4jcraft/Minecraft.World/Util/Vec3.h

#pragma once

class AABB;

class Vec3 {
    // 4J added so we can have separate pools for different threads
    class ThreadStorage {
    public:
        static const int POOL_SIZE = 1024;
        Vec3* pool;
        unsigned int poolPointer;
        ThreadStorage();
        ~ThreadStorage();
    };
    static unsigned int tlsIdx;
    static ThreadStorage* tlsDefault;

public:
    // Each new thread that needs to use Vec3 pools will need to call one of the
    // following 2 functions, to either create its own local storage, or share
    // the default storage already allocated by the main thread
    static void CreateNewThreadStorage();
    static void UseDefaultThreadStorage();
    static void ReleaseThreadStorage();

    static Vec3* newPermanent(double x, double y, double z);
    static void clearPool();
    static void resetPool();
    static Vec3* newTemp(double x, double y, double z);
    double x, y, z;

private:
    Vec3() {}
    Vec3(double x, double y, double z);
    Vec3* set(double x, double y, double z);

public:
    Vec3* interpolateTo(Vec3* t, double p);
    Vec3* vectorTo(Vec3* p);
    Vec3* normalize();
    double dot(Vec3* p);
    Vec3* cross(Vec3* p);
    Vec3* add(double x, double y, double z);
    double distanceTo(Vec3* p);
    double distanceToSqr(Vec3* p);
    double distanceToSqr(double x2, double y2, double z2);
    Vec3* scale(double l);
    double length();
    Vec3* clipX(Vec3* b, double xt);
    Vec3* clipY(Vec3* b, double yt);
    Vec3* clipZ(Vec3* b, double zt);
    std::wstring toString();
    Vec3* lerp(Vec3* v, double a);
    void xRot(float degs);
    void yRot(float degs);
    void zRot(float degs);

    // 4J Added
    double distanceTo(AABB* box);

    Vec3* closestPointOnLine(Vec3* p1, Vec3* p2);
    double distanceFromLine(Vec3* p1, Vec3* p2);
};