cCollisionSpheresNode Class Reference
[Collision Detection]

cCollisionSpheresNode defines internal nodes of the collision sphere tree and provides methods for constructing the nodes and using them to determine collisions. More...

#include <CCollisionSpheres.h>

Inheritance diagram for cCollisionSpheresNode:

[legend]

List of all members.

Public Member Functions
	cCollisionSpheresNode (Plist &a_primList, cCollisionSpheresSphere *a_parent=NULL)
	Constructor of cCollisionSpheresNode.
	cCollisionSpheresNode (std::vector< cTriangle > *a_tris, cCollisionSpheresSphere *a_parent=NULL, double a_extendedRadius=0)
	Constructor of cCollisionSpheresNode.
	cCollisionSpheresNode ()
	Default constructor of cCollisionSpheresNode.
virtual	~cCollisionSpheresNode ()
	Destructor of cCollisionSpheseNode.
void	ConstructChildren (Plist &a_primList)
	Create subtrees by splitting primitives into left and right lists.
int	isLeaf ()
	Return whether the node is a leaf node. (In this class, it is not.).
void	draw (int a_depth)
	Draw the collision sphere if at the given depth.
Static Public Member Functions
static bool	computeCollision (cCollisionSpheresNode *a_sa, cCollisionSpheresSphere *a_sb, cCollisionRecorder &a_recorder, cCollisionSettings &a_settings)
	Check for intersection between given nodes, the first an internal node.
static void	swapptr (void **a_a, void **a_b)
	Exchange the two given pointers.
Public Attributes
cCollisionSpheresSphere *	m_left
	Pointer to the left child in the sphere tree.
cCollisionSpheresSphere *	m_right
	Pointer to the right child in the sphere tree.

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Detailed Description

cCollisionSpheresNode defines internal nodes of the collision sphere tree and provides methods for constructing the nodes and using them to determine collisions.

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Constructor & Destructor Documentation

cCollisionSpheresNode::cCollisionSpheresNode	(	Plist &	a_primList,
		cCollisionSpheresSphere *	a_parent = NULL
	)

Constructor of cCollisionSpheresNode.

Constructor of cCollisionSpheresNode.

Parameters:

	a_primList	List of shape primitives to be enclosed in the subtree rooted at this internal node.
	a_parent	Pointer to the parent of this node in the tree.

cCollisionSpheresNode::cCollisionSpheresNode	(	std::vector< cTriangle > *	a_tris,
		cCollisionSpheresSphere *	a_parent = NULL,
		double	a_extendedRadius = 0
	)

Constructor of cCollisionSpheresNode.

Constructor of cCollisionSpheresNode.

cCollisionSpheresSphere(a_parent)

Parameters:

	a_tris	Pointer to vector of triangles to use for collision detection.
	a_parent	Pointer to the parent of this node in sphere tree.
	a_extendedRadius	Bounding radius.

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Member Function Documentation

bool cCollisionSpheresNode::computeCollision	(	cCollisionSpheresNode *	a_sa,
		cCollisionSpheresSphere *	a_sb,
		cCollisionRecorder &	a_recorder,
		cCollisionSettings &	a_settings
	)			[static]

Check for intersection between given nodes, the first an internal node.

Determine whether there is any intersection between the primitives (line and triangles) in the collision subtrees rooted at the two given collision spheres. If so, return (in the output parameters) information about the intersected triangle of the mesh closest to the segment origin.

Parameters:

	a_sa	Root of one sphere tree to check for collision.
	a_sb	Root of other sphere tree to check for collision.
	a_recorder	Stores all collision events
	a_settings	Contains collision settings information.

Returns:

Return whether any primitives within the two sphere trees collide.

void cCollisionSpheresNode::ConstructChildren

(

Plist &

a_primList

)

Create subtrees by splitting primitives into left and right lists.

Create subtrees by splitting primitives into left and right lists.

Parameters:

a_primList

List of shape primitives to be split into left and right subtrees.

void cCollisionSpheresNode::draw

(

int

a_depth

)

[virtual]

Draw the collision sphere if at the given depth.

Draw the collision sphere if at the given depth.

Parameters:

a_depth

Only draw nodes at this depth in the tree. a_depth = -1 renders the complete tree.

Implements cCollisionSpheresSphere.

void cCollisionSpheresNode::swapptr	(	void **	a_a,
		void **	a_b
	)			[static]

Exchange the two given pointers.

Exchange the two given pointers.

Parameters:

	a_a	First pointer to be swapped.
	a_b	Second pointer to be swapped.

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

• D:/CHAI3D/build-2-0-0/2.0.0/win32/src/collisions/CCollisionSpheres.h
• D:/CHAI3D/build-2-0-0/2.0.0/win32/src/collisions/CCollisionSpheres.cpp