Shape.hpp

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//  This file is part of ff3d - http://www.freefem.org/ff3d
//  Copyright (C) 2001, 2002, 2003 Stéphane Del Pino

//  This program 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, or (at your option)
//  any later version.

//  This program 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 this program; if not, write to the Free Software Foundation,
//  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

//  $Id: Shape.hpp,v 1.13 2007/11/20 22:24:41 delpinux Exp $

#ifndef SHAPE_HPP
#define SHAPE_HPP

#include <ReferenceCounting.hpp>
#include <Transform.hpp>

#include <vector>

class Shape
{
public:
  enum ShapeType { 
    sphere          = 1,
    cylinder        = 2,
    cone            = 3,
    cube            = 4,
    plane           = 5,
    torus           = 6,
    union_          = 7,    
    difference      = 8,
    intersection    = 9,
    not_            =10,
    infiniteCylinder=11,
    infiniteCone    =12,
    analytic        =13
  };

  typedef std::vector<ConstReferenceCounting<Transform> > TransformationsList;

protected:
  const ShapeType __type;       
  TransformationsList __trans;  
  virtual bool __inShape(const TinyVector<3, real_t>& x) const = 0;

  virtual std::ostream& __put(std::ostream& os) const = 0;


  virtual ReferenceCounting<Shape> __getCopy() const = 0;

public:
  ReferenceCounting<Shape> getCopy() const
  {
    ReferenceCounting<Shape> shape = this->__getCopy();
    TransformationsList transformationsList;
    for (TransformationsList::const_iterator i=__trans.begin();
         i != __trans.end(); ++i) {
      const ConstReferenceCounting<Transform>& t = *i;
      transformationsList.push_back(t->getCopy());
    }
    shape->setTransformationsList(transformationsList);

    return shape;
  }

  const TransformationsList& transformationsList() const
  {
    return __trans;
  }

  void setTransformationsList(const TransformationsList& l)
  {
    __trans = l;
  }

  inline bool inside(const TinyVector<3,real_t>& x) const
  {
    TinyVector<3,real_t> X = x;
    for (size_t i = numberOfTransformations()-1; i<numberOfTransformations(); --i)
      X = inverseTransformation(i, X);
    return this->__inShape(X);
  }

  const ShapeType& type() const
  { 
    return __type;
  }

  inline size_t numberOfTransformations() const
  {
    return __trans.size();
  }

  void setTransformation(const Transform& t);

  TinyVector<3, real_t> inverseTransformation(const size_t& i,
                                              const TinyVector<3,real_t>& x) const
  {
    return __trans[i]->inverse(x);
  }

  friend std::ostream& operator << (std::ostream& os,
                                    const Shape& shape);

  void parseTransform(const parsetrans& trans);

  Shape(const ShapeType& type)
    : __type(type)
  {
    ;
  }

  Shape(const Shape& shape)
    : __type(shape.__type),
      __trans(shape.__trans)
  {
    ;
  }

  virtual ~Shape()
  {
    ;
  }
};

#endif // SHAPE_HPP

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