qvector.h

 
/************************************************************************************
 * MIT License
 *
 * Copyright (c) 2023 Eray Zesen
 *
 * 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.
 *
 * https://github.com/erayzesen/QuarkPhysics
 *
**************************************************************************************/
 
#ifndef QVECTOR_H
#define QVECTOR_H
#include <cmath>
#include <ostream>
#include "qmath_utils.h"
 
using namespace std;
 
enum QSides{
    UP,
    RIGHT,
    DOWN,
    LEFT,
    NONE
};
 
struct QVector{
public:
    QVector(){
        QVector(0,0);
    };
    QVector(float px, float py){
        x=px;
        y=py;
    };
    float x=0;
 
    float y=0;
 
    static QVector Up(){
        return QVector(0.0f,-1.0f);
    };
    static QVector Right(){
        return QVector(1.0f,0.0f);
    };
    static QVector Down(){
        return QVector(0.0f,1.0f);
    };
    static QVector Left(){
        return QVector(-1.0f,0.0f);
    };
    static QVector Zero(){
        return QVector(-0.0f,0.0f);
    };
 
    static QVector NaN(){
        return QVector(NAN,NAN);
    };
 
 
 
 
    //Math Operations
    QVector &operator +=(const QVector &other) {
        this->x+=other.x;
        this->y+=other.y;
        return *this;
    };
    friend QVector operator +(const QVector pointA, const QVector pointB){
        return QVector(pointA.x+pointB.x,pointA.y+pointB.y);
    }
 
    QVector &operator /=(const QVector &other) {
        this->x/=other.x;
        this->y/=other.y;
        return *this;
    };
    QVector &operator /=(const float &value) {
        this->x/=value;
        this->y/=value;
        return *this;
    };
    friend QVector operator /(const QVector pointA,const QVector pointB){
        return QVector(pointA.x/pointB.x,pointA.y/pointB.y);
    }
    friend QVector operator /(const float value,const QVector point){
        return QVector(point.x/value,point.y/value);
    }
    friend QVector operator /(const QVector point,const float value){
        return QVector(point.x/value,point.y/value);
    }
    QVector &operator *=(const QVector &other){
        this->x*=other.x;
        this->y*=other.y;
        return *this;
    };
 
    QVector &operator *=(const float &value) {
        this->x*=value;
        this->y*=value;
        return *this;
    };
    friend QVector operator *(const QVector point, const float value){
        return QVector(point.x*value,point.y*value);
    }
    friend QVector operator *(const float value,const QVector point){
        return QVector(point.x*value,point.y*value);
    }
    QVector &operator -=(const QVector &other) {
        this->x-=other.x;
        this->y-=other.y;
        return *this;
    };
    QVector operator -() const {
        return QVector(-x,-y);
    };
    friend QVector operator -(const QVector pointA, const QVector pointB){
        return QVector(pointA.x-pointB.x,pointA.y-pointB.y);
    }
 
    bool operator ==(const QVector &other) const {
        return x==other.x && y==other.y;
    };
    bool operator !=(const QVector &other) const {
        return !(x==other.x && y==other.y);
    };
 
 
 
    friend ostream& operator<<(ostream& os,QVector const & point){
        return os<<"QVector("<< point.x<<","<<point.y<<")";
    }
 
    //Methods
 
    QVector Rotated(float radianAngle) const;
    static QVector AngleToUnitVector(const float radianAngle);
    static float AngleBetweenTwoVectors(QVector vector,QVector referenceVector);
    static QSides GetVectorSide(QVector vector,QVector referenceUpVector,float maxAngleDefiningSide=0.785398f);
    static QVector GeteBisectorUnitVector(QVector pointA,QVector pointB,QVector pointC,bool checkPointsAreCCW=false);
 
    //Operations
 
    inline float Dot(QVector with) const{
        return (x*with.x)+(y*with.y);
    }
    inline float Length() const {
        return sqrt(x*x+y*y);
    }
    inline QVector Normalized() const {
        if(x==0 && y==0)
            return QVector::Zero();
        float lsqrt=LengthSquared();
        if(lsqrt==0)
            return QVector::Zero();
        float l=sqrt(lsqrt);
        return QVector(x/l,y/l);
    }
    inline QVector Perpendicular() const {
        return QVector(y,-x);
    }
    inline float LengthSquared()const {
        return (x*x)+(y*y);
    }
 
    inline bool isNaN() const{
        if(isnan(x) && isnan(y) ){
            return true;
        }
        return false;
    }
 
 
 
 
};
 
#endif // QVECTOR_H