SizeBufferAccess2dC<class DataT> - Basic access to buffer with limited size

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Ravl - Core - Arrays - Buffer - SizeBufferAccess2dC<class DataT>

SizeBufferAccess2dC<class DataT>

Basic access to buffer with limited size

include	"Ravl/SBfAcc2d.hh"
Created:	24/01/2001
Source file:	Ravl/Core/Container/Buffer/SBfAcc2d.hh
User Level:	Develop
Library:	RavlCore
In Scope:	RavlN

Comments:
The class SizeBufferAccessC enables to random indexed access to a sequentially organised continous part of memory called buffer. The access functions check if an accessed element is valid only in debug mode.

Parent Classes:

SizeBufferAccessC

BufferAccessC

Derived Classes:

SArray2dC

Variables:

SizeT size2;

Methods:

SizeBufferAccess2dC(SizeT nsize2): Constructor.
SizeBufferAccess2dC(const SizeBufferAccessC<BufferAccessC<DataT>> & ab,SizeT nsize2): Constructor.
SizeBufferAccess2dC(const BufferAccessC<BufferAccessC<DataT>> & ab,SizeT nsize1,SizeT nsize2): Constructor.
SizeBufferAccess2dC(const SizeBufferAccess2dC<DataT> & ab,SizeT nsize1,SizeT nsize2): Constructor.
SizeBufferAccess2dC(): Default constructor.
bool Contains(const Index2dC & i) const: Does this buffer contain the index i ?
Returns true if yes.
DataT & operator [](const Index2dC & i): access to the item array[(i)]
const DataT & operator [](const Index2dC & i) const: return the item array[(i)]
SizeBufferAccessC<DataT> operator [](IndexC i): access to the item array[(i)]
const SizeBufferAccessC<DataT> operator [](IndexC i) const: return the item array[(i)]
SizeT Size1() const: Size.
SizeT Size2() const: Size.
UIntT Size() const: Get the total number of elements in the array.
void Fill(const DataT & d): Fill array with value.
IntT Stride() const: Get the stide of the 2d array.
bool IsContinuous() const: Test if the array is allocated in a continous area of memory.
Note: this only checks the first two rows follow each other in memory, this may miss other discontunities.

#include "Ravl/SBfAcc.hh"

const SizeBufferAccessC<BufferAccessC<DataT>> & operator =(BufferAccessC<DataT> * bp): Changes the reference element to the element pointed by 'bp'. Access to the object --------------------
BufferAccessC<DataT> * DataStart() const: Returns the address of the first element of the buffer.
SizeT Size() const: Returns the number of elements of the array.
IndexRangeC Limits() const: Returns the usable range of indeces expressed by this object.
IndexRangeC Range() const: Returns the usable range of indeces expressed by this object.
IndexC IMin() const: Returns the minimum index of the range of this access.
IndexC IMax() const: Returns the maximum index of the range of this access.
const BufferAccessC<DataT> & operator [](const IndexC i) const: Read-only access to the ('i'+1)-th element of the buffer.
BufferAccessC<DataT> & operator [](const IndexC i): Read-write access to the ('i'+1)-th element of the buffer.
const SizeBufferAccessC<BufferAccessC<DataT>> & SAccess(void) const: Returns this object. Logical functions -----------------
bool IsEmpty() const: Returns TRUE if the size of the array is zero.
bool Contains(IndexC i) const: Returns TRUE if the array contains an item with the index 'i'. Modifications of the access ---------------------------
SizeT ShrinkHigh(SizeT k): Changes the number of elements by subtracting the last 'k' elements.
const SizeBufferAccessC<BufferAccessC<DataT>> & Swap(SizeBufferAccessC<BufferAccessC<DataT>> & a): Exchanges the contents of this buffer with buffer 'a'.
void Attach(const SizeBufferAccessC<BufferAccessC<DataT>> & b): Changes this buffer access to have the same access rights as 'b'.
void Attach(const BufferAccessC<BufferAccessC<DataT>> & b,SizeT size): Changes this buffer access to have the access rights as 'b' limited for 'size' elements.
SizeBufferAccessC<BufferAccessC<DataT>> operator +(SizeT i) const: Creates the new access object shifted 'i' elements to the right (towards next elements). The size is descreased to fit the the original range of this access. Modifications of the buffer contents ------------------------------------
void Fill(const BufferAccessC<DataT> & d): 'd' value is assigned to all elements of the buffer.
void CopyFrom(const SizeBufferAccessC<BufferAccessC<DataT>> & oth): Copy contents of another buffer into this one.
NB. Buffers MUST be the same length.
void Reverse(): Reverse the order of elements in this array in place.
SizeBufferAccessC<BufferAccessC<DataT>> BufferFrom(UIntT first): Get an access for this buffer starting from the 'first' element to the end of the buffer.
SizeBufferAccessC<BufferAccessC<DataT>> BufferFrom(UIntT first,UIntT len): Get an access for this buffer starting from the 'first' element for 'len' elements.
An error will be generated if the requested buffer isn't contains within this one.
bool operator ==(const SizeBufferAccessC<BufferAccessC<DataT>> & ba) const: Are two accesses the same ?
SizeBufferAccessC<BufferAccessC<DataT>> Copy(void) const: Returns a physical copy of this access pointing to the physical copy of the accessed buffer in the range accessible by this access. The new copy is necessary to attach to reference counted buffer or to delete at the end of the life of this object.

#include "Ravl/BufferAccess.hh"

BufferAccessC<DataT> * ReferenceElm() const: Returns the pointer to the reference element of the attached buffer. The reference element need not to be the valid element of the buffer.
void * ReferenceVoid() const: Returns the pointer to the reference element of the attached buffer. The reference element need not to be the valid element of the buffer. The function is intended to be used in printing.
bool IsValid() const: Returns TRUE if this buffer access is not a default access object.
const BufferAccessC<DataT> & operator [](const IndexC i) const: Read-only access to the ('i'+1)-th element of the buffer.
BufferAccessC<DataT> & operator [](const IndexC i): Read-write access to the ('i'+1)-th element of the buffer.
const BufferAccessC<BufferAccessC<DataT>> & operator +=(IndexC ind): Inplace Add index to start position.
const BufferAccessC<BufferAccessC<DataT>> & operator -=(IndexC ind): Inplace Subtract index from start position.
BufferAccessC<BufferAccessC<DataT>> operator -(IndexC ind) const: Substract value from position, and return it as a new value.
BufferAccessC<BufferAccessC<DataT>> operator +(IndexC ind) const: Substract value from position, and return it as a new value.
bool operator ==(const BufferAccessC<BufferAccessC<DataT>> & ba) const: Are two accesses the same ?
bool operator !=(const BufferAccessC<BufferAccessC<DataT>> & ba) const: Are two accesses the same ?

Maintainer:Charles Galambos, Created: 24/01/2001, Documentation by CxxDoc: Tue Aug 13 09:59:30 2002