Polygon.h

/*======================================================*\
  Wednesday September the 25th 2013
  Arash HABIBI
  Polygon.h
\*======================================================*/

#ifndef _POLYGON_H_
#define _POLYGON_H_

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <GL/glut.h>
#include <GL/glx.h>

#include "Vector.h"

#define P_MAX_VERTICES 1000

typedef struct
{
	int _nb_vertices;
	Vector _vertices[P_MAX_VERTICES];
	int _is_closed;
	int _is_filled;
	int _is_convex;
} Polygon;

Polygon* P_new();

void P_copy(Polygon *original, Polygon *copy);

void P_addVertex(Polygon *P, Vector p);
void P_removeLastVertex(Polygon *P);

void P_print(Polygon *P, char *message); 
void P_draw(Polygon *P, int width, int height);

int P_isConvex(Polygon *P);
int P_isOnTheLeftOfAllEdges(Polygon *P, Vector M);
int P_nbEdgesIntersectedByRay(Polygon *P, Vector M, Vector u_ray);
int P_isInside(Polygon *P, Vector M);
void P_turnAroundY(Polygon *P, double radians);

Vector P_center(Polygon *P);
Vector P_normal(Polygon *P); 
void P_scale(Polygon *P, double factor); 
void P_translate(Polygon *P, Vector trans);
void P_rotate(Polygon *P, Vector normal); 



#endif // _POLYGON_H_