DataFileIF Class Reference

#include <DataFileIF.H>

Inheritance diagram for DataFileIF:

Inheritance graph
[legend]

List of all members.


Detailed Description

This implicit function reads data from a file and produces function values from the data read. The data lies on a rectilinear grid where the number of grid points in each direction, the spacing, and the origin are specified (by the user or in the file). Function values within the data region are obtained using trilinear interpolation. Function values outside the data region are the maximum value of the data read.

The data can be read from standard input or a named file. The data can have no header, an ASCII header containing the number of grid points in each direction:

         numX numY [numZ]
    
or an ASCII header containing the above information followed by the data spacing in each direction and the origin of the data - both in physical coordinates:
         deltaX  deltaY  [deltaZ]
         originX originY [originZ]
    
Following any header is the data either in ASCII or binary. The data is assumed to vary most rapidly in the x coordinate, then the y coordinate, and, finally, in the z coordinate (for 3D data).

Public Types

enum  DataType { Invalid = -1, ASCII = 0, Binary, NUMDATATYPES }

Public Member Functions

 DataFileIF (const DataFileIF::DataType &a_dataType, const Real &a_value, const bool &a_inside)
 DataFileIF (const char *const a_filename, const DataFileIF::DataType &a_dataType, const Real &a_value, const bool &a_inside)
 DataFileIF (const DataFileIF::DataType &a_dataType, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
 DataFileIF (const char *const a_filename, const DataFileIF::DataType &a_dataType, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
 DataFileIF (const DataFileIF::DataType &a_dataType, const IntVect &a_num, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
 DataFileIF (const char *const a_filename, const DataFileIF::DataType &a_dataType, const IntVect &a_num, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
 DataFileIF (const DataFileIF &a_inputIF)
 Copy constructor.
 DataFileIF (const RefCountedPtr< FArrayBox > a_ascii_data, const RefCountedPtr< BaseFab< unsigned char > > a_binary_data, const Real &a_noDataValue, const IntVect &a_num, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
virtual ~DataFileIF ()
 Destructor.
virtual void GetHeader (IntVect &a_num, RealVect &a_spacing, RealVect &a_origin) const
virtual void GetParams (Real &a_value, bool &a_inside) const
virtual void SetParams (const Real &a_value, const bool &a_inside)
virtual void SetNoDataValue (const Real &a_value)
virtual Real value (const RealVect &a_point) const
virtual BaseIFnewImplicitFunction () const
void GetFullHeader (IntVect &a_num, RealVect &a_spacing, RealVect &a_origin)

Protected Member Functions

void OpenFile (ifstream &a_file, const char *const a_filename)
void CloseFile (ifstream &a_file)
void ReadMinHeader (IntVect &a_num, istream &a_file)
void ReadFullHeader (IntVect &a_num, RealVect &a_spacing, RealVect &a_origin, istream &a_file)
void ReadData (Real &a_maxValue, istream &a_file, const DataFileIF::DataType &a_dataType, const IntVect &a_num)
void MakeCorners (void)

Protected Attributes

IntVect m_num
RealVect m_spacing
RealVect m_origin
Real m_value
bool m_inside
RefCountedPtr< FArrayBoxm_ascii_data
RefCountedPtr< BaseFab
< unsigned char > > 
m_binary_data
Real m_noDataValue
IntVectSet m_corners

Private Member Functions

 DataFileIF ()
void operator= (const DataFileIF &a_inputIF)

Member Enumeration Documentation

Type of data being read

Enumerator:
Invalid 
ASCII 
Binary 
NUMDATATYPES 


Constructor & Destructor Documentation

DataFileIF::DataFileIF ( const DataFileIF::DataType a_dataType,
const Real a_value,
const bool &  a_inside 
)

Constructor specifying the form of the data (a_dataType - ASCII or Binary), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from standard input and a complete ASCII header (see above) is excepted.

DataFileIF::DataFileIF ( const char *const   a_filename,
const DataFileIF::DataType a_dataType,
const Real a_value,
const bool &  a_inside 
)

Constructor specifying filename (a_filename), the form of the data (a_dataType - ASCII or Binary), level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from the file named and a complete ASCII header (see above) is expected.

DataFileIF::DataFileIF ( const DataFileIF::DataType a_dataType,
const RealVect a_spacing,
const RealVect a_origin,
const Real a_value,
const bool &  a_inside 
)

Constructor specifying the form of the data (a_dataType - ASCII or Binary), the spacing (a_spacing), the physical origin (a_origin), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from standard input and an ASCII header (see above) containing the number of grid points in each direction is excepted.

