imchar.h

3D Game Engine Design Source Code非常棒

#ifndef IMCHAR_H
#define IMCHAR_H

#include "imagbase.h"
#include "imagfile.h"

class mgcImageChar : public mgcImage
{
// object information
public:
	// image creation
	mgcImageChar ();
	mgcImageChar (int _dimensions, const int* initial);
	mgcImageChar (int _dimensions, int initial_all);
	mgcImageChar (int _dimensions, int initial0, int initial1, ...);
	mgcImageChar (const mgcImage& image);
	mgcImageChar (const mgcLattice& lattice);

	// image file access
	mgcImageChar (char* fname);
	mgcImage& Load (char* fname, int trgt = -1);
	mgcImage& Save (char* fname, int trgt = -1);
	mgcImage& SaveAs (char* fname, int ff, int trgt = -1);

	// element access
	char* operator() () { return (char*)data; }
	char& operator[] (int i) const
		{ return *(char*)(data+size*i); }
	char& operator() (int x) const
		{ return *(char*)(data+size*x); }
	char& operator() (int x, int y) const
		{ return *(char*)(data+size*Index(x,y)); }
	char& operator() (int x, int y, int z) const
		{ return *(char*)(data+size*Index(x,y,z)); }
	char& operator() (int x, int y, int z, int w) const
		{ return *(char*)(data+size*Index(x,y,z,w)); }
	char& operator() (const mgcCoordinate& coordinate) const
		{ return *(char*)(data+size*Index(coordinate)); }

	// assignments and comparisons
    mgcImageChar& operator= (const mgcImageChar& image);
	mgcImageChar& operator= (const mgcImage& image);
	mgcImageChar& operator= (char value);
	int operator== (const mgcImage& image);
	int operator== (char value);
	int operator!= (const mgcImage& image)  { return !( *this == image ); }
	int operator!= (char value)  { return !( *this == value ); }

	// arithmetic updates
	static char zero_divide_result;
	mgcImageChar& operator+= (const mgcImageChar &image);
	mgcImageChar& operator-= (const mgcImageChar &image);
	mgcImageChar& operator*= (const mgcImageChar &image);
	mgcImageChar& operator/= (const mgcImageChar &image);
	mgcImageChar& operator+= (char value);
	mgcImageChar& operator-= (char value);
	mgcImageChar& operator*= (char value);
	mgcImageChar& operator/= (char value);

	// arithmetic operations
	mgcImageChar operator- ();
	mgcImageChar operator+ (const mgcImageChar &image);
	mgcImageChar operator- (const mgcImageChar &image);
	mgcImageChar operator* (const mgcImageChar &image);
	mgcImageChar operator/ (const mgcImageChar &image);
	mgcImageChar operator+ (char value);
	mgcImageChar operator- (char value);
	mgcImageChar operator* (char value);
	mgcImageChar operator/ (char value);
	friend mgcImageChar operator+ (char value, mgcImageChar &image);
	friend mgcImageChar operator- (char value, mgcImageChar &image);
	friend mgcImageChar operator* (char value, mgcImageChar &image);
	friend mgcImageChar operator/ (char value, mgcImageChar &image);

	// pixel statistics
	char Min () const { return minimum; }
	char Max () const { return maximum; }
	void Min (char value)  { minimum = value; }
	void Max (char value)  { maximum = value; }
	void ComputeMaxMin ();

protected:
	char minimum, maximum;

// error handling
public:
	static int verbose;
	static unsigned error;
	static void Report (ostream& ostr);
private:
	static const unsigned zero_dimension;
    static const unsigned invalid_dimension;
	static const unsigned null_pixel_pointer;
	static const unsigned incompatible_images;
	static const unsigned get_data_failed;
	static const unsigned put_data_failed;
	static const unsigned load_failed;
	static const unsigned save_failed;
	static const char* message[8];
	static int Number (unsigned single_error);
	static void Report (unsigned single_error);
};

#endif