Modules_CPP/Module_02/ex03/srcs/bsp.cpp

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   bsp.cpp                                            :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bchanot <bchanot@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/07/18 19:15:01 by Bastien Cha       #+#    #+#             */
/*   Updated: 2025/12/18 13:11:51 by bchanot          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "Point.class.hpp"
#include <iostream>

Fixed   orient(Point const & a, Point const & b, Point const & p) {
        return (b.getX() - a.getX()) * (p.getY() - a.getY()) - (b.getY() - a.getY()) * (p.getX() - a.getX());
}

bool    bsp(Point const & a, Point const & b, Point const & c, Point const & point) {
    Fixed o1, o2, o3;

    o1 = orient(a, b, point);
    o2 = orient(b, c, point);
    o3 = orient(c, a, point);

    if ((o1 > 0 && o2 > 0 && o3 > 0) || (o1 < 0 && o2 < 0 && o3 < 0))
        return true;
    return false;
}