Friday, January 29, 2010
projection of 3d image
program:
#include "stdio.h"
#include "stdlib.h"
#include"graphics.h"
#include"conio.h"
void draw3d(int s,int x[20],int y[20],int d);
void main()
{
int gd=DETECT,gm;
int x[20],y[20],i,s,d;
initgraph(&gd,&gm,"");
printf("Enter the No of sides : ");
scanf("%d",&s);
for(i=0;i< s;i++)>
{
printf("(x%d,y%d) :",i,i);
scanf("%d%d",&x[i],&y[i]);
}
printf("Depth :");
scanf("%d",&d);
draw3d(s,x,y,d);
getch();
setcolor(14);
for(i=0;i< s-1;i++)
{
line(x[i]+200,y[i],x[i+1]+200,y[i+1]);
}
line(x[i]+200,y[i],x[0]+200,y[0]);
getch();//top view
for(i=0;i< s-1;i++)
{
line(x[i],300,x[i+1],300);
line(x[i],300+d*2,x[i+1],300+d*2);
line(x[i],300,x[i],300+d*2);
line(x[i+1],300,x[i+1],300+d*2);
}
getch();//side view
for(i=0;i< s-1;i++)
{
line(10,y[i],10,y[i+1]);
line(10+d*2,y[i],10+d*2,y[i+1]);
line(10,y[i],10+d*2,y[i]);
line(10,y[i+1],10+d*2,y[i+1]);
}
getch();
closegraph();
}
void draw3d(int s,int x[20],int y[20],int d)
{
int i,j,k=0;
for(j=0;j< 2;j++)
{
for(i=0;i< s-1;i++)>
line(x[i]+k,y[i]-k,x[i+1]+k,y[i+1]-k);
line(x[i]+k,y[i]-k,x[0]+k,y[0]-k);
k=d;
}
for(i=0;i< s;i++)
line(x[i],y[i],x[i]+d,y[i]-d);
}
Output:
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