c++ project-1 ( 3D Transofrmation )

                     3D Transofrmation
#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,o,x1,x2,y1,y2;
detectgraph(&gd,&gm);
initgraph(&gd,&gm,"e:\tc\bgi");

setfillstyle(0,getmaxcolor());
maxx=getmaxx();
maxy=getmaxy();
midx=maxx/2;
midy=maxy/2;

axis();

bar3d(midx+50,midy-100,midx+60,midy-90,5,1);

printf("Enter translation factor
");
scanf("%d%d",&x,&y);
axis();
printf("After translation:
");
bar3d(midx+x+50,midy-(y+100),midx+x+60,midy-(y+90),5,1);

axis();
bar3d(midx+50,midy-100,midx+60,midy-90,5,1);
printf("Enter scaling factors
");
scanf("%d%d%d", &x,&y,&z);

axis();
printf("After scaling
");
bar3d(midx+(x*50),midy-(y*100),midx+(x*60),midy-(y*90),5*z,1);
axis();


bar3d(midx+50,midy-100,midx+60,midy-90,5,1);

printf("Enter rotating angle
" );
scanf("%d",&o);
 x1=50*cos(o*3.14/180)-100*sin(o*3.14/180);
 y1=50*sin(o*3.14/180)+100*cos(o*3.14/180);
 x2=60*cos(o*3.14/180)-90*sin(o*3.14/180);
 y2=60*sin(o*3.14/180)+90*cos(o*3.14/180);

axis();
printf("After rotation about z axis
" );
bar3d(midx+x1,midy-y1,midx+x2,midy-y2,5,1);
axis();

printf("After rotation  about x axis
");
bar3d(midx+50,midy-x1,midx+60,midy-x2,5,1);

axis();
printf("After rotation about yaxis
");
bar3d(midx+x1,midy-100,midx+x2,midy-90,5,1);
getch();
closegraph();
}