Lab3_Q1

#include <iostream>
#include <fstream>;

using namespace std;

class charMatrix{
private:
    int xRes;
    int yRes;
    char **xtable;
public:
    charMatrix(int xResolution,int yResolution, char bgChar);
    void setChar(int x,int y,char v);
    int getChar(int x,int y);
    ~charMatrix();
    void prt();
    void saveToFile(string fileName);
};

charMatrix::charMatrix(int xResolution,int yResolution, char bgChar){
    xRes = xResolution;
    yRes = yResolution;
    xtable = new char*[yRes];
    for(int i=0;i<yRes;i++) {
      xtable[i] = new char[xRes];
    }
    for(int i=0;i<yRes;i++){
        for(int j=0;j<xRes;j++){
            xtable[i][j] = bgChar;
        }
    }
}

charMatrix::~charMatrix(){
    for (int i=0; i<yRes; i++) {
        delete[] xtable[i];
    }
    delete [] xtable;
}

void charMatrix::setChar(int x,int y,char v){
    xtable[y][x] = v;
}

int charMatrix::getChar(int x,int y){
    return xtable[y][x];
}
void charMatrix::prt(){
    for(int i=0;i < yRes;i++){
       for(int j=0;j < xRes;j++){
           cout << getChar(j,i) << " ";
       }
       cout << endl;
    }
}

void charMatrix::saveToFile(string fileName){
    ofstream pgmFile(fileName);
    pgmFile << "P2" << endl;
    pgmFile << xRes << " " << yRes << endl; 
    pgmFile << 255 << endl;
    
    for(int i=0;i<yRes;i++){
        for(int j=0;j<xRes;j++){
            pgmFile << getChar(j,i) << " ";
        }// next column
        pgmFile << endl;
    }// next row

    // all done!
    pgmFile.close();
}

int main()
{
    int xR=25, yR=25, myChar='x';
    charMatrix c(xR,yR,' '); // fill a 25x25 block with blanks
    for(int i=0;i < yR;i++) {
        for(int j=0;j < xR;j++) {
            // do c.setChar(j,i,myChar) based on a calculation involving i,j
        }
    }
    c.prt();
    c.saveToFile("fun.txt"); 

    return 0;
}