/* ************************************************************************** */
/*                                                                            */
/*                                                        ::::::::            */
/*   bsp.cpp                                            :+:    :+:            */
/*                                                     +:+                    */
/*   By: whaffman <whaffman@student.codam.nl>         +#+                     */
/*                                                   +#+                      */
/*   Created: 2025/03/27 16:01:44 by whaffman      #+#    #+#                 */
/*   Updated: 2025/03/27 16:07:02 by whaffman      ########   odam.nl         */
/*                                                                            */
/* ************************************************************************** */

#include "Point.hpp"
#include "Fixed.hpp"
#include "bsp.h"

Fixed crossproduct(Point a, Point b, Point c)
{
	Fixed x1 = b.x() - a.x();
	Fixed y1 = b.y() - a.y();
	Fixed x2 = c.x() - a.x();
	Fixed y2 = c.y() - a.y();
	return (x1 * y2 - x2 * y1);
}
bool bsp(Point a, Point b, Point c, Point point)
{
	Fixed res1 = crossproduct(a, b, point);
	Fixed res2 = crossproduct(b, c, point);
	Fixed res3 = crossproduct(c, a, point);
	if ((res1 >= 0 && res2 >= 0 && res3 >= 0) || (res1 <= 0 && res2 <= 0 && res3 <= 0))
		return true;
	return false;
}