ArrayRef< Ref<ResultPoint> > getMatrixCornerPoints(std::vector<Ref<Point> > bullEyeCornerPoints);
   static void correctParameterData(Ref<BitArray> parameterData, bool compact);
   std::vector<Ref<Point> > getBullEyeCornerPoints(Ref<Point> pCenter);
   Ref<Point> getMatrixCenter();
   Ref<BitMatrix> sampleGrid(Ref<BitMatrix> image,
                             Ref<ResultPoint> topLeft,
                             Ref<ResultPoint> bottomLeft,
                             Ref<ResultPoint> bottomRight,
                             Ref<ResultPoint> topRight);
   void getParameters(Ref<BitArray> parameterData);
   Ref<BitArray> sampleLine(Ref<Point> p1, Ref<Point> p2, int size);
   bool isWhiteOrBlackRectangle(Ref<Point> p1,
                                Ref<Point> p2,
                                Ref<Point> p3,
                                Ref<Point> p4);
   int getColor(Ref<Point> p1, Ref<Point> p2);
   Ref<Point> getFirstDifferent(Ref<Point> init, bool color, int dx, int dy);
   bool isValid(int x, int y);
   static float distance(Ref<Point> a, Ref<Point> b);

  public:
   Detector(Ref<BitMatrix> image);
   Ref<AztecDetectorResult> detect();
 };

 }
 }

 #endif