Program to implement DDA Circle Drawing Algorithm. - Computer Graphics Source Code in C++

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Home » C++ Home » Computer Graphics Home » Program to implement DDA Circle Drawing Algorithm.

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Title	Program to implement DDA Circle Drawing Algorithm.
Description
Category	C++ » Computer Graphics
Hits	400692
Code	Select and Copy the Code
#include<iostream.h> #include<graphics.h> #include<conio.h> #include<math.h> #include<dos.h> #include<stdlib.h> #include<stdio.h> class myCircle { private: float x,y,r,d,x1,y1; public: myCircle(); //Constructor void showCircle(); int sign(int); }; int myCircle::sign(int xx) { if(xx<0) return -1; if(xx==0) return 0; if(xx>0) return 1; return 0; } myCircle::myCircle() { x=0;y=0; cout<<" "Enter The Co-Ordinates Of The Circle ":="; cin>>x1>>y1; cout<<" "Enter The Radius Of The Circle ":="; cin>>r; } void myCircle::showCircle() { char s; int s1,s2,ic; x=x1;y=y1; float i=0; while(i<=360) { x=x1+rcos(i); y=y1+rsin(i); putpixel((x+320),480-(y+240),6); i+=0.5; } setcolor(15); sprintf(s,"Center(%d,%d)",x1,y1); outtextxy(40,10,"The Center Is At :="); outtextxy(40,20,s); sprintf(s,"Radius=%g",r); outtextxy(40,30,s); getch(); } void main() { int gd=DETECT,gm,i,j,xx=220,xxx=430; clrscr(); myCircle a; char mess[]={"D","D","A"," ","C","I","R","C","L","E"," ","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=19;i<12,j>=10;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.showCircle(); closegraph(); }

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