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// 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
#ifndef _BC_WHITERECTANLEDETECTOR_H_
#define _BC_WHITERECTANLEDETECTOR_H_
class CBC_CommonBitMatrix;
class CBC_ResultPoint;
class CBC_WhiteRectangleDetector
{
public:
CBC_WhiteRectangleDetector(CBC_CommonBitMatrix *image);
CBC_WhiteRectangleDetector(CBC_CommonBitMatrix *image, FX_INT32 initSize, FX_INT32 x, FX_INT32 y);
virtual ~CBC_WhiteRectangleDetector();
CFX_PtrArray *Detect(FX_INT32 &e);
virtual void Init(FX_INT32 &e);
private:
FX_INT32 Round(float d);
CBC_ResultPoint *GetBlackPointOnSegment(FX_FLOAT aX, FX_FLOAT aY, FX_FLOAT bX, FX_FLOAT bY);
FX_INT32 DistanceL2(FX_FLOAT aX, FX_FLOAT aY, FX_FLOAT bX, FX_FLOAT bY);
CFX_PtrArray *CenterEdges(CBC_ResultPoint *y, CBC_ResultPoint *z,
CBC_ResultPoint *x, CBC_ResultPoint *t);
FX_BOOL ContainsBlackPoint(FX_INT32 a, FX_INT32 b, FX_INT32 fixed, FX_BOOL horizontal);
const static FX_INT32 INIT_SIZE;
const static FX_INT32 CORR;
CBC_CommonBitMatrix *m_image;
FX_INT32 m_height;
FX_INT32 m_width;
FX_INT32 m_leftInit;
FX_INT32 m_rightInit;
FX_INT32 m_downInit;
FX_INT32 m_upInit;
};
#endif
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