#include<stdio.h>
#include<conio.h>
#include<math.h>
#include<process.h>
#include<graphics.h>
int
x1,x2,y1,y2,mx,my,depth;
void
draw();
void
rotate();
void main()
{
int gd=DETECT,gm,c;
initgraph(&gd,&gm,"..s\\bgi");
printf("\n3D Transformation Rotating\n\n");
printf("\nEnter 1st top
value(x1,y1):");
scanf("%d%d",&x1,&y1);
printf("Enter right bottom
value(x2,y2):");
scanf("%d%d",&x2,&y2);
depth=(x2-x1)/4;
mx=(x1+x2)/2;
my=(y1+y2)/2;
draw();
getch();
cleardevice();
rotate();
getch();
}
void draw()
{
bar3d(x1,y1,x2,y2,depth,1);
}
void
rotate()
{
float t;
int a1,b1,a2,b2,dep;
printf("Enter the angle to
rotate=");
scanf("%f",&t);
t=t*(3.14/180);
a1=mx+(x1-mx)*cos(t)-(y1-my)*sin(t);
a2=mx+(x2-mx)*cos(t)-(y2-my)*sin(t);
b1=my+(x1-mx)*sin(t)-(y1-my)*cos(t);
b2=my+(x2-mx)*sin(t)-(y2-my)*cos(t);
if(a2>a1)
dep=(a2-a1)/4;
else
dep=(a1-a2)/4;
bar3d(a1,b1,a2,b2,dep,1);
setcolor(5);
//draw();
}
Output
