OPC_AABBTree.h File Reference

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Classes
class	AABBTree
class	AABBTreeNode

Macros
#define	EXWORD   udword
#define	IMPLEMENT_TREE(base_class, volume)
	TO BE DOCUMENTED. More...

Typedefs
typedef void(*	CullingCallback) (udword nb_primitives, udword *node_primitives, BOOL need_clipping, void *user_data)
typedef bool(*	WalkingCallback) (const AABBTreeNode *current, udword depth, void *user_data)

Detailed Description

Contains code for a versatile AABB tree.

Author

Pierre Terdiman

Date

March, 20, 2001

Definition in file OPC_AABBTree.h.

Macro Definition Documentation

EXWORD

#define EXWORD   udword

Definition at line 26 of file OPC_AABBTree.h.

IMPLEMENT_TREE

#define IMPLEMENT_TREE	(		base_class,
			volume
	)

Value:

                public:                                                                                                                                                                                                                 \
                /* Constructor / Destructor */                                                                                                                                                                  \
                                                                        base_class();                                                                                                                                           \
                                                                        ~base_class();                                                                                                                                          \
                /* Data access */                                                                                                                                                                                               \
                inline_ const volume*           Get##volume()   const   { return &mBV;                                                  }                                       \
                /* Clear the last bit */                                                                                                                                                                                \
                inline_ const base_class*       GetPos()                const   { return (const base_class*)(mPos&~1);  }                                       \
                inline_ const base_class*       GetNeg()                const   { return (const base_class*)(mNeg&~1);  }                                       \
                                                                                                                                                                                                                                                \
/*              inline_ bool                            IsLeaf()                const   { return (!GetPos() && !GetNeg());      }       */                                      \
                /* We don't need to test both nodes since we can't have one without the other   */                                                              \
                inline_ bool                            IsLeaf()                const   { return !GetPos();                                             }                                       \
                                                                                                                                                                                                                                                \
                /* Stats */                                                                                                                                                                                                             \
                inline_ udword                          GetNodeSize()   const   { return SIZEOFOBJECT;                                  }                                       \
                protected:                                                                                                                                                                                                              \
                /* Tree-independent data */                                                                                                                                                                             \
                /* Following data always belong to the BV-tree, regardless of what the tree actually contains.*/                                \
                /* Whatever happens we need the two children and the enclosing volume.*/                                                                                \
                                volume                          mBV;            /* Global bounding-volume enclosing all the node-related primitives */  \
                                EXWORD                          mPos;           /* "Positive" child */                                                                                                  \
                                EXOWRD                          mNeg;           /* "Negative" child */

TO BE DOCUMENTED.

Definition at line 55 of file OPC_AABBTree.h.

Typedef Documentation

CullingCallback

typedef void(* CullingCallback) (udword nb_primitives, udword *node_primitives, BOOL need_clipping, void *user_data)

Definition at line 81 of file OPC_AABBTree.h.

WalkingCallback

typedef bool(* WalkingCallback) (const AABBTreeNode *current, udword depth, void *user_data)

User-callback, called for each node by the walking code.

Parameters

current	[in] current node
depth	[in] current node's depth
user_data	[in] user-defined data

Returns

true to recurse through children, else false to bypass them

Definition at line 111 of file OPC_AABBTree.h.