CylinderInt.h

//===========================================================================
// GoTools - SINTEF Geometry Tools
//
// GoTools module: Intersections, version 1.0
//
// Copyright (C) 2000-2007 SINTEF ICT, Applied Mathematics, Norway.
//
// 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 version 2 of the License. 
//
// 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.                                           
//
// Contact information: E-mail: tor.dokken@sintef.no                      
// SINTEF ICT, Department of Applied Mathematics,                         
// P.O. Box 124 Blindern,                                                 
// 0314 Oslo, Norway.                                                     
//
// Other licenses are also available for this software, notably licenses
// for:
// - Building commercial software.                                        
// - Building software whose source code you wish to keep private.        
//===========================================================================
#ifndef _CYLINDERINT_H
#define _CYLINDERINT_H


#include "AlgObj3DInt.h"
#include "Point.h"


namespace Go {



class SplineSurface;



class CylinderInt : public AlgObj3DInt
{
public:
    CylinderInt();

    CylinderInt(Point ax_pt, Point ax_dir, double radius);

    virtual ~CylinderInt();

    void read(std::istream& is);

    Point ax_pt() const;
    Point ax_dir() const;
    double radius() const;

    SplineSurface* surface(Point bottom_pos, double height) const;


private:

    Point ax_pt_; // 3D ref point (x_0, y_0, z_0).
    Point ax_dir_; // 3D ref point (x_0, y_0, z_0).
    double radius_; // (x-x0)^2 + (y-y0)^2 + (z-z0)^2 = radius_^2

    // Setting the values for the implicit surface representation
    // using ac_pt_, ax_dir_ & radius_.
    void setImplicitValues();

};


} // namespace Go


#endif // _CYLINDERINT_H

---