/*
 * sampling.h
 *
 * Copyright (C) 1989, 1991, Craig E. Kolb
 * All rights reserved.
 *
 * This software may be freely copied, modified, and redistributed
 * provided that this copyright notice is preserved on all copies.
 *
 * You may not distribute this software, in whole or in part, as part of
 * any commercial product without the express consent of the authors.
 *
 * There is no warranty or other guarantee of fitness of this software
 * for any purpose.  It is provided solely "as is".
 *
 * $Id: sampling.h,v 4.0 91/07/17 14:32:01 kolb Exp Locker: kolb $
 *
 * $Log:	sampling.h,v $
 * Revision 4.0  91/07/17  14:32:01  kolb
 * Initial version.
 * 
 */
#ifndef SAMPLING_H
#define SAMPLING_H

#if defined(__WATCOMC__) || defined(__BORLANDC__)
#include <stdlib.h>
#endif

/*
 * # of subsamples to take within each of the totsamples slots when
 * computing 'animated' bounding boxes.
 */
#define TIME_SUB_SAMPLES	10

typedef struct SampleInfo {
	int	totsamples,	/* # of samples/pixel */
		sidesamples,	/* sqrt(samples) */
		gaussian,	/* gaussian filter? */
		framenum,	/* current frame numer */
		timemagic;	/* # of time samples per screen... */
	Float	weight,		/* 1. / totsamples */
		spacing,	/* 1. / sidesamples  */
		filterwidth,	/* total width of filter */
		filterdelta,	/* filterwidth * spacing */
		**filter,	/* pixel filter, sidesamp by sidesamp */
		starttime,	/* start time */
		shutter;	/* length of time shutter is open */
} SampleInfo;

extern SampleInfo Sampling;

extern void	SamplingSetOptions(), UnitCirclePoint();

#endif /* SAMPLING */