Computer graphics program to implement DDA Line Algorithm

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Computer graphics program in Python and C++

Python

from graphics import *
import time
 
def dda(x1, y1, x2, y2):
   """ DDA Line Drawing Algorithm"""
 
   # creating the window
   winX = 600
   winY = 600
   win = GraphWin('DDA Line', winX, winY)
 
   # measure the distance
   dx = abs(x2 - x1)
   dy = abs(y2 - y1)
 
   # check the start & end point
   if (x1 > x2):
       x, y = x2, y2
       xend = x1
   else:
       x, y = x1, y1
       xend = x2
 
   # calculate the steps
   steps = dx if (dx > dy) else dy
 
   # calculate the increment for x & y
   x_inc = dx / steps
   y_inc = dy / steps
 
   # loop for making the line based on point
   PutPixle(win, x, y)
   while True:
       x = x + x_inc
       y = y - y_inc
       print(x,y)
       time.sleep(0.01)
       PutPixle(win, round(x), round(y))
       if(x > xend): break
 
   win.getMouse()
   win.close()
 
def PutPixle(win, x, y):
   """ Plot A Pixle In The Windows At Point (x, y) """
   pt = Point(x, y)
   pt.draw(win)
 
 
def main():
   x1 = int(input("Enter Start X: "))
   y1 = int(input("Enter Start Y: "))
   x2 = int(input("Enter End X: "))
   y2 = int(input("Enter End Y: "))
 
   dda(x1, y1, x2, y2)
 
 
if __name__ == "__main__":
   main()
computer graphics

C++

#include<graphics.h>
#include<iostream>
#include<conio.h>
#include<math.h>
 
using namespace std;
 
void dda(int x0, int y0, int xend, int yend){
    int dx = xend - x0;
    int dy = yend - y0;
    float xinc, yinc, x = x0, y = y0;
 
    int steps = (fabs(dx) > fabs(dy))? fabs(dx): fabs(dy);
 
    xinc = (float) dx / (float) steps;
    yinc = (float) dy / (float) steps;
 
    putpixel(round(x), round(y), WHITE);
 
    for(int i=0;i<steps;i++){
        x += xinc;
        y += yinc;
        cout << round (x) <<" " << round(y) << "\n";
        putpixel(round(x), round(y), WHITE);
    }
}
 
 
 
 
int main(){
    int gd = DETECT, gm;
    initgraph(&gd, &gm, "");
    int x0, y0, xend, yend;
    cout << "Enter x0, y0 :";
    cin >> x0 >> y0 ;
    cout << "Enter xend, yend :";
    cin >> xend >> yend;
    dda(x0, y0, xend, yend);
    getch();
    closegraph();
 
    return 0;
}
computer graphics

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