/* $Header: /s/parsons/d/fac/goss/cs510/s94/Labs/RCS/xparms.h,v 1.2 1994/01/26 21:06:58 goss Exp $ */

/*	xparms.h - definitions for interface between user program and
			xparms.c Motif user interface
*/

/* $Log: xparms.h,v $
 * Revision 1.2  1994/01/26  21:06:58  goss
 * CS510 Spring94 Initial released version
 *
 */

#ifndef XPARMS_H
#define XPARMS_H 1

#include <Xm/Xm.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define REDRAW_TEST   0
#define REDRAW_IMAGE  1

/* Prototypes for functions user defines for each homework assignment. */

void process_parameters(char *string);
void process_data(char *string);
void setup_drawing_area( int argc, char *argv[] );
void redraw(int width, int height);

/* Prototypes for functions provided for use by user program */

void get_width_height(int *width, int *height);
void change_colormap_to_grayscale(int num_levels);
void set_intensity(float I);
void clear_window(void);
void draw_line(int x1, int y1, int x2, int y2);
void draw_disk(int x, int y, int radius);
void set_pixel(int u, int v, float I);
void set_pixel_addr(int u, int v, int cmap_addr);

/* Global variables for use by user program */

extern Widget g_drawing_canvas;
			/* widget into which all graphics are drawn */
extern GC     g_gc;     /* graphics context for all graphics operations */

#endif /* XPARMS_H */