#ifndef CubeLAPL_H
#define CubeLAPL_H

/* Last edited on 2007-02-04 18:42:19 by stolfi */

/* Procedures to build cubical polyhedra. */

#define CubeLAPL_H_copyright \
  "Copyright © 2000 Universidade Estadual de Campinas (UNICAMP)"

#include <Octf.h>
#include <Triangulation.h>

#include <r4.h>
#include <vec.h>

SixPlaces_t CubeLAPLMake(void);
  /* Builds a cube from six squared walls. Returns one place from each wall.    
    Wall 0 is the bottom, walls 1..4 are the sides, wall 5 is the
    top, as shown below.

    |      +------+
    |      |      |
    |      |      |
    |      |5     |
    |      +------+------+------+------+
    |      |      |      |      |      |
    |      |      |      |      |      |
    |      |1     |2     |3     |4     |
    |      +------+------+------+------+
    |      |      |
    |      |      |
    |      |0     |
    |      +------+
    */               
   
typedef struct EightNodes_t { Node_t v[8]; } EightNodes_t;

EightNodes_t CubeNegNodes(Place_t p);
  /* The nodes of the negative cube of {a} ({PnegP(a)}). */

r4_t CubeBarycenter(Place_t p, Coords_t *c);
  /* The barycenter of the negative cube of {p}. */

Place_t GlueCube(Place_t p, Place_t b);
  /* Make the glueing of two simples cubes around of one squared wall common.
     The {p} and their adjacentes on the same wall component is killed. */

void FixCoordsCube(SixPlaces_t *ca, ElemTableRec_t *top, Coords_t *c);
  /*  Set the node coordinates of the cube cell {ca} to the
    canonical geometry, the cube {[-1 _ +1]^3}. */

#define CubeLAPL_H_author \
  "C interface created by J. Stolfi, jan/2007."

#endif