dda_algorithm.cpp

// Copyright to Bhargav Nath @ 2023 All Rights Reserved //
// Digital Differential Analyzer Algorithm //
#include<iostream>
#include<cmath>
using namespace std;

void ddaAlgorithm(int x0, int y0, int x1, int y1)
{
    cout<<"Pixels to be drawn are..."<<endl;
    float x, y, dx, dy, xinc, yinc, steps;
    x = x0;
    y = y0;
    dx = x1-x0;
    dy = y1-y0;
    if(dx>dy)
    {
        steps = abs(dx);
    }
    else
    {
        steps = abs(dy);
    }
    xinc = dx/steps;
    yinc = dy/steps;
    cout<<"("<<round(x)<<", "<<round(y)<<")"<<endl;
    for(int i=1; i<=steps; i++)
    {
        x = x+xinc;
        y = y+yinc;
        cout<<"("<<round(x)<<", "<<round(y)<<")"<<endl;
    }
}

int main()
{
    int x0, y0, x1, y1;
    cout<<"*** DIGITAL DIFFERENTIAL ANALYZER ALGORITHM ***"<<endl;
    cout<<"Enter x-coordinate for initial point: ";
    cin>>x0;
    cout<<"Enter y-coordinate for initial point: ";
    cin>>y0;
    cout<<"Enter x-coordinate for final point: ";
    cin>>x1;
    cout<<"Enter y-coordinate for final point: ";
    cin>>y1;
    ddaAlgorithm(x0,y0,x1,y1);
    return 0;
}