input.h

source code to compute the visibility polygon of a point in a polygon.

/* Brian O'Connor
 *
 * input.h: functions for reading and processing an input file
 * containing a list of obstacles
 */

#ifndef INPUT_H
#define INPUT_H

#define TRUE  	1
#define FALSE	0

#define INFINITY 1000000000.0
#define PRECISION (0.0001) /* precision for fp calculations */

/* a simple point type */

class Point {
public:
	double x;
	double y;
	double w; /* not always used */
};

/* type for storing obstacles */
class Obstacle {
public:
	int nPts;
	Point *pts;
};

class WorldInfo;

/* change this to allow for more obstacles */
#define MAX_OBS	10
#define MAX_INTERSECTIONS	100

/* read obstacles from input file */
void ReadInputFile( char *filename, WorldInfo *wInfo );

#endif