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/* graphene-ray.h: A ray emitted from an origin in a given direction
*
* SPDX-License-Identifier: MIT
*
* Copyright 2015 Emmanuele Bassi
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#pragma once
#if !defined(GRAPHENE_H_INSIDE) && !defined(GRAPHENE_COMPILATION)
#error "Only graphene.h can be included directly."
#endif
#include "graphene-types.h"
#include "graphene-vec3.h"
GRAPHENE_BEGIN_DECLS
/**
* graphene_ray_t:
*
* A ray emitted from an origin in a given direction.
*
* The contents of the `graphene_ray_t` structure are private, and should not
* be modified directly.
*
* Since: 1.4
*/
struct _graphene_ray_t
{
/*< private >*/
GRAPHENE_PRIVATE_FIELD (graphene_vec3_t, origin);
GRAPHENE_PRIVATE_FIELD (graphene_vec3_t, direction);
};
/**
* graphene_ray_intersection_kind_t:
* @GRAPHENE_RAY_INTERSECTION_KIND_NONE: No intersection
* @GRAPHENE_RAY_INTERSECTION_KIND_ENTER: The ray is entering the intersected
* object
* @GRAPHENE_RAY_INTERSECTION_KIND_LEAVE: The ray is leaving the intersected
* object
*
* The type of intersection.
*
* Since: 1.10
*/
typedef enum {
GRAPHENE_RAY_INTERSECTION_KIND_NONE,
GRAPHENE_RAY_INTERSECTION_KIND_ENTER,
GRAPHENE_RAY_INTERSECTION_KIND_LEAVE,
} graphene_ray_intersection_kind_t;
GRAPHENE_AVAILABLE_IN_1_4
graphene_ray_t * graphene_ray_alloc (void);
GRAPHENE_AVAILABLE_IN_1_4
void graphene_ray_free (graphene_ray_t *r);
GRAPHENE_AVAILABLE_IN_1_4
graphene_ray_t * graphene_ray_init (graphene_ray_t *r,
const graphene_point3d_t *origin,
const graphene_vec3_t *direction);
GRAPHENE_AVAILABLE_IN_1_4
graphene_ray_t * graphene_ray_init_from_ray (graphene_ray_t *r,
const graphene_ray_t *src);
GRAPHENE_AVAILABLE_IN_1_4
graphene_ray_t * graphene_ray_init_from_vec3 (graphene_ray_t *r,
const graphene_vec3_t *origin,
const graphene_vec3_t *direction);
GRAPHENE_AVAILABLE_IN_1_4
void graphene_ray_get_origin (const graphene_ray_t *r,
graphene_point3d_t *origin);
GRAPHENE_AVAILABLE_IN_1_4
void graphene_ray_get_direction (const graphene_ray_t *r,
graphene_vec3_t *direction);
GRAPHENE_AVAILABLE_IN_1_4
void graphene_ray_get_position_at (const graphene_ray_t *r,
float t,
graphene_point3d_t *position);
GRAPHENE_AVAILABLE_IN_1_4
float graphene_ray_get_distance_to_point (const graphene_ray_t *r,
const graphene_point3d_t *p);
GRAPHENE_AVAILABLE_IN_1_4
float graphene_ray_get_distance_to_plane (const graphene_ray_t *r,
const graphene_plane_t *p);
GRAPHENE_AVAILABLE_IN_1_4
bool graphene_ray_equal (const graphene_ray_t *a,
const graphene_ray_t *b);
GRAPHENE_AVAILABLE_IN_1_4
void graphene_ray_get_closest_point_to_point (const graphene_ray_t *r,
const graphene_point3d_t *p,
graphene_point3d_t *res);
GRAPHENE_AVAILABLE_IN_1_10
graphene_ray_intersection_kind_t graphene_ray_intersect_sphere (const graphene_ray_t *r,
const graphene_sphere_t *s,
float *t_out);
GRAPHENE_AVAILABLE_IN_1_10
bool graphene_ray_intersects_sphere (const graphene_ray_t *r,
const graphene_sphere_t *s);
GRAPHENE_AVAILABLE_IN_1_10
graphene_ray_intersection_kind_t graphene_ray_intersect_box (const graphene_ray_t *r,
const graphene_box_t *b,
float *t_out);
GRAPHENE_AVAILABLE_IN_1_10
bool graphene_ray_intersects_box (const graphene_ray_t *r,
const graphene_box_t *b);
GRAPHENE_AVAILABLE_IN_1_10
graphene_ray_intersection_kind_t graphene_ray_intersect_triangle (const graphene_ray_t *r,
const graphene_triangle_t *t,
float *t_out);
GRAPHENE_AVAILABLE_IN_1_10
bool graphene_ray_intersects_triangle (const graphene_ray_t *r,
const graphene_triangle_t *t);
GRAPHENE_END_DECLS