qaabb.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 QAABB_H
#define QAABB_H
#include "qvector.h"
 
 
class QAABB
{
    QVector minPos;
    QVector maxPos;
    QVector size;
    float volume;
    static float multiplier;
public:
 
 
    QAABB(){
        QAABB(minPos,maxPos);
    }
 
    QAABB(QVector minPosition, QVector maxPosition ){
        minPos=minPosition;
        maxPos=maxPosition;
        size=maxPos-minPos;
        volume=size.x*size.y;
    };
 
    //General Get Methods
    QVector GetMin(){
        return minPos;
    }
    QVector GetMax(){
        return maxPos;
    }
    QVector GetSize(){
        return size;
    }
 
 
    //General Set Methods
 
 
 
    QAABB * SetMinMax(QVector minPosition,QVector maxPosition){
        minPos=minPosition;
        maxPos=maxPosition;
        size=maxPos-minPos;
        volume=size.x*size.y;
        return this;
    }
 
 
    float GetPerimeter() const{
        return 2.0f*(size.x+size.y);
    }
 
    float GetArea()const{
        return size.x*size.y;
    }
 
    QVector GetCenterPosition()const {
        return (minPos+maxPos)*0.5f;
    }
 
    float GetVolume() const{
        return volume;
    }
 
    double isContain(const QAABB& otherAABB) const {
        return (minPos.x <= otherAABB.minPos.x) &&
            (minPos.y <= otherAABB.minPos.y) &&
            (maxPos.x >= otherAABB.maxPos.x) &&
            (maxPos.y >= otherAABB.maxPos.y);
    }
    static QAABB Combine( QAABB &b1, QAABB &b2){
        QAABB output=QAABB();
        float minX=b1.minPos.x<b2.minPos.x ? b1.minPos.x : b2.minPos.x;
        float minY=b1.minPos.y<b2.minPos.y ? b1.minPos.y : b2.minPos.y;
 
        float maxX=b1.maxPos.x>b2.maxPos.x ? b1.maxPos.x : b2.maxPos.x;
        float maxY=b1.maxPos.y>b2.maxPos.y ? b1.maxPos.y : b2.maxPos.y;
        output.SetMinMax(QVector(minX,minY),QVector(maxX,maxY) );
        return output;
    };
 
    void Fatten(float amount){
        QVector amountVec=QVector(amount,amount);
        SetMinMax(minPos-amountVec,maxPos+amountVec);
    }
 
    QAABB Fattened(float amount)const{
        QVector amountVec=QVector(amount,amount);
        return QAABB(minPos-amountVec,maxPos+amountVec);
 
    }
 
    QAABB FattenedWithRate(float rate)const{
        QVector ratedSize=size*rate*0.5f;
        return QAABB(minPos-ratedSize,maxPos+ratedSize);
    }
 
    bool isCollidingWith(const QAABB& otherAABB) const {
        return maxPos.x >= otherAABB.minPos.x && minPos.x <= otherAABB.maxPos.x &&
            maxPos.y >= otherAABB.minPos.y && minPos.y <= otherAABB.maxPos.y;
    }
 
 
 
};
 
#endif // QAABB_H