line.hpp

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/*------------------------------- phasicFlow ---------------------------------
      O        C enter of
     O O       E ngineering and
    O   O      M ultiscale modeling of
   OOOOOOO     F luid flow       
------------------------------------------------------------------------------
  Copyright (C): www.cemf.ir
  email: hamid.r.norouzi AT gmail.com
------------------------------------------------------------------------------  
Licence:
  This file is part of phasicFlow code. It is a free software for simulating 
  granular and multiphase flows. You can redistribute it and/or modify it under
  the terms of GNU General Public License v3 or any other later versions. 
 
  phasicFlow is distributed to help others in their research in the field of 
  granular and multiphase flows, but WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
-----------------------------------------------------------------------------*/
 
 
#ifndef __line_hpp__
#define __line_hpp__
 
#include "types.hpp"
#include "typeInfo.hpp"
 
namespace pFlow
{
 
 
class dictionary;
 
 
// pLine 
class line
{
protected:
    
    // point 1
    realx3 p1_;
 
    // vector pointing from 1 to 2
    realx3 v21_; 
 
public:
 
    TypeInfoNV("line");
 
        FUNCTION_HD
        line()
        {}
 
        FUNCTION_HD
        line(const realx3 &lp1, const realx3 &lp2);
 
        FUNCTION_H
        line(const dictionary& dict);
 
        FUNCTION_HD
        line(const line& src) = default;
 
        FUNCTION_HD
        line(line&& src) = default;
 
        FUNCTION_HD
        line& operator = (const line&) = default;
 
        FUNCTION_HD
        line& operator = (line&&) = default;
 
    
        
        // set two points of line 
        INLINE_FUNCTION_HD
        void set(const realx3 &lp1, const realx3 &lp2)
        {
            v21_ = lp2 - lp1;
            p1_ = lp1;
        }
 
        // return point 1
        INLINE_FUNCTION_HD
        realx3 point1()const { return p1_; }
 
        // return point 2
        INLINE_FUNCTION_HD
        realx3 point2()const { return point(1.0); }
 
        // get a point on the line based on input  0<= t <= 1
        INLINE_FUNCTION_HD
        realx3 point(real t)const  { return v21_ * t + p1_; }
 
        // length of line 
        INLINE_FUNCTION_HD
        real length()const { return pFlow::length(v21_); }
 
        // get unit vector of the line direction vector  
        INLINE_FUNCTION_HD
        realx3 unitVector() const{ return normalize(v21_); }
 
        // return the projected point of point p on line
        INLINE_FUNCTION_HD
        realx3 projectPoint(const realx3 &p) const
        {
            return point(projectNormalizedLength(p));
        }
 
        // calculates the normalized distance between projected p and p1 
        INLINE_FUNCTION_HD
        real projectNormalizedLength(realx3 p) const 
        {
            realx3 w = p - p1_;
            return dot(w,v21_) / dot(v21_,v21_);
        }
 
        FUNCTION_H
        bool read(const dictionary& dict);
 
        FUNCTION_H
        bool write(dictionary& ditc) const;
        
        FUNCTION_H
        bool read(iIstream& is);
 
        FUNCTION_H
        bool write(iOstream& os)const;
 
 
};
 
 
}
 
 
#endif //