# include <iostream.h> # include <graphics.h> # include <conio.h> # include <math.h> void show_screen( ); void draw_pattern(const int,const int,const int,const int); const int generate_fibonacci_number(const int); const int check_fibonacci_number(const int); void Line(const int,const int,const int,const int); 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(const int x,const int y,const int r,const int 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; } else if((count_1/n)==1) { x_1=(int)(x+(n*dx)+0.5); y_1=(int)(y-((count_1%n)*dx)+0.5); } else if((count_1/n)==2) { x_1=(int)(x+((n-(count_1%n))*dx)+0.5); y_1=(int)(y-(n*dx)+0.5); } else if((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; } else if((count_2/n)==1) { x_2=(int)(x+(n*dx)+0.5); y_2=(int)(y-((count_2%n)*dx)+0.5); } else if((count_2/n)==2) { x_2=(int)(x+((n-(count_2%n))*dx)+0.5); y_2=(int)(y-(n*dx)+0.5); } else if((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(const int x_1,const int y_1,const int x_2,const int 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( ) ---------------------// const int check_fibonacci_number(const int n) { int fibonacci_member=0; int number=1; do { fibonacci_member=generate_fibonacci_number(number); if(fibonacci_member==n) return 1; else if(fibonacci_member>n) return 0; number++; } while(1); } //----------------- generate_fibonacci_number( ) ----------------------// const int generate_fibonacci_number(const int n) { if(n==0 || n==1) return n; else return (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); }