FieldCallerStack Class Reference

#include <c4d_fielddata.h>

Detailed Description

A list of all of the "callers" i.e. objects that invoked the sampling function. Additionally contains an identifier one way hash created to generate a unique ID based on the objects invoking the sampling, you can append additional addresses/objects using the operator + and += functions in order to continue the chain and ensure that the caller ID remains unique within the FieldInfo for each call chain.

Public Member Functions
	FieldCallerStack ()=default
	FieldCallerStack (UInt value)
	FieldCallerStack (FieldCallerStack &&src)
	~FieldCallerStack ()=default
	MAXON_OPERATOR_MOVE_ASSIGNMENT (FieldCallerStack)
maxon::Result< void >	CopyFrom (const FieldCallerStack &src)
const BaseList2D *	operator[] (Int index) const
	operator const UInt & () const
UInt	RecalcValue () const
void	UpdateValue ()
void	UpdateValue (const BaseList2D *caller)
maxon::Result< void >	Add (const BaseList2D *caller)
Int	GetCount () const
UInt	GetValue () const
Bool	IsValid () const
void	Add (UInt levelValue)
maxon::Result< void >	AddOrAddCacheParentObject (BaseObject *caller)

Static Public Member Functions
static FieldCallerStack	Create ()
static maxon::Result< FieldCallerStack >	Create (const BaseList2D *caller)
static maxon::Result< FieldCallerStack >	Create (const std::initializer_list< const BaseList2D * > &callers)
static FieldCallerStack	Add (const FieldCallerStack &src, const BaseList2D *newCaller)

Public Attributes
UInt	_value
maxon::BaseArray< const BaseList2D * >	_callers

Private Member Functions
	MAXON_DISALLOW_COPY_AND_ASSIGN (FieldCallerStack)

Constructor & Destructor Documentation

FieldCallerStack() [1/3]

FieldCallerStack ( )

default

FieldCallerStack() [2/3]

FieldCallerStack ( UInt  value )

explicit

FieldCallerStack() [3/3]

FieldCallerStack

(

FieldCallerStack &&

src

)

~FieldCallerStack()

~FieldCallerStack ( )

default

Member Function Documentation

MAXON_DISALLOW_COPY_AND_ASSIGN()

MAXON_DISALLOW_COPY_AND_ASSIGN ( FieldCallerStack  )

private

MAXON_OPERATOR_MOVE_ASSIGNMENT()

MAXON_OPERATOR_MOVE_ASSIGNMENT

(

FieldCallerStack

)

Create() [1/3]

static FieldCallerStack Create ( )

static

Creates an empty FieldCallerStack. Cannot fail. Same as using default constructor.

Returns

A maxon::Result<FieldCallerStack>.

Create() [2/3]

static maxon::Result<FieldCallerStack> Create ( const BaseList2D *  caller )

static

Creates a FieldCallerStack while relaying potential allocation errors. On error, the result will contain a default FieldCallerStack structure.

Parameters

[in]

caller

The first caller for the stack.

Returns

A maxon::Result<FieldCallerStack>.

Create() [3/3]

static maxon::Result<FieldCallerStack> Create ( const std::initializer_list< const BaseList2D * > &  callers )

static

Creates a FieldCallerStack while relaying potential allocation errors. On error, the result will contain a default FieldCallerStack structure.

Parameters

[in]

callers

An initializer list to build the stack, first item is base of stack.

Returns

A maxon::Result<FieldCallerStack>.

CopyFrom()

maxon::Result<void> CopyFrom

(

const FieldCallerStack &

src

)

Copies from the supplied FieldCallerStack.

Parameters

[in]

src

The source.

Returns

A maxon::Result.

operator[]()

const BaseList2D* operator[]

(

Int

index

)

const

Returns an element of the stack.

Parameters

[in]

index

The caller index.

Returns

The element.

operator const UInt &()

operator const UInt &

(

)

const

Cast to UInt, return the value of the stack.

Returns

The stack value.

RecalcValue()

UInt RecalcValue

(

)

const

Calculates the id of the caller stack from scratch. Does not update stored id value.

Returns

The new id.

UpdateValue() [1/2]

void UpdateValue

(

)

Recalculates the id of the caller stack from scratch. Will update the internal stack id value.

UpdateValue() [2/2]

void UpdateValue

(

const BaseList2D *

caller

)

Calculates a new stack id from the current id and the added caller. Can be used to calculate a stack id without carrying the actual BaseList2d stack.

Parameters

[in]

caller

The new caller, assuming already added to stack.

Add() [1/3]

maxon::Result<void> Add

(

const BaseList2D *

caller

)

Adds a caller to the caller stack and updates the stack id.

Parameters

[in]

caller

The caller object to add to the stack.

Returns

OK on success.

Add() [2/3]

static FieldCallerStack Add ( const FieldCallerStack &  src, const BaseList2D *  newCaller  )

static

Adds a caller to the caller stack and returns a modified stack. This function hides the memory management iferr statement by returning an empty FieldCallerStack if an error occurs. It can be used within a field sampling call directly. But it is recommended to use the non static version and avoid any field sampling call if a prior memory error occurred.

Parameters

[in]	src	The original stack.
[in]	newCaller	The caller object to add to the stack.

Returns

A new stack passed by move constructor. Stack will be empty if internal error occurred.

GetCount()

Int GetCount

(

void

)

const

Returns the number of callers involved in this chain.

Returns

The number of callers.

GetValue()

UInt GetValue

(

void

)

const

Returns the caller stack id.

Returns

The id.

IsValid()

Bool IsValid

(

)

const

Check for valid stack content. Empty stack is valid. Stack with null pointers is not valid. Non empty stack with no stack id value is not valid.

Returns

True if valid.

Add() [3/3]

void Add

(

UInt

levelValue

)

Adds a non caller value to the stack ID.

Parameters

[in]

levelValue

The value to add to the stack ID..

AddOrAddCacheParentObject()

maxon::Result<void> AddOrAddCacheParentObject

(

BaseObject *

caller

)

Adds a the object or it's cache parent parent to the stack if the object has a cache along with all object uniqueIP's to maintain a better path to the object.

Parameters

[in]

caller

The caller object or caller cache source to add to the stack ID.

Returns

OK on success.

Member Data Documentation

_value

UInt _value

Caller stack id.

_callers

maxon::BaseArray<const BaseList2D*> _callers

Detailed stack for id _value.