---

Capsule.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/Capsule.h"
#include "Teddy/Models/QuadStrip.h"
#include "Teddy/Models/Vertex.h"
#include "Teddy/SysSupport/StdMaths.h"


namespace Teddy  {
namespace Models {


Capsule::Capsule(
    const std::string &name, 
    const double       len,
    const double       rad,
    const int          stacks,
    const int          slices
)
:Model( name ){

    double r;
    double x;
    double y;
    double z;
    int    i;
    int    j;
    int    k;

    this->radius = rad;
    this->stacks = stacks;
    this->slices = slices;

    for( j=0; j<stacks/2; j++ ){
        QuadStrip *qs = new QuadStrip();
        for( i=0; i<slices+1; i++ ){
            for( k=0; k<2; k++ ){
                z = radius*cos( (j+k)*M_PI/stacks );
                r = radius*sin( (j+k)*M_PI/stacks );
                y = r*cos( i*M_2_PI/slices );
                x = r*sin( i*M_2_PI/slices );
                Vertex *v = new Vertex( x, y, z + len/2 );
                Vector normal = Vector( x, y, z );
                normal.normalize();
                v->setNormal( normal );
                qs->add( v );
            }
        }
        add( qs );
    }

    j=stacks/2;

    QuadStrip *qs = new QuadStrip();
    for( i=0; i<slices+1; i++ ){
        for( k=0; k<2; k++ ){
            z = radius*cos( (j/*+k*/)*M_PI/stacks );
            r = radius*sin( (j/*+k*/)*M_PI/stacks );
            y = r*cos( i*M_2_PI/slices );
            x = r*sin( i*M_2_PI/slices );
            Vertex *v = new Vertex( x, y, z + len/2 - (k * len) );
            Vector normal = Vector( x, y, z );
            normal.normalize();
            v->setNormal( normal );
            qs->add( v );
        }
    }
    add( qs );

    for( j=stacks/2; j<stacks; j++ ){
        QuadStrip *qs = new QuadStrip();
        for( i=0; i<slices+1; i++ ){
            for( k=0; k<2; k++ ){
                z = radius*cos( (j+k)*M_PI/stacks );
                r = radius*sin( (j+k)*M_PI/stacks );
                y = r*cos( i*M_2_PI/slices );
                x = r*sin( i*M_2_PI/slices );
                Vertex *v = new Vertex( x, y, z - len/2 );
                Vector normal = Vector( x, y, z );
                normal.normalize();
                v->setNormal( normal );
                qs->add( v );
            }
        }
        add( qs );
    }

    setupClipRadius();
}


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