Geometry.h

/********************************************************************/
/* Copyright (c) 2015 DG Technologies Inc. and Yuzi Mizuno          */
/* All rights reserved.                                             */
/********************************************************************/

#ifndef _MGGeometry_HH_
#define _MGGeometry_HH_

#include "mg/Object.h"
#include "mg/Box.h"
#include "mg/Unit_vector.h"

//Define MGGeometry Class.
class MGIfstream;
class MGOfstream;
class MGInterval;
class MGBox;
class MGVector;
class MGPosition;
class MGPosition_list;
class MGMatrix;
class MGTransf;
class MGCurve;
class MGSurface;
class MGPoint;


class MG_DLL_DECLR MGGeometry: public MGObject{

public:


MGGeometry();

MGGeometry(const MGGeometry& geo2);

virtual ~MGGeometry();


virtual MGGeometry& operator=(const MGGeometry& gel2){return set_geometry(gel2);};

virtual std::ostream& out(std::ostream&) const;

virtual MGGeometry* geometry(){return this;};
virtual const MGGeometry* geometry()const{return this;};


const MGBox& box() const;

virtual MGPosition center() const=0;

virtual MGPosition center_param() const=0;

virtual MGGeometry& change_dimension(
    int sdim,           
    int start1=0,       
    int start2=0        
)=0;

virtual MGGeometry* clone()const=0;

virtual MGGeometry* copy_change_dimension(
    int sdim,       
    int start1=0,   
    int start2=0        
)const=0;

virtual MGUnit_vector direction(const MGPosition& param) const;

virtual void draw3DVertex(mgVBO& vbo)const;

virtual MGVector evaluate(
    const MGPosition& t,    
    const int* nderiv=0 
) const=0;

virtual bool in_range(const MGPosition& t)const{return false;}

bool is_null()const{return sdim()==0;};

virtual void negate(){return;};

virtual void negate_transform(MGGeometry& boundary)const=0;

double parameter_error() const;

virtual MGBox parameter_range() const=0;

virtual int sdim() const=0;

virtual std::string whoami()const{return "Geometry";};

protected:

mutable MGBox* m_box;

virtual MGBox* compute_box() const=0;

virtual void ReadMembers(MGIfstream& buf);

MGGeometry& set_geometry(const MGGeometry& geo2);

virtual void update_mark(){if(m_box){delete m_box;m_box=0;}};
    
virtual void WriteMembers(MGOfstream& buf)const;

private:

};
 // end of GEO group
#endif