stw::algo Namespace Reference

Namespace containing all the methods to get manifolds from collisions. This is here to separate the logic from the Collider class. Avoids the problem where we don't know if the circle-box collision resolution should be in the CircleCollider class or the box ColliderClass. More...

Functions
Manifold	FindCircleCircleManifold (const CircleCollider *a, const Transform *ta, const CircleCollider *b, const Transform *tb)
	Finds the collision manifold between A and B.
Manifold	FindCircleBoxManifold (const CircleCollider *a, const Transform *ta, const BoxCollider *b, const Transform *tb)
	Finds the collision manifold between A and B.
Manifold	FindBoxCircleManifold (const BoxCollider *a, const Transform *ta, const CircleCollider *b, const Transform *tb)
	Finds the collision manifold between A and B.
Manifold	FindBoxBoxManifold (const BoxCollider *a, const Transform *ta, const BoxCollider *b, const Transform *tb)
	Finds the collision manifold between A and B.
Manifold	FindAabbAabbManifold (const AabbCollider *a, const Transform *ta, const AabbCollider *b, const Transform *tb)
	Finds the collision manifold between A and B.
Manifold	FindAabbCircleManifold (const AabbCollider *a, const Transform *ta, const CircleCollider *b, const Transform *tb)
	Finds the collision manifold between A and B.
Manifold	FindCircleAabbManifold (const CircleCollider *a, const Transform *ta, const AabbCollider *b, const Transform *tb)
	Finds the collision manifold between A and B.
Vector2	Support (const Collider *colliderA, const Transform *transformA, const Collider *colliderB, const Transform *transformB, const Vector2 &direction)
	Support function of the GJK algorithm.
Manifold	Gjk (const Collider *colliderA, const Transform *transformA, const Collider *colliderB, const Transform *transformB)
	Finds the manifold between A and B using GJK.
bool	NextSimplex (const Simplex &points, Vector2 &direction)
	Finds the next simplex for the GJK algorithm.
bool	SameDirection (Vector2 direction, Vector2 ao)
	Finds if both vectors are going in the same direction.
bool	Line (const Simplex &points, Vector2 &direction)
	Line case for the NextSimplex function.
bool	Triangle (const Simplex &points, Vector2 &direction)
	Triangle case for the NextSimplex function.
Manifold	Epa (const Simplex &simplex, const Collider *colliderA, const Transform *transformA, const Collider *colliderB, const Transform *transformB)
	Find the manifold from the last simplex of the GJK algorithm.
Manifold	Sat (const BoxCollider *colliderA, const Transform *transformA, const BoxCollider *colliderB, const Transform *transformB)

Detailed Description

Namespace containing all the methods to get manifolds from collisions. This is here to separate the logic from the Collider class. Avoids the problem where we don't know if the circle-box collision resolution should be in the CircleCollider class or the box ColliderClass.

Function Documentation

Epa()

Manifold stw::algo::Epa	(	const Simplex &	simplex,
		const Collider *	colliderA,
		const Transform *	transformA,
		const Collider *	colliderB,
		const Transform *	transformB )

Find the manifold from the last simplex of the GJK algorithm.

Parameters

simplex	Last simplex of the GJK.
colliderA	Collider of object A.
transformA	Transform of object A.
colliderB	Collider of object B.
transformB	Transform of object B.

Returns

The manifold found.

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FindAabbAabbManifold()

Manifold stw::algo::FindAabbAabbManifold	(	const AabbCollider *	a,
		const Transform *	ta,
		const AabbCollider *	b,
		const Transform *	tb )

Finds the collision manifold between A and B.

Parameters

a	AABB collider of the object A.
ta	Transform of the object A.
b	AABB collider of the object B.
tb	Transform of the object B.

Returns

The manifold of the collisions between A and B.

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FindAabbCircleManifold()

Manifold stw::algo::FindAabbCircleManifold	(	const AabbCollider *	a,
		const Transform *	ta,
		const CircleCollider *	b,
		const Transform *	tb )

Finds the collision manifold between A and B.

Parameters

a	AABB collider of the object A.
ta	Transform of the object A.
b	Circle collider of the object B.
tb	Transform of the object B.

Returns

The manifold of the collisions between A and B.

