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Line Clipping

#include<stdio.h> #include<conio.h> #include<graphics.h> #include<math.h> void clip(float,float,float); int i,j=0,n; int rx1,rx2,ry1,ry2; float x1[8],y1[8]; void main() { int gd=DETECT,gm; int i,n; float x[8],y[8],m; clrscr(); initgraph(&gd,&gm,""); printf("coordinates for rectangle : "); scanf("%d%d%d%d",&rx1,&ry1,&rx2,&ry2); printf("no. of sides for polygon : "); scanf("%d",&n); printf("coordinates : "); for(i=0;i<n;i++) { scanf("%f%f",&x[i],&y[i]); } cleardevice(); outtextxy(10,10,"Before clipping"); outtextxy(10,470,"Press any key...."); rectangle(rx1,ry1,rx2,ry2); for(i=0;i<n-1;i++) line(x[i],y[i],x[i+1],y[i+1]); line(x[i],y[i],x[0],y[0]); getch(); cleardevice(); for(i=0;i<n-1;i++) { m=(y[i+1]-y[i])/(x[i+1]-x[i]); clip(x[i],y[i],m); } clip(x[0],y[0],m); outtextxy(10,10,"After clipping"); outtextxy(10,470,"Pre...