glc_renderproperties.cpp

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

 This file is part of the GLC-lib library.
 Copyright (C) 2005-2008 Laurent Ribon (laumaya@users.sourceforge.net)
 http://glc-lib.sourceforge.net

 GLC-lib 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 3 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 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser 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_renderproperties.h"

// Default constructor
GLC_RenderProperties::GLC_RenderProperties()
: m_Uid(glc::GLC_GenUserID())
, m_IsSelected(false)
, m_PolyFace(GL_FRONT_AND_BACK)
, m_PolyMode(GL_FILL)
, m_RenderMode(glc::NormalRenderMode)
, m_SavedRenderMode(m_RenderMode)
, m_pOverwriteMaterial(NULL)
, m_OverwriteOpacity(-1.0f)
, m_pBodySelectedPrimitvesId(NULL)
, m_pOverwritePrimitiveMaterialMaps(NULL)
, m_RenderingFlag(glc::ShadingFlag)
, m_CurrentBody(0)
, m_MaterialsUsage()
{

}

// Copy constructor
GLC_RenderProperties::GLC_RenderProperties(const GLC_RenderProperties& renderProperties)
: m_Uid(glc::GLC_GenUserID())
, m_IsSelected(renderProperties.m_IsSelected)
, m_PolyFace(renderProperties.m_PolyFace)
, m_PolyMode(renderProperties.m_PolyMode)
, m_RenderMode(renderProperties.m_RenderMode)
, m_SavedRenderMode(renderProperties.m_SavedRenderMode)
, m_pOverwriteMaterial(renderProperties.m_pOverwriteMaterial)
, m_OverwriteOpacity(renderProperties.m_OverwriteOpacity)
, m_pBodySelectedPrimitvesId(NULL)
, m_pOverwritePrimitiveMaterialMaps(NULL)
, m_RenderingFlag(renderProperties.m_RenderingFlag)
, m_CurrentBody(renderProperties.m_CurrentBody)
, m_MaterialsUsage(renderProperties.m_MaterialsUsage)
{
        // Update overwrite material usage
        if (NULL != m_pOverwriteMaterial)
        {
                m_pOverwriteMaterial->addUsage(m_Uid);
        }

        // Copy the Hash of set of id of selected primitives
        if (NULL != renderProperties.m_pBodySelectedPrimitvesId)
        {
                m_pBodySelectedPrimitvesId= new QHash<int, QSet<GLC_uint>* >();
                QHash<int, QSet<GLC_uint>* >::const_iterator iSet= renderProperties.m_pBodySelectedPrimitvesId->constBegin();
                while (renderProperties.m_pBodySelectedPrimitvesId->constEnd() != iSet)
                {
                        // Copy the current body set of id of selected primitive
                        m_pBodySelectedPrimitvesId->insert(iSet.key(), new QSet<GLC_uint>(*(iSet.value())));
                        ++iSet;
                }
        }

        // Copy of the overwrite primitive materials maps
        if (NULL != renderProperties.m_pOverwritePrimitiveMaterialMaps)
        {
                // Copy the hash table of overwrite materials
                m_pOverwritePrimitiveMaterialMaps= new QHash<int, QHash<GLC_uint, GLC_Material*>* >;
                QHash<int, QHash<GLC_uint, GLC_Material*>* >::const_iterator iMatMaps= renderProperties.m_pOverwritePrimitiveMaterialMaps->constBegin();
                while (renderProperties.m_pOverwritePrimitiveMaterialMaps->constEnd() != iMatMaps)
                {
                        QHash<GLC_uint, GLC_Material*>* pBodyMatMap= new QHash<GLC_uint, GLC_Material*>(*(iMatMaps.value()));
                        m_pOverwritePrimitiveMaterialMaps->insert(iMatMaps.key(), pBodyMatMap);
                        ++iMatMaps;
                }
        }

