text: /*
   * Copyright (c) 2005-2017 National Technology & Engineering Solutions
   * of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
   * NTESS, the U.S. Government retains certain rights in this software.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *
   *     * Redistributions in binary form must reproduce the above
   *       copyright notice, this list of conditions and the following
   *       disclaimer in the documentation and/or other materials provided
   *       with the distribution.
   *
   *     * Neither the name of NTESS nor the names of its
   *       contributors may be used to endorse or promote products derived
   *       from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   */
  
  #include "exodusII.h"     // for ex_err, etc
  #include "exodusII_int.h" // for EX_FATAL, ex_comp_ws, etc
  #include "vtk_netcdf.h"       // for NC_NOERR, etc
  #include <inttypes.h>     // for PRId64
  #include <stddef.h>       // for size_t
  #include <stdio.h>
  #include <sys/types.h> // for int64_t
  
  /*!
   * reads the coordinates of some of the nodes in the model for the specified component
   * Memory must be allocated for the coordinate array (coor)
   * before this call is made. The length of the array is at least `num_nodes`
   * Because the coordinates
   * are floating point values, the application code must declare the
   * array passed to be the appropriate type "float" or "double"
   * to match the compute word size passed in ex_create() or ex_open()
   * \param      exoid  exodus file id
   * \param      start_node_num  the starting index of the coordinates to be
   * returned.
   * \param      num_nodes  the number of nodes to read coordinates for.
   * \param      component  which component (1=X, 2=Y, 3=Z)
   * \param[out] coor Returned coordinate of the nodes for the specified component.
   */
  
  int ex_get_partial_coord_component(int exoid, int64_t start_node_num, int64_t num_nodes,
                                     int component, void *coor)
  {
    int status;
    int coordid;
  
    int    numnoddim, ndimdim;
    size_t num_nod;
    size_t num_dim, start[2], count[2];
    char   errmsg[MAX_ERR_LENGTH];
  
    EX_FUNC_ENTER();
    ex_check_valid_file_id(exoid, __func__);
  
    /* inquire id's of previously defined dimensions  */
  
    if (nc_inq_dimid(exoid, DIM_NUM_NODES, &numnoddim) != NC_NOERR) {
      /* If not found, then this file is storing 0 nodes.
         Return immediately */
      EX_FUNC_LEAVE(EX_NOERR);
    }
  
    if ((status = nc_inq_dimlen(exoid, numnoddim, &num_nod)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to get number of nodes in file id %d", exoid);
      ex_err(__func__, errmsg, status);
      EX_FUNC_LEAVE(EX_FATAL);
    }
  
    --start_node_num;
    if (start_node_num + num_nodes > num_nod) {
      snprintf(errmsg, MAX_ERR_LENGTH,
               "ERROR: start index (%" PRId64 ") + node count (%" PRId64
               ") is larger than total number of nodes (%" ST_ZU ") in file id %d",
               start_node_num, num_nodes, num_nod, exoid);
      ex_err(__func__, errmsg, EX_BADPARAM);
      EX_FUNC_LEAVE(EX_FATAL);
    }
  
    if (ex_get_dimension(exoid, DIM_NUM_DIM, "dimensions", &num_dim, &ndimdim, __func__) !=
        NC_NOERR) {
      EX_FUNC_LEAVE(EX_FATAL);
    }
  
    if (component > num_dim) {
      snprintf(errmsg, MAX_ERR_LENGTH,
               "ERROR: Component (%d) is larger than number of dimensions (%" ST_ZU ") in file id %d",
               component, num_dim, exoid);
      ex_err(__func__, errmsg, EX_BADPARAM);
      EX_FUNC_LEAVE(EX_FATAL);
    }
    --component;
  
    /* read in the coordinates  */
    if (ex_large_model(exoid) == 0) {
      if ((status = nc_inq_varid(exoid, VAR_COORD, &coordid)) != NC_NOERR) {
        snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to locate nodal coordinates in file id %d",
                 exoid);
        ex_err(__func__, errmsg, status);
        EX_FUNC_LEAVE(EX_FATAL);
      }
  
      {
        char *which;
        start[0] = component;
        start[1] = start_node_num;
  
        count[0] = 1;
        count[1] = num_nodes;
        if (count[1] == 0) {
          start[1] = 0;
        }
  
        if (component == 0) {
          which = "X";
        }
        else if (component == 1) {
          which = "Y";
        }
        else if (component == 2) {
          which = "Z";
        }
  
        if (ex_comp_ws(exoid) == 4) {
          status = nc_get_vara_float(exoid, coordid, start, count, coor);
        }
        else {
          status = nc_get_vara_double(exoid, coordid, start, count, coor);
        }
  
        if (status != NC_NOERR) {
          snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to get %s coord array in file id %d", which,
                   exoid);
          ex_err(__func__, errmsg, status);
          EX_FUNC_LEAVE(EX_FATAL);
        }
      }
    }
    else {
      /* write out the coordinates  */
      {
        char *which = NULL;
        char *comp  = NULL;
  
        start[0] = start_node_num;
        count[0] = num_nodes;
        if (count[0] == 0) {
          start[0] = 0;
        }
  
        if (component == 0) {
          which = "X";
          comp  = VAR_COORD_X;
        }
        else if (component == 1) {
          which = "Y";
          comp  = VAR_COORD_Y;
        }
        else if (component == 2) {
          which = "Z";
          comp  = VAR_COORD_Z;
        }
  
        if ((status = nc_inq_varid(exoid, comp, &coordid)) != NC_NOERR) {
          snprintf(errmsg, MAX_ERR_LENGTH,
                   "ERROR: failed to locate %s nodal coordinates in file id %d", which, exoid);
          ex_err(__func__, errmsg, status);
          EX_FUNC_LEAVE(EX_FATAL);
        }
  
        if (ex_comp_ws(exoid) == 4) {
          status = nc_get_vara_float(exoid, coordid, start, count, coor);
        }
        else {
          status = nc_get_vara_double(exoid, coordid, start, count, coor);
        }
  
        if (status != NC_NOERR) {
          snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to get %s coord array in file id %d", which,
                   exoid);
          ex_err(__func__, errmsg, status);
          EX_FUNC_LEAVE(EX_FATAL);
        }
      }
    }
    EX_FUNC_LEAVE(EX_NOERR);
  }
  