/*****************************************************************************
   Polyline transformation subroutine for CS480 Programming Assignment 2
******************************************************************************
    Author: 
******************************************************************************/

#include <stdio.h>
#include <math.h>
#include <gl/gl.h>
#include <gl/device.h>
#include "draw.h"

transform_polyline(poly,u,res)
     Polyline *poly;      /* the input polyline structure */
     Polyline *res;    /* store the resulting deformed polylines here */
     float *u;         /* the slider parameter values */
{
  /* Write a polyline transformation program.  Use the values stored
     in the parameter vector "u" to build the transform, and then
     apply this transform to each of the points stored in the polyline
     structure.  Store the result in the "res" polyline structure.

     Rotate around the polyline's center point, which is stored in the
     polyline structure as "poly->center".

     When transforming the points, do the non-rigid transforms first,
     then the scaling, rotation, and translation.  */

  /* The values of the parameter vector u can be obtained by using the 
     defined constants in "draw.h", i.e.:
     
     u[TRANSLATE_X]  is the X translation value
     u[TRANSLATE_Y]  is the Y translation value
     u[SCALE_X]      is the X scale value
     etc.
  */

}