/*
    PIP - Platform Independent Primitives
    Geometry
    Copyright (C) 2015  Ivan Pelipenko peri4ko@gmail.com

    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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
*/

#ifndef PIGEOMETRY_H
#define PIGEOMETRY_H

#include "pimath.h"

template<typename Type>
class PIP_EXPORT PIPoint {
public:
	Type x;
	Type y;
	
	PIPoint() {x = y = 0;};
	PIPoint(Type x_, Type y_) {set(x_, y_);}
	
	PIPoint<Type> & set(Type x_, Type y_) {x = x_; y = y_; return *this;}
	PIPoint<Type> & move(Type x_, Type y_) {x += x_; y += y_; return *this;}
	PIPoint<Type> & move(const PIPoint<Type> & p) {x += p.x; y += p.y; return *this;}
	double angleRad() const {return atan2(y, x);}
	int angleDeg() const {return round(atan2(y, x) * 180. / M_PI);}
	PIPoint<Type> toPolar(bool isDeg = false) const {return PIPoint<Type>(sqrt(x*x + y*y), isDeg ? angleDeg() : angleRad());}
	static PIPoint<Type> fromPolar(const PIPoint<Type> & p) {return PIPoint<Type>(p.y * cos(p.x), p.y * sin(p.x));}
	
	PIPoint<Type> operator +(const PIPoint<Type> & p) {return PIPoint<Type>(x + p.x, y + p.y);}
	PIPoint<Type> operator +(const Type & p) {return PIPoint<Type>(x + p, y + p);}
	PIPoint<Type> operator -(const PIPoint<Type> & p) {return PIPoint<Type>(x - p.x, y - p.y);}
	PIPoint<Type> operator -(const Type & p) {return PIPoint<Type>(x - p, y - p);}
	PIPoint<Type> operator -() {return PIPoint<Type>(-x, -y);}
	PIPoint<Type> operator *(const Type & d) {return PIPoint<Type>(x * d, y * d);}
	PIPoint<Type> operator /(const Type & d) {return PIPoint<Type>(x / d, y / d);}
	bool operator ==(const PIPoint<Type> & p) const {return (x == p.x && y == p.y);}
	bool operator !=(const PIPoint<Type> & p) const {return (x != p.x || y != p.y);}
	
};

template<typename Type>
std::ostream & operator <<(std::ostream & s, const PIPoint<Type> & v) {s << '{' << v.x << ", " << v.y << '}'; return s;}

template<typename Type>
class PIP_EXPORT PIRect {
public:
	Type x0;
	Type y0;
	Type x1;
	Type y1;
	
	PIRect() {x0 = y0 = x1 = y1 = 0;};
	PIRect(Type x, Type y, Type w, Type h) {set(x, y, w, h);}
	PIRect(const PIPoint<Type> & tl, const PIPoint<Type> & br) {set(tl.x, tl.y, br.x, br.y);}
	PIRect(const PIPoint<Type> & p0, const PIPoint<Type> & p1, const PIPoint<Type> & p2) {set(piMin<Type>(p0.x, p1.x, p2.x), piMin<Type>(p0.y, p1.y, p2.y),
																							  piMax<Type>(p0.x, p1.x, p2.x), piMax<Type>(p0.y, p1.y, p2.y));}
	