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FindBoxBoxManifold()

Manifold stw::algo::FindBoxBoxManifold	(	const BoxCollider *	a,
		const Transform *	ta,
		const BoxCollider *	b,
		const Transform *	tb )

Finds the collision manifold between A and B.

Parameters

a	Box collider of the object A.
ta	Transform of the object A.
b	Box collider of the object B.
tb	Transform of the object B.

Returns

The manifold of the collisions between A and B.

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FindBoxCircleManifold()

Manifold stw::algo::FindBoxCircleManifold	(	const BoxCollider *	a,
		const Transform *	ta,
		const CircleCollider *	b,
		const Transform *	tb )

Finds the collision manifold between A and B.

Parameters

a	Box collider of the object A.
ta	Transform of the object A.
b	Circle collider of the object B.
tb	Transform of the object B.

Returns

The manifold of the collisions between A and B.

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FindCircleAabbManifold()

Manifold stw::algo::FindCircleAabbManifold	(	const CircleCollider *	a,
		const Transform *	ta,
		const AabbCollider *	b,
		const Transform *	tb )

Finds the collision manifold between A and B.

Parameters

a	Circle collider of the object A.
ta	Transform of the object A.
b	AABB collider of the object B.
tb	Transform of the object B.

Returns

The manifold of the collisions between A and B.

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FindCircleBoxManifold()

Manifold stw::algo::FindCircleBoxManifold	(	const CircleCollider *	a,
		const Transform *	ta,
		const BoxCollider *	b,
		const Transform *	tb )

Finds the collision manifold between A and B.

Parameters

a	Circle collider of the object A.
ta	Transform of the object A.
b	Box collider of the object B.
tb	Transform of the object B.

Returns

The manifold of the collisions between A and B.

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FindCircleCircleManifold()

Manifold stw::algo::FindCircleCircleManifold	(	const CircleCollider *	a,
		const Transform *	ta,
		const CircleCollider *	b,
		const Transform *	tb )

Finds the collision manifold between A and B.

Parameters

a	Circle collider of the object A.
ta	Transform of the object A.
b	Circle collider of the object B.
tb	Transform of the object B.

Returns

The manifold of the collisions between A and B.

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Gjk()

Manifold stw::algo::Gjk	(	const Collider *	colliderA,
		const Transform *	transformA,
		const Collider *	colliderB,
		const Transform *	transformB )

Finds the manifold between A and B using GJK.

Parameters

colliderA	Collider of object A.
transformA	Transform of object A.
colliderB	Collider of object B.
transformB	Transform of object B.

Returns

Returns the manifold of the objects using the GJK algorithm.

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Line()

bool stw::algo::Line	(	const Simplex &	points,
		Vector2 &	direction )

Line case for the NextSimplex function.

Parameters

points	Points of the line simplex.
direction	Direction of the next point.

Returns

True if we found the origin.

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NextSimplex()

bool stw::algo::NextSimplex	(	const Simplex &	points,
		Vector2 &	direction )

Finds the next simplex for the GJK algorithm.

Parameters

points	Current simplex.
direction	Direction in which to find the next simplex.

Returns

True if we found the origin.

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SameDirection()

bool stw::algo::SameDirection	(	Vector2	direction,
		Vector2	ao )

Finds if both vectors are going in the same direction.

Parameters

direction	Direction vector.
ao	Vector between a and the origin.

Returns

True if both of the vectors are going in the same direction.

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Sat()

Manifold stw::algo::Sat	(	const BoxCollider *	colliderA,
		const Transform *	transformA,
		const BoxCollider *	colliderB,
		const Transform *	transformB )

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Support()

Vector2 stw::algo::Support	(	const Collider *	colliderA,
		const Transform *	transformA,
		const Collider *	colliderB,
		const Transform *	transformB,
		const Vector2 &	direction )

Support function of the GJK algorithm.

Parameters

colliderA	Collider of object A.
transformA	Transform of object A.
colliderB	Collider of object B.
transformB	Transform of object B.
direction	Direction in which to find the vector.

Returns

The vertex found by the support function.

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Triangle()

bool stw::algo::Triangle	(	const Simplex &	points,
		Vector2 &	direction )

Triangle case for the NextSimplex function.

Parameters

points	Points of the Triangle simplex.
direction	Direction of the next point.

Returns

True if we found the origin.

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