The Raycasting namespace provides functions for testing ray intersections with various shapes.

Raycasting is a technique used in real-time physics simulations and games to detect collisions between objects. It involves projecting a ray from an origin point in a certain direction, and checking if it intersects with any objects in its path.

Raycasting can be used for a variety of purposes, such as detecting line-of-sight, finding the distance between two objects, and determining the surface normal of a collision. In games, it's often used to simulate realistic lighting and shadows, as well as to detect collisions between a player and the environment or other game objects.

For example, in a first-person shooter game, raycasting can be used to determine whether a bullet fired by the player hits an enemy or not. Similarly, in a racing game, it can be used to detect collisions between a player's car and other objects on the track.

Overall, raycasting is a powerful technique for simulating physics in real-time applications and games, and it has a wide range of practical uses.

Raycasting::Raycast(const Sphere& a, const Ray& ray)

Tests if a ray intersects a sphere.

Parameters:

1. a : Sphere - The sphere to test.
2. ray : Ray - The ray to test.

Returns:

1. float - The distance along the ray where the intersection occurs. If there is no intersection, returns a negative value.

Raycasting::Raycast(const AABB& aabb, const Ray& ray)

Tests if a ray intersects an axis-aligned bounding box (AABB).

Parameters:

1. aabb : AABB - The AABB to test.
2. ray : Ray - The ray to test.

Returns:

1. float - The distance along the ray where the intersection occurs. If there is no intersection, returns a negative value.

Raycasting::Raycast(const OrientedBox& obb, const Ray& ray)

Tests if a ray intersects an oriented bounding box (OBB).

Parameters:

1. obb : OrientedBox - The OBB to test.
2. ray : Ray - The ray to test.

Returns:

1. float - The distance along the ray where the intersection occurs. If there is no intersection, returns a negative value.

Raycasting::Raycast(const Plane& plane, const Ray& ray)

Tests if a ray intersects a plane.

Parameters:

1. plane : Plane - The plane to test.
2. ray : Ray - The ray to test.

Returns:

1. float - The distance along the ray where the intersection occurs. If there is no intersection, returns a negative value.

Raycasting::Raycast(const Triangle& triangle, const Ray& ray)

Tests if a ray intersects a triangle.

Parameters:

1. triangle : Triangle - The triangle to test.
2. ray : Ray - The ray to test.

Returns:

1. float - The distance along the ray where the intersection occurs. If there is no intersection, returns a negative value.

Raycasting::Raycast(const Mesh& mesh, const Ray& ray)

Tests if a ray intersects a mesh.

Parameters:

1. mesh : Mesh - The mesh to test.
2. ray : Ray - The ray to test.

Returns:

1. float - The distance along the ray where the intersection occurs. If there is no intersection, returns a negative value.

Raycasting::Raycast(const Entity& entity, const Ray& ray)

Tests if a ray intersects an entity.

Parameters:

1. entity : Entity - The entity to test.
2. ray : Ray - The ray to test.

Returns:

1. float - The distance along the ray where the intersection occurs. If there is no intersection, returns a negative value.

Tests if a line intersects a sphere.

Parameters:

1. sphere : Sphere - The sphere to test.
2. line : Line - The line to test.

Returns:

1. bool - true if the line intersects the sphere, false otherwise.

Tests if a line intersects an axis-aligned bounding box (AABB).

Parameters:

1. aabb : AABB - The AABB to test.
2. line : Line - The line to test.

Returns:

1. bool - true if the line intersects the AABB, false otherwise.

Tests if a line intersects an oriented bounding box (OBB).

Parameters:

1. obb : OrientedBox - The OBB to test.
2. line : Line - The line to test.

Returns:

1. bool - true if the line intersects the OBB, false otherwise.

Tests if a line intersects a plane.

Parameters:

1. plane : Plane - The plane to test.
2. line : Line - The line to test.

Returns:

1. bool - true if the line intersects the plane, false otherwise.

Tests if a line intersects a triangle.

Parameters:

1. triangle : Triangle - The triangle to test.
2. line : Line - The line to test.

Returns:

1. bool - true if the line intersects the triangle, false otherwise.

Tests if a line intersects a mesh.

Parameters:

1. mesh : Mesh - The mesh to test.
2. line : Line - The line to test.

Returns:

1. bool - true if the line intersects the mesh, false otherwise.

Tests if a line intersects an entity.

Parameters:

1. entity : Entity - The entity to test.
2. line : Line - The line to test.

Returns:

1. bool - true if the line intersects the entity, false otherwise.

Calculates the barycentric coordinates of a point in relation to a triangle.

Parameters:

1. p : Point - The point for which to calculate barycentric coordinates.
2. t : Triangle - The triangle to use for the calculation.

Returns:

1. Vector3 - The barycentric coordinates of the point in relation to the triangle.