imulong.cpp

3D Game Engine Design Source Code非常棒

#include <fstream.h>
#include <string.h>
#include "imulong.h"

// error handling
int mgcImageUlong::verbose = 0;
unsigned mgcImageUlong::error = 0;
const unsigned mgcImageUlong::zero_dimension      = 0x00000001;
const unsigned mgcImageUlong::invalid_dimension   = 0x00000002;
const unsigned mgcImageUlong::null_pixel_pointer  = 0x00000004;
const unsigned mgcImageUlong::get_data_failed     = 0x00000008;
const unsigned mgcImageUlong::put_data_failed     = 0x00000010;
const unsigned mgcImageUlong::load_failed         = 0x00000020;
const unsigned mgcImageUlong::save_failed         = 0x00000040;
const char* mgcImageUlong::message[7] = {
	"zero dimension in argument list",
	"invalid dimension in variable argument list",
	"null pointer in assignment",
	"attempt to read file data failed",
	"attempt to write file data failed",
	"attempt to load file failed",
	"attempt to save file failed"
};

//===========================================================================
mgcImageUlong::
mgcImageUlong () :
	mgcImage(mgcUlong::type)
{
}
//---------------------------------------------------------------------------
mgcImageUlong::
mgcImageUlong (int _dimensions, const int* initial) :
	mgcImage(mgcUlong::type,_dimensions,initial)
{
}
//---------------------------------------------------------------------------
mgcImageUlong::mgcImageUlong (int _dimensions, int initial_all) :
	mgcImage(mgcUlong::type,_dimensions,initial_all)
{
}
//---------------------------------------------------------------------------
mgcImageUlong::
mgcImageUlong (int _dimensions, int initial0, int initial1, ...) :
	mgcImage(mgcUlong::type)
{
	if ( _dimensions < 2 ) {
		Report(invalid_dimension);
		return;
	}

	int* initial = new int[_dimensions];
	initial[0] = initial0;
	initial[1] = initial1;

	va_list ap;
	va_start(ap,initial1);
	for (int d = 2; d < _dimensions; d++)
		initial[d] = va_arg(ap,int);
	va_end(ap);

	*(mgcImage*)this = mgcImage(mgcUlong::type,_dimensions,initial);
	delete[] initial;
}
//---------------------------------------------------------------------------
mgcImageUlong::
mgcImageUlong (const mgcImage& image) :
	mgcImage(mgcUlong::type,image.Dimensions(),image.Bounds())
{
	*(mgcImage*)this = image;
}
//---------------------------------------------------------------------------
mgcImageUlong::
mgcImageUlong (const mgcLattice& lattice) :
	mgcImage(mgcUlong::type,lattice.Dimensions(),lattice.Bounds())
{
}
//---------------------------------------------------------------------------
mgcImageUlong::
mgcImageUlong (char* fname) :
	mgcImage(mgcUlong::type)
{
	Load(fname);
}
//---------------------------------------------------------------------------
mgcImage& mgcImageUlong::
Load (char* fname, int trgt)
{
	if ( trgt == -1 )
		trgt = mgcUlong::type;
	mgcImage::Load(fname,trgt);
	return *this;
}
//---------------------------------------------------------------------------
mgcImage& mgcImageUlong::
Save (char* fname, int trgt)
{
	if ( trgt == -1 )
		trgt = mgcUlong::type;
	mgcImage::Save(fname,trgt);
	return *this;
}
//---------------------------------------------------------------------------
mgcImage& mgcImageUlong::
SaveAs (char* fname, int ff, int trgt)
{
	if ( trgt == -1 )
		trgt = mgcUlong::type;
	mgcImage::SaveAs(fname,ff,trgt);
	return *this;
}
//---------------------------------------------------------------------------
mgcImageUlong& mgcImageUlong::
operator= (const mgcImageUlong& image)
{
	if ( *(mgcLattice*)this != *(mgcLattice*)&image ) {
		*(mgcImage*)this = image;
		return *this;
	}

	memcpy(data,image.data,size*quantity);
	return *this;
}
//---------------------------------------------------------------------------
mgcImageUlong& mgcImageUlong::
operator= (const mgcImage& image)
{
	*(mgcImage*)this = image;
	return *this;
}
//---------------------------------------------------------------------------
mgcImageUlong& mgcImageUlong::
operator= (unsigned long value)
{
	if ( data )
		for (int i = 0; i < quantity; i++)
			(*this)[i] = value;
	else
		Report(null_pixel_pointer);
	return *this;
}
//---------------------------------------------------------------------------
int mgcImageUlong::
operator== (const mgcImage& image)
{
	return *(mgcImage*)this == image;
}
//---------------------------------------------------------------------------
int mgcImageUlong::
operator== (unsigned long value)
{
	if ( data == 0 ) {
		Report(null_pixel_pointer);
		return 0;
	}

	for (int i = 0; i < quantity; i++)
		if ( (*this)[i] != value )
			return 0;
	return 1;
}
//---------------------------------------------------------------------------
void mgcImageUlong::
ComputeMaxMin ()
{
	minimum = maximum = (*this)[0];

	for (int i = 1; i < quantity; i++) {
		unsigned long value = (*this)[i];
		if ( value < minimum )
			minimum = value;
		else if ( value > maximum )
			maximum = value;
	}
}
//---------------------------------------------------------------------------
int mgcImageUlong::
Number (unsigned single_error)
{
	int result;
	for (result = -1; single_error; single_error >>= 1)
		result++;
	return result;
}
//---------------------------------------------------------------------------
void mgcImageUlong::
Report (unsigned single_error)
{
	if ( verbose || mgcImage::verbose || mgcLattice::verbose )
		cout << "mgcImageUlong: " << message[Number(single_error)] << endl;
	else
		ofstream("imulong.err",ios::out|ios::app)
			 << "mgcImageUlong: " << message[Number(single_error)] << endl;

	error |= single_error;
}
//---------------------------------------------------------------------------
void mgcImageUlong::
Report (ostream& ostr)
{
	for (unsigned single_error = 1; single_error; single_error <<= 1)
		if ( error & single_error )
			ostr << "mgcImageUlong: " << message[Number(single_error)]
				 << endl;

	error = 0;
}
//===========================================================================