#pragma once

#include <iostream>

//一个假的点类型

struct Vector3

{

    float x;

    float y;

    float z;

};

class AABB

{

public:

    AABB();

    AABB(const AABB &aabb);

    ~AABB();

    void add(const Vector3 &v);

    void clear();

    void makeAABB(Vector3 V[], int n);

    Vector3 min, max, center;

};

void aabbPrint(AABB &ab);

#include "AABB.h"

AABB::AABB()

{

}

AABB::AABB(const AABB &aabb)

{

    min = aabb.min;

    max = aabb.max;

    center = aabb.center;

}

void AABB::clear()

{

    min.x = min.y = min.z = FLT_MAX;

    //careful: This is not FLT_MIN, 'cause FLT_MIN is a little larger than 0,

    //hence not a minus value.

    max.x = max.y = max.z = -FLT_MAX;

}

void AABB::add(const Vector3 &v)

{

    if (v.x < min.x) min.x = v.x;

    if (v.y < min.y) min.y = v.y;

    if (v.z < min.z) min.z = v.z;

    if (v.x > max.x) max.x = v.x;

    if (v.y > max.y) max.y = v.y;

    if (v.z > max.z) max.z = v.z;

}

//make AABB out of Vector3 points

void AABB::makeAABB(Vector3 V[], int n)

{

    if (!V) return;

    for (int i = ; i < n; i++)

        add(V[i]);

    center.x = (min.x + max.x) * 0.5f;

    center.y = (min.y + max.y) * 0.5f;

    center.z = (min.z + max.z) * 0.5f;

}

AABB::~AABB()

{

}

void aabbPrint(AABB &ab)

{

    std::cout<<"AABB min is: ";

    ab.min.x;

    ab.min.y;

    ab.min.z;

    std::cout<<"AABB max is: ";

    ab.max.x;

    ab.max.y;

    ab.max.z;

    std::cout<<std::endl;

}