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Displaying Source Code(s)
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Program for 3-D Transformation.
--------------------------------------------------------------------------------
#include<iostream.h>
#include<dos.h>
#include<stdio.h>
#include<math.h>
#include<conio.h>
#include<graphics.h>
#include<process.h>
int gd=DETECT,gm;
double x1,x2,y1,y2;
void show_message()
{
char *mess[]={"-","=","["," ","3","D","-","T","r","a","n","s",
"f","o","r","m","a","t","i","o","n"," ","]","=","-"};
int xx=28,xxx=52,i,j;
_setcursortype(_NOCURSOR);
for(i=0,j=24;i<15,j>=12;i++,j--)
{
gotoxy(xx,1);
cout<<mess[i];
xx++;
gotoxy(xxx,1);
cout<<mess[j];
xxx--;
delay(50);
}
_setcursortype(_NORMALCURSOR);
}
void draw_cube(double edge[20][3])
{
initgraph(&gd,&gm,"..\bgi");
int i;
clearviewport();
for(i=0;i<19;i++)
{
x1=edge[i][0]+edge[i][2]*(cos(2.3562));
y1=edge[i][1]-edge[i][2]*(sin(2.3562));
x2=edge[i+1][0]+edge[i+1][2]*(cos(2.3562));
y2=edge[i+1][1]-edge[i+1][2]*(sin(2.3562));
line(x1+320,240-y1,x2+320,240-y2);
}
line(320,240,320,25);
line(320,240,550,240);
line(320,240,150,410);
getch();
closegraph();
}
void scale(double edge[20][3])
{
double a,b,c;
int i;
cout<<"
" Enter The Scaling Factors ":=";
cin>>a>>b>>c;
initgraph(&gd,&gm,"..\bgi");
clearviewport();
for(i=0;i<20;i++)
{
edge[i][0]=edge[i][0]*a;
edge[i][1]=edge[i][1]*b;
edge[i][2]=edge[i][2]*c;
}
draw_cube(edge);
closegraph();
}
void translate(double edge[20][3])
{
int a,b,c;
int i;
cout<<"
" Enter The Translation Factors ":=";
cin>>a>>b>>c;
initgraph(&gd,&gm,"..\bgi");
clearviewport();
for(i=0;i<20;i++)
{
edge[i][0]+=a;
edge[i][0]+=b;
edge[i][0]+=c;
}
draw_cube(edge);
closegraph();
}
void rotate(double edge[20][3])
{
int ch;
int i;
double temp,theta,temp1;
clrscr();
cout<<"
-=[ Rotation About ]=-";
cout<<"
1:==>" X-Axis "";
cout<<"
2:==>" Y-Axis "";
cout<<"
3:==>" Z-Axis "";
cout<<"
" Enter Your Choice ":=";
cin>>ch;
switch(ch)
{
case 1:
cout<<"
" Enter The Angle ":=";
cin>>theta;
theta=(theta*3.14)/180;
for(i=0;i<20;i++)
{
edge[i][0]=edge[i][0];
temp=edge[i][1];
temp1=edge[i][2];
edge[i][1]=temp*cos(theta)-temp1*sin(theta);
edge[i][2]=temp*sin(theta)+temp1*cos(theta);
}
draw_cube(edge);
break;
case 2:
cout<<"
" Enter The Angle ":=";
cin>>theta;
theta=(theta*3.14)/180;
for(i=0;i<20;i++)
{
edge[i][1]=edge[i][1];
temp=edge[i][0];
temp1=edge[i][2];
edge[i][0]=temp*cos(theta)+temp1*sin(theta);
edge[i][2]=-temp*sin(theta)+temp1*cos(theta);
}
draw_cube(edge);
break;
case 3:
cout<<"
" Enter The Angle ":=";
cin>>theta;
theta=(theta*3.14)/180;
for(i=0;i<20;i++)
