Exemplo n.º 1
0
static Error ConvertFieldObject(Object out, char *strin)
{

Class cl;
int i, rank, shape[30], numitems;
Type type;
Category category;
Array data, new_data;
RGBColor *dp_old, *dp_new;
Object subo;
float red, green, blue, hue, sat, val;
    
    if (!(cl = DXGetObjectClass(out))) 
      return ERROR;
    switch (cl) {
       case CLASS_GROUP:
	  for (i=0; (subo = DXGetEnumeratedMember((Group)out, i, NULL)); i++) {
            if (!ConvertFieldObject((Object)subo, strin))
	        return ERROR;
            }
	  break;
       case CLASS_FIELD:
          if (DXEmptyField((Field)out))
             return OK;
          data = (Array)DXGetComponentValue((Field)out,"data");
          if (!data) { 
             DXSetError(ERROR_MISSING_DATA,"#10240", "data");
             return ERROR;
          }
          DXGetArrayInfo(data,&numitems,&type,&category,&rank,shape);
          if ((type != TYPE_FLOAT)||(category != CATEGORY_REAL)) {
             DXSetError(ERROR_DATA_INVALID,"#10331", "data");
             return ERROR;
          }
          if ((rank != 1)||(shape[0] != 3)) {
             DXSetError(ERROR_DATA_INVALID,"#10331", "data");
             return ERROR;
          }
          new_data = DXNewArray(TYPE_FLOAT,CATEGORY_REAL,1,3);
          new_data = DXAddArrayData(new_data, 0, numitems, NULL);
          dp_old = (RGBColor *)DXGetArrayData(data);
          dp_new = (RGBColor *)DXGetArrayData(new_data);
          if (!strcmp(strin,"hsv"))  {
              for (i=0; i<numitems; i++) {
                 if (!_dxfHSVtoRGB(dp_old[i].r, dp_old[i].g, dp_old[i].b,
                               &red, &green, &blue))
                     return ERROR;
                 dp_new[i] = DXRGB(red,green,blue);
              }
          }
          else {
              for (i=0; i<numitems; i++) {
                 if (!_dxfRGBtoHSV(dp_old[i].r, dp_old[i].g, dp_old[i].b,
                               &hue, &sat, &val))
                     return ERROR;
                 dp_new[i] = DXRGB(hue, sat, val);
              }
          }
          DXSetComponentValue((Field)out, "data", (Object)new_data);
          DXChangedComponentValues((Field)out,"data");
          DXEndField((Field)out);
	  break;
       default:
          break;
    }

    return OK; 
    
  }
Exemplo n.º 2
0
int
m_Convert(Object *in, Object *out)
{
  Array    incolorvec, outcolorvec;
  int      ismap, isfield, count, i, ii, numitems, addpoints;
  char     *colorstrin, *colorstrout; 
  char     newstrin[30], newstrout[30];
  Object   gout;
  float    *dpin=NULL, *dpout=NULL;

  gout=NULL;
  incolorvec = NULL;
  outcolorvec = NULL;
   
  if (!in[0]) {
    DXSetError(ERROR_MISSING_DATA,"#10000","data");
    return ERROR;
  }
  out[0] = in[0];
  ismap = 0; 
  isfield = 0; 
  

  /*
   *  if it's an array (vector or list of vectors)
   */

  if (DXGetObjectClass(in[0]) == CLASS_ARRAY) {
    if (!(DXQueryParameter((Object)in[0], TYPE_FLOAT, 3, &numitems))) {
      /* must be a list of 3-vectors or a field */
      DXSetError(ERROR_BAD_PARAMETER,"#10550","data");
      out[0] = NULL;
      return ERROR;
    }
    if (!(incolorvec = DXNewArray(TYPE_FLOAT,CATEGORY_REAL, 1, 3))){
      out[0] = NULL;
      return ERROR;
    }
    if (!(DXAddArrayData(incolorvec,0,numitems,NULL)))
      goto error;
    if (!(dpin = (float *)DXGetArrayData(incolorvec)))
      goto error;
    if (!(DXExtractParameter((Object)in[0], TYPE_FLOAT, 3, numitems,
			   (Pointer)dpin))) {
      /* must be a list of 3-vectors or a field */
      DXSetError(ERROR_BAD_PARAMETER,"#10550","data");
      goto error;
    }

    /*    
     *  also make the output array
     */
    if (!(outcolorvec = DXNewArray(TYPE_FLOAT,CATEGORY_REAL, 1, 3)))
      goto error;
    if (!(DXAddArrayData(outcolorvec,0,numitems,NULL)))
      goto error;
    if (!(dpout = (float *)DXGetArrayData(outcolorvec)))
      goto error;

  }
  else { 
    if (_dxfIsColorMap(in[0])) 
      ismap = 1;
    else {
      DXResetError();
      isfield = 1;
    }
  }




  
  /* now extract the to and from space names */
  /*  get color name  */
  if (!(in[1]))
    colorstrin = "hsv";
  else 
    if (!DXExtractString((Object)in[1], &colorstrin)) {
      /* invalid input string */
      DXSetError(ERROR_BAD_PARAMETER,"#10200","incolorspace");
      goto error;
    }
  /*  convert color name to all lower case and remove spaces */
  count = 0;
  i = 0;
  while ( i<29 && colorstrin[i] != '\0') {
    if (isalpha(colorstrin[i])){
      if (isupper(colorstrin[i]))
	newstrin[count]= tolower(colorstrin[i]);
      else
	newstrin[count]= colorstrin[i];
      count++;
    }
    i++;
  }

  newstrin[count]='\0';
  if (strcmp(newstrin,"rgb")&&strcmp(newstrin,"hsv")) {
    DXSetError(ERROR_BAD_PARAMETER,"#10210", newstrin, "incolorspace");
    goto error;
  }
  
  
  if (!in[2]) 
    colorstrout = "rgb";
  else if (!DXExtractString((Object)in[2], &colorstrout)) {
      /* invalid outcolorspace string */
    DXSetError(ERROR_BAD_PARAMETER,"#10200","outcolorspace");
    goto error;
  }
  
