main.c

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/* =============================================================================
**  This file is part of the mmg software package for the
**  mesh modification.
**  Copyright (c) Bx INP/Inria/UBordeaux/UPMC, 2004- .
**
**  mmg is free software: you can redistribute it and/or modify it
**  under the terms of the GNU Lesser General Public License as published
**  by the Free Software Foundation, either version 3 of the License, or
**  (at your option) any later version.
**
**  mmg is distributed in the hope that it will be useful, but WITHOUT
**  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
**  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
**  License for more details.
**
**  You should have received a copy of the GNU Lesser General Public
**  License and of the GNU General Public License along with mmg (in
**  files COPYING.LESSER and COPYING). If not, see
**  <http://www.gnu.org/licenses/>. Please read their terms carefully and
**  use this copy of the mmg distribution only if you accept them.
** =============================================================================
*/
 
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include <float.h>
 
// if the header file is in the "include" directory
// #include "libmmgs.h"
// if the header file is in "include/mmg/mmgs"
#include "mmg/mmgs/libmmgs.h"
 
#define MAX0(a,b)     (((a) > (b)) ? (a) : (b))
#define MAX3(a,b,c)  (((MAX0(a,b)) > c) ? (MAX0(a,b)) : c)
 
int main(int argc,char *argv[]) {
  MMG5_pMesh      mmgMesh;
  MMG5_pSol       mmgSol;
  int             ier;
  /* To save final mesh in a file */
  FILE*           inm;
  /* To manually recover the mesh */
  MMG5_int        k,np, nt, na, nc, nr, nreq,ref,Tria[3], Edge[2];
  int             typEntity, typSol;
  int             *corner, *required, *ridge;
  double          Point[3],Sol;
  char            *fileout,*solout;
 
  fprintf(stdout,"  -- TEST MMGSLIB \n");
 
  if ( argc != 2 ) {
    printf(" Usage: %s fileout\n",argv[0]);
    return(1);
  }
 
  /* Name and path of the mesh file */
  fileout = (char *) calloc(strlen(argv[1]) + 6, sizeof(char));
  if ( fileout == NULL ) {
    perror("  ## Memory problem: calloc");
    exit(EXIT_FAILURE);
  }
  strcpy(fileout,argv[1]);
  strcat(fileout,".mesh");
 
  solout = (char *) calloc(strlen(argv[1]) + 5, sizeof(char));
  if ( solout == NULL ) {
    perror("  ## Memory problem: calloc");
    exit(EXIT_FAILURE);
  }
  strcpy(solout,argv[1]);
  strcat(solout,".sol");
 
  /* args of InitMesh:
   * MMG5_ARG_start: we start to give the args of a variadic func
   * MMG5_ARG_ppMesh: next arg will be a pointer over a MMG5_pMesh
   * &mmgMesh: pointer toward your MMG5_pMesh (that store your mesh)
   * MMG5_ARG_ppMet: next arg will be a pointer over a MMG5_pSol storing a metric
   * &mmgSol: pointer toward your MMG5_pSol (that store your metric) */
  mmgMesh = NULL;
  mmgSol  = NULL;
 
  MMGS_Init_mesh(MMG5_ARG_start,
                 MMG5_ARG_ppMesh,&mmgMesh,MMG5_ARG_ppMet,&mmgSol,
                 MMG5_ARG_end);
 
  if ( MMGS_Set_meshSize(mmgMesh,12,20,0) != 1 )  exit(EXIT_FAILURE);
 
  if ( MMGS_Set_vertex(mmgMesh,0  ,0  ,0  ,0,  1) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,0.5,0  ,0  ,0,  2) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,0.5,0  ,1  ,0,  3) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,0  ,0  ,1  ,0,  4) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,0  ,1  ,0  ,0,  5) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,0.5,1  ,0  ,0,  6) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,0.5,1  ,1  ,0,  7) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,0  ,1  ,1  ,0,  8) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,1  ,0  ,0  ,0,  9) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,1  ,1  ,0  ,0, 10) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,1  ,0  ,1  ,0, 11) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_vertex(mmgMesh,1  ,1  ,1  ,0, 12) != 1 )  exit(EXIT_FAILURE);
 
