SphereCollider Class Reference

#include <OPC_SphereCollider.h>

Inheritance diagram for SphereCollider:

List of all members.

Public Member Functions
bool	Collide (SphereCache &cache, const Sphere &sphere, const Model &model, const Matrix4x4 *worlds=null, const Matrix4x4 *worldm=null)
bool	Collide (SphereCache &cache, const Sphere &sphere, const AABBTree *tree)
	SphereCollider ()
virtual	~SphereCollider ()
Protected Member Functions
void	_Collide (const AABBCollisionNode *node)
void	_Collide (const AABBNoLeafNode *node)
void	_Collide (const AABBQuantizedNode *node)
void	_Collide (const AABBQuantizedNoLeafNode *node)
void	_Collide (const AABBTreeNode *node)
void	_CollideNoPrimitiveTest (const AABBCollisionNode *node)
void	_CollideNoPrimitiveTest (const AABBNoLeafNode *node)
void	_CollideNoPrimitiveTest (const AABBQuantizedNode *node)
void	_CollideNoPrimitiveTest (const AABBQuantizedNoLeafNode *node)
BOOL	InitQuery (SphereCache &cache, const Sphere &sphere, const Matrix4x4 *worlds=null, const Matrix4x4 *worldm=null)
inline_ BOOL	SphereAABBOverlap (const Point &center, const Point &extents)
inline_ BOOL	SphereContainsBox (const Point &bc, const Point &be)
BOOL	SphereTriOverlap (const Point &vert0, const Point &vert1, const Point &vert2)
Protected Attributes
Point	mCenter
	Sphere center.
float	mRadius2
	Sphere radius squared.

---

Detailed Description

Contains a sphere-vs-tree collider. This class performs a collision test between a sphere and an AABB tree. You can use this to do a standard player vs world collision, in a Nettle/Telemachos way. It doesn't suffer from all reported bugs in those two classic codes - the "new" one by Paul Nettle is a debuggued version I think. Collision response can be driven by reported collision data - it works extremely well for me. In sake of efficiency, all meshes (that is, all AABB trees) should of course also be kept in an extra hierarchical structure (octree, whatever).

Author:

Pierre Terdiman

Version:

1.3

Date:

June, 2, 2001

Definition at line 35 of file OPC_SphereCollider.h.

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Constructor & Destructor Documentation

SphereCollider::SphereCollider

(

)

virtual SphereCollider::~SphereCollider

(

)

[virtual]

---

Member Function Documentation

void SphereCollider::_Collide

(

const AABBCollisionNode *

node

)

[protected]

void SphereCollider::_Collide

(

const AABBNoLeafNode *

node

)

[protected]

void SphereCollider::_Collide

(

const AABBQuantizedNode *

node

)

[protected]

void SphereCollider::_Collide

(

const AABBQuantizedNoLeafNode *

node

)

[protected]

void SphereCollider::_Collide

(

const AABBTreeNode *

node

)

[protected]

void SphereCollider::_CollideNoPrimitiveTest

(

const AABBCollisionNode *

node

)

[protected]

void SphereCollider::_CollideNoPrimitiveTest

(

const AABBNoLeafNode *

node

)

[protected]

void SphereCollider::_CollideNoPrimitiveTest

(

const AABBQuantizedNode *

node

)

[protected]

void SphereCollider::_CollideNoPrimitiveTest

(

const AABBQuantizedNoLeafNode *

node

)

[protected]

bool SphereCollider::Collide	(	SphereCache &	cache,
		const Sphere &	sphere,
		const Model &	model,
		const Matrix4x4 *	worlds = null,
		const Matrix4x4 *	worldm = null
	)

Generic collision query for generic OPCODE models. After the call, access the results:

• with GetContactStatus()
• with GetNbTouchedPrimitives()
• with GetTouchedPrimitives()

Parameters:

cache	[in/out] a sphere cache
sphere	[in] collision sphere in local space
model	[in] Opcode model to collide with
worlds	[in] sphere's world matrix, or null
worldm	[in] model's world matrix, or null

Returns:

true if success

Warning:

SCALE NOT SUPPORTED. The matrices must contain rotation & translation parts only.

bool SphereCollider::Collide	(	SphereCache &	cache,
		const Sphere &	sphere,
		const AABBTree *	tree
	)

BOOL SphereCollider::InitQuery	(	SphereCache &	cache,
		const Sphere &	sphere,
		const Matrix4x4 *	worlds = null,
		const Matrix4x4 *	worldm = null
	)		[protected]

inline_ BOOL SphereCollider::SphereAABBOverlap	(	const Point &	center,
		const Point &	extents
	)		[protected]

Sphere-AABB overlap test, based on Jim Arvo's code.

Parameters:

center	[in] box center
extents	[in] box extents

Returns:

TRUE on overlap

Definition at line 9 of file OPC_SphereAABBOverlap.h.

inline_ BOOL SphereCollider::SphereContainsBox	(	const Point &	bc,
		const Point &	be
	)		[protected]

BOOL SphereCollider::SphereTriOverlap	(	const Point &	vert0,
		const Point &	vert1,
		const Point &	vert2
	)		[protected]

Definition at line 9 of file OPC_SphereTriOverlap.h.

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Member Data Documentation

Point SphereCollider::mCenter [protected]

Sphere center.

Definition at line 64 of file OPC_SphereCollider.h.

float SphereCollider::mRadius2 [protected]

Sphere radius squared.

Definition at line 65 of file OPC_SphereCollider.h.

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The documentation for this class was generated from the following files:

• OPC_SphereCollider.h
• OPC_SphereAABBOverlap.h
• OPC_SphereTriOverlap.h