// This is the header file (class declaration) for my pointset class
//
// COMP 254 final project, study of landmark points
//
//		Matt Cutts, April 18, 1996

#ifndef __POINTSET_H__
#define __POINTSET_H__ 1		// only include declaration once

#include "main.h"

#include <math.h>
#include <stdlib.h>
#include <iostream.h>                   // include necessary system files

class pointset
{
  int numpoints;
  double *x, *y;			// pointer to array of landmark points
  double xcen, ycen;			// centroid position
  double scale_factor;			// amount that points are scaled

public:
  pointset();				// constructor for pointset
  pointset(int size);			// constructor for pointset

  ~pointset();				// destructor

  pointset(pointset&);			// copy constructor

  void prn_points();			// print the points

  void read_points();			// read in the points

  void compute_centroid();		// determine the centroid
  double get_xcen() { return xcen; }	// return the x component of centroid
  double get_ycen() { return ycen; }	// return the y component of centroid

  double get_x(int i) { return x[i]; }	// get i-th x value
  double get_y(int i) { return y[i]; }	// get i-th y value
  
  void set_x(int i, double d) { x[i] = d; }	// set i-th x value
  void set_y(int i, double d) { y[i] = d; }	// set i-th y value

  double compute_scale_factor();	// determine the amount to normalize

  void translate(double x, double y);	// translate the pointset

  void rotate(double angle);		// rotate the pointset

  void scale(double scale);		// scale the pointset

  void add(pointset obj);		// add two pointsets

  double dist(pointset obj);		// compute distance between 2 pointsets

  pointset procrustes(pointset obj);	// apply the procrustes metric

  void imfilter(double x, double y);	// apply a filter for im reading code
  
  void interleave(pointset obj);	// print interleaved points
}; 

#endif