Field3D
EmptyField< Data_T > Class Template Reference

This subclass of Field does not store any data. More...

#include <EmptyField.h>

Inheritance diagram for EmptyField< Data_T >:
ResizableField< Data_T > WritableField< Data_T > Field< Data_T > FieldRes FieldBase RefBase MetadataCallback

Public Types

typedef EmptyField< Data_T > class_type
 
typedef boost::intrusive_ptr< EmptyFieldPtr
 
typedef std::vector< PtrVec
 
- Public Types inherited from ResizableField< Data_T >
typedef ResizableField< Data_T > class_type
 
typedef boost::intrusive_ptr< ResizableFieldPtr
 
- Public Types inherited from WritableField< Data_T >
typedef WritableField< Data_T > class_type
 
typedef boost::intrusive_ptr< WritableFieldPtr
 
- Public Types inherited from Field< Data_T >
typedef Field< Data_T > class_type
 
typedef boost::intrusive_ptr< FieldPtr
 
typedef Data_T value_type
 Allows us to reference the template class. More...
 
typedef std::vector< PtrVec
 This is a convenience typedef for the list that Field3DInputFile::readScalarLayers() and Field3DInputFile::readVectorLayers() will return its data in. More...
 
- Public Types inherited from FieldRes
typedef FieldRes class_type
 
typedef boost::intrusive_ptr< FieldResPtr
 
typedef std::vector< PtrVec
 
- Public Types inherited from FieldBase
typedef FieldBase class_type
 
typedef boost::intrusive_ptr< FieldBasePtr
 
- Public Types inherited from RefBase
typedef boost::intrusive_ptr< RefBasePtr
 
typedef boost::weak_ptr< RefBaseWeakPtr
 

Public Member Functions

Constructors & destructor
 EmptyField ()
 Constructs an empty buffer. More...
 
virtual void clear (const Data_T &value)
 Clears all the voxels in the storage. More...
 
const Data_T & constantvalue () const
 Returns the constant value. More...
 
void setConstantvalue (const Data_T &val)
 Sets the constant value. More...
 
From Field


virtual Data_T value (int i, int j, int k) const
 Read access to a voxel. The coordinates are in integer voxel space . More...
 
virtual long long int memSize () const
 Returns the memory usage (in bytes) More...
 
From WritableField
virtual Data_T & lvalue (int i, int j, int k)
 Write access to a voxel. The coordinates are global coordinates. More...
 
From FieldBase
virtual FIELD3D_CLASSNAME_CLASSTYPE_IMPLEMENTATION FieldBase::Ptr clone () const
 Returns a pointer to a copy of the field, pure virtual so ensure derived classes properly implement it. More...
 
- Public Member Functions inherited from ResizableField< Data_T >
void copyFrom (typename Field< Data_T >::Ptr other)
 Copies the data from another Field, also resizes. More...
 
template<class Data_T2 >
void copyFrom (typename Field< Data_T2 >::Ptr other)
 Copies the data from another Field of another template class, also resizes. More...
 
void matchDefinition (FieldRes::Ptr fieldToMatch)
 Sets up this field so that resolution and mapping matches the other. More...
 
void setSize (const Box3i &extents)
 Resizes the object. More...
 
void setSize (const Box3i &extents, const Box3i &dataWindow)
 Resizes the object. More...
 
void setSize (const V3i &size)
 Resizes the object. More...
 
void setSize (const V3i &size, int padding)
 Resizes the object with padding. More...
 
- Public Member Functions inherited from WritableField< Data_T >
iterator begin ()
 Iterator to first element. More...
 
iterator begin (const Box3i &subset)
 Iterator to first element of specific subset. More...
 
iterator end ()
 Iterator pointing one element past the last valid one. More...
 
iterator end (const Box3i &subset)
 Iterator pointing one element past the last valid one (for a subset) More...
 
- Public Member Functions inherited from Field< Data_T >
const_iterator cbegin () const
 Const iterator to first element. "cbegin" matches the tr1 c++ standard. More...
 
const_iterator cbegin (const Box3i &subset) const
 Const iterator to first element of specific subset. More...
 
const_iterator cend () const
 Const iterator pointing one element past the last valid one. More...
 
const_iterator cend (const Box3i &subset) const
 Const iterator pointing one element past the last valid one (for a subset) More...
 
virtual std::string dataTypeString () const
 
virtual ~Field ()
 Dtor. More...
 
