Sem1 — first draft

Sem1/main.cpp

@@ -0,0 +1,211 @@
+#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;
+            }
+        }
+    }
+
+        void freemem()
+    {
+        free(data);
+    }
+
+    int getMx()
+    {
+        return mx;
+    }
+
+    int getMy()
+    {
+        return my;
+    }
+
+    void show()
+    { // Должен выдавать на экран изображение при помощи printf или std::cout
+        // TODO реализовать
+        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)
+    {
+        
+        // TODO реализовать логику
+        return data[mx * (y) + (x)];
+    }
+
+    void set(uint x, uint y, uint color)
+    {
+        if (x >= mx) {
+            throw(x);
+        }
+        if (y >= my) {
+            throw(y);
+        }
+        data[mx * (y) + (x)] = color;
+        // TODO реализовать логику
+    }
+
+    void copy(Image* original)
+    {
+        freemem();
+        mx = original->getMx();
+        my = original->getMy();
+        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] = original->get(x, y);
+            }
+        }
+    }
+
+    // Returns true if equal
+    bool compare(Image* original)
+    {
+        if (original->getMx() == mx && original->getMy() == my)
+        {
+            for (uint y = 0; y < my; y++)
+            {
+                for (uint x = 0; x < mx; x++)
+                {
+                    if (data[mx * y + x] != original->get(x, y)){
+                        cout << "Not equal: x = " << x << "; y = " << y << "\n";
+                        return false;
+                    }
+                }
+            }
+            return true;
+        }
+        else
+        {
+            cout << "original size: " << original->getMx() << "x" << original->getMy() << "\n";
+            cout << "current size: " << mx << "x" << my << "\n";
+            return false;
+        }
+    }
+
+    void draw_horizontal(uint y, uint color) {
+        if (y >= my) {
+            throw(y);
+        }
+        for (uint x = 0; x < mx; x++) {
+            data[mx*y + x] = color;
+        }
+    }
+
+    void draw_vertical(uint x, uint color) {
+        if (x >= mx) {
+            throw(x);
+        }
+        for (uint y = 0; y < my; y++) {
+            data[mx*y + x] = color;
+        }
+    }
+
+    void save_to_file(string filename) {
+        ofstream writefile;
+        writefile.open(filename);
+        if (writefile.is_open()){
+            writefile << mx << "\t" << my << "\n";
+            for (uint y = 0; y < my; y++)
+            {
+                for (uint x = 0; x < mx; x++)
+                {
+                    writefile << data[mx * y + x] << "\t";
+                }
+                writefile << "\n";
+            }
+            writefile.close();
+        } else
+        {
+            cerr << "saving to file failed\n";
+        }
+        
+    }
+
+    void read_from_file(string filename) {
+        string line;
+        ifstream readfile;
+        readfile.open(filename);
+        if(readfile.is_open()) {
+            // TODO
+
+        } else {
+            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();
+    b.copy(&a);
+    if (b.compare(&a) == true) {
+        cout << "a == b after copy\n";
+    } else
+    {
+        cout << "a != b after copy!\n";
+    }
+    
+    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");
+    return 0;
+}