QRFinderPattern.cpp Example File
appdemos/qtws/QZXing/zxing/zxing/qrcode/detector/QRFinderPattern.cpp
#include <zxing/qrcode/detector/FinderPattern.h>
using std::abs;
using zxing::Ref;
using zxing::qrcode::FinderPattern;
FinderPattern::FinderPattern(float posX, float posY, float estimatedModuleSize)
: ResultPoint(posX,posY), estimatedModuleSize_(estimatedModuleSize), count_(1) {}
FinderPattern::FinderPattern(float posX, float posY, float estimatedModuleSize, int count)
: ResultPoint(posX,posY), estimatedModuleSize_(estimatedModuleSize), count_(count) {}
int FinderPattern::getCount() const {
return count_;
}
float FinderPattern::getEstimatedModuleSize() const {
return estimatedModuleSize_;
}
void FinderPattern::incrementCount() {
count_++;
}
bool FinderPattern::aboutEquals(float moduleSize, float i, float j) const {
if (abs(i - getY()) <= moduleSize && abs(j - getX()) <= moduleSize) {
float moduleSizeDiff = abs(moduleSize - estimatedModuleSize_);
return moduleSizeDiff <= 1.0f || moduleSizeDiff <= estimatedModuleSize_;
}
return false;
}
Ref<FinderPattern> FinderPattern::combineEstimate(float i, float j, float newModuleSize) const {
int combinedCount = count_ + 1;
float combinedX = (count_ * getX() + j) / combinedCount;
float combinedY = (count_ * getY() + i) / combinedCount;
float combinedModuleSize = (count_ * getEstimatedModuleSize() + newModuleSize) / combinedCount;
return Ref<FinderPattern>(new FinderPattern(combinedX, combinedY, combinedModuleSize, combinedCount));
}