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Graphic Design | Digital Differential Analyzer (DDA) Algorithm

/ Published in: C
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This is an implementation of the DDA (Digital Differential Analyzer) Algorithm in Computer Graphics Design in the C programming language.

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  1. //Shubham Mehta, Write a program to implement Digital Differential Analyzer Algorithm.
  2. #include<stdio.h>
  3. #include<conio.h>
  4. #include<graphics.h>
  5. void main()
  6. {
  7.  int gd, gm;
  8.  float x, y, x1, x2, y1, y2, slope;
  9.  clrscr();
  10.  printf("%s", "Please enter x1: ");
  11.  scanf("%f", &x1);
  12.  printf("%s", "Please enter y1: ");
  13.  scanf("%f", &y1);
  14.  printf("%s", "Please enter x2: ");
  15.  scanf("%f", &x2);
  16.  printf("%s", "Please enter y2: ");
  17.  scanf("%f", &y2);
  18.  slope=(y2-y1)/(x2-x1);
  19.  gd=DETECT, gm;
  20.  initgraph(&gd, &gm, "C:\\TC\\BGI");
  21.  if(slope<1)
  22.  {
  23.   for(; x1<=x2; x1++)
  24.   {
  25.    y1+=slope;
  26.    putpixel(x1, y1, RED);
  27.   }
  28.  }
  29.  else
  30.  {
  31.   for(; y1<=y2; y1++)
  32.   {
  33.    x1+=slope;
  34.    putpixel(x1, y1, RED);
  35.   }
  36.  }
  37.  getch();
  38.  closegraph();
  39. }

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