- Public Member Functions inherited from FieldRes
const V3i dataResolution () const
 
const Box3idataWindow () const
 Returns the data window. Any coordinate inside this window is safe to pass to value() in the Field subclass. More...
 
const Box3iextents () const
 Returns the extents of the data. This signifies the relevant area that the data exists over. However, the data window (below) may be smaller than the extents, in which case it is only safe to call value() for those coordinate inside the data window. More...
 
 FieldRes ()
 This constructor ensures that we have a valid mapping at all times. More...
 
 FieldRes (const FieldRes &src)
 Base class copy constructor. More...
 
bool isInBounds (int i, int j, int k) const
 Returns true is the indicies are in bounds of the data window. More...
 
FieldMapping::Ptr mapping ()
 Returns a pointer to the mapping. More...
 
const FieldMapping::Ptr mapping () const
 Returns a pointer to the mapping. More...
 
virtual void mappingChanged ()
 Tells the subclass that the mapping changed. More...
 
void setMapping (FieldMapping::Ptr mapping)
 Sets the field's mapping. More...
 
virtual size_t voxelCount () const
 Counts the number of voxels. For most fields, this is just the volume of the data window, but sparse data structures can override this to return a better value. More...
 
- Public Member Functions inherited from FieldBase
 FieldBase ()
 Constructor. More...
 
 FieldBase (const FieldBase &)
 Copy Constructor. More...
 
virtual ~FieldBase ()
 Destructor. More...
 
virtual std::string className () const =0
 Returns the class name of the object. Used by the class pool and when writing the data to disk. More...
 
virtual std::string classType () const =0
 Returns the full class type string. More...
 
FieldMetadatametadata ()
 accessor to the m_metadata class More...
 
const FieldMetadatametadata () const
 Read only access to the m_metadata class. More...
 
void copyMetadata (const FieldBase &field)
 Copies the metadata from a second field. More...
 
- Public Member Functions inherited from RefBase
void ref () const
 Used by boost::intrusive_pointer. More...
 
size_t refcnt ()
 Used by boost::intrusive_pointer. More...
 
void unref () const
 Used by boost::intrusive_pointer. More...
 
WeakPtr weakPtr () const
 
 RefBase ()
 
 RefBase (const RefBase &)
 Copy constructor. More...
 
RefBaseoperator= (const RefBase &)
 Assignment operator. More...
 
virtual ~RefBase ()
 Destructor. More...
 
virtual bool checkRTTI (const char *typenameStr)=0
 This function is only implemented by concrete classes and triggers the actual RTTI check through matchRTTI();. More...
 
bool matchRTTI (const char *typenameStr)
 Performs a check to see if the given typename string matches this class' This needs to be implemented in -all- subclasses, even abstract ones. More...
 
- Public Member Functions inherited from MetadataCallback
virtual void metadataHasChanged (const std::string &)
 Alerts the callback holder that the metadata has changed. More...
 

Static Public Member Functions

static const DEFINE_FIELD_RTTI_CONCRETE_CLASS char * staticClassName ()
 
static const char * staticClassType ()
 
- Static Public Member Functions inherited from ResizableField< Data_T >
static const char * staticClassName ()
 
static const char * staticClassType ()
 
- Static Public Member Functions inherited from WritableField< Data_T >
static const char * staticClassName ()
 
static const char * staticClassType ()
 
- Static Public Member Functions inherited from Field< Data_T >
static const char * staticClassName ()
 
static const char * staticClassType ()
 
- Static Public Member Functions inherited from FieldRes
static const char * staticClassName ()
 
static const char * staticClassType ()
 
- Static Public Member Functions inherited from FieldBase
static const char * staticClassName ()
 
static const char * staticClassType ()
 
- Static Public Member Functions inherited from RefBase
static const char * staticClassType ()
 

Protected Attributes

Data_T m_constantData
 Field constant value. More...
 
Data_T m_default
 Field default value. More...
 
Data_T m_ignoredData
 Dummy variable for assignment. More...
 
- Protected Attributes inherited from FieldRes
Box3i m_dataWindow
 Defines the area where data is allocated. This should be treated as a closed (i.e. inclusive) interval. More...
 
Box3i m_extents
 Defines the extents of the the storage. This may be larger or smaller than the data window, and in the case where it is larger, care must be taken not to access voxels outside the data window. This should be treated as a closed (i.e. inclusive) interval. More...
 
FieldMapping::Ptr m_mapping
 Pointer to the field's mapping. More...
 