	PIRect<Type> & set(Type x, Type y, Type w, Type h) {x0 = x; y0 = y; x1 = x + w; y1 = y + h; return *this;}
	bool pointIn(Type x, Type y) const {return (x <= x1 && x >= x0 && y <= y1 && y >= y0);}
	bool pointIn(const PIPoint<Type> & p) const {return pointIn(p.x, p.y);}
	bool isEmpty() const {return (x1 - x0 == 0 && y1 - y0 == 0);}
	PIRect<Type> & translate(Type x, Type y) {x0 += x; x1 += x; y0 += y; y1 += y; return *this;}
	PIRect<Type> & translate(const PIPoint<Type> & p) {x0 += p.x; x1 += p.x; y0 += p.y; y1 += p.y; return *this;}
	PIRect<Type> translated(Type x, Type y) {PIRect<Type> r(*this); r.translate(x, y); return r;}
	PIRect<Type> translated(const PIPoint<Type> & p) {PIRect<Type> r(*this); r.translate(p); return r;}
	PIRect<Type> & scale(Type x, Type y) {setWidth(width() * x); setHeight(height() * y); return *this;}
	PIRect<Type> & scale(const PIPoint<Type> & p) {setWidth(width() * p.x); setHeight(height() * p.y); return *this;}
	PIRect<Type> scaled(Type x, Type y) {PIRect<Type> r(*this); r.scale(x, y); return r;}
	PIRect<Type> scaled(const PIPoint<Type> & p) {PIRect<Type> r(*this); r.scale(p); return r;}
	PIRect<Type> & normalize() {if (x0 > x1) piSwap<Type>(x0, x1); if (y0 > y1) piSwap<Type>(y0, y1); return *this;}
	PIRect<Type> normalized() {PIRect<Type> r(*this); r.normalize(); return r;}
	PIRect<Type> & unite(const PIRect<Type> & r) {x0 = piMin<Type>(x0, r.x0); y0 = piMin<Type>(y0, r.y0); x1 = piMax<Type>(x1, r.x1); y1 = piMax<Type>(y1, r.y1); return *this;}
	PIRect<Type> united(const PIRect<Type> & rect) {PIRect<Type> r(*this); r.unite(rect); return r;}
	PIRect<Type> & intersect(const PIRect<Type> & r) {x0 = piMax<Type>(x0, r.x0); y0 = piMax<Type>(y0, r.y0); x1 = piMin<Type>(x1, r.x1); y1 = piMin<Type>(y1, r.y1); if (x0 > x1 || y0 > y1) x0 = x1 = y0 = y1 = Type(0); return *this;}
	PIRect<Type> intersected(const PIRect<Type> & rect) {PIRect<Type> r(*this); r.intersect(rect); return r;}
	Type top() const {return y0;}
	Type left() const {return x0;}
	Type right() const {return x1;}
	Type bottom() const {return y1;}
	Type width() const {return x1 - x0;}
	Type height() const {return y1 - y0;}
	PIPoint<Type> topLeft() {return PIPoint<Type>(x0, y0);}
	PIPoint<Type> topRigth() {return PIPoint<Type>(x1, y0);}
	PIPoint<Type> bottomLeft() {return PIPoint<Type>(x0, y1);}
	PIPoint<Type> bottomRight() {return PIPoint<Type>(x1, y1);}
	void setTop(Type v) {y0 = v;}
	void setLeft(Type v) {x0 = v;}
	void setRigth(Type v) {x1 = v;}
	void setBottom(Type v) {y1 = v;}
	void setWidth(Type v) {x1 = x0 + v;}
	void setHeight(Type v) {y1 = y0 + v;}
	
	PIRect<Type> operator -() {return PIRect<Type>(-x0, -y0, -width(), -height());}
	void operator +=(Type x) {translate(x, x);}
	void operator +=(const PIPoint<Type> & p) {translate(p);}
	void operator -=(Type x) {translate(-x, -x);}
	void operator -=(const PIPoint<Type> & p) {translate(-p);}
	void operator *=(Type p) {x0 *= p; x1 *= p; y0 *= p; y1 *= p;}
	void operator /=(Type p) {x0 /= p; x1 /= p; y0 /= p; y1 /= p;}
	void operator |=(const PIRect<Type> & r) {unite(r);}
	void operator &=(const PIRect<Type> & r) {intersect(r);}
	PIRect<Type> operator +(const PIPoint<Type> & p) {return  PIRect<Type>(*this).translated(p);}
	PIRect<Type> operator -(const PIPoint<Type> & p) {return  PIRect<Type>(*this).translated(-p);}
	PIRect<Type> operator |(const PIRect<Type> & r) {return PIRect<Type>(*this).united(r);}
	PIRect<Type> operator &(const PIRect<Type> & r) {return PIRect<Type>(*this).intersected(r);}
	bool operator ==(const PIRect<Type> & r) const {return (x0 == r.x0 && y0 == r.y0 && x1 == r.x1 && y1 == r.y10);}
	bool operator !=(const PIRect<Type> & r) const {return (x0 != r.x0 || y0 != r.y0 || x1 != r.x1 || y1 != r.y10);}
	
};

template<typename Type>
std::ostream & operator <<(std::ostream & s, const PIRect<Type> & v) {s << '{' << v.x0 << ", " << v.y0 << "; " << v.x1 - v.x0 << ", " << v.y1 - v.y0 << '}'; return s;}

typedef PIPoint<int> PIPointi;
typedef PIPoint<uint> PIPointu;
typedef PIPoint<float> PIPointf;
typedef PIPoint<double> PIPointd;

typedef PIRect<int> PIRecti;
typedef PIRect<uint> PIRectu;
typedef PIRect<float> PIRectf;
typedef PIRect<double> PIRectd;

#endif // PIGEOMETRY_H
