opengl / rbgImage.h

[af1989e]

hello,
i m new to c++ and dev. and i m trying to write a programthat use opengl (glut) and rbgImage.h.
but i m having somme problems, that i can't figure out.

when i call " #include "RgbImage.h" ", dev gives me a error. It tell me that theres a problem in RgbImage.h.
when a open RgbImage.h, it tell me that theres are some syntax errors, but i can't find any. could any one help me please.

------///------------------////----------------//////----------------
/*
*
* RayTrace Software Package, release 1.0.4, February 2004.
*
* Author: Samuel R. Buss
*
* Software accompanying the book
* 3D Computer Graphics: A Mathematical Introduction with OpenGL,
* by S. Buss, Cambridge University Press, 2003.
*
* Software is "as-is" and carries no warranty. It may be used without
* restriction, but if you modify it, please change the filenames to
* prevent confusion between different versions. Please acknowledge
* all use of the software in any publications or products based on it.
*
* Bug reports: Sam Buss, [e-mail].
* Web page: http://math.ucsd.edu/~sbuss/MathCG
*
*/

#ifndef RGBIMAGE_H
#define RGBIMAGE_H

#include <stdio.h>
#include <assert.h>

/* Include the next line to turn off the routines that use OpenGL
* #define RGBIMAGE_DONT_USE_OPENGL*/

class RgbImage
{
public:
RgbImage();
RgbImage( const char* filename );
RgbImage( int numRows, int numCols ); // Initialize a blank bitmap of this size.
~RgbImage();

bool LoadBmpFile( const char *filename ); // Loads the bitmap from the specified file
bool WriteBmpFile( const char* filename ); // Write the bitmap to the specified file
#ifndef RGBIMAGE_DONT_USE_OPENGL
bool LoadFromOpenglBuffer(); // Load the bitmap from the current OpenGL buffer
#endif

long GetNumRows() const { return NumRows; }
long GetNumCols() const { return NumCols; }
// Rows are word aligned
long GetNumBytesPerRow() const { return ((3*NumCols+3)>>2)<<2; }
const void* ImageData() const { return (void*)ImagePtr; }

const unsigned char* GetRgbPixel( long row, long col ) const;
unsigned char* GetRgbPixel( long row, long col );
void GetRgbPixel( long row, long col, float* red, float* green, float* blue ) const;
void GetRgbPixel( long row, long col, double* red, double* green, double* blue ) const;

void SetRgbPixelf( long row, long col, double red, double green, double blue );
void SetRgbPixelc( long row, long col,
unsigned char red, unsigned char green, unsigned char blue );

// Error reporting. (errors also print message to stderr)
int GetErrorCode() const { return ErrorCode; }
enum {
NoError = 0,
OpenError = 1, // Unable to open file for reading
FileFormatError = 2, // Not recognized as a 24 bit BMP file
MemoryError = 3, // Unable to allocate memory for image data
ReadError = 4, // End of file reached prematurely
WriteError = 5 // Unable to write out data (or no date to write out)
};
bool ImageLoaded() const { return (ImagePtr!=0); } // Is an image loaded?

void Reset(); // Frees image data memory

private:
unsigned char* ImagePtr; // array of pixel values (integers range 0 to 255)
long NumRows; // number of rows in image
long NumCols; // number of columns in image
int ErrorCode; // error code

static short readShort( FILE* infile );
static long readLong( FILE* infile );
static void skipChars( FILE* infile, int numChars );
static void RgbImage::writeLong( long data, FILE* outfile );
static void RgbImage::writeShort( short data, FILE* outfile );

static unsigned char doubleToUnsignedChar( double x );

};

inline RgbImage::RgbImage()
{
NumRows = 0;
NumCols = 0;
ImagePtr = 0;
ErrorCode = 0;
}

inline RgbImage::RgbImage( const char* filename )
{
NumRows = 0;
NumCols = 0;
ImagePtr = 0;
ErrorCode = 0;
LoadBmpFile( filename );
}

inline RgbImage::~RgbImage()
{
delete[] ImagePtr;
}

// Returned value points to three "unsigned char" values for R,G,B
inline const unsigned char* RgbImage::GetRgbPixel( long row, long col ) const
{
assert ( row<NumRows && col<NumCols );
const unsigned char* ret = ImagePtr;
long i = row*GetNumBytesPerRow() + 3*col;
ret += i;
return ret;
}

inline unsigned char* RgbImage::GetRgbPixel( long row, long col )
{
assert ( row<NumRows && col<NumCols );
unsigned char* ret = ImagePtr;
long i = row*GetNumBytesPerRow() + 3*col;
ret += i;
return ret;
}

inline void RgbImage::GetRgbPixel( long row, long col, float* red, float* green, float* blue ) const
{
assert ( row<NumRows && col<NumCols );
const unsigned char* thePixel = GetRgbPixel( row, col );
const float f = 1.0f/255.0f;
*red = f*(float)(*(thePixel++));
*green = f*(float)(*(thePixel++));
*blue = f*(float)(*thePixel);
}

inline void RgbImage::GetRgbPixel( long row, long col, double* red, double* green, double* blue ) const
{
assert ( row<NumRows && col<NumCols );
const unsigned char* thePixel = GetRgbPixel( row, col );
const double f = 1.0/255.0;
*red = f*(double)(*(thePixel++));
*green = f*(double)(*(thePixel++));
*blue = f*(double)(*thePixel);
}

inline void RgbImage::Reset()
{
NumRows = 0;
NumCols = 0;
delete[] ImagePtr;
ImagePtr = 0;
ErrorCode = 0;
}


#endif // RGBIMAGE_H

[af1989e]

i don't know what the problem is, or if i m using a wrong complicator settings . tks

[srikanth chitturi]

You can download RgbImage.h and RgbImage.cpp at http://www.math.ucsd.edu/~sbuss/MathCG/index.html .

use that code.