Private Types

typedef ResizableField< Data_T > base
 

Additional Inherited Members

- Public Attributes inherited from ResizableField< Data_T >
 DEFINE_FIELD_RTTI_ABSTRACT_CLASS
 
- Public Attributes inherited from WritableField< Data_T >
 DEFINE_FIELD_RTTI_ABSTRACT_CLASS
 
- Public Attributes inherited from Field< Data_T >
 DEFINE_FIELD_RTTI_ABSTRACT_CLASS
 
- Public Attributes inherited from FieldRes
 DEFINE_FIELD_RTTI_ABSTRACT_CLASS
 
- Public Attributes inherited from FieldBase
std::string attribute
 Optional name of the attribute the field represents. More...
 
std::string name
 Optional name of the field. More...
 
- Protected Types inherited from ResizableField< Data_T >
typedef WritableField< Data_T > base
 
- Protected Types inherited from FieldRes
typedef MatrixFieldMapping default_mapping
 
- Protected Member Functions inherited from ResizableField< Data_T >
virtual void sizeChanged ()
 Subclasses should re-implement this if they need to perform memory allocations, etc. every time the size of the storage changes. More...
 
- Static Protected Attributes inherited from ResizableField< Data_T >
static TemplatedFieldType< ResizableField< Data_T > > ms_classType
 

Detailed Description

template<class Data_T>
class EmptyField< Data_T >

This subclass of Field does not store any data.

Its primary purpose is to be used as a proxy field. It can carry the same resolution, metadata and mapping as a regular field.

Usage is similar to a DenseField, except that it does not contain any data. It stores a default value that may be set and queried, so it can be treated as a constant field.

Definition at line 86 of file EmptyField.h.

Member Typedef Documentation

◆ Ptr

template<class Data_T>
typedef boost::intrusive_ptr<EmptyField> EmptyField< Data_T >::Ptr

Definition at line 93 of file EmptyField.h.

◆ Vec

template<class Data_T>
typedef std::vector<Ptr> EmptyField< Data_T >::Vec

Definition at line 94 of file EmptyField.h.

◆ class_type

template<class Data_T>
typedef EmptyField<Data_T> EmptyField< Data_T >::class_type

Definition at line 126 of file EmptyField.h.

◆ base

template<class Data_T>
typedef ResizableField<Data_T> EmptyField< Data_T >::base
private

Definition at line 173 of file EmptyField.h.

Constructor & Destructor Documentation

◆ EmptyField()

template<class Data_T >
EmptyField< Data_T >::EmptyField ( )

Constructs an empty buffer.

Definition at line 182 of file EmptyField.h.

183  : base()
184 {
185  // Empty
186 }

Referenced by EmptyField< Data_T >::clone().

Member Function Documentation

◆ clear()

template<class Data_T>
void EmptyField< Data_T >::clear ( const Data_T &  value)
virtual

Clears all the voxels in the storage.

Reimplemented from WritableField< Data_T >.

Definition at line 191 of file EmptyField.h.

192 {
194 }

◆ constantvalue()

template<class Data_T >
const Data_T & EmptyField< Data_T >::constantvalue ( ) const
inline

Returns the constant value.

Definition at line 256 of file EmptyField.h.

257 {
258  return m_constantData;
259 }

◆ setConstantvalue()

template<class Data_T>
void EmptyField< Data_T >::setConstantvalue ( const Data_T &  val)
inline

Sets the constant value.

Definition at line 248 of file EmptyField.h.

249 {
250  m_constantData = val;
251 }

◆ value()

template<class Data_T >
Data_T EmptyField< Data_T >::value ( int  i,
int  j,
int  k 
) const
virtual

Read access to a voxel. The coordinates are in integer voxel space .

Note
Before the internal storage is accessed, the subclass must compute the data window coordinates by looking at Field::m_dataWindow.
Virtual functions are known not to play nice with threading. Therefor, concrete classes can implement (by convention) fastValue() as a non-virtual function.

Implements Field< Data_T >.

Definition at line 199 of file EmptyField.h.

200 {
201  assert (i >= base::m_dataWindow.min.x);
202  assert (i <= base::m_dataWindow.max.x);
203  assert (j >= base::m_dataWindow.min.y);
204  assert (j <= base::m_dataWindow.max.y);
205  assert (k >= base::m_dataWindow.min.z);
206  assert (k <= base::m_dataWindow.max.z);
207 
208  UNUSED(i);
209  UNUSED(j);
210  UNUSED(k);
211 
212  // Access data
213  return m_default;
214 }

References detail::max(), detail::min(), and UNUSED.

◆ memSize()

template<class Data_T >
long long int EmptyField< Data_T >::memSize ( ) const
virtual

Returns the memory usage (in bytes)

Note
This needs to be re-implemented for any subclass that adds data members. Those classes should also call their superclass and add the combined memory use.

Reimplemented from FieldRes.

