#ifndef POLYGON_H
#define POLYGON_H 1


/*******************************************************************************
 * PoissonPolygon.h
 ****/

// Definitions
//#define PI        3.141592653589793238462643383279

// Structs
typedef struct vertex
{
	double x[2];				// vertex coordinates
} vertex;

typedef struct edge
{
	double u[2];				// normal vector
	double p;						// distance from the origin
} edge;

typedef struct polygon
{
	int n;							// number of vertices = number of edges
        vertex *v;		// array of vertices
        edge *e;			// array of edges
	double box0[2];			// coordinates of the left lower vertex of smallest box containing the polygon
	double box1[2];			// coordinates of the right upper vertex of smallest box containing the polygon
} polygon;

// Functions
double scProd(const double *x, const double *y);
int compareAngles(const void * a, const void * b);
void rTriangle(double *phi);
int rPoissonPolygon(struct polygon *P, double lambda);
void freePolygon(struct polygon *P);
int isInside(struct polygon *P, double *x);
double getArea(struct polygon *P);


#endif /* POLYGON_H */