CtrlHitLog Class Reference

#include <control.h>

Class Description

class CtrlHitLog

Description:

This class provides a data structure for keeping a log of hits during controller gizmo hit-testing. It provides a list of CtrlHitRecords that may be added to and cleared. A developer may also request the 'closest' hit record in the list. All methods are implemented by the system.

Inheritance diagram for CtrlHitLog:

Public Member Functions
	CtrlHitLog ()
	~CtrlHitLog ()
CoreExport void	Clear ()
CoreExport void	ClearHitIndex (bool ready=false)
CoreExport void	IncrHitIndex ()
CtrlHitRecord *	First ()
CoreExport CtrlHitRecord *	ClosestHit ()
CoreExport void	LogHit (INode *nr, DWORD dist, ulong info, DWORD infoExtra)

Additional Inherited Members
Static Public Member Functions inherited from MaxHeapOperators
static UtilExport void *	operator new (size_t size)
	Standard new operator used to allocate objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, const std::nothrow_t &e)
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static UtilExport void *	operator new (size_t size, const char *filename, int line)
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static UtilExport void *	operator new (size_t size, int block_type, const char *filename, int line)
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static UtilExport void *	operator new (size_t size, const std::nothrow_t &e, const char *filename, int line)
	New operator used to allocate objects that takes the filename and line number where the new was called If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new (size_t size, unsigned long flags)
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static UtilExport void *	operator new (size_t size, const std::nothrow_t &e, unsigned long flags)
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static UtilExport void *	operator new[] (size_t size)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new[] (size_t size, const char *filename, int line)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, int block_type, const char *filename, int line)
	New operator used to allocate arrays of objects. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e, const char *filename, int line)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new[] (size_t size, unsigned long flags)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e, unsigned long flags)
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static UtilExport void	operator delete (void *ptr)
	Standard delete operator used to deallocate an object If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e)
	Standard delete operator used to deallocate an object If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete (void *ptr, const char *filename, int line)
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static UtilExport void	operator delete (void *ptr, int block_type, const char *filename, int line)
	Delete operator used to deallocate an object that takes the type of memory, filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e, const char *filename, int line)
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static UtilExport void	operator delete (void *ptr, unsigned long flags)
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static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e, unsigned long flags)
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static UtilExport void	operator delete[] (void *ptr)
	Standard delete operator used to deallocate an array of objects If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e)
	Standard delete operator used to deallocate an array of objects If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete[] (void *ptr, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, int block_type, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the type of memory, filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the filename and line number where the delete was called If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete[] (void *ptr, unsigned long flags)
	Delete operator used to deallocate an array of objects that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e, unsigned long flags)
	Delete operator used to deallocate an array of objects that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, void *placement_ptr)
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static UtilExport void	operator delete (void *ptr, void *placement_ptr)
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Constructor & Destructor Documentation

CtrlHitLog ( )

inline

Remarks

Constructor.

{ first = NULL; hitIndex = 0; hitIndexReady = false; }

~CtrlHitLog ( )

inline

{ Clear(); }

Member Function Documentation

CoreExport void Clear

(

)

Remarks

Clears the list of hits.

CoreExport void ClearHitIndex ( bool  ready = false )

inline

{ hitIndex = 0; hitIndexReady = ready; }

CoreExport void IncrHitIndex ( )

inline

{ if (hitIndexReady) hitIndex++; else hitIndexReady = true; }

CtrlHitRecord* First ( )

inline

Remarks

Returns the first hit record in the list.

{ return first; }

CoreExport CtrlHitRecord* ClosestHit

(

)

Remarks

Returns the CtrlHitRecord that was 'closest' to the mouse position when hit testing was performed.

CoreExport void LogHit	(	INode *	nr,
		DWORD	dist,
		ulong	info,
		DWORD	infoExtra
	)

Remarks

This method is called to log a hit. It creates a new CtrlHitRecord object using the data passed and adds it to the hit log.

Parameters:

INode *nr

The node whose gizmo was hit.

DWORD dist

The 'distance' of the hit. What the distance actually represents depends on the rendering level of the viewport. For wireframe modes, it refers to the distance in the screen XY plane from the mouse to the sub-object component. In a shaded mode, it refers to the Z depth of the sub-object component. In both cases, smaller values indicate that the sub-object component is 'closer' to the mouse cursor.

ulong hitInfo;

A general unsigned long value. Most controllers will just need this to identity the sub-object element. The meaning of this value (how it is used to identify the element) is up to the plug-in.

DWORD infoExtra;

If the above hitInfo data member is not sufficient to describe the sub-object element this data member may be used as well.