 
  if ( MMGS_Set_triangle(mmgMesh,  1,  4,  8, 3, 1) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  1,  2,  4, 3, 2) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  8,  3,  7, 3, 3) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  5,  8,  6, 3, 4) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  5,  6,  2, 3, 5) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  5,  2,  1, 3, 6) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  5,  1,  8, 3, 7) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  7,  6,  8, 3, 8) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  4,  3,  8, 3, 9) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  2,  3,  4, 3,10) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  9,  3,  2, 4,11) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh, 11,  9, 12, 4,12) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  7, 11, 12, 4,13) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  6,  7, 10, 4,14) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  6, 10,  9, 4,15) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  6,  9,  2, 4,16) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh, 12, 10,  7, 4,17) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh, 12,  9, 10, 4,18) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  3, 11,  7, 4,19) != 1 )  exit(EXIT_FAILURE);
  if ( MMGS_Set_triangle(mmgMesh,  9, 11,  3, 4,20) != 1 )  exit(EXIT_FAILURE);
 
 
  if ( MMGS_Set_solSize(mmgMesh,mmgSol,MMG5_Vertex,12,MMG5_Scalar) != 1 )
    exit(EXIT_FAILURE);
 
  for(k=1 ; k<=12 ; k++) {
    if ( MMGS_Set_scalarSol(mmgSol,0.5,k) != 1 ) exit(EXIT_FAILURE);
  }
 
  if ( MMGS_Chk_meshData(mmgMesh,mmgSol) != 1 ) exit(EXIT_FAILURE);
 
  ier = MMGS_mmgslib(mmgMesh,mmgSol);
 
  if ( ier == MMG5_STRONGFAILURE ) {
    fprintf(stdout,"BAD ENDING OF MMGSLIB: UNABLE TO SAVE MESH\n");
    return(ier);
  } else if ( ier == MMG5_LOWFAILURE )
    fprintf(stdout,"BAD ENDING OF MMGSLIB\n");
 
 
  if( !(inm = fopen(fileout,"w")) ) {
    fprintf(stderr,"  ** UNABLE TO OPEN OUTPUT MESH FILE.\n");
    exit(EXIT_FAILURE);
  }
  fprintf(inm,"MeshVersionFormatted 2\n");
  fprintf(inm,"\nDimension 3\n");
 
  if ( MMGS_Get_meshSize(mmgMesh,&np,&nt,&na) !=1 )  exit(EXIT_FAILURE);
 
  /* Table to know if a vertex is corner */
  corner = (int*)calloc(np+1,sizeof(int));
  if ( !corner ) {
    perror("  ## Memory problem: calloc");
    exit(EXIT_FAILURE);
  }
  /* Table to know if a vertex/tetra/tria/edge is required */
  required = (int*)calloc(MAX3(np,nt,na)+1 ,sizeof(int));
  if ( !required ) {
    perror("  ## Memory problem: calloc");
    exit(EXIT_FAILURE);
  }
  /* Table to know if a coponant is corner and/or required */
  ridge = (int*)calloc(na+1 ,sizeof(int));
  if ( !ridge ) {
    perror("  ## Memory problem: calloc");
    exit(EXIT_FAILURE);
  }
 
  nreq = 0; nc = 0;
  fprintf(inm,"\nVertices\n%"MMG5_PRId"\n",np);
  for(k=1; k<=np; k++) {
    if ( MMGS_Get_vertex(mmgMesh,&(Point[0]),&(Point[1]),&(Point[2]),
                          &ref,&(corner[k]),&(required[k])) != 1 )
      exit(EXIT_FAILURE);
    fprintf(inm,"%.15lg %.15lg %.15lg %"MMG5_PRId" \n",Point[0],Point[1],Point[2],ref);
    if ( corner[k] )  nc++;
    if ( required[k] )  nreq++;
  }
  fprintf(inm,"\nCorners\n%"MMG5_PRId"\n",nc);
  for(k=1; k<=np; k++) {
    if ( corner[k] )  fprintf(inm,"%"MMG5_PRId" \n",k);
  }
  fprintf(inm,"\nRequiredVertices\n%"MMG5_PRId"\n",nreq);
  for(k=1; k<=np; k++) {
    if ( required[k] )  fprintf(inm,"%"MMG5_PRId" \n",k);
  }
  free(corner);
  corner = NULL;
 
