---

Triangles.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/Models/Triangles.h"
#include "Teddy/Models/Vertex.h"
#include "Teddy/PhysicalComponents/Projection.h"
#include "Teddy/SysSupport/Messages.h"
#include "Teddy/SysSupport/StdIO.h"
using namespace Teddy::SysSupport;


namespace Teddy  {
namespace Models {


Triangles::Triangles(){
}


/*virtual*/ Triangles::~Triangles(){
}


/*virtual*/ void Triangles::draw( Projection *p ){

    /*if( isEnabled(EL_USE_ELEMENT_NORMAL|EL_HAS_ELEMENT_NORMAL) ){
        dmsg( M_INIT, "Drawing flat triangles" );

        p->beginTriangles();

        list<Vector*>::const_iterator  n_it  = normals .begin();
        list<Vertex*>::const_iterator  v1_it = vertices.begin();
        list<Vertex*>::const_iterator  v2_it = v1_it;
        Vertex                        *v0    = *v1_it++;
        while( n_it != normals.end() && v2_it != vertices.end() ){
            Vector *normal = *n_it++;
            p->normal( *normal );
            v0->draw( p );
            v2_it = v1_it;
            (*v2_it++)->draw( p ); if( v2_it == vertices.end() ){ dmsg( M_WARN, "TriangleFan missing vertices" ); break; }
            (*v2_it++)->draw( p );
            v1_it++;
        }

        p->end();

    }else{*/
        dmsg( M_INIT, "Drawing smoothed triangles" );

        p->beginTriangles();
        list<Vertex*>::const_iterator v_it = vertices.begin();
        while( v_it != vertices.end() ){
            (*v_it)->draw( p );
            v_it++;
        }

        p->end();
    //}

}


//  CSG
/*virtual*/ unsigned long Triangles::countCSGFaceElements(){
    unsigned long size = vertices.size();
    return size / 3;
}


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