cpp/core/src/zxing/qrcode/detector/FinderPattern.cpp

   1 /*
   2  *  FinderPattern.cpp
   3  *  zxing
   4  *
   5  *  Created by Christian Brunschen on 13/05/2008.
   6  *  Copyright 2008 ZXing authors All rights reserved.
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  */
  20
  21 #include <zxing/qrcode/detector/FinderPattern.h>
  22
  23 namespace zxing {
  24         namespace qrcode {
  25
  26                 using namespace std;
  27
  28                 FinderPattern::FinderPattern(float posX, float posY, float estimatedModuleSize) :
  29                 posX_(posX), posY_(posY), estimatedModuleSize_(estimatedModuleSize), counter_(1) {
  30                 }
  31
  32                 float FinderPattern::getX() const {
  33                         return posX_;
  34                 }
  35
  36                 float FinderPattern::getY() const {
  37                         return posY_;
  38                 }
  39
  40                 int FinderPattern::getCount() const {
  41                         return counter_;
  42                 }
  43
  44                 float FinderPattern::getEstimatedModuleSize() const {
  45                         return estimatedModuleSize_;
  46                 }
  47
  48                 void FinderPattern::incrementCount() {
  49                         counter_++;
  50                 }
  51
  52                 bool FinderPattern::aboutEquals(float moduleSize, float i, float j) const {
  53                         return abs(i - posY_) <= moduleSize && abs(j - posX_) <= moduleSize && (abs(moduleSize - estimatedModuleSize_)
  54                                                                                                                                                                         <= 1.0f || abs(moduleSize - estimatedModuleSize_) / estimatedModuleSize_ <= 0.1f);
  55                 }
  56
  57         }
  58 }