# include <iostream.h>
# include <graphics.h>
# include <conio.h>
# include <math.h>
void show_screen( );
void draw_pattern(constint,constint,constint,constint);
constint generate_fibonacci_number(constint);
constint check_fibonacci_number(constint);
void Line(constint,constint,constint,constint);
int main( )
{
int driver=VGA;
int mode=VGAHI;
int x=0;
int y=0;
int r=0;
int n=0;
do
{
show_screen( );
gotoxy(8,10);
cout<<"Lower Left Point of the Square :";
gotoxy(8,11);
cout<<"ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ";
gotoxy(12,13);
cout<<"Enter the value of x = ";
cin>>x;
gotoxy(12,14);
cout<<"Enter the value of y = ";
cin>>y;
gotoxy(8,18);
cout<<"Length of One side of the Square :";
gotoxy(8,19);
cout<<"ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ";
gotoxy(12,21);
cout<<"Enter the value of r = ";
cin>>r;
gotoxy(8,25);
cout<<"Number of Points on One side of the Square :";
gotoxy(8,26);
cout<<"ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ";
gotoxy(12,28);
cout<<"Enter the value of n = ";
cin>>n;
initgraph(&driver,&mode,"..\\Bgi");
setcolor(15);
draw_pattern(x,y,r,n);
setcolor(15);
outtextxy(110,460,"Press <Enter> to continue or any other key to exit.");
int key=int(getch( ));
if(key!=13)
break;
}
while(1);
return 0;
}
/*************************************************************************///------------------------- draw_pattern( ) ---------------------------///*************************************************************************/void draw_pattern(constint x,constint y,constint r,constint n)
{
Line(x,y,(x+r),y);
Line((x+r),y,(x+r),(y-r));
Line(x,(y-r),(x+r),(y-r));
Line(x,y,x,(y-r));
float dx=((float)r/(float)n);
int x_1=0;
int y_1=0;
int x_2=0;
int y_2=0;
for(int count_1=0;count_1<(4*n);count_1++)
{
if((count_1/n)==0)
{
x_1=(int)(x+((count_1%n)*dx)+0.5);
y_1=y;
}
elseif((count_1/n)==1)
{
x_1=(int)(x+(n*dx)+0.5);
y_1=(int)(y-((count_1%n)*dx)+0.5);
}
elseif((count_1/n)==2)
{
x_1=(int)(x+((n-(count_1%n))*dx)+0.5);
y_1=(int)(y-(n*dx)+0.5);
}
elseif((count_1/n)==3)
{
x_1=x;
y_1=(int)(y-((n-(count_1%n))*dx)+0.5);
}
for(int count_2=0;count_2<(4*n);count_2++)
{
if((count_2/n)==0)
{
x_2=(int)(x+((count_2%n)*dx)+0.5);
y_2=y;
}
elseif((count_2/n)==1)
{
x_2=(int)(x+(n*dx)+0.5);
y_2=(int)(y-((count_2%n)*dx)+0.5);
}
elseif((count_2/n)==2)
{
x_2=(int)(x+((n-(count_2%n))*dx)+0.5);
y_2=(int)(y-(n*dx)+0.5);
}
elseif((count_2/n)==3)
{
x_2=x;
y_2=(int)(y-((n-(count_2%n))*dx)+0.5);
}
if(x_1!=x_2 && y_1!=y_2 &&
check_fibonacci_number(abs((count_2-count_1))))
Line(x_1,y_1,x_2,y_2);
}
}
}
/*************************************************************************///------------------------------- Line( ) -----------------------------///*************************************************************************/void Line(constint x_1,constint y_1,constint x_2,constint y_2)
{
int color=getcolor( );
int x1=x_1;
int y1=y_1;
int x2=x_2;
int y2=y_2;
if(x_1>x_2)
{
x1=x_2;
y1=y_2;
x2=x_1;
y2=y_1;
}
int dx=abs(x2-x1);
int dy=abs(y2-y1);
int inc_dec=((y2>=y1)?1:-1);
if(dx>dy)
{
int two_dy=(2*dy);
int two_dy_dx=(2*(dy-dx));
int p=((2*dy)-dx);
int x=x1;
int y=y1;
putpixel(x,y,color);
while(x<x2)
{
x++;
if(p<0)
p+=two_dy;
else
{
y+=inc_dec;
p+=two_dy_dx;
}
putpixel(x,y,color);
}
}
else
{
int two_dx=(2*dx);
int two_dx_dy=(2*(dx-dy));
int p=((2*dx)-dy);
int x=x1;
int y=y1;
putpixel(x,y,color);
while(y!=y2)
{
y+=inc_dec;
if(p<0)
p+=two_dx;
else
{
x++;
p+=two_dx_dy;
}
putpixel(x,y,color);
}
}
}
/*************************************************************************///--------------------- check_fibonacci_number( ) ---------------------///*************************************************************************/constint check_fibonacci_number(constint n)
{
int fibonacci_member=0;
int number=1;
do
{
fibonacci_member=generate_fibonacci_number(number);
if(fibonacci_member==n)
return 1;
elseif(fibonacci_member>n)
return 0;
number++;
}
while(1);
}
/*************************************************************************///----------------- generate_fibonacci_number( ) ----------------------///*************************************************************************/constint generate_fibonacci_number(constint n)
{
if(n==0 || n==1)
return n;
elsereturn (generate_fibonacci_number((n-2))+
generate_fibonacci_number((n-1)));
}
/*************************************************************************///-------------------------- show_screen( ) ---------------------------///*************************************************************************/void show_screen( )
{
restorecrtmode( );
textmode(C4350);
cprintf("\n********************************************************************************");
cprintf("*****************************- -****************************");
cprintf("*----------------------------- ");
textbackground(1);
cprintf(" RN-Square Pattern ");
textbackground(8);
cprintf(" ----------------------------*");
cprintf("*****************************- -****************************");
cprintf("*-****************************************************************************-*");
for(int count=0;count<42;count++)
cprintf("*-* *-*");
gotoxy(1,46);
cprintf("*-****************************************************************************-*");
cprintf("*------------------------------------------------------------------------------*");
cprintf("********************************************************************************");
gotoxy(1,2);
}