        // Update material usage
        QHash<GLC_Material*, int>::iterator iMatUsage= m_MaterialsUsage.begin();
        while (m_MaterialsUsage.constEnd() != iMatUsage)
        {
                iMatUsage.key()->addUsage(m_Uid);
                ++iMatUsage;
        }
}

// Assignement operator
GLC_RenderProperties& GLC_RenderProperties::operator=(const GLC_RenderProperties& renderProperties)
{
        if (this != &renderProperties)
        {
                clear();
                m_IsSelected= renderProperties.m_IsSelected;
                m_PolyFace= renderProperties.m_PolyFace;
                m_PolyMode= renderProperties.m_PolyMode;
                m_RenderMode= renderProperties.m_RenderMode;
                m_SavedRenderMode= renderProperties.m_SavedRenderMode;
                m_pOverwriteMaterial= renderProperties.m_pOverwriteMaterial;
                m_OverwriteOpacity= renderProperties.m_OverwriteOpacity;
                m_pBodySelectedPrimitvesId= NULL;
                m_pOverwritePrimitiveMaterialMaps= NULL;
                m_RenderingFlag= renderProperties.m_RenderingFlag;
                m_CurrentBody= renderProperties.m_CurrentBody;

                // Update overwrite material usage
                if (NULL != m_pOverwriteMaterial)
                {
                        m_pOverwriteMaterial->addUsage(m_Uid);
                }

                // Copy the Hash of set of id of selected primitives
                if (NULL != renderProperties.m_pBodySelectedPrimitvesId)
                {
                        m_pBodySelectedPrimitvesId= new QHash<int, QSet<GLC_uint>* >();
                        QHash<int, QSet<GLC_uint>* >::const_iterator iSet= renderProperties.m_pBodySelectedPrimitvesId->constBegin();
                        while (renderProperties.m_pBodySelectedPrimitvesId->constEnd() != iSet)
                        {
                                // Copy the current body set of id of selected primitive
                                m_pBodySelectedPrimitvesId->insert(iSet.key(), new QSet<GLC_uint>(*(iSet.value())));
                                ++iSet;
                        }
                }

                // Update primitive overwrite material usage
                if (NULL != renderProperties.m_pOverwritePrimitiveMaterialMaps)
                {
                        // Copy the hash table of overwrite materials
                        m_pOverwritePrimitiveMaterialMaps= new QHash<int, QHash<GLC_uint, GLC_Material*>* >;
                        QHash<int, QHash<GLC_uint, GLC_Material*>* >::const_iterator iMatMaps= renderProperties.m_pOverwritePrimitiveMaterialMaps->constBegin();
                        while (renderProperties.m_pOverwritePrimitiveMaterialMaps->constEnd() != iMatMaps)
                        {
                                QHash<GLC_uint, GLC_Material*>* pBodyMatMap= new QHash<GLC_uint, GLC_Material*>(*(iMatMaps.value()));
                                m_pOverwritePrimitiveMaterialMaps->insert(iMatMaps.key(), pBodyMatMap);

                                QHash<GLC_uint, GLC_Material*>::iterator iMatMap= pBodyMatMap->begin();
                                while (pBodyMatMap->constEnd() != iMatMap)
                                {
                                        iMatMap.value()->addUsage(m_Uid);
                                        ++iMatMap;
                                }

                                ++iMatMaps;
                        }
                }
        }

        return *this;
}

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

// Return true if rendering properties needs to render with transparency
bool GLC_RenderProperties::needToRenderWithTransparency() const
{
        bool renderWithTransparency= false;
        if (m_RenderMode == glc::OverwriteMaterial)
        {
                Q_ASSERT(NULL != m_pOverwriteMaterial);
                renderWithTransparency= m_pOverwriteMaterial->isTransparent();
        }
        else if (m_RenderMode == glc::OverwriteTransparency)
        {
                Q_ASSERT(-1.0f != m_OverwriteOpacity);
                renderWithTransparency= (m_OverwriteOpacity < 1.0f);
        }
        else if ((m_RenderMode == glc::OverwritePrimitiveMaterial)
                        || ((m_RenderMode == glc::PrimitiveSelected) && (NULL != m_pOverwritePrimitiveMaterialMaps) && (!m_pOverwritePrimitiveMaterialMaps->isEmpty())))
        {
                Q_ASSERT(NULL != m_pOverwritePrimitiveMaterialMaps);
                Q_ASSERT(!m_pOverwritePrimitiveMaterialMaps->isEmpty());

