/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   maths_plane.c                                      :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: gbrochar <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/02/08 19:57:48 by gbrochar          #+#    #+#             */
/*   Updated: 2019/02/08 20:47:52 by gbrochar         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "rtv1.h"

double					intersect_plane(void *obj, t_ray r)
{
	t_plane				*p;

	p = (t_plane *)obj;
	if (dot_product(r.d, p->d) != 0)
	{
		return (-dot_product(vec_sub(r.o, p->o), p->d)
				/ dot_product(r.d, p->d) - E);
	}
	return (FAILURE);
}

t_vec					normal_plane(void *obj, t_ray r, double t)
{
	t_plane				*p;

	(void)r;
	(void)t;
	p = (t_plane *)obj;
	return (p->d);
}