graphene_ray_alloc ()

graphene_ray_t *
graphene_ray_alloc (void);

Allocates a new graphene_ray_t structure.

The contents of the returned structure are undefined.

[constructor]

Since: 1.4

graphene_ray_free ()

void
graphene_ray_free (graphene_ray_t *r);

Frees the resources allocated by graphene_ray_alloc().

Since: 1.4

graphene_ray_init ()

graphene_ray_t *
graphene_ray_init (graphene_ray_t *r,
                   const graphene_point3d_t *origin,
                   const graphene_vec3_t *direction);

Initializes the given graphene_ray_t using the given origin and direction values.

Since: 1.4

graphene_ray_init_from_ray ()

graphene_ray_t *
graphene_ray_init_from_ray (graphene_ray_t *r,
                            const graphene_ray_t *src);

Initializes the given graphene_ray_t using the origin and direction values of another graphene_ray_t.

Since: 1.4

graphene_ray_init_from_vec3 ()

graphene_ray_t *
graphene_ray_init_from_vec3 (graphene_ray_t *r,
                             const graphene_vec3_t *origin,
                             const graphene_vec3_t *direction);

Initializes the given graphene_ray_t using the given vectors.

Since: 1.4

graphene_ray_get_origin ()

void
graphene_ray_get_origin (const graphene_ray_t *r,
                         graphene_point3d_t *origin);

Retrieves the origin of the given graphene_ray_t.

Since: 1.4

graphene_ray_get_direction ()

void
graphene_ray_get_direction (const graphene_ray_t *r,
                            graphene_vec3_t *direction);

Retrieves the direction of the given graphene_ray_t.

Since: 1.4

graphene_ray_get_position_at ()

void
graphene_ray_get_position_at (const graphene_ray_t *r,
                              float t,
                              graphene_point3d_t *position);

Retrieves the coordinates of a point at the distance t along the given graphene_ray_t.

Since: 1.4

graphene_ray_get_distance_to_point ()

float
graphene_ray_get_distance_to_point (const graphene_ray_t *r,
                                    const graphene_point3d_t *p);

Computes the distance of the closest approach between the given graphene_ray_t r and the point p .

The closest approach to a ray from a point is the distance between the point and the projection of the point on the ray itself.

Since: 1.4

graphene_ray_get_distance_to_plane ()

float
graphene_ray_get_distance_to_plane (const graphene_ray_t *r,
                                    const graphene_plane_t *p);

Computes the distance of the origin of the given graphene_ray_t from the given plane.

If the ray does not intersect the plane, this function returns INFINITY.

Since: 1.4

graphene_ray_get_closest_point_to_point ()

void
graphene_ray_get_closest_point_to_point
                               (const graphene_ray_t *r,
                                const graphene_point3d_t *p,
                                graphene_point3d_t *res);

Computes the point on the given graphene_ray_t that is closest to the given point p .

Since: 1.4

graphene_ray_equal ()

bool
graphene_ray_equal (const graphene_ray_t *a,
                    const graphene_ray_t *b);

Checks whether the two given graphene_ray_t are equal.

Since: 1.4

graphene_ray_intersect_sphere ()

graphene_ray_intersection_kind_t
graphene_ray_intersect_sphere (const graphene_ray_t *r,
                               const graphene_sphere_t *s,
                               float *t_out);

Intersects the given graphene_ray_t r with the given graphene_sphere_t s .

Since: 1.10

graphene_ray_intersects_sphere ()

bool
graphene_ray_intersects_sphere (const graphene_ray_t *r,
                                const graphene_sphere_t *s);

Checks if the given graphene_ray_t r intersects the given graphene_sphere_t s .

See also: graphene_ray_intersect_sphere()

Since: 1.10

graphene_ray_intersect_box ()

graphene_ray_intersection_kind_t
graphene_ray_intersect_box (const graphene_ray_t *r,
                            const graphene_box_t *b,
                            float *t_out);

Intersects the given graphene_ray_t r with the given graphene_box_t b .

Since: 1.10

graphene_ray_intersects_box ()

bool
graphene_ray_intersects_box (const graphene_ray_t *r,
                             const graphene_box_t *b);

Checks whether the given graphene_ray_t r intersects the given graphene_box_t b .

See also: graphene_ray_intersect_box()

Since: 1.10

graphene_ray_intersect_triangle ()

graphene_ray_intersection_kind_t
graphene_ray_intersect_triangle (const graphene_ray_t *r,
                                 const graphene_triangle_t *t,
                                 float *t_out);

Intersects the given graphene_ray_t r with the given graphene_triangle_t t .

Since: 1.10

graphene_ray_intersects_triangle ()

bool
graphene_ray_intersects_triangle (const graphene_ray_t *r,
                                  const graphene_triangle_t *t);

Checks whether the given graphene_ray_t r intersects the given graphene_triangle_t b .

See also: graphene_ray_intersect_triangle()

Since: 1.10

graphene_ray_t

typedef struct {
} 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

enum graphene_ray_intersection_kind_t

The type of intersection.

Since: 1.10