mirror of https://github.com/status-im/qzxing.git
72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
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/*
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* FinderPattern.cpp
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* zxing
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*
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* Created by Christian Brunschen on 13/05/2008.
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* Copyright 2008 ZXing authors All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <zxing/qrcode/detector/FinderPattern.h>
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namespace zxing {
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namespace qrcode {
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using namespace std;
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FinderPattern::FinderPattern(float posX, float posY, float estimatedModuleSize) :
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ResultPoint(posX,posY), estimatedModuleSize_(estimatedModuleSize), count_(1) {
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}
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FinderPattern::FinderPattern(float posX, float posY, float estimatedModuleSize, int count) :
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ResultPoint(posX,posY), estimatedModuleSize_(estimatedModuleSize), count_(count) {
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}
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int FinderPattern::getCount() const {
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return count_;
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}
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float FinderPattern::getEstimatedModuleSize() const {
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return estimatedModuleSize_;
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}
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void FinderPattern::incrementCount() {
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count_++;
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}
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/*
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bool FinderPattern::aboutEquals(float moduleSize, float i, float j) const {
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return abs(i - posY_) <= moduleSize && abs(j - posX_) <= moduleSize && (abs(moduleSize - estimatedModuleSize_)
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<= 1.0f || abs(moduleSize - estimatedModuleSize_) / estimatedModuleSize_ <= 0.1f);
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}
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*/
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bool FinderPattern::aboutEquals(float moduleSize, float i, float j) const {
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if (abs(i - getY()) <= moduleSize && abs(j - getX()) <= moduleSize) {
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float moduleSizeDiff = abs(moduleSize - estimatedModuleSize_);
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return moduleSizeDiff <= 1.0f || moduleSizeDiff <= estimatedModuleSize_;
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}
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return false;
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}
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Ref<FinderPattern> FinderPattern::combineEstimate(float i, float j, float newModuleSize) const {
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int combinedCount = count_ + 1;
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float combinedX = (count_ * getX() + j) / combinedCount;
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float combinedY = (count_ * getY() + i) / combinedCount;
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float combinedModuleSize = (count_ * getEstimatedModuleSize() + newModuleSize) / combinedCount;
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return Ref<FinderPattern>(new FinderPattern(combinedX, combinedY, combinedModuleSize, combinedCount));
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}
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}
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}
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