void main()
{
int gd=DETECT,gm, x1, x2, x3, y1, y2, y3, p, mx, my, sx, sy, choice;
clrscr();
initgraph(&gd,&gm,"c:\\tc\\bgi");
mx = getmaxx()/2;
my = getmaxy()/2;
setcolor(3);
line( 0, my, getmaxx(), my );
line( mx, 0, mx, getmaxy() );
printf("Enter coordinates of 1st vertex of triangle: ");
scanf("%d %d",&x1,&y1);
printf("Enter coordinates of 2nd vertex of triangle: ");
scanf("%d %d",&x2,&y2);
printf("Enter coordinates of 3rd vertex of triangle: ");
scanf("%d %d",&x3,&y3);
printf("Enter the operation to be carried out?\n1. Reflection about x axis.\n2.Reflection about y axis.\n3.shearing\n");
printf("Choice: ");
scanf("%d",&choice);
while( choice < 4 && choice > 0 ){
switch( choice ){
case 1:
reflection_x( x1, x2, x3, y1, y2, y3, mx, my);
break;
case 2:
reflection_y( x1, x2, x3, y1, y2, y3, mx, my);
break;
case 3:
printf("Enter value of shearing in x and y: ");
scanf("%d%d",&sx,&sy);
shearing( x1, x2, x3, y1, y2, y3, mx, my, sx, sy);
break;
}
printf("Choice: ");
scanf("%d",&choice);
}
closegraph();
}
Transform Transform::shearing(
const Vector2d& factors
) {
return shearing(factors.x, factors.y);
}