glc_3drep.cpp

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/****************************************************************************

 This file is part of the GLC-lib library.
 Copyright (C) 2005-2008 Laurent Ribon (laumaya@users.sourceforge.net)
 Version 2.0.0 Beta 1, packaged on April 2010.

 http://glc-lib.sourceforge.net

 GLC-lib is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 GLC-lib 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 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with GLC-lib; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *****************************************************************************/

#include "glc_3drep.h"
#include "../glc_factory.h"
#include "glc_mesh.h"

// Class chunk id
quint32 GLC_3DRep::m_ChunkId= 0xA702;

// Default constructor
GLC_3DRep::GLC_3DRep()
: GLC_Rep()
, m_pGeomList(new QList<GLC_Geometry*>)
, m_pType(new int(GLC_Rep::GLC_VBOGEOM))
{

}

// Construct a 3DRep with a geometry
GLC_3DRep::GLC_3DRep(GLC_Geometry* pGeom)
: GLC_Rep()
, m_pGeomList(new QList<GLC_Geometry*>)
, m_pType(new int(GLC_Rep::GLC_VBOGEOM))
{
        m_pGeomList->append(pGeom);
        setName(pGeom->name());
}

// Copy Constructor
GLC_3DRep::GLC_3DRep(const GLC_3DRep& rep)
: GLC_Rep(rep)
, m_pGeomList(rep.m_pGeomList)
, m_pType(rep.m_pType)
{

}

// Assignement operator
GLC_3DRep& GLC_3DRep::operator=(const GLC_3DRep& rep)
{
        clear();
        GLC_Rep::operator=(rep);
        m_pGeomList= rep.m_pGeomList;
        m_pType= rep.m_pType;

        return *this;
}

// Clone the representation
GLC_Rep* GLC_3DRep::clone() const
{
        return new GLC_3DRep(*this);
}

// Make a deep copy of the 3DRep
GLC_Rep* GLC_3DRep::deepCopy() const
{
        GLC_3DRep* pCloneRep= new GLC_3DRep;
        // Copy fields of the base class
        pCloneRep->setFileName(fileName());
        pCloneRep->setName(name());
        // Copy representation geometries
        const int size= m_pGeomList->size();
        for (int i= 0; i < size; ++i)
        {
                pCloneRep->addGeom(m_pGeomList->at(i)->clone());
        }
        return pCloneRep;
}

// Destructor
GLC_3DRep::~GLC_3DRep()
{
        clear();
}

// Get functions
// Return the class Chunk ID
quint32 GLC_3DRep::chunckID()
{
        return m_ChunkId;
}

// Return the type of representation
int GLC_3DRep::type() const
{
        return (*m_pType);
}

// Get functions

// Return true if the rep bounding box is valid
bool GLC_3DRep::boundingBoxIsValid() const
{
        bool result= !m_pGeomList->isEmpty();
        const int max= m_pGeomList->size();
        int index= 0;
        while (result && (index < max))
        {
                result= result && m_pGeomList->at(index)->boundingBoxIsValid();
                ++index;
        }
        return result;
}

// Return the 3DRep bounding Box
GLC_BoundingBox GLC_3DRep::boundingBox() const
{
        GLC_BoundingBox resultBox;
        const int size= m_pGeomList->size();
        for (int i= 0; i < size; ++i)
        {
                resultBox.combine(m_pGeomList->at(i)->boundingBox());
        }
        return resultBox;
}

