#include "client/math/Camera.h"
#include "client/Utils.h"

Camera::Camera(const Ray& ray) : ray(ray) {
}

const Vector& Camera::getBack() const {
    return back;
}

const Vector& Camera::getRight() const {
    return right;
}

const Vector& Camera::getUp() const {
    return up;
}

const Vector& Camera::getFlatBack() const {
    return flatBack;
}

const Vector& Camera::getFlatRight() const {
    return flatRight;
}

const Vector& Camera::getFlatUp() const {
    return flatUp;
}

const Vector& Camera::getPosition() const {
    return position;
}

void Camera::update(float lag) {
    back = ray.getDirection(lag);
    right.setInverse(back).cross(0.0f, 1.0f, 0.0f).normalize();
    up.set(back).cross(right).normalize();
    
    flatBack.set(back).setY(0.0f).normalize();
    flatRight.setInverse(back).cross(0.0f, 1.0f, 0.0f).normalize();
    flatUp.set(0.0f, 1.0f, 0.0f);
    
    position = ray.getPosition(lag);
}