/*
 * Header Begins--Do not remove################################################
 *
 *	This driver takes data values in from standard input, so it is invoked:
 *
 *			interp1 < data.file  (e.g., spline.data)
 *
 *	spline.data contains a set of data values to plot
 *	This routine will give you a good idea of the relative speeds of
 *	the rendering techniques.

 *	(c) Eugene Fiume, University of Toronto, 1995.
 *
 *	You are permitted to use this code for noncommercial, educational
 *	purposes only.  This header must not be removed from this file.
 *
 * Header Ends--Do not remove##################################################
 */

#include <stdio.h>
#include "X.h"
#include "Spline.h"

main(argc, argv)
	int argc;
	char *argv[];
{
	int done = FALSE;
	RealPoint2D pt;


	printf("Interpolation Demonstration: Reading data from std input.\n");
	XOpen(700,400, argc, argv);

	printf("Hit a mouse button to start.\n");
	GetEvent();
	printf("Just sit back and watch a work of art unfold before your eyes.\n");
	SetEvaluation(DirectTM);
	SetUpSpline(CubicBSpline, 16, 0);	/* try CubicCatmullRom too */

	do {
		scanf("%lf %lf", &(pt.x), &(pt.y));
		if (pt.x < 0.0)
			done = TRUE;
		else
			AddControlPoint(pt);
	} while (!done);
	printf("Hit a mouse button to end.\n");
	GetEvent();
}