From 99ffdb0b9b488d743331646dc410f26b71e1f037 Mon Sep 17 00:00:00 2001 From: Tom Sepez Date: Tue, 26 Jan 2016 14:51:21 -0800 Subject: Fix DOS newlines R=thestig@chromium.org Review URL: https://codereview.chromium.org/1636873004 . --- xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp | 554 ++++++++++++++--------------- 1 file changed, 277 insertions(+), 277 deletions(-) (limited to 'xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp') diff --git a/xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp b/xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp index 2280e9a4b8..44bbce3aab 100644 --- a/xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp +++ b/xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp @@ -1,277 +1,277 @@ -// Copyright 2014 PDFium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com -// Original code is licensed as follows: -/* - * Copyright 2007 ZXing authors - * - * 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 - -#include "xfa/src/fxbarcode/barcode.h" -#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h" -#include "xfa/src/fxbarcode/BC_ResultPoint.h" -#include "BC_QRFinderPattern.h" -#include "BC_QRCoderVersion.h" -#include "BC_FinderPatternInfo.h" -#include "BC_QRGridSampler.h" -#include "BC_QRAlignmentPatternFinder.h" -#include "BC_QRFinderPatternFinder.h" -#include "BC_QRDetectorResult.h" -#include "BC_QRDetector.h" -CBC_QRDetector::CBC_QRDetector(CBC_CommonBitMatrix* image) : m_image(image) {} -CBC_QRDetector::~CBC_QRDetector() {} -CBC_QRDetectorResult* CBC_QRDetector::Detect(int32_t hints, int32_t& e) { - CBC_QRFinderPatternFinder finder(m_image); - CBC_QRFinderPatternInfo* qpi = finder.Find(hints, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr info(qpi); - CBC_QRDetectorResult* qdr = ProcessFinderPatternInfo(info.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return qdr; -} -CBC_QRDetectorResult* CBC_QRDetector::ProcessFinderPatternInfo( - CBC_QRFinderPatternInfo* info, - int32_t& e) { - CBC_AutoPtr topLeft(info->GetTopLeft()); - CBC_AutoPtr topRight(info->GetTopRight()); - CBC_AutoPtr bottomLeft(info->GetBottomLeft()); - FX_FLOAT moduleSize = - CalculateModuleSize(topLeft.get(), topRight.get(), bottomLeft.get()); - if (moduleSize < 1.0f) { - e = BCExceptionRead; - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - int32_t dimension = ComputeDimension(topLeft.get(), topRight.get(), - bottomLeft.get(), moduleSize, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_QRCoderVersion* provisionalVersion = - CBC_QRCoderVersion::GetProvisionalVersionForDimension(dimension, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - int32_t modulesBetweenFPCenters = - provisionalVersion->GetDimensionForVersion() - 7; - CBC_QRAlignmentPattern* alignmentPattern = NULL; - if (provisionalVersion->GetAlignmentPatternCenters()->GetSize() > 0) { - FX_FLOAT bottomRightX = - topRight->GetX() - topLeft->GetX() + bottomLeft->GetX(); - FX_FLOAT bottomRightY = - topRight->GetY() - topLeft->GetY() + bottomLeft->GetY(); - FX_FLOAT correctionToTopLeft = - 1.0f - 3.0f / (FX_FLOAT)modulesBetweenFPCenters; - FX_FLOAT xtemp = (topLeft->GetX() + - correctionToTopLeft * (bottomRightX - topLeft->GetX())); - int32_t estAlignmentX = (int32_t)xtemp; - FX_FLOAT ytemp = (topLeft->GetY() + - correctionToTopLeft * (bottomRightY - topLeft->GetY())); - int32_t estAlignmentY = (int32_t)ytemp; - for (int32_t i = 4; i <= 16; i <<= 1) { - CBC_QRAlignmentPattern* temp = FindAlignmentInRegion( - moduleSize, estAlignmentX, estAlignmentY, (FX_FLOAT)i, e); - alignmentPattern = temp; - break; - } - } - CBC_CommonBitMatrix* bits = - SampleGrid(m_image, topLeft.get(), topRight.get(), bottomLeft.get(), - (CBC_ResultPoint*)(alignmentPattern), dimension, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CFX_PtrArray* points = new CFX_PtrArray; - if (alignmentPattern == NULL) { - points->Add(bottomLeft.release()); - points->Add(topLeft.release()); - points->Add(topRight.release()); - } else { - points->Add(bottomLeft.release()); - points->Add(topLeft.release()); - points->Add(topRight.release()); - points->Add(alignmentPattern); - } - return new CBC_QRDetectorResult(bits, points); -} -CBC_CommonBitMatrix* CBC_QRDetector::SampleGrid( - CBC_CommonBitMatrix* image, - CBC_ResultPoint* topLeft, - CBC_ResultPoint* topRight, - CBC_ResultPoint* bottomLeft, - CBC_ResultPoint* alignmentPattern, - int32_t dimension, - int32_t& e) { - FX_FLOAT dimMinusThree = (FX_FLOAT)dimension - 3.5f; - FX_FLOAT bottomRightX; - FX_FLOAT bottomRightY; - FX_FLOAT sourceBottomRightX; - FX_FLOAT sourceBottomRightY; - if (alignmentPattern != NULL) { - bottomRightX = alignmentPattern->GetX(); - bottomRightY = alignmentPattern->GetY(); - sourceBottomRightX = sourceBottomRightY = dimMinusThree - 3.0f; - } else { - bottomRightX = (topRight->GetX() - topLeft->GetX()) + bottomLeft->GetX(); - bottomRightY = (topRight->GetY() - topLeft->GetY()) + bottomLeft->GetY(); - sourceBottomRightX = sourceBottomRightY = dimMinusThree; - } - CBC_QRGridSampler& sampler = CBC_QRGridSampler::GetInstance(); - CBC_CommonBitMatrix* cbm = sampler.SampleGrid( - image, dimension, dimension, 3.5f, 3.5f, dimMinusThree, 3.5f, - sourceBottomRightX, sourceBottomRightY, 3.5f, dimMinusThree, - topLeft->GetX(), topLeft->GetY(), topRight->GetX(), topRight->GetY(), - bottomRightX, bottomRightY, bottomLeft->GetX(), bottomLeft->GetY(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return cbm; -} -int32_t CBC_QRDetector::ComputeDimension(CBC_ResultPoint* topLeft, - CBC_ResultPoint* topRight, - CBC_ResultPoint* bottomLeft, - FX_FLOAT moduleSize, - int32_t& e) { - int32_t tltrCentersDimension = Round( - CBC_QRFinderPatternFinder::Distance(topLeft, topRight) / moduleSize); - int32_t tlblCentersDimension = Round( - CBC_QRFinderPatternFinder::Distance(topLeft, bottomLeft) / moduleSize); - int32_t dimension = ((tltrCentersDimension + tlblCentersDimension) >> 1) + 7; - switch (dimension & 0x03) { - case 0: - dimension++; - break; - case 2: - dimension--; - break; - case 3: { - e = BCExceptionRead; - BC_EXCEPTION_CHECK_ReturnValue(e, 0); - } - } - return dimension; -} -FX_FLOAT CBC_QRDetector::CalculateModuleSize(CBC_ResultPoint* topLeft, - CBC_ResultPoint* topRight, - CBC_ResultPoint* bottomLeft) { - return (CalculateModuleSizeOneWay(topLeft, topRight) + - CalculateModuleSizeOneWay(topLeft, bottomLeft)) / - 