#include<conio.h>
#include<iostream.h>
#include<graphics.h>
#include<math.h>
void main()
{
float x,y,dx,dy;
int x1,y1,x2,y2,i,length;
int gdriver=DETECT,gmode;
initgraph(&gdriver,&gmode,”C:\TC\BGI”);
cout<<”Enter co-ordinates of point 1:”;
cin>>x1>>y1;
cout<<” Enter co-ordinates of point 2:”;
cin>>x2>>y2;
dx=abs(x2-x1);
dy=abs(y2-y1);
if(dx>=dy)
length=dx;
else
length=dy;
dx=dx/length;
dy=dy/length;
x=x1;
y=y1;
i=1;
while(i<length)
{
putpixel(x,y,WHITE);
x=x+dx;
y=y+dy;
i++;
getch();
closegraph();
#include<conio.h>
#include<iostream.h>
#include<graphics.h>
#include<math.h>
void main()
{
float x,y,dx,dy;
int x1,y1,x2,y2,i,e,x,y,dx,dy;
int gdriver=DETECT,gmode;
initgraph(&gdriver,&gmode,”C:\TC\BGI”);
cout<<”Enter the co-ordinates of point 1:”;
cin>>x1>>y1;
cout<<” Enter the co-ordinates of point 2:”;
cin>>x2>>y2;
dx=abs(x2-x1);
dy=abs(y2-y1);
if(dx>=dy)
length=dx;
else
length=dy;
dx=dx/length;
dy=dy/length;
x=x1;
y=y1;
e=2*dy-dx;
i=1;
do
{
putpixel(x,y,WHITE);
while(e>=0)
{
y++;
e=e-2*dx;
putpixel(x,y,WHITE);
}
x++;
e=e+2*dy;
i++;
}
while(i<=dx);
getch();
closegraph();
}
#include<iostream.h>
#include<conio.h>
#include<graphics.h>
int r,x,y;
float a,b,d;
void bresan();
void pixel(float a,float b);
void main()
{
int gm,gr;
clrscr();
detectgraph(&gm,&gr);
initgraph(&gm,&gr,"d:\\tc\\BGI");
cout<<"Enter the center point:”;
cin>>x>>y;
cout<<"Enter the radius :”;
cin>>r;
bresan();
getch();
}
void bresan()
{
a=0;
b=r;
d=3-(2*r);
while(a<=b)
{
a++;
if(d>=0)
{
b--;
d=d+10+4*(a-b);
}
else
d=d+(4*a)+6;
pixel(a,b);
}
}
void pixel(float a,float b)
{
putpixel(x+a,y+b,10);
putpixel(x-a,y-b,10);
putpixel(x+a,y-b,10);
putpixel(x-a,y+b,10);
putpixel(x+b,y+a,10);
putpixel(x-b,y-a,10);
putpixel(x+b,y-a,10);
putpixel(x-b,y+a,10);
}
#include<iostream.h>
#include<conio. h>
#include<graphics.h>
#include<math.h>
void disp();
float x,y;
int xc,yc;
void main()
{
int gd=DETECT,gm;
int a,b;
float p1,p2;
clrscr();
initgraph(&gd,&gm,"");
cout<<”Enter the co-corinates”;
cin>>xc>>yc>>a>>b;
x=0;y=b;
disp();
p1=(b*b)-(a*a*b)+(a*a)/4;
while((2.0*b*b*x)<=(2.0*a*a*y))
{
x++;
if(p1<=0)
p1=p1+(2.0*b*b*x)+(b*b);
else
{
y--;
p1=p1+(2.0*b*b*x)+(b*b)-(2.0*a*a*y);
}
disp();
x=-x;
disp();
x=-x;
}
x=a;
y=0;
disp();
p2=(a*a)+2.0*(b*b*a)+(b*b)/4;
while((2.0*b*b*x)>(2.0*a*a*y))
{
y++;
if(p2>0)
p2=p2+(a*a)-(2.0*a*a*y);
else
{
x--;
p2=p2+(2.0*b*b*x)-(2.0*a*a*y)+(a*a);
}
disp();
y=-y;
disp();
y=-y;
}
getch();
closegraph();
}
void disp()
{
putpixel(xc+x,yc+y,10);
putpixel(xc-x,yc+y,10);
putpixel(xc+x,yc-y,10);
putpixel(xc+x,yc-y,10);
}
#include<iostream.h>
#include<graphics.h>
#include<conio.h>
#include<math.h>
#include<dos.h>
#include<stdlib.h>
#include<stdio.h>
class lines
{
private:
int length,x1,y1,x2,y2,x,y,dx,dy,wx,wy,w,width;
public:
lines(); //Constructor
void showline();
int sign(int);
};
int lines::sign(int xx)
{
if(xx<0)
return -1;
if(xx==0)
return 0;
if(xx>0)
return 1;
return 0;
}
lines::lines()
{
x=0;y=0;
cout<<"Enter The Co-Ordinates (x1,y1) ":=";
cin>>x1>>y1;
cout<<"Enter The Co-Ordinates (x2,y2) ":=";
cin>>x2>>y2;
cout<<"Enter The Width Of The Line ":=";
cin>>width;
}
void lines::showline()
{
char *s,*s1;
if(abs(x2-x1)>=abs(y2-y1))
length=abs(x2-x1);
else
length=abs(y2-y1);
w=width;
wx=((w-1)/2)*(sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1))/abs(y2-y1));
wy=((w-1)/2)*(sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1))/abs(x2-x1));
dx=(x2-x1)/length;
dy=(y2-y1)/length;
if(dy>dx)
wy=wx;
x=x1+0.5*sign(dx);
y=y1+0.5*sign(dy);
int i=1;
setcolor(0);
while(i<=length)
{
for(int j=0;j<wy;j++)
putpixel((x+320),480-(y+240+j),6);
for(j=0;j<wy;j++)
putpixel((x+320),480-(y+240-j),6);
putpixel((x+320),480-(y+240),6);
x+=dx;
y+=dy;
i++;
}
setcolor(15);
outtextxy(40,10,"The Points Are:=");
sprintf(s,"A(%d,%d)",x1,y1);
outtextxy(40,20,s);
sprintf(s,"B(%d,%d)",x2,y2);
outtextxy(40,30,s);
getch();
}
void main()
{
int gd=DETECT,gm,i,j,xx=240,xxx=380;
clrscr();
lines a;
char *mess[]={"D","D","A"," ","A","L","G","O","R","I","T","H","M"};
initgraph(&gd,&gm,"..\bgi");
cleardevice();
rectangle(120,40,320,240);
rectangle(320,40,520,240);
rectangle(120,240,320,440);
rectangle(320,240,520,440);
for(i=0,j=12;i<8,j>=6;i++,j--)
{
xx+=10;
outtextxy(xx,10,mess[i]);
xxx-=10;
outtextxy(xxx,10,mess[j]);
delay(100);
}
for(i=130;i<=510;i+=10)
for(j=50;j<=430;j+=10)
putpixel(i,j,15);
for(i=130;i<=510;i+=10)
{
if(i==320)
continue;
outtextxy(i,237,"+");
}
for(i=50;i<=430;i+=10)
{
if(i==240)
continue;
outtextxy(317,i,"-");
}
outtextxy(310,230,"O");
outtextxy(530,240,"X");
outtextxy(320,450,"-Y");
outtextxy(100,240,"-X");
outtextxy(320,30,"Y");
a.showline();
closegraph();
}
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