1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef _BC_WHITERECTANLEDETECTOR_H_ 8 #define _BC_WHITERECTANLEDETECTOR_H_ 9 class CBC_CommonBitMatrix; 10 class CBC_ResultPoint; 11 class CBC_WhiteRectangleDetector { 12 public: 13 CBC_WhiteRectangleDetector(CBC_CommonBitMatrix* image); 14 CBC_WhiteRectangleDetector(CBC_CommonBitMatrix* image, 15 int32_t initSize, 16 int32_t x, 17 int32_t y); 18 virtual ~CBC_WhiteRectangleDetector(); 19 CFX_PtrArray* Detect(int32_t& e); 20 virtual void Init(int32_t& e); 21 22 private: 23 int32_t Round(float d); 24 CBC_ResultPoint* GetBlackPointOnSegment(FX_FLOAT aX, 25 FX_FLOAT aY, 26 FX_FLOAT bX, 27 FX_FLOAT bY); 28 int32_t DistanceL2(FX_FLOAT aX, FX_FLOAT aY, FX_FLOAT bX, FX_FLOAT bY); 29 CFX_PtrArray* CenterEdges(CBC_ResultPoint* y, 30 CBC_ResultPoint* z, 31 CBC_ResultPoint* x, 32 CBC_ResultPoint* t); 33 FX_BOOL ContainsBlackPoint(int32_t a, 34 int32_t b, 35 int32_t fixed, 36 FX_BOOL horizontal); 37 const static int32_t INIT_SIZE; 38 const static int32_t CORR; 39 40 CBC_CommonBitMatrix* m_image; 41 int32_t m_height; 42 int32_t m_width; 43 int32_t m_leftInit; 44 int32_t m_rightInit; 45 int32_t m_downInit; 46 int32_t m_upInit; 47 }; 48 #endif 49