2.0f; -} -FX_FLOAT CBC_QRDetector::CalculateModuleSizeOneWay( - CBC_ResultPoint* pattern, - CBC_ResultPoint* otherPattern) { - FX_FLOAT moduleSizeEst1 = SizeOfBlackWhiteBlackRunBothWays( - (int32_t)pattern->GetX(), (int32_t)pattern->GetY(), - (int32_t)otherPattern->GetX(), (int32_t)otherPattern->GetY()); - FX_FLOAT moduleSizeEst2 = SizeOfBlackWhiteBlackRunBothWays( - (int32_t)otherPattern->GetX(), (int32_t)otherPattern->GetY(), - (int32_t)pattern->GetX(), (int32_t)pattern->GetY()); - if (FXSYS_isnan(moduleSizeEst1)) { - return moduleSizeEst2; - } - if (FXSYS_isnan(moduleSizeEst2)) { - return moduleSizeEst1; - } - return (moduleSizeEst1 + moduleSizeEst2) / 14.0f; -} -int32_t CBC_QRDetector::Round(FX_FLOAT d) { - return (int32_t)(d + 0.5f); -} -FX_FLOAT CBC_QRDetector::SizeOfBlackWhiteBlackRunBothWays(int32_t fromX, - int32_t fromY, - int32_t toX, - int32_t toY) { - FX_FLOAT result = SizeOfBlackWhiteBlackRun(fromX, fromY, toX, toY); - int32_t otherToX = fromX - (toX - fromX); - if (otherToX < 0) { - otherToX = -1; - } else if (otherToX >= m_image->GetWidth()) { - otherToX = m_image->GetWidth(); - } - int32_t otherToY = fromY - (toY - fromY); - if (otherToY < 0) { - otherToY = -1; - } else if (otherToY >= m_image->GetHeight()) { - otherToY = m_image->GetHeight(); - } - result += SizeOfBlackWhiteBlackRun(fromX, fromY, otherToX, otherToY); - return result - 1.0f; -} -FX_FLOAT CBC_QRDetector::SizeOfBlackWhiteBlackRun(int32_t fromX, - int32_t fromY, - int32_t toX, - int32_t toY) { - FX_BOOL steep = FXSYS_abs(toY - fromY) > FXSYS_abs(toX - fromX); - if (steep) { - int32_t temp = fromX; - fromX = fromY; - fromY = temp; - temp = toX; - toX = toY; - toY = temp; - } - int32_t dx = FXSYS_abs(toX - fromX); - int32_t dy = FXSYS_abs(toY - fromY); - int32_t error = -dx >> 1; - int32_t ystep = fromY < toY ? 1 : -1; - int32_t xstep = fromX < toX ? 1 : -1; - int32_t state = 0; - for (int32_t x = fromX, y = fromY; x != toX; x += xstep) { - int32_t realX = steep ? y : x; - int32_t realY = steep ? x : y; - if (state == 1) { - if (m_image->Get(realX, realY)) { - state++; - } - } else { - if (!m_image->Get(realX, realY)) { - state++; - } - } - if (state == 3) { - int32_t diffX = x - fromX; - int32_t diffY = y - fromY; - return (FX_FLOAT)sqrt((double)(diffX * diffX + diffY * diffY)); - } - error += dy; - if (error > 0) { - y += ystep; - error -= dx; - } - } - int32_t diffX = toX - fromX; - int32_t diffY = toY - fromY; - return (FX_FLOAT)sqrt((double)(diffX * diffX + diffY * diffY)); -} -CBC_QRAlignmentPattern* CBC_QRDetector::FindAlignmentInRegion( - FX_FLOAT overallEstModuleSize, - int32_t estAlignmentX, - int32_t estAlignmentY, - FX_FLOAT allowanceFactor, - int32_t& e) { - int32_t allowance = (int32_t)(allowanceFactor * overallEstModuleSize); - int32_t alignmentAreaLeftX = std::max(0, estAlignmentX - allowance); - int32_t alignmentAreaRightX = - std::min(m_image->GetWidth() - 1, estAlignmentX + allowance); - if (alignmentAreaRightX - alignmentAreaLeftX < overallEstModuleSize * 3) { - e = BCExceptionRead; - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - int32_t alignmentAreaTopY = std::max(0, estAlignmentY - allowance); - int32_t