#include "structures.h"


struct snake_node* genere_snake_rectangle_bords(uint32 *nb_noeud, uint32 distance_bords, uint32 i_dim, uint32 j_dim) ;
struct snake_node* genere_snake_rectangle(int *nb_noeud, uint32 i1, uint32 j1, uint32 i2, uint32 j2, 
					  uint32 i_dim, uint32 j_dim) ;


void affiche_snake(int **image, struct snake_node *snake, int valseg, int valnoeud, uint32 *liste_pixel_segment) ;
void affiche_snake_ushort(unsigned short **image, struct snake_node *snake, int valseg, int valnoeud, uint32 *liste_pixel_segment) ;


struct snake_node* ajout_noeud_snake(struct snake_node *node, uint32 *nb_noeud) ;
int test_croisement_add_noeud_large(struct snake_node *N, uint32 Nxi, uint32 Nxj, int seg);
int test_croisement_add_noeud_strict(struct snake_node *N, uint32 Nxi, uint32 Nxj, int seg);

int test_croisement_move_seg_strict(struct snake_node *Nx, uint32 Nxi, uint32 Nxj, int seg);
int test_croisement_move_seg_large(struct snake_node *Nx, uint32 Nxi, uint32 Nxj, int seg);


void debug_aff_snake(struct snake_node *snake);