IMPLEMENTATION OF DDA LINE DRAWING ALGORITHM USING C++

 IMPLEMENTATION OF DDA LINE DRAWING ALGORITHM USING C++  :

CODE:

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

main()

{

//INITIALIZING THE STARTING AND ENDING POINT

int x1=100,y1=100,x2=500,y2=400,dx,dy,length,i;

float x,y,xinc,yinc;

int gd=DETECT,gm;

initgraph(&gd,&gm,"c:\\tc\\bgi");


//CALCULATING DY AND DX

dx=x2-x1;

dy=y2-y1;


//CONDITIONS FOR CALCULATING LENGTH

if(abs(dx)>abs(dy))

    length=abs(dx);

else

    length=abs(dy);


//CALCULATION X AND Y VALUES FOR ITERATIONS

xinc=dx/(float)length;

yinc=dy/(float)length;

x=x1;

y=y1;

floodfill(3,5,WHITE);

putpixel(x,y,0);

for(i=0;i<length;i++)

{

    putpixel(x,y,0);

    x=x+xinc;

    y=y+yinc;

    delay(10);

}

getch();

closegraph();

}

OUTPUT:







Comments

Post a Comment

Popular posts from this blog

C++ PROGRAM TO IMPLEMENT THE CONCEPT OF REFLEXION

Image
C++ PROGRAM TO IMPLEMENT THE CONCEPT OF REFLEXION CODE: #include<stdio.h> #include<conio.h> #include<graphics.h> #include<math.h> void show(float a[][3]){ float xm,ym; int i=0; xm=getmaxx()/2; ym=getmaxy()/2; while(i<2){ line(xm+a[i][0],ym-a[i][1],xm+a[i+1][0],ym-a[i+1][1]); i++; } i=2; line(xm+a[i][0],ym-a[i][1],xm+a[0][0],ym-a[0][1]); setcolor(RED); line(0,ym,xm*2,ym); line(xm,0,xm,ym*2); setcolor(BLUE); } void matmul(float b[][3],float a[][3],float c[][3]){ int i,j,m; for(i=0;i<3;i++){ for(j=0;j<3;j++){ c[i][j]=0; } } for(i=0;i<3;i++){ for(j=0;j<3;j++){ for(m=0;m<3;m++){ c[i][j]=c[i][j]+(a[i][m]*b[m][j]); } } } } void ref(float a[][3]){ float b[10][3],c[10][3]; int i=0,j; show(a); for(i=0;i<3;i++){ for(j=0;j<3;j++){ b[i][j]=0; if(i==j) b[i][j]=1; } } b[1][1]=-1; matmul(b,a,c); setcolor(YELLOW); show(c); } int main(){ int gdriver=DETECT,gmode; float a[10][3]; initgrap...
Read more

C++ PROGRAM TO IMPLEMENT THE CONCEPT OF FIXED SCALING

Image
C++ PROGRAM TO IMPLEMENT THE CONCEPT OF FIXED SCALING CODE: #include<stdio.h> #include<graphics.h> #include<conio.h> int main() {     int gd=DETECT,gm;     int x=100,y=100,x1=200,y1=200,x2=300,y2=100,sx=2,sy=1,tx=100,ty=200;     initgraph(&gd,&gm,"");     setcolor(YELLOW);     line(x,y,x1,y1);     line(x1,y1,x2,y2);     line(x2,y2,x,y);     outtextxy(140,210,"BEFORE SCALING");     setcolor(CYAN);     line(x*sx+tx*(1-sx),y*sy+ty*(1-sy),x1*sx+tx*(1-sx),y1*sy+ty*(1-sy));     line(x1*sx+tx*(1-sx),y1*sy+ty*(1-sy),x2*sx+tx*(1-sx),y2*sy+ty*(1-sy));     line(x2*sx+tx*(1-sx),y2*sy+ty*(1-sy),x*sx+tx*(1-sx),y*sy+ty*(1-sy));     outtextxy(340,210,"AFTER SCALING");     getch();     closegraph();     return 0; } OUTPUT:
Read more

C++ PROGRAM TO IMPLEMEMT THE CONCEPT OF FLOODFILL ALGORITHM

Image
 C++ PROGRAM TO IMPLEMEMT THE CONCEPT OF FLOODFILL ALGORITHM CODE: // program to fill a polygon using floodfill algorithm #include <graphics.h> #include <stdio.h> void flood(int x, int y, int new_col, int old_col) {     if (getpixel(x, y) == old_col) {         putpixel(x, y, new_col);         flood(x + 1, y, new_col, old_col);         flood(x - 1, y, new_col, old_col);         flood(x, y + 1, new_col, old_col);         flood(x, y - 1, new_col, old_col);     } } int main() {     int gd, gm = DETECT;     initgraph(&gd, &gm, "");     int top, left, bottom, right;     top = left = 50;     bottom = right = 300;     int points[]={50,50,50,100,100,150,150,100,200,200,250,100,250,50,50,50}; drawpoly(8, points);     int x = 51;     int y = 51;     int newcolor = ...
Read more