// Get number of faces
unsigned int GLC_3DRep::faceCount() const
{
        unsigned int result= 0;
        if (!m_pGeomList->isEmpty())
        {
                const int size= m_pGeomList->size();
                for (int i= 0; i < size; ++i)
                {
                        result+= m_pGeomList->at(i)->faceCount();
                }
        }

        return result;
}

// Get number of vertex
unsigned int GLC_3DRep::vertexCount() const
{
        unsigned int result= 0;
        if (!m_pGeomList->isEmpty())
        {
                const int size= m_pGeomList->size();
                for (int i= 0; i < size; ++i)
                {
                        result+= m_pGeomList->at(i)->VertexCount();
                }
        }

        return result;
}

// Get number of materials
unsigned int GLC_3DRep::materialCount() const
{
        unsigned int result= 0;
        if (!m_pGeomList->isEmpty())
        {
                const int size= m_pGeomList->size();
                for (int i= 0; i < size; ++i)
                {
                        result+= m_pGeomList->at(i)->materialCount();
                }
        }

        return result;
}

// Get materials List
QSet<GLC_Material*> GLC_3DRep::materialSet() const
{
        QSet<GLC_Material*> result;
        if (!m_pGeomList->isEmpty())
        {
                const int size= m_pGeomList->size();
                for (int i= 0; i < size; ++i)
                {
                        result.unite(m_pGeomList->at(i)->materialSet());
                }
        }

        return result;
}

// Remove empty geometries
void GLC_3DRep::clean()
{
        QList<GLC_Geometry*>::iterator iGeomList= m_pGeomList->begin();
        while(iGeomList != m_pGeomList->constEnd())
        {
                if ((*iGeomList)->VertexCount() == 0)
                {
                        qDebug() << "Delete empty geom--------------------";
                        delete (*iGeomList);
                        iGeomList= m_pGeomList->erase(iGeomList);
                }
                else
                {
                        ++iGeomList;
                }
        }
}

// Reverse geometries normals
void GLC_3DRep::reverseNormals()
{
        const int size= m_pGeomList->size();
        for (int i= 0; i < size; ++i)
        {
                (*m_pGeomList)[i]->reverseNormals();
        }
}

// Load the representation
bool GLC_3DRep::load()
{
        Q_ASSERT((!(*m_pIsLoaded)) == m_pGeomList->isEmpty());
        if ((*m_pIsLoaded) || fileName().isEmpty())
        {
                qDebug() << "GLC_3DRep::load() Allready loaded or empty fileName";
                return false;
        }
        GLC_3DRep newRep= GLC_Factory::instance()->create3DRepFromFile(fileName());
        if (!newRep.isEmpty())
        {
                const int size= newRep.m_pGeomList->size();
                for (int i= 0; i < size; ++i)
                {
                        m_pGeomList->append(newRep.m_pGeomList->at(i));
                }
                newRep.m_pGeomList->clear();
                (*m_pIsLoaded)= true;
                return true;
        }
        else
        {
                return false;
        }
}
// Replace the representation
void GLC_3DRep::replace(GLC_Rep* pRep)
{
        GLC_3DRep* p3DRep= dynamic_cast<GLC_3DRep*>(pRep);
        Q_ASSERT(NULL != p3DRep);

        setFileName(p3DRep->fileName());
        setName(p3DRep->name());

        if (!p3DRep->isEmpty())
        {
                const int size= p3DRep->m_pGeomList->size();
                for (int i= 0; i < size; ++i)
                {
                        m_pGeomList->append(p3DRep->m_pGeomList->at(i));
                }
                p3DRep->m_pGeomList->clear();
                (*m_pIsLoaded)= true;
        }
}

// Replace the specified material by a new one
void GLC_3DRep::replaceMaterial(GLC_uint oldId, GLC_Material* pNewMaterial)
{
        //qDebug() << "GLC_3DRep::replaceMaterial";
        const int size= m_pGeomList->size();
        for (int i= 0; i < size; ++i)
        {
                GLC_Geometry* pGeom= m_pGeomList->at(i);
                if (pGeom->containsMaterial(oldId))
                {
                        Q_ASSERT(!pGeom->containsMaterial(pNewMaterial->id()));
                        GLC_Mesh* pMesh= dynamic_cast<GLC_Mesh*>(m_pGeomList->at(i));
                        if (NULL != pMesh)
                        {
                                pMesh->replaceMaterial(oldId, pNewMaterial);
                        }
                }
        }
}

