Ray

Added in version 1.4.

class Ray(*args, **kwargs)

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.

Constructors

class Ray

classmethod alloc() → Ray

Allocates a new Ray structure.

The contents of the returned structure are undefined.

Added in version 1.4.

Methods

class Ray

equal(b: Ray) → bool

Checks whether the two given Ray are equal.

Added in version 1.4.

Parameters:

b – a Ray

free() → None

Frees the resources allocated by alloc().

Added in version 1.4.

get_closest_point_to_point(p: Point3D) → Point3D

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

Added in version 1.4.

Parameters:

p – a Point3D

get_direction() → Vec3

Retrieves the direction of the given Ray.

Added in version 1.4.

get_distance_to_plane(p: Plane) → float

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

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

Added in version 1.4.

Parameters:

p – a Plane

get_distance_to_point(p: Point3D) → float

Computes the distance of the closest approach between the given Ray 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.

Added in version 1.4.

Parameters:

p – a Point3D

get_origin() → Point3D

Retrieves the origin of the given Ray.

Added in version 1.4.

get_position_at(t: float) → Point3D

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

Added in version 1.4.

Parameters:

t – the distance along the ray

init(origin: Point3D | None = None, direction: Vec3 | None = None) → Ray

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

Added in version 1.4.

Parameters:

• origin – the origin of the ray

• direction – the direction vector

init_from_ray(src: Ray) → Ray

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

Added in version 1.4.

Parameters:

src – a Ray

init_from_vec3(origin: Vec3 | None = None, direction: Vec3 | None = None) → Ray

Initializes the given Ray using the given vectors.

Added in version 1.4.

Parameters:

• origin – a Vec3

• direction – a Vec3

intersect_box(b: Box) → Tuple[RayIntersectionKind, float]

Intersects the given Ray r with the given Box b.

Added in version 1.10.

Parameters:

b – a Box

intersect_sphere(s: Sphere) → Tuple[RayIntersectionKind, float]

Intersects the given Ray r with the given Sphere s.

Added in version 1.10.

Parameters:

s – a Sphere

intersect_triangle(t: Triangle) → Tuple[RayIntersectionKind, float]

Intersects the given Ray r with the given Triangle t.

Added in version 1.10.

Parameters:

t – a Triangle

intersects_box(b: Box) → bool

Checks whether the given Ray r intersects the given Box b.

See also: intersect_box()

Added in version 1.10.

Parameters:

b – a Box

intersects_sphere(s: Sphere) → bool

Checks if the given Ray r intersects the given Sphere s.

See also: intersect_sphere()

Added in version 1.10.

Parameters:

s – a Sphere

intersects_triangle(t: Triangle) → bool

Checks whether the given Ray r intersects the given Triangle b.

See also: intersect_triangle()

Added in version 1.10.

Parameters:

t – a Triangle

Fields

class Ray

direction

origin