                QList<QHash<GLC_uint, GLC_Material* >* > hashList= m_pOverwritePrimitiveMaterialMaps->values();
                QSet<GLC_Material*> materialSet;
                const int size= hashList.size();
                for (int i= 0; i < size; ++i)
                {
                        materialSet.unite(QSet<GLC_Material*>::fromList(hashList.at(i)->values()));
                }

                QSet<GLC_Material*>::const_iterator iMat= materialSet.constBegin();
                while ((materialSet.constEnd() != iMat) && !renderWithTransparency)
                {
                        renderWithTransparency= (*iMat)->isTransparent();
                        ++iMat;
                }
        }

        return renderWithTransparency;
}

bool GLC_RenderProperties::isDefault() const
{
        bool isDefault= (NULL == m_pOverwriteMaterial);
        isDefault= isDefault && (m_OverwriteOpacity == -1.0f);
        return isDefault;
}

// Clear the content of the render properties and update materials usage
void GLC_RenderProperties::clear()
{
        if (NULL != m_pOverwriteMaterial)
        {
                // Delete the material if it is unused
                m_pOverwriteMaterial->delUsage(m_Uid);
                if (m_pOverwriteMaterial->isUnused()) delete m_pOverwriteMaterial;
                m_pOverwriteMaterial= NULL;
        }

        clearSelectedPrimitives();

        clearOverwritePrimitiveMaterials();
}

// Set the overwrite material
void GLC_RenderProperties::setOverwriteMaterial(GLC_Material* pMaterial)
{
        Q_ASSERT(NULL != pMaterial);
        if (NULL != m_pOverwriteMaterial)
        {
                m_pOverwriteMaterial->delUsage(m_Uid);
                if (m_pOverwriteMaterial->isUnused()) delete m_pOverwriteMaterial;
        }
        m_pOverwriteMaterial= pMaterial;

        m_pOverwriteMaterial->addUsage(m_Uid);
}

// Return true if the specified primitive id of the specified body index is selected
bool GLC_RenderProperties::primitiveIsSelected(int index, GLC_uint id) const
{
        bool result= false;
        if ((NULL != m_pBodySelectedPrimitvesId) && m_pBodySelectedPrimitvesId->contains(m_CurrentBody))
        {
                result= m_pBodySelectedPrimitvesId->value(index)->contains(id);
        }
        return result;
}

// Set the list of selected primitives id
void GLC_RenderProperties::addSetOfSelectedPrimitivesId(const QSet<GLC_uint>& set, int body)
{
        if (NULL == m_pBodySelectedPrimitvesId)
        {
                m_pBodySelectedPrimitvesId= new QHash<int, QSet<GLC_uint>* >();
                m_pBodySelectedPrimitvesId->insert(body, new QSet<GLC_uint>(set));
        }
        else if (!m_pBodySelectedPrimitvesId->contains(body))
        {
                m_pBodySelectedPrimitvesId->insert(body, new QSet<GLC_uint>(set));
        }
        else
        {
                m_pBodySelectedPrimitvesId->value(body)->unite(set);
        }
}

// Add a selected primitive
void GLC_RenderProperties::addSelectedPrimitive(GLC_uint id, int body)
{
        if (NULL == m_pBodySelectedPrimitvesId)
        {
                m_pBodySelectedPrimitvesId= new QHash<int, QSet<GLC_uint>* >();
                m_pBodySelectedPrimitvesId->insert(body, new QSet<GLC_uint>());