// Merge this 3Drep with another 3DRep
void GLC_3DRep::merge(GLC_3DRep* pRep)
{
        // Get the number of geometry of pRep
        const int pRepSize= pRep->m_pGeomList->size();
        for (int i= 0; i < pRepSize; ++i)
        {
                addGeom(pRep->geomAt(i)->clone());
        }
}

// UnLoad the representation
bool GLC_3DRep::unload()
{
        Q_ASSERT((!(*m_pIsLoaded)) == m_pGeomList->isEmpty());
        if (!(*m_pIsLoaded) || fileName().isEmpty())
        {
                qDebug() << "GLC_3DRep::unload() Not loaded or empty fileName";
                return false;
        }

        const int size= m_pGeomList->size();
        for (int i= 0; i < size; ++i)
        {
                delete (*m_pGeomList)[i];
        }

        (*m_pIsLoaded)= false;
        return true;
}

// private services functions

// Clear the 3D representation
void GLC_3DRep::clear()
{
        if (isTheLast())
        {
                const int size= m_pGeomList->size();
                for (int i= 0; i < size; ++i)
                {
                        delete (*m_pGeomList)[i];
                }
                delete m_pGeomList;
                m_pGeomList= NULL;

                delete m_pType;
                m_pType= NULL;
        }
}
// Non Member methods
// Non-member stream operator
QDataStream &operator<<(QDataStream & stream, const GLC_3DRep & rep)
{
        quint32 chunckId= GLC_3DRep::m_ChunkId;
        stream << chunckId;

        // The representation name
        stream << rep.name();

        // Save the list of 3DRep materials
        QList<GLC_Material> materialsList;
        QList<GLC_Material*> sourceMaterialsList= rep.materialSet().toList();
        const int materialNumber= sourceMaterialsList.size();
        for (int i= 0; i < materialNumber; ++i)
        {
                materialsList.append(*(sourceMaterialsList.at(i)));
                materialsList[i].setId(sourceMaterialsList.at(i)->id());
        }
        // Save the list of materials
        stream << materialsList;

        // Save the list of mesh
        const int meshNumber= rep.m_pGeomList->size();
        stream << meshNumber;
        for (int i= 0; i < meshNumber; ++i)
        {
                GLC_Mesh* pMesh= dynamic_cast<GLC_Mesh*>(rep.m_pGeomList->at(i));
                if (NULL != pMesh)
                {
                        pMesh->saveToDataStream(stream);
                }
        }

        return stream;
}
QDataStream &operator>>(QDataStream & stream, GLC_3DRep & rep)
{
        Q_ASSERT(rep.isEmpty());

        quint32 chunckId;
        stream >> chunckId;
        Q_ASSERT(chunckId == GLC_3DRep::m_ChunkId);

        // The rep name
        QString name;
        stream >> name;
        rep.setName(name);

        // Retrieve the list of rep materials
        QList<GLC_Material> materialsList;
        stream >> materialsList;
        MaterialHash materialHash;
        // Update mesh materials hash table
        QHash<GLC_uint, GLC_uint> materialIdMap;
        const int materialsCount= materialsList.size();
        for (int i= 0; i < materialsCount; ++i)
        {
                GLC_Material* pMaterial= new GLC_Material(materialsList.at(i));
                pMaterial->setId(glc::GLC_GenID());
                materialIdMap.insert(materialsList.at(i).id(), pMaterial->id());
                materialHash.insert(pMaterial->id(), pMaterial);
        }

        int meshNumber;
        stream >> meshNumber;
        for (int i= 0; i < meshNumber; ++i)
        {
                GLC_Mesh* pMesh= new GLC_Mesh();
                pMesh->loadFromDataStream(stream, materialHash, materialIdMap);

                rep.addGeom(pMesh);
        }

        return stream;
}