alignmentAreaBottomY = - std::min(m_image->GetHeight() - 1, estAlignmentY + allowance); - CBC_QRAlignmentPatternFinder alignmentFinder( - m_image, alignmentAreaLeftX, alignmentAreaTopY, - alignmentAreaRightX - alignmentAreaLeftX, - alignmentAreaBottomY - alignmentAreaTopY, overallEstModuleSize); - CBC_QRAlignmentPattern* qap = alignmentFinder.Find(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return qap; -} +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com +// Original code is licensed as follows: +/* + * Copyright 2007 ZXing authors + * + * 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 + +#include "xfa/src/fxbarcode/barcode.h" +#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h" +#include "xfa/src/fxbarcode/BC_ResultPoint.h" +#include "BC_QRFinderPattern.h" +#include "BC_QRCoderVersion.h" +#include "BC_FinderPatternInfo.h" +#include "BC_QRGridSampler.h" +#include "BC_QRAlignmentPatternFinder.h" +#include "BC_QRFinderPatternFinder.h" +#include "BC_QRDetectorResult.h" +#include "BC_QRDetector.h" +CBC_QRDetector::CBC_QRDetector(CBC_CommonBitMatrix* image) : m_image(image) {} +CBC_QRDetector::~CBC_QRDetector() {} +CBC_QRDetectorResult* CBC_QRDetector::Detect(int32_t hints, int32_t& e) { + CBC_QRFinderPatternFinder finder(m_image); + CBC_QRFinderPatternInfo* qpi = finder.Find(hints, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr info(qpi); + CBC_QRDetectorResult* qdr = ProcessFinderPatternInfo(info.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return qdr; +} +CBC_QRDetectorResult* CBC_QRDetector::ProcessFinderPatternInfo( + CBC_QRFinderPatternInfo* info, + int32_t& e) { + CBC_AutoPtr topLeft(info->GetTopLeft()); + CBC_AutoPtr topRight(info->GetTopRight()); + CBC_AutoPtr bottomLeft(info->GetBottomLeft()); + FX_FLOAT moduleSize = + CalculateModuleSize(topLeft.get(), topRight.get(), bottomLeft.get()); + if (moduleSize < 1.0f) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + int32_t dimension = ComputeDimension(topLeft.get(), topRight.get(), + bottomLeft.get(), moduleSize, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_QRCoderVersion* provisionalVersion = + CBC_QRCoderVersion::GetProvisionalVersionForDimension(dimension, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + int32_t modulesBetweenFPCenters = + provisionalVersion->GetDimensionForVersion() - 7; + CBC_QRAlignmentPattern* alignmentPattern = NULL; + if (provisionalVersion->GetAlignmentPatternCenters()->GetSize() > 0) { + FX_FLOAT bottomRightX = + topRight->GetX() - topLeft->GetX() + bottomLeft->GetX(); + FX_FLOAT bottomRightY = + topRight->GetY() - topLeft->GetY() + bottomLeft->GetY(); + FX_FLOAT correctionToTopLeft = + 1.0f - 3.0f / (FX_FLOAT)modulesBetweenFPCenters; + FX_FLOAT xtemp = (topLeft->GetX() + + correctionToTopLeft * (bottomRightX - topLeft->GetX())); + int32_t estAlignmentX = (int32_t)xtemp; + FX_FLOAT ytemp = (topLeft->GetY() + + correctionToTopLeft * (bottomRightY - topLeft->GetY())); + int32_t estAlignmentY = (int32_t)ytemp; + for (int32_t i = 4; i <= 16; i <<= 1) { + CBC_QRAlignmentPattern* temp = FindAlignmentInRegion( + moduleSize, estAlignmentX, estAlignmentY, (FX_FLOAT)i, e); + alignmentPattern = temp; + break; + } + } + CBC_CommonBitMatrix* bits = + SampleGrid(m_image, topLeft.get(), topRight.get(), bottomLeft.get(), + (CBC_ResultPoint*)(alignmentPattern), dimension, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CFX_PtrArray* points = new CFX_PtrArray; + if (alignmentPattern == NULL) { + points->Add(bottomLeft.release()); + points->Add(topLeft.release()); + points->Add(topRight.release()); + } else { + points->Add(bottomLeft.release()); + points->Add(topLeft.release()); + points->Add(topRight.release()); + points->Add(alignmentPattern); + } + return new CBC_QRDetectorResult(bits, points); +} +CBC_CommonBitMatrix* CBC_QRDetector::SampleGrid( + CBC_CommonBitMatrix* image, + CBC_ResultPoint* topLeft, + CBC_ResultPoint* topRight, + CBC_ResultPoint* bottomLeft, + CBC_ResultPoint* alignmentPattern, + int32_t dimension, + int32_t& e) { + FX_FLOAT dimMinusThree = (FX_FLOAT)dimension - 3.5f; + FX_FLOAT bottomRightX; + FX_FLOAT bottomRightY; + FX_FLOAT sourceBottomRightX; + FX_FLOAT sourceBottomRightY; + if (alignmentPattern != NULL) { + bottomRightX = alignmentPattern->GetX(); + bottomRightY = alignmentPattern->GetY(); + sourceBottomRightX = sourceBottomRightY = dimMinusThree - 3.0f; + } else { + bottomRightX = (topRight->GetX() - topLeft->GetX()) + bottomLeft->GetX(); + bottomRightY = (topRight->GetY() - topLeft->GetY()) + bottomLeft->GetY(); + sourceBottomRightX = sourceBottomRightY = dimMinusThree; + } + CBC_QRGridSampler& sampler = CBC_QRGridSampler::GetInstance(); + CBC_CommonBitMatrix* cbm = sampler.SampleGrid( + image, dimension, dimension, 3.5f, 3.5f, dimMinusThree, 3.5f, + sourceBottomRightX, sourceBottomRightY, 3.5f, dimMinusThree, + topLeft->GetX(), topLeft->GetY(), topRight->GetX(), topRight->GetY(), + bottomRightX, bottomRightY, bottomLeft->GetX(), bottomLeft->GetY(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return cbm; +} +int32_t CBC_QRDetector::ComputeDimension(CBC_ResultPoint* topLeft, + CBC_ResultPoint* topRight, + CBC_ResultPoint* bottomLeft, + FX_FLOAT moduleSize, + int32_t& e) { + int32_t tltrCentersDimension = Round( + CBC_QRFinderPatternFinder::Distance(topLeft, topRight) / moduleSize); + int32_t tlblCentersDimension = Round( + CBC_QRFinderPatternFinder::Distance(topLeft, bottomLeft) / moduleSize); + int32_t dimension = ((tltrCentersDimension + tlblCentersDimension) >> 1) + 7; + switch (dimension & 0x03) { + case 0: + dimension++; + break; + case 2: + dimension--; + break; + case 3: { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + } + } + return dimension; +} +FX_FLOAT CBC_QRDetector::CalculateModuleSize(CBC_ResultPoint* topLeft, + CBC_ResultPoint* topRight, + CBC_ResultPoint* bottomLeft) { + return (CalculateModuleSizeOneWay(topLeft, topRight) + + CalculateModuleSizeOneWay(topLeft, bottomLeft)) / + 2.0f; +} +FX_FLOAT CBC_QRDetector::CalculateModuleSizeOneWay( + CBC_ResultPoint* pattern, + CBC_ResultPoint* otherPattern) { + FX_FLOAT moduleSizeEst1 = SizeOfBlackWhiteBlackRunBothWays( + (int32_t)pattern->GetX(), (int32_t)pattern->GetY(), + (int32_t)otherPattern->GetX(), (int32_t)otherPattern->GetY()); + FX_FLOAT moduleSizeEst2 = SizeOfBlackWhiteBlackRunBothWays( + (int32_t)otherPattern->GetX(), (int32_t)otherPattern->GetY(), + (int32_t)pattern->GetX(), (int32_t)pattern->GetY()); + if (FXSYS_isnan(moduleSizeEst1)) { + return moduleSizeEst2; + } + if (FXSYS_isnan(moduleSizeEst2)) { + return moduleSizeEst1; + } + return (moduleSizeEst1 + moduleSizeEst2) / 14.0f; +} +int32_t CBC_QRDetector::Round(FX_FLOAT d) { + return (int32_t)(d + 0.5f); +} +FX_FLOAT CBC_QRDetector::SizeOfBlackWhiteBlackRunBothWays(int32_t fromX, + int32_t fromY, + int32_t toX, + int32_t toY) { + FX_FLOAT result = SizeOfBlackWhiteBlackRun(fromX, fromY, toX, toY); + int32_t otherToX = fromX - (toX - fromX); + if (otherToX < 0) { + otherToX = -1; + } else if (otherToX >= m_image->GetWidth()) { + otherToX = m_image->GetWidth(); + } + int32_t otherToY = fromY - (toY - fromY); + if (otherToY < 0) { + otherToY = -1; + } else if (otherToY >= m_image->GetHeight()) { + otherToY = m_image->GetHeight(); + } + result += SizeOfBlackWhiteBlackRun(fromX, fromY, otherToX, otherToY); + return result - 1.0f; +} +FX_FLOAT CBC_QRDetector::SizeOfBlackWhiteBlackRun(int32_t fromX, + int32_t fromY, + int32_t toX, + int32_t toY) { + FX_BOOL steep = FXSYS_abs(toY - fromY) > FXSYS_abs(toX - fromX); + if (steep) { + int32_t temp = fromX; + fromX = fromY; + fromY = temp; + temp = toX; + toX = toY; + toY = temp; + } + int32_t dx = FXSYS_abs(toX - fromX); + int32_t dy = FXSYS_abs(toY - fromY); + int32_t error = -dx >> 1; + int32_t ystep = fromY < toY ? 1 : -1; + int32_t xstep = fromX < toX ? 1 : -1; + int32_t state = 0; + for (int32_t x = fromX, y = fromY; x != toX; x += xstep) { + int32_t realX = steep ? y : x; + int32_t realY = steep ? x : y; + if (state == 1) { + if (m_image->Get(realX, realY)) { + state++; + } + } else { + if (!m_image->Get(realX, realY)) { + state++; + } + } + if (state == 3) { + int32_t diffX = x - fromX; + int32_t diffY = y - fromY; + return (FX_FLOAT)sqrt((double)(diffX * diffX + diffY * diffY)); + } + error += dy; + if (error > 0) { + y += ystep; + error -= dx; + } + } + int32_t diffX = toX - fromX; + int32_t diffY = toY - fromY; + return (FX_FLOAT)sqrt((double)(diffX * diffX + diffY * diffY)); +} +CBC_QRAlignmentPattern* CBC_QRDetector::FindAlignmentInRegion( + FX_FLOAT overallEstModuleSize, + int32_t estAlignmentX, + int32_t estAlignmentY, + FX_FLOAT allowanceFactor, + int32_t& e) { + int32_t allowance = (int32_t)(allowanceFactor * overallEstModuleSize); + int32_t alignmentAreaLeftX = std::max(0, estAlignmentX - allowance); + int32_t alignmentAreaRightX = + std::min(m_image->GetWidth() - 1, estAlignmentX + allowance); + if (alignmentAreaRightX - alignmentAreaLeftX < overallEstModuleSize * 3) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + int32_t alignmentAreaTopY = std::max(0, estAlignmentY - allowance); + int32_t alignmentAreaBottomY = + std::min(m_image->GetHeight() - 1, estAlignmentY + allowance); + CBC_QRAlignmentPatternFinder alignmentFinder( + m_image, alignmentAreaLeftX, alignmentAreaTopY, + alignmentAreaRightX - alignmentAreaLeftX, + alignmentAreaBottomY - alignmentAreaTopY, overallEstModuleSize); + CBC_QRAlignmentPattern* qap = alignmentFinder.Find(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return qap; +} -- cgit v1.2.3