HLPL2/Sem1/main.cpp

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#include <iostream>
#include <fstream>
#include <string>
using namespace std;
/*
*------> x
|0 1 2
|3 4 5
|6 7 8
y
*/
class Image
{
uint mx;
uint my;
uint *data;
public:
Image(uint tmx, uint tmy)
{ // Должен инициализировать изображение 0
mx = tmx;
my = tmy;
data = (uint *)malloc(sizeof(uint) * mx * my);
for (uint y = 0; y < my; y++)
{
for (uint x = 0; x < mx; x++)
{
data[mx * y + x] = 27;
}
}
}
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void freemem()
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{
free(data);
}
int getMx()
{
return mx;
}
int getMy()
{
return my;
}
void show()
{ // Должен выдавать на экран изображение при помощи printf или std::cout
for (uint y = 0; y < my; y++)
{
for (uint x = 0; x < mx; x++)
{
cout << "\033[48;5;" << data[mx * y + x] << "m \033[0m";
}
cout << "\n";
}
cout << "\n";
}
int get(uint x, uint y)
{
return data[mx * (y) + (x)];
}
void set(uint x, uint y, uint color)
{
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if (x >= mx)
{
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throw(x);
}
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if (y >= my)
{
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throw(y);
}
data[mx * (y) + (x)] = color;
}
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void copy(Image &original)
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{
freemem();
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mx = original.getMx();
my = original.getMy();
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data = (uint *)malloc(sizeof(uint) * mx * my);
for (uint y = 0; y < my; y++)
{
for (uint x = 0; x < mx; x++)
{
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data[mx * y + x] = original.get(x, y);
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}
}
}
// Returns true if equal
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bool compare(Image &original)
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{
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if (original.getMx() == mx && original.getMy() == my)
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{
for (uint y = 0; y < my; y++)
{
for (uint x = 0; x < mx; x++)
{
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if (data[mx * y + x] != original.get(x, y))
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{
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cout << "Not equal: x = " << x << "; y = " << y << "\n";
return false;
}
}
}
return true;
}
else
{
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cout << "original size: " << original.getMx() << "x" << original.getMy() << "\n";
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cout << "current size: " << mx << "x" << my << "\n";
return false;
}
}
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void draw_horizontal(uint y, uint color)
{
if (y >= my)
{
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throw(y);
}
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for (uint x = 0; x < mx; x++)
{
data[mx * y + x] = color;
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}
}
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void draw_vertical(uint x, uint color)
{
if (x >= mx)
{
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throw(x);
}
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for (uint y = 0; y < my; y++)
{
data[mx * y + x] = color;
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}
}
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void save_to_file(string filename)
{
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ofstream writefile;
writefile.open(filename);
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if (writefile.is_open())
{
writefile << mx << "\n"
<< my << "\n";
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for (uint y = 0; y < my; y++)
{
for (uint x = 0; x < mx; x++)
{
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writefile << data[mx * y + x] << "\n";
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}
}
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writefile << "\n";
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writefile.close();
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}
else
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{
cerr << "saving to file failed\n";
}
}
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void read_from_file(string filename)
{
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string line;
ifstream readfile;
readfile.open(filename);
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if (readfile.is_open())
{
try
{
getline(readfile, line);
mx = stoi(line);
getline(readfile, line);
my = stoi(line);
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for (uint y = 0; y < my; y++)
{
for (uint x = 0; x < mx; x++)
{
getline(readfile, line);
data[mx * y + x] = stoi(line);
}
}
}
catch (const exception &e)
{
cerr << e.what() << '\n';
}
}
else
{
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cerr << "reading file failed";
}
readfile.close();
}
};
Image a(30, 10);
Image b(25, 15);
int main()
{
cout << "Image a \n";
a.show();
cout << "Image b \n";
b.show();
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b.copy(a);
if (b.compare(a) == true)
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{
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cout << "a == b after copy\n";
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}
else
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{
cout << "a != b after copy!\n";
}
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b.set(4, 3, 20);
for (int i = 5; i < 9; i++)
{
b.set(i, 5, 45);
}
b.set(9, 3, 20);
cout << "Image b, copied from a and edited \n";
b.show();
b.draw_horizontal(8, 214);
cout << "Image b, with a horizontal line \n";
b.show();
b.save_to_file("image");
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a.read_from_file("image");
cout << "Image a, read from file \n";
a.show();
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a.freemem();
b.freemem();
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return 0;
}