        }
        else if (!m_pBodySelectedPrimitvesId->contains(body))
        {
                m_pBodySelectedPrimitvesId->insert(body, new QSet<GLC_uint>());
        }
        m_pBodySelectedPrimitvesId->value(body)->insert(id);
}

// Clear selectedPrimitive Set
void GLC_RenderProperties::clearSelectedPrimitives()
{
        if (NULL != m_pBodySelectedPrimitvesId)
        {
                QHash<int, QSet<GLC_uint>* >::const_iterator iSet= m_pBodySelectedPrimitvesId->constBegin();
                while (m_pBodySelectedPrimitvesId->constEnd() != iSet)
                {
                        delete iSet.value();
                        ++iSet;
                }
        }
        delete m_pBodySelectedPrimitvesId;
        m_pBodySelectedPrimitvesId= NULL;
}

// Add an overwrite primitive material
void GLC_RenderProperties::addOverwritePrimitiveMaterial(GLC_uint id, GLC_Material* pMaterial, int bodyIndex)
{
        Q_ASSERT(NULL != pMaterial);
        if (NULL != m_pOverwritePrimitiveMaterialMaps)
        {
                if (m_pOverwritePrimitiveMaterialMaps->contains(bodyIndex))
                {
                        QHash<GLC_uint, GLC_Material*>* pHash= m_pOverwritePrimitiveMaterialMaps->value(bodyIndex);
                        if (pHash->contains(id))
                        {
                                if (pHash->value(id) != pMaterial)
                                {
                                        GLC_Material* pOldMaterial= pHash->value(id);
                                        unUseMaterial(pOldMaterial);
                                        pHash->remove(id);

                                        pHash->insert(id, pMaterial);
                                        useMaterial(pMaterial);
                                }
                                // Else, noting to do
                        }
                        else
                        {
                                pHash->insert(id, pMaterial);
                                useMaterial(pMaterial);
                        }
                }
                else
                {
                        QHash<GLC_uint, GLC_Material*>* pHash= new QHash<GLC_uint, GLC_Material*>();
                        pHash->insert(id, pMaterial);
                        useMaterial(pMaterial);
                        m_pOverwritePrimitiveMaterialMaps->insert(bodyIndex, pHash);
                }
        }
        else
        {
                m_pOverwritePrimitiveMaterialMaps= new QHash<int, QHash<GLC_uint, GLC_Material*>* >();
                QHash<GLC_uint, GLC_Material*>* pHash= new QHash<GLC_uint, GLC_Material*>();
                pHash->insert(id, pMaterial);
                m_pOverwritePrimitiveMaterialMaps->insert(bodyIndex, pHash);
                useMaterial(pMaterial);
        }
}

// Clear overwrite primitive materials
void GLC_RenderProperties::clearOverwritePrimitiveMaterials()
{
        if (NULL != m_pOverwritePrimitiveMaterialMaps)
        {
                Q_ASSERT(!m_MaterialsUsage.isEmpty());
                QHash<int, QHash<GLC_uint, GLC_Material* >* >::iterator iHash= m_pOverwritePrimitiveMaterialMaps->begin();
                while (m_pOverwritePrimitiveMaterialMaps->constEnd() != iHash)
                {
                        delete iHash.value();
                        ++iHash;
                }

                QHash<GLC_Material*, int>::iterator iMat= m_MaterialsUsage.begin();
                while (m_MaterialsUsage.constEnd() != iMat)
                {
                        GLC_Material* pMat= iMat.key();
                        pMat->delUsage(m_Uid);
                        if (pMat->isUnused()) delete pMat;
                        ++iMat;
                }
                m_MaterialsUsage.clear();
        }
        else
        {
                Q_ASSERT(m_MaterialsUsage.isEmpty());
        }

        delete m_pOverwritePrimitiveMaterialMaps;
        m_pOverwritePrimitiveMaterialMaps= NULL;
}