Implementation of 3D Transformation [CS1255 - Graphics and Multimedia Lab]

AIM:
                   To write a "C++" program for the Implementation of 3D Transformation in CS1255 - Graphics and Multimedia Lab.

SOURCE CODE:

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>
int maxx,maxy,midx,midy;

void axis()
{
  getch();
  cleardevice();
  line(midx,0,midx,maxy);
  line(0,midy,maxx,midy);
}
void main()
{
  int gd,gm,x,y,z,ang,x1,x2,y1,y2;
  detectgraph(&gd,&gm);
  initgraph(&gd,&gm,"C:/TC/BGI");
  setfillstyle(3,25);
  maxx=getmaxx();
  maxy=getmaxy();
  midx=maxx/2;
  midy=maxy/2;
  outtextxy(100,100,"ORIGINAL OBJECT");
  line(midx,0,midx,maxy);
  line(0,midy,maxx,midy);
  bar3d(midx+100,midy-20,midx+60,midy-90,20,5);
  axis();
  outtextxy(100,20,"TRANSLATION");
  printf("\n\n Enter the Translation vector: ");
  scanf("%d%d",&x,&y);
  bar3d(midx+100,midy-20,midx+60,midy-90,20,5);
  bar3d(midx+(x+100),midy-(y+20),midx+(x+60),midy-(y+90),20,5);
  axis();
  outtextxy(100,20,"SCALING");
  printf("\n Enter the Scaling Factor: ");
  scanf("%d%d%d",&x,&y,&z);
  bar3d(midx+100,midy-20,midx+60,midy-90,20,5);
  bar3d(midx+(x*100),midy-(y*20),midx+(x*60),midy-(y*90),20*z,5);
  axis();
  outtextxy(100,20,"ROTATION");
  printf("\n Enter the Rotation angle: ");
  scanf("%d",&ang);
  x1=100*cos(ang*3.14/180)-20*sin(ang*3.14/180);
  y1=100*sin(ang*3.14/180)+20*sin(ang*3.14/180);
  x2=60*cos(ang*3.14/180)-90*sin(ang*3.14/180);
  y2=60*sin(ang*3.14/180)+90*sin(ang*3.14/180);
  axis();
  printf("\n After rotating about z-axis\n");
  bar3d(midx+100,midy-20,midx+60,midy-90,20,5);
  bar3d(midx+x1,midy-y1,midx+x2,midy-y2,20,5);
  axis();
  printf("\n After rotating about x-axis\n");
  bar3d(midx+100,midy-20,midx+60,midy-90,20,5);
  bar3d(midx+100,midy-x1,midx+60,midy-x2,20,5);
  axis();
  printf("\n After rotating about y-axis\n");
  bar3d(midx+100,midy-20,midx+60,midy-90,20,5);
  bar3d(midx+x1,midy-20,midx+x2,midy-90,20,5);
  axis();
  closegraph();
}

OUTPUT:






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