  nreq = 0;
  fprintf(inm,"\nTriangles\n%"MMG5_PRId"\n",nt);
  for(k=1; k<=nt; k++) {
    if ( MMGS_Get_triangle(mmgMesh,&(Tria[0]),&(Tria[1]),&(Tria[2]),
                            &ref,&(required[k])) != 1 )
      exit(EXIT_FAILURE);
    fprintf(inm,"%"MMG5_PRId" %"MMG5_PRId" %"MMG5_PRId" %"MMG5_PRId" \n",
            Tria[0],Tria[1],Tria[2],ref);
    if ( required[k] )  nreq++;
  }
  fprintf(inm,"\nRequiredTriangles\n%"MMG5_PRId"\n",nreq);
  for(k=1; k<=nt; k++) {
    if ( required[k] )  fprintf(inm,"%"MMG5_PRId" \n",k);
  }
 
  nreq = 0;nr = 0;
  fprintf(inm,"\nEdges\n%"MMG5_PRId"\n",na);
  for(k=1; k<=na; k++) {
    if ( MMGS_Get_edge(mmgMesh,&(Edge[0]),&(Edge[1]),&ref,
                        &(ridge[k]),&(required[k])) != 1 )  exit(EXIT_FAILURE);
    fprintf(inm,"%"MMG5_PRId" %"MMG5_PRId" %"MMG5_PRId" \n",Edge[0],Edge[1],ref);
    if ( ridge[k] )  nr++;
    if ( required[k] )  nreq++;
  }
  fprintf(inm,"\nRequiredEdges\n%"MMG5_PRId"\n",nreq);
  for(k=1; k<=na; k++) {
    if ( required[k] )  fprintf(inm,"%"MMG5_PRId" \n",k);
  }
  fprintf(inm,"\nRidges\n%"MMG5_PRId"\n",nr);
  for(k=1; k<=na; k++) {
    if ( ridge[k] )  fprintf(inm,"%"MMG5_PRId" \n",k);
  }
 
  fprintf(inm,"\nEnd\n");
  fclose(inm);
 
  free(required);
  required = NULL;
  free(ridge);
  ridge    = NULL;
 
  if( !(inm = fopen(solout,"w")) ) {
    fprintf(stderr,"  ** UNABLE TO OPEN OUTPUT SOL FILE.\n");
    exit(EXIT_FAILURE);
  }
  fprintf(inm,"MeshVersionFormatted 2\n");
  fprintf(inm,"\nDimension 3\n");
 
  if ( MMGS_Get_solSize(mmgMesh,mmgSol,&typEntity,&np,&typSol) != 1 )
    exit(EXIT_FAILURE);
 
  if ( ( typEntity != MMG5_Vertex )  || ( typSol != MMG5_Scalar ) )
    exit(EXIT_FAILURE);
 
  fprintf(inm,"\nSolAtVertices\n%"MMG5_PRId"\n",np);
  fprintf(inm,"1 1 \n\n");
  for(k=1; k<=np; k++) {
    if ( MMGS_Get_scalarSol(mmgSol,&Sol) != 1 )  exit(EXIT_FAILURE);
    fprintf(inm,"%.15lg \n",Sol);
  }
  fprintf(inm,"\nEnd\n");
  fclose(inm);
 
  MMGS_Free_all(MMG5_ARG_start,
                MMG5_ARG_ppMesh,&mmgMesh,MMG5_ARG_ppMet,&mmgSol,
                MMG5_ARG_end);
 
  free(fileout);
  fileout = NULL;
 
  free(solout);
  solout = NULL;
 
  return(ier);
}