{
edge[i][2]=edge[i][2];
temp=edge[i][0];
temp1=edge[i][1];
edge[i][0]=temp*cos(theta)-temp1*sin(theta);
edge[i][1]=temp*sin(theta)+temp1*cos(theta);
}
draw_cube(edge);
break;
}
}
void reflect(double edge[20][3])
{
int ch;
int i;
clrscr();
cout<<"
-=[ Reflection About ]=-";
cout<<"
1:==>" X-Axis "";
cout<<"
2:==>" Y-Axis "";
cout<<"
3:==>" Z-Axis "";
cout<<"
" Enter Your Choice ":=";
cin>>ch;
switch(ch)
{
case 1:
for(i=0;i<20;i++)
{
edge[i][0]=edge[i][0];
edge[i][1]=-edge[i][1];
edge[i][2]=-edge[i][2];
}
draw_cube(edge);
break;
case 2:
for(i=0;i<20;i++)
{
edge[i][1]=edge[i][1];
edge[i][0]=-edge[i][0];
edge[i][2]=-edge[i][2];
}
draw_cube(edge);
break;
case 3:
for(i=0;i<20;i++)
{
edge[i][2]=edge[i][2];
edge[i][0]=-edge[i][0];
edge[i][1]=-edge[i][1];
}
draw_cube(edge);
break;
}
}
void perspect(double edge[20][3])
{
int ch;
int i;
double p,q,r;
clrscr();
cout<<"
-=[ Perspective Projection About ]=-";
cout<<"
1:==>" X-Axis "";
cout<<"
2:==>" Y-Axis "";
cout<<"
3:==>" Z-Axis "";
cout<<"
" Enter Your Choice ":=";
cin>>ch;
switch(ch)
{
case 1:
cout<<"
" Enter P ":=";
cin>>p;
for(i=0;i<20;i++)
{
edge[i][0]=edge[i][0]/(p*edge[i][0]+1);
edge[i][1]=edge[i][1]/(p*edge[i][0]+1);
edge[i][2]=edge[i][2]/(p*edge[i][0]+1);
}
draw_cube(edge);
break;
case 2:
cout<<"
" Enter Q ":=";
cin>>q;
for(i=0;i<20;i++)
{
edge[i][1]=edge[i][1]/(edge[i][1]*q+1);
edge[i][0]=edge[i][0]/(edge[i][1]*q+1);
edge[i][2]=edge[i][2]/(edge[i][1]*q+1);
}
draw_cube(edge);
break;
case 3:
cout<<"
" Enter R ":=";
cin>>r;
for(i=0;i<20;i++)
{
edge[i][2]=edge[i][2]/(edge[i][2]*r+1);
edge[i][0]=edge[i][0]/(edge[i][2]*r+1);
edge[i][1]=edge[i][1]/(edge[i][2]*r+1);
}
draw_cube(edge);
break;
}
closegraph();
}
void main()
{
int choice;
double edge[20][3]=
{
100,0,0,
100,100,0,
0,100,0,
0,100,100,
0,0,100,
0,0,0,
100,0,0,
100,0,100,
100,75,100,
75,100,100,
100,100,75,
100,100,0,
100,100,75,
100,75,100,
75,100,100,
0,100,100,
0,100,0,
0,0,0,
0,0,100,
100,0,100
};
while(1)
{
clrscr();
show_message();
cout<<"
1:==>" Draw Cube "";
cout<<"
2:==>" Scaling "";
cout<<"
3:==>" Rotation "";
cout<<"
4:==>" Reflection "";
cout<<"
5:==>" Translation "";
cout<<"
6:==>" Perspective Projection "";
cout<<"
7:==>" Exit "";
cout<<"
" Enter Your Choice ":=";
cin>>choice;
switch(choice)
{
case 1:
draw_cube(edge);
break;
case 2:
scale(edge);
break;
case 3:
rotate(edge);
break;
case 4:
reflect(edge);
break;
case 5:
translate(edge);
break;
case 6:
perspect(edge);
break;
case 7:
exit(0);
default:
cout<<"
a" Press A Valid Key...!!! "";
getch();
break;
}
closegraph();
}
}
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123
Eng