DataFileIF::DataFileIF ( const char *const   a_filename,
const DataFileIF::DataType a_dataType,
const RealVect a_spacing,
const RealVect a_origin,
const Real a_value,
const bool &  a_inside 
)

Constructor specifying filename (a_filename), the form of the data (a_dataType - ASCII or Binary), the spacing (a_spacing), the physical origin (a_origin), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from the file named and an ASCII header (see above) containing the number of grid points in each direction is excepted.

DataFileIF::DataFileIF ( const DataFileIF::DataType a_dataType,
const IntVect a_num,
const RealVect a_spacing,
const RealVect a_origin,
const Real a_value,
const bool &  a_inside 
)

Constructor specifying the form of the data (a_dataType - ASCII or Binary), the spacing (a_spacing), the physical origin (a_origin), the number of grid points in each direction (a_num), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from standard input and no ASCII header (see above) is excepted.

DataFileIF::DataFileIF ( const char *const   a_filename,
const DataFileIF::DataType a_dataType,
const IntVect a_num,
const RealVect a_spacing,
const RealVect a_origin,
const Real a_value,
const bool &  a_inside 
)

Constructor specifying filename (a_filename), the form of the data (a_dataType - ASCII or Binary), the spacing (a_spacing), the physical origin (a_origin), the number of grid points in each direction (a_num), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from the file named and no ASCII header (see above) is excepted.

DataFileIF::DataFileIF ( const DataFileIF a_inputIF  ) 

Copy constructor.

DataFileIF::DataFileIF ( const RefCountedPtr< FArrayBox a_ascii_data,
const RefCountedPtr< BaseFab< unsigned char > >  a_binary_data,
const Real a_noDataValue,
const IntVect a_num,
const RealVect a_spacing,
const RealVect a_origin,
const Real a_value,
const bool &  a_inside 
)

This is used by the factory (see below) to create a new object. All objects created in this way share a refcounted pointer to their data.

Constructor specifying a refcounted pointer to the data (a_ascii_data or a_binary_data), the no data value (a_noDataValue), the spacing (a_spacing), the physical origin (a_origin), the number of grid points in each direction (a_num), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside).

virtual DataFileIF::~DataFileIF (  )  [virtual]

Destructor.

DataFileIF::DataFileIF (  )  [inline, private]

References MayDay::Abort().


Member Function Documentation

virtual void DataFileIF::GetHeader ( IntVect a_num,
RealVect a_spacing,
RealVect a_origin 
) const [virtual]

Return the header information

virtual void DataFileIF::GetParams ( Real a_value,
bool &  a_inside 
) const [virtual]

Return the parameter information

virtual void DataFileIF::SetParams ( const Real a_value,
const bool &  a_inside 
) [virtual]

Set the parameter information

virtual void DataFileIF::SetNoDataValue ( const Real a_value  )  [virtual]

value to use when we are outside

virtual Real DataFileIF::value ( const RealVect a_point  )  const [virtual]

Return the value of the function at a_point using trilinear interpolation of the data. If a_point is outside the data then return the maximum data value.

Implements BaseIF.

virtual BaseIF* DataFileIF::newImplicitFunction (  )  const [virtual]

Return a newly allocated derived class. The responsibility for deleting the memory is left to the calling function.

Implements BaseIF.

void DataFileIF::GetFullHeader ( IntVect a_num,
RealVect a_spacing,
RealVect a_origin 
) [inline]

References m_num, m_origin, and m_spacing.

void DataFileIF::OpenFile ( ifstream &  a_file,
const char *const   a_filename 
) [protected]

void DataFileIF::CloseFile ( ifstream &  a_file  )  [protected]

void DataFileIF::ReadMinHeader ( IntVect a_num,
istream &  a_file 
) [protected]

void DataFileIF::ReadFullHeader ( IntVect a_num,
RealVect a_spacing,
RealVect a_origin,
istream &  a_file 
) [protected]

void DataFileIF::ReadData ( Real a_maxValue,
istream &  a_file,
const DataFileIF::DataType a_dataType,
const IntVect a_num 
) [protected]

void DataFileIF::MakeCorners ( void   )  [protected]

void DataFileIF::operator= ( const DataFileIF a_inputIF  )  [inline, private]

References MayDay::Abort().


Member Data Documentation

Referenced by GetFullHeader().

Referenced by GetFullHeader().

Referenced by GetFullHeader().

bool DataFileIF::m_inside [protected]

RefCountedPtr<BaseFab<unsigned char> > DataFileIF::m_binary_data [protected]


The documentation for this class was generated from the following file:

Generated on Mon Nov 20 03:42:56 2017 for Chombo + EB by  doxygen 1.5.5