ossimAigHeader Class Reference

#include <ossimAigHeader.h>

Public Member Functions
	ossimAigHeader ()
void	reset ()
bool	writeStream (std::ostream &out)
void	setFloatCoverage ()
void	setIntCoverage ()

Public Attributes
char	theMagic [8]
char	theUnknownData [8]
ossim_int32	theCellType
char	theUnknownAssortedData [236]
double	thePixelSizeX
double	thePixelSizeY
double	theUnknownGeoReferencingValues [2]
int	theNumberOfTilesPerRow
int	theNumberOfTilesPerColumn
int	theWidthOfTileInPixels
int	theUnknownValue
int	theHeightOfTileInPixels

Friends
std::ostream &	operator<< (std::ostream &out, const ossimAigHeader &header)

Detailed Description

Definition at line 16 of file ossimAigHeader.h.

Constructor & Destructor Documentation

ossimAigHeader()

ossimAigHeader::ossimAigHeader ( )

inline

Definition at line 32 of file ossimAigHeader.h.

References reset().

      {
         reset();
      }

Member Function Documentation

reset()

void ossimAigHeader::reset ( void  )

inline

Definition at line 37 of file ossimAigHeader.h.

References setIntCoverage(), theHeightOfTileInPixels, theMagic, theNumberOfTilesPerColumn, theNumberOfTilesPerRow, thePixelSizeX, thePixelSizeY, theUnknownAssortedData, theUnknownData, theUnknownGeoReferencingValues, theUnknownValue, and theWidthOfTileInPixels.

Referenced by ossimAigHeader().

      {
         memset(theMagic, '\0', 8);
         strcpy(theMagic, "GRID1.2");
         memset(theUnknownData, '\0', 8);
         setIntCoverage();
         memset(theUnknownAssortedData, '\0', 236);
         thePixelSizeX = 1.0;
         thePixelSizeY = 1.0;
         theUnknownGeoReferencingValues[0] = 0.0;
         theUnknownGeoReferencingValues[1] = 0.0;
         theNumberOfTilesPerRow = 0;
         theNumberOfTilesPerColumn = 0;
         theWidthOfTileInPixels = 0;
         theUnknownValue = 1;
         theHeightOfTileInPixels = 0;
      }

setFloatCoverage()

void ossimAigHeader::setFloatCoverage ( )

inline

Definition at line 57 of file ossimAigHeader.h.

References theCellType.

Referenced by ossimArcInfoGridWriter::writeBinaryAigHeader().

      {
         theCellType = 2;
      }

setIntCoverage()

void ossimAigHeader::setIntCoverage ( )

inline

Definition at line 61 of file ossimAigHeader.h.

References theCellType.

Referenced by reset().

      {
         theCellType = 1;
      }

writeStream()

bool ossimAigHeader::writeStream

(

std::ostream &

out

)

Definition at line 12 of file ossimAigHeader.cpp.

References ossimEndian::getSystemEndianType(), OSSIM_LITTLE_ENDIAN, ossimEndian::swap(), theCellType, theHeightOfTileInPixels, theMagic, theNumberOfTilesPerColumn, theNumberOfTilesPerRow, thePixelSizeX, thePixelSizeY, theUnknownAssortedData, theUnknownData, theUnknownValue, and theWidthOfTileInPixels.

{
   ossimEndian endian;
   double          tempDouble;
   ossim_uint32    tempInt;
   
   if(endian.getSystemEndianType() == OSSIM_LITTLE_ENDIAN)
   {
      out.write((char*)theMagic, 8);
      out.write((char*)theUnknownData, 8);
      tempInt = theCellType;
      endian.swap(tempInt);
      out.write((char*)&tempInt, 4);
      
      out.write((char*)theUnknownAssortedData, 236);
      tempDouble = thePixelSizeX;
      endian.swap(tempDouble);
      out.write((char*)(&tempDouble), 8);
      tempDouble = thePixelSizeY;
      endian.swap(tempDouble);
      out.write((char*)(&tempDouble), 8);
      tempDouble = 0.0;
      endian.swap(tempDouble);
      out.write((char*)(&tempDouble), 8);
      out.write((char*)(&tempDouble), 8);

      tempInt = theNumberOfTilesPerRow;
      endian.swap(tempInt);
      out.write((char*)&tempInt, 4);
      
      tempInt = theNumberOfTilesPerColumn;
      endian.swap(tempInt);
      out.write((char*)&tempInt, 4);

      tempInt = theWidthOfTileInPixels;
      endian.swap(tempInt);
      out.write((char*)&tempInt, 4);

      tempInt = theUnknownValue;
      endian.swap(tempInt);
      out.write((char*)&tempInt, 4);

