---

ModelDraw.cpp

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/*
    TEDDY - General graphics application library
    Copyright (C) 1999-2002  Timo Suoranta
    tksuoran@cc.helsinki.fi

    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 2.1 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

    $Id:  $
*/


#include "Teddy/Materials/Material.h"
#include "Teddy/Models/Model.h"
#include "Teddy/Models/Geometry.h"
#include "Teddy/PhysicalComponents/Projection.h"
#include "Teddy/Scenes/Camera.h"
#include "Teddy/SysSupport/StdMaths.h"
#include "Teddy/SysSupport/Messages.h"
using namespace Teddy::Graphics;
using namespace Teddy::Materials;
using namespace Teddy::Scenes;
using namespace Teddy::SysSupport;


namespace Teddy  {
namespace Models {


void Model::doMaterial( Projection *p, Model *parent ){
    if( material == NULL ){
        if( parent != NULL ){
            parent->doMaterial( p );
        }else{
            p->doMaterial( &Material::RED );
        }
    }else{
        p->doMaterial( material );
    }
}


/*virtual*/ void Model::draw( Projection *p, Model *parent ){
    Camera *c = p->getCamera();

    if( isEnabled(OPT_VISIBLE) == true ){
        bool setup = false;

        //  Draw self
        c->doObjectMatrix( p, getLocalToWorldMatrix() );
        if( c->cull(*this) == false ){
            if( geometry != NULL ){
                doMaterial( p, parent );
                setup = true;

//              dmsg( M_INIT, "Drawing %s", getName().c_str() );
                while( p->materialPass() ){
                    geometry->draw( p );
                }
            }else{
//              dmsg( M_INIT, "Not drawing %s, has no geometry", getName().c_str() );
            }
        }else{
//          dmsg( M_INIT, "Not drawing %s, culled", getName().c_str() );
        }

        //  Draw children
        if( children.size() > 0 ){
            if( setup == false ){
                doMaterial( p, parent );
            }
            c->pushObjectMatrix();
            list<Model*>::iterator m_it = children.begin();
            while( m_it != children.end() ){
                (*m_it)->draw( p, material != NULL ? this : parent );
                m_it++;
            }
            c->popObjectMatrix();
        }
    }else{
//      dmsg( M_INIT, "Not drawing %s, not visible", getName().c_str() );
    }
}


};  //  namespace Models
};  //  namespace Teddy