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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
// Original author of this file is igor@c-base.org
//
#ifndef _ConnectedComps_H_
#define _ConnectedComps_H_
#include "../api.h"
#include "Run.h"
#include "../graphics/Bitmap.h"
#include "../graphics/Pixel32.h"
#include "../base/GLMHelper.h"
#include <vector>
#include <boost/shared_ptr.hpp>
#include <boost/weak_ptr.hpp>
namespace avg {
class Blob;
typedef boost::shared_ptr<class Blob> BlobPtr;
typedef boost::weak_ptr<class Blob> BlobWeakPtr;
typedef std::vector<BlobPtr> BlobVector;
typedef std::vector<BlobWeakPtr> BlobWeakPtrVector;
typedef boost::shared_ptr<BlobVector> BlobVectorPtr;
typedef std::vector<IntPoint> ContourSeq;
class AVG_API Blob
{
public:
Blob(const Run& run);
~Blob();
void addRun(const Run& run);
void merge(const BlobPtr& other);
RunArray* getRuns();
void render(BitmapPtr pSrcBmp, BitmapPtr pDestBmp, Pixel32 Color,
int Min, int Max, bool bFinger, bool bMarkCenter,
Pixel32 CenterColor= Pixel32(0x00, 0x00, 0xFF, 0xFF));
bool contains(IntPoint pt);
void calcStats();
void calcContour(int Precision);
ContourSeq getContour();
const glm::vec2& getCenter() const;
const glm::vec2& getEstimatedNextCenter() const;
float getArea() const;
const IntRect & getBoundingBox() const;
float getEccentricity() const;
float getInertia() const;
float getOrientation() const;
const glm::vec2& getScaledBasis(int i) const;
const glm::vec2& getEigenVector(int i) const;
const glm::vec2& getEigenValues() const;
void calcNextCenter(glm::vec2 oldCenter);
void clearRelated();
void addRelated(BlobPtr pBlob);
const BlobPtr getFirstRelated();
BlobPtr m_pParent;
private:
Blob(const Blob &);
glm::vec2 calcCenter();
IntRect calcBBox();
int calcArea();
void initRowPositions();
IntPoint findNeighborInside(const IntPoint& Pt, int& Dir);
bool ptIsInBlob(const IntPoint& Pt);
RunArray m_Runs; // This array is unsorted until contours are calculated.
std::vector<RunArray::iterator> m_RowPositions;
BlobWeakPtrVector m_RelatedBlobs; // For fingers, this contains the hand.
// For hands, this contains the fingers.
bool m_bStatsAvailable;
glm::vec2 m_EstimatedNextCenter;
glm::vec2 m_Center;
float m_Area;
IntRect m_BoundingBox;
float m_Eccentricity;
float m_Inertia;
float m_Orientation;
glm::vec2 m_ScaledBasis[2];
glm::vec2 m_EigenVector[2];
glm::vec2 m_EigenValues;
ContourSeq m_Contour;
};
BlobVectorPtr AVG_API findConnectedComponents(BitmapPtr pBmp,
unsigned char threshold);
}
#endif
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