raycast.hpp File Reference

Raycast Implmentation mostly from https://iquilezles.org/articles/intersectors/ and https://www.realtimerendering.com/intersections.html. More...

#include "body.hpp"
#include "shape.hpp"
#include "toast/world/box.hpp"
#include <glm/glm.hpp>
#include <optional>
#include <vector>

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Classes
struct	physics::RayHit
struct	physics::SphereHit

Functions
auto	physics::raycast (glm::vec3 origin, glm::vec3 direction, float max_distance, BodyID ignored, const std::vector< int > &layers) -> std::optional< RayHit >
auto	physics::raymulticast (glm::vec3 origin, glm::vec3 direction, float max_distance, int max_hits, BodyID ignored, const std::vector< int > &layers) -> std::vector< RayHit >
auto	physics::linecast (glm::vec3 from, glm::vec3 to, int max_hits, BodyID ignored, const std::vector< int > &layers) -> std::vector< RayHit >
auto	physics::sphereOverlap (glm::vec3 position, float radius) -> std::optional< SphereHit >
auto	physics::overlapAABB (glm::vec3 min, glm::vec3 max) -> bool
	Tests a world-space axis-aligned box against enabled physics shapes.

Detailed Description

Raycast Implmentation mostly from https://iquilezles.org/articles/intersectors/ and https://www.realtimerendering.com/intersections.html.

Author

Dante Harper

Date

25 Sep 26

Function Documentation

linecast()

TOAST_API auto physics::linecast	(	glm::vec3	from,
		glm::vec3	to,
		int	max_hits = -1,
		BodyID	ignored = {},
		const std::vector< int > &	layers = {} ) -> std::vector< RayHit >

Like raymulticast from from until to

raycast()

TOAST_API auto physics::raycast	(	glm::vec3	origin,
		glm::vec3	direction,
		float	max_distance = -1.0f,
		BodyID	ignored = {},
		const std::vector< int > &	layers = {} ) -> std::optional< RayHit >

The nearest thing a ray hits

Parameters

ignored	Shapes of this body are not hit
layers	Indices of the layers a body must include one of to be hit, every layer when empty

raymulticast()

TOAST_API auto physics::raymulticast	(	glm::vec3	origin,
		glm::vec3	direction,
		float	max_distance = -1.0f,
		int	max_hits = -1,
		BodyID	ignored = {},
		const std::vector< int > &	layers = {} ) -> std::vector< RayHit >

Up to max_hits things a ray hits

Adds a hit per time a ray enters a body