Definition at line 219 of file EmptyField.h.

220 {
221  long long int superClassMemSize = base::memSize();
222  return sizeof(*this) + superClassMemSize;
223 }

◆ staticClassName()

template<class Data_T>
static const DEFINE_FIELD_RTTI_CONCRETE_CLASS char* EmptyField< Data_T >::staticClassName ( )
inlinestatic

Definition at line 129 of file EmptyField.h.

130  {
131  return staticClassType();
132  }

References EmptyField< Data_T >::staticClassType().

◆ staticClassType()

template<class Data_T>
static const char* EmptyField< Data_T >::staticClassType ( )
inlinestatic

Definition at line 134 of file EmptyField.h.

135  {
136  return "EmptyField";
137  }

Referenced by EmptyField< Data_T >::staticClassName().

◆ lvalue()

template<class Data_T >
Data_T & EmptyField< Data_T >::lvalue ( int  i,
int  j,
int  k 
)
virtual

Write access to a voxel. The coordinates are global coordinates.

Note
Before the internal storage is accessed, the subclass must compute the crop window coordinates by looking at Field::m_dataWindow.
This is named differently from the const value so that non-const objects still have a clear way of accessing data in a const way.
Virtual functions are known not to play nice with threading. Therefor, concrete classes can implement (by convention) fastLValue() as a non-virtual function.

Implements WritableField< Data_T >.

Definition at line 228 of file EmptyField.h.

229 {
230  assert (i >= base::m_dataWindow.min.x);
231  assert (i <= base::m_dataWindow.max.x);
232  assert (j >= base::m_dataWindow.min.y);
233  assert (j <= base::m_dataWindow.max.y);
234  assert (k >= base::m_dataWindow.min.z);
235  assert (k <= base::m_dataWindow.max.z);
236 
237  UNUSED(i);
238  UNUSED(j);
239  UNUSED(k);
240 
241  // Access data
242  return m_ignoredData;
243 }

References detail::max(), detail::min(), and UNUSED.

◆ clone()

template<class Data_T>
virtual FIELD3D_CLASSNAME_CLASSTYPE_IMPLEMENTATION FieldBase::Ptr EmptyField< Data_T >::clone ( ) const
inlinevirtual

Returns a pointer to a copy of the field, pure virtual so ensure derived classes properly implement it.

Implements FieldBase.

Definition at line 153 of file EmptyField.h.

154  { return Ptr(new EmptyField(*this)); }

References EmptyField< Data_T >::EmptyField().

Member Data Documentation

◆ m_default

template<class Data_T>
Data_T EmptyField< Data_T >::m_default
protected

Field default value.

Definition at line 163 of file EmptyField.h.

◆ m_ignoredData

template<class Data_T>
Data_T EmptyField< Data_T >::m_ignoredData
protected

Dummy variable for assignment.

Definition at line 165 of file EmptyField.h.

◆ m_constantData

template<class Data_T>
Data_T EmptyField< Data_T >::m_constantData
protected

Field constant value.

Definition at line 167 of file EmptyField.h.


The documentation for this class was generated from the following file:
EmptyField::m_default
Data_T m_default
Field default value.
Definition: EmptyField.h:163
FieldRes::m_dataWindow
Box3i m_dataWindow
Defines the area where data is allocated. This should be treated as a closed (i.e....
Definition: Field.h:310
EmptyField::Ptr
boost::intrusive_ptr< EmptyField > Ptr
Definition: EmptyField.h:93
EmptyField::staticClassType
static const char * staticClassType()
Definition: EmptyField.h:134
EmptyField::value
virtual Data_T value(int i, int j, int k) const
Read access to a voxel. The coordinates are in integer voxel space .
Definition: EmptyField.h:199
UNUSED
#define UNUSED(p)
Definition: EmptyField.h:65
detail::max
T max(const T a, const T2 b)
Max operation on mixed types.
Definition: FieldSampler.h:32
EmptyField::m_constantData
Data_T m_constantData
Field constant value.
Definition: EmptyField.h:167
FieldRes::memSize
virtual long long int memSize() const
Returns the memory usage (in bytes)
Definition: Field.h:279
EmptyField::base
ResizableField< Data_T > base
Definition: EmptyField.h:173
EmptyField::m_ignoredData
Data_T m_ignoredData
Dummy variable for assignment.
Definition: EmptyField.h:165
EmptyField::EmptyField
EmptyField()
Constructs an empty buffer.
Definition: EmptyField.h:182
detail::min
T min(const T a, const T2 b)
Min operation on mixed types.
Definition: FieldSampler.h:25