Reflect an object as per user’s choice. Choices are With respect to x – axis, With respect to y – axis, With respect to co-ordinate origin and With respect to an axis at 45 degree to x – axis.


#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<process.h>

void Triangle(int, int, int, int, int, int);
int midx=319, midy=239;

void  main()
{
int gdriver=DETECT, gmode, c,r,x1,y1,x2,y2,x3,y3;
initgraph(&gdriver,&gmode,"c:\\tc\\bgi");

  do
  {
clrscr();
cleardevice();

printf("1.X-Axis \n2.Y-Axis \n3.Co-ordinate Origin \n4.An Axis 45-Degree to X-Axis \n\n");
printf("Enter the choice : ");
scanf("%d",&c);
if(c==5)
   exit(0);
clrscr();
cleardevice();

printf("Enter the value of (x1,y1) : ");
scanf("%d %d",&x1,&y1);
printf("Enter the value of (x2,y2) : ");
scanf("%d %d",&x2,&y2);
printf("Enter the value of (x3,y3) : ");
scanf("%d %d",&x3,&y3);

cleardevice();
line(0,midy,2*midx,midy);
line(midx,0,midx,2*midy);
Triangle(x1,y1,x2,y2,x3,y3);

switch(c)
{
       case 1:
             getch();    setcolor(4);
             Triangle(x1,-y1,x2,-y2,x3,-y3);
             break;

       case 2:
             getch();    setcolor(4);
             Triangle(-x1,y1,-x2,y2,-x3,y3);
             break;

       case 3:
             getch();    setcolor(4);
             Triangle(-x1,-y1,-x2,-y2,-x3,-y3);
             break;

       case 4:
             getch();    setcolor(4);
             Triangle(y1,x1,y2,x2,y3,x3);
             break;
      //    case 5:  exit(0);
}
printf("Do you want to continue...");
  }while(getch() != 'n');
closegraph();
}

void Triangle(int x1, int y1, int x2, int y2, int x3, int y3)
{
line(midx+x1,midy-y1,midx+x2,midy-y2);
line(midx+x2,midy-y2,midx+x3,midy-y3);
line(midx+x3,midy-y3,midx+x1,midy-y1);
}

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