      tempInt = theHeightOfTileInPixels;
      endian.swap(tempInt);
      out.write((char*)&tempInt, 4);
   }
   else
   {
      out.write((char*)theMagic, 8);
      out.write((char*)theUnknownData, 8);
      out.write((char*)&theCellType, 4);
      out.write((char*)theUnknownAssortedData, 236);
      out.write((char*)(&thePixelSizeX), 8);
      out.write((char*)(&thePixelSizeY), 8);
      tempDouble = 0.0;
      out.write((char*)(&tempDouble), 8);
      out.write((char*)(&tempDouble), 8);
      out.write((char*)&theNumberOfTilesPerRow, 4);
      out.write((char*)&theNumberOfTilesPerColumn, 4);
      out.write((char*)&theWidthOfTileInPixels, 4);
      out.write((char*)&theUnknownValue, 4);
      out.write((char*)&theHeightOfTileInPixels, 4);
   }

   return true;
}

Friends And Related Function Documentation

operator<<

std::ostream& operator<< ( std::ostream &  out, const ossimAigHeader &  header  )

friend

Definition at line 19 of file ossimAigHeader.h.

      {
         out << "Magic number:  " << header.theMagic << std::endl
             << "Coverage:      " << (header.theCellType==1?"Integer":"float") << std::endl
             << "Pixel size x:  " << header.thePixelSizeX << std::endl
             << "Pixel size y:  " << header.thePixelSizeY << std::endl
             << "Tiles per row: " << header.theNumberOfTilesPerRow << std::endl
             << "Tiles per col: " << header.theNumberOfTilesPerColumn << std::endl
             << "Tile width:    " << header.theWidthOfTileInPixels << std::endl
             << "Tile height:   " << header.theHeightOfTileInPixels;
         
         return out;
      }

Member Data Documentation

theCellType

ossim_int32 ossimAigHeader::theCellType

1 means int cover and 2 means float cover

Definition at line 71 of file ossimAigHeader.h.

Referenced by setFloatCoverage(), setIntCoverage(), and writeStream().

theHeightOfTileInPixels

int ossimAigHeader::theHeightOfTileInPixels

Numer of pixels high the tile is. Usually the value is 4

Definition at line 111 of file ossimAigHeader.h.

Referenced by reset(), ossimArcInfoGridWriter::writeBinaryAigHeader(), and writeStream().

theMagic

char ossimAigHeader::theMagic[8]

Definition at line 65 of file ossimAigHeader.h.

Referenced by reset(), and writeStream().

theNumberOfTilesPerColumn

int ossimAigHeader::theNumberOfTilesPerColumn

This is the height of the file in tiles..

Definition at line 97 of file ossimAigHeader.h.

Referenced by reset(), ossimArcInfoGridWriter::writeBinaryAigHeader(), and writeStream().

theNumberOfTilesPerRow

int ossimAigHeader::theNumberOfTilesPerRow

This is the width of the file in tiles..

Definition at line 92 of file ossimAigHeader.h.

Referenced by reset(), ossimArcInfoGridWriter::writeBinaryAigHeader(), and writeStream().

thePixelSizeX

double ossimAigHeader::thePixelSizeX

Holds the width of the pixel in geo referenced coordinate. It's 1 otherwise

Definition at line 79 of file ossimAigHeader.h.

Referenced by reset(), and writeStream().

thePixelSizeY

double ossimAigHeader::thePixelSizeY

Holds the height of the pixel in geo referenced coordinate. It's 1 otherwise

Definition at line 85 of file ossimAigHeader.h.

Referenced by reset(), and writeStream().

theUnknownAssortedData

char ossimAigHeader::theUnknownAssortedData[236]

Definition at line 73 of file ossimAigHeader.h.

Referenced by reset(), and writeStream().

theUnknownData

char ossimAigHeader::theUnknownData[8]

Definition at line 66 of file ossimAigHeader.h.

Referenced by reset(), and writeStream().

theUnknownGeoReferencingValues

double ossimAigHeader::theUnknownGeoReferencingValues[2]

Definition at line 87 of file ossimAigHeader.h.

Referenced by reset().

theUnknownValue

int ossimAigHeader::theUnknownValue

Definition at line 105 of file ossimAigHeader.h.

Referenced by reset(), and writeStream().

theWidthOfTileInPixels

int ossimAigHeader::theWidthOfTileInPixels

Numer of pixels wide the tile is. Usually the value is 256

Definition at line 103 of file ossimAigHeader.h.

Referenced by reset(), ossimArcInfoGridWriter::writeBinaryAigHeader(), and writeStream().

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

• ossimAigHeader.h
• ossimAigHeader.cpp