Rectangle.h

/*
 
MIT License
 
Copyright (c) 2017 FMI Open Development / Markus Peura, first.last@fmi.fi
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
 
*/
/*
Part of Rack development has been done in the BALTRAD projects part-financed
by the European Union (European Regional Development Fund and European
Neighbourhood Partnership Instrument, Baltic Sea Region Programme 2007-2013)
*/
/*
 * Rectangle.h
 *
 *  Created on: Sep 9, 2010
 *      Author: mpeura
 */
 
#ifndef DRAIN_RECTANGLE2_H_
#define DRAIN_RECTANGLE2_H_
 
//#include <ostream>
#include <drain/UniTuple.h>
#include <cmath>
#include <vector>
 
#include <drain/util/Point.h>
#include <drain/Type.h>
// using namespace std;
 
 
namespace drain {
 
 
 
 
 
template <class T>
struct Rectangle : public drain::UniTuple<T,4> {
 
    Point2D<T> lowerLeft;
    Point2D<T> upperRight;
    // consider Range<T> x, Range<T> y,
 
    Rectangle(T x=0, T y=0, T x2=0, T y2=0) : lowerLeft(this->tuple(), 0), upperRight(this->tuple(), 2) {
        this->set(x, y, x2, y2);
    }
 
    Rectangle(const Rectangle & r) : lowerLeft(this->tuple(), 0), upperRight(this->tuple(), 2){
        this->assignSequence(r);
    };
 
    Rectangle(const Point2D<T> & ll, const Point2D<T> & ur) : lowerLeft(this->tuple(), 0), upperRight(this->tuple(), 2){
        lowerLeft.setLocation(ll);
        upperRight.setLocation(ur);
    };
 
 
    Rectangle<T> & operator=(const Rectangle<T> & rect){
        this->set(rect.tuple());
        return *this;
    }
 
    inline
    T getWidth() const { return (this->upperRight.x - this->lowerLeft.x); };
 
    inline
    T getHeight() const {
        return (this->upperRight.y - this->lowerLeft.y);
    };
 
    inline
    T getArea() const {
        return std::abs(getWidth()*getHeight());
    };
 
    inline
    bool empty() const {
        return (getWidth()==0) || (getHeight()==0);
    };
 
 
    inline
    void getCenter(drain::Point2D<T> &p) const {
        const T divider = 2;
        p.x = (lowerLeft.x + upperRight.x)/divider;
        p.y = (lowerLeft.y + upperRight.y)/divider;
        // p.x = static_cast<T>((lowerLeft.x + upperRight.x)/2.0);
        // p.y = static_cast<T>((lowerLeft.y + upperRight.y)/2.0);
    };
 
 
 
    bool crop(const Rectangle<T> & r);
 
    void extend(const Rectangle & r);
 
    void contract(const Rectangle & r);
 
 
    inline
    bool isInside(const T &x,const T &y) const {
        return ((x>this->lowerLeft.x) && (x<this->upperRight.x) && (y>this->lowerLeft.y) && (y<this->upperRight.y));
    };
 
    inline
    bool isOverLapping(const Rectangle &r) const {
        const bool xOverLap = !((r.upperRight.x < this->lowerLeft.x) || (r.lowerLeft.x > this->upperRight.x));
        const bool yOverLap = !((r.upperRight.y < this->lowerLeft.y) || (r.lowerLeft.y > this->upperRight.y));
        return (xOverLap && yOverLap);
    };
 
    inline
    std::vector<T> toVector() const {
        std::vector<T> v;
        UniTuple<T,4>::toSequence(v);
        return v;
    }
 
 
protected:
 
    inline
    bool limit(const T & lowerBound, const T & upperBound, T & x){
 
        if (lowerBound > upperBound){
            return limit(upperBound, lowerBound, x);
            //return true;
        }
 
        if (x < lowerBound){
            x = lowerBound;
            return true;
        }
        else if (x > upperBound){
            x = upperBound;
            return true;
        }
 
        return false;
    }
 
};
 
 
template <class T>
bool Rectangle<T>::crop(const Rectangle<T> & r){
    const Rectangle<T> bounds(*this);
    bool result = false;
    *this = r;
    result |= limit(bounds.lowerLeft.x, bounds.upperRight.x, this->lowerLeft.x);
    result |= limit(bounds.lowerLeft.x, bounds.upperRight.x, this->upperRight.x);
    result |= limit(bounds.lowerLeft.y, bounds.upperRight.y, this->lowerLeft.y);
    result |= limit(bounds.lowerLeft.y, bounds.upperRight.y, this->upperRight.y);
    return result;
}
 
 
template <class T>
void Rectangle<T>::extend(const Rectangle<T> & r)
{
    this->lowerLeft.x  = std::min(this->lowerLeft.x,r.lowerLeft.x);
    this->lowerLeft.y  = std::min(this->lowerLeft.y,r.lowerLeft.y);
    this->upperRight.x = std::max(this->upperRight.x,r.upperRight.x);
    this->upperRight.y = std::max(this->upperRight.y,r.upperRight.y);
}
 
 
template <class T>
void Rectangle<T>::contract(const Rectangle<T> & r)
{
    this->lowerLeft.x  = std::max(this->lowerLeft.x,r.lowerLeft.x);
    this->lowerLeft.y  = std::max(this->lowerLeft.y,r.lowerLeft.y);
    this->upperRight.x = std::min(this->upperRight.x,r.upperRight.x);
    this->upperRight.y = std::min(this->upperRight.y,r.upperRight.y);
}
 
 
template <class T>
std::ostream & operator<<(std::ostream &ostr,const drain::Rectangle<T> &r){
    ostr << r.lowerLeft.x << ',' << r.lowerLeft.y << ' ' <<  r.upperRight.x << ',' << r.upperRight.y;
    return ostr;
}
 
// template <class T>
// DRAIN_TYPENAME_DEF(Rectangle<T>, T);
 
DRAIN_TYPENAME_T(Rectangle,T);
 
/*
template <class T>
struct TypeName<Rectangle<T> > {
    static const std::string & str(){
        static const std::string name = drain::StringBuilder<>("Rectangle<", drain::TypeName<T>::str(), ">");
        return name;
    }
};
*/
 
//const std::string TypeName<tname>::name(#
 
} // namespace drain
 
/*
template <class T>
std::ostream & operator<<(std::ostream &ostr,const drain::Rectangle<T> &r){
    ostr << r.lowerLeft.x << ',' << r.lowerLeft.y << ' ' <<  r.upperRight.x << ',' << r.upperRight.y;
    return ostr;
}
*/
 
 
 
 
 
#endif /* RECTANGLE_H_ */
 
// Drain