  /*  convert color name to all lower case and remove spaces */
  count = 0;
  i = 0;
  while ( i<29 && colorstrout[i] != '\0') {
    if (isalpha(colorstrout[i])){
      if (isupper(colorstrout[i]))
	newstrout[count]= tolower(colorstrout[i]);
      else
	newstrout[count]= colorstrout[i];
      count++;
    }
    i++;
  }
  newstrout[count]='\0';
  if (strcmp(newstrout,"rgb")&&strcmp(newstrout,"hsv")){
    /* invalid outcolorspace string */
    DXSetError(ERROR_BAD_PARAMETER,"#10210", newstrout, "outcolorspace");
    goto error;
  }
  
  if (!strcmp(newstrin,newstrout)) {
    DXWarning("incolorspace and outcolorspace are the same");
    return OK;
  }

  if (!in[3]) {
     /* default behavior is to treat maps like maps (adding points)
        and to treat fields like fields (not adding points) */
  }
  else {
     if (!DXExtractInteger(in[3], &addpoints)) {
        DXSetError(ERROR_BAD_PARAMETER, "#10070",
                   "addpoints");
        goto error;
     }
     if ((addpoints < 0) || (addpoints > 1)) {
        DXSetError(ERROR_BAD_PARAMETER, "#10070",
                   "addpoints");
        goto error;
     }
     if (isfield && addpoints) {
        DXSetError(ERROR_BAD_PARAMETER, "#10370",
         "for a field with greater than 1D positions, addpoints", "0");
        goto error;
     }
     if (ismap && (!addpoints)) {
        /* treat the map like a field */
        ismap = 0;
        isfield = 1;
     }
  }

  /* we have been given a vector value or list of values, not a map */
  if ((!ismap)&&(!isfield)) {
    if (!strcmp(newstrin,"hsv")) {
      for (ii = 0; ii < numitems*3; ii = ii+3) {
	if (!(_dxfHSVtoRGB(dpin[ii], dpin[ii+1], dpin[ii+2],
		       &dpout[ii], &dpout[ii+1], &dpout[ii+2]))) 
	  goto error;
      }
    }
    else {
      for (ii = 0; ii < numitems*3; ii = ii+3) {
	if (!(_dxfRGBtoHSV(dpin[ii], dpin[ii+1], dpin[ii+2],
		       &dpout[ii], &dpout[ii+1], &dpout[ii+2]))) 
	  goto error;
      }
    }
    out[0] = (Object)outcolorvec;
    DXDelete((Object)incolorvec);
    return OK;
  }

  /* we have a map or field */
  else {
    if (ismap) {
      if (!(ConvertObject(in[0], newstrin, &gout)))
        goto error;
    }
    else {
      gout = DXCopy(in[0], COPY_STRUCTURE);
      if (!gout) goto error;
      if (!(ConvertFieldObject(gout, newstrin)))
         goto error;
    }
    out[0] = gout;
    return OK;
  }

  error:
    out[0] = NULL;
    DXDelete((Object)gout);
    DXDelete((Object)incolorvec);
    DXDelete((Object)outcolorvec);
    return ERROR;
}
Exemplo n.º 3
0
Error m_SXRegrid( Object *in, Object *out ){
/*
*+
*  Name:
*     SXRegrid

*  Purpose:
*     samples a field at positions defined by a another field

*  Language:
*     ANSI C

*  Syntax:
*     output = SXRegrid( input, grid, nearest, radius, scale, exponent,
*                        coexp, type );

*  Classification:
*     Realisation

*  Description:
*     The SXRegrid module samples the "data" component of the "input"
*     field at the positions held in the "positions" component of the
*     "grid" field. It is similar to the standard "Regrid" module, but
*     provides more versatility in assigning weights to each input position,
*     the option of returning the sums of the weights or the weighted sum
*     instead of the weighted mean, and seems to be much faster. Both
*     supplied fields can hold scattered or regularly gridded points, and
*     need not contain "connections" components. The "data" component in the
*     "input" field must depend on "positions".
*
*     For each grid position, a set of near-by positions in the input
*     field are found (using "nearest" and "radius"). Each of these input
*     positions is given a weight dependant on its distance from the current
*     grid position. The output data value (defined at the grid position) can
*     be the weighted mean or weighted sum of these input data values, or
*     the sum of the weights (selected by "type").
*
*     The weight for each input position is of the form:
*
*        (d/d0)**exponent
*
*     where "d" is the distance from the current grid position to the
*     current input position. If a single value is given for "scale" then
*     that value is used for the d0 constant for all the near-by input
*     positions. If more than 1 value is given for "scale" then the first
*     value is used for the closest input position, the second value for the
*     next closest, etc. The last supplied value is used for any remaining
*     input positions. A value of zero for "scale" causes the
*     corresponding input position to be given zero weight.
*
*     If "coexp" is not zero, then the above weights are modified to
*     become:
*
*        exp( coexp*( (d/d0)**exponent ) )
*
*     If "nearest" is given an integer value, it specifies N, the maximum
*     number of near-by input positions to use for each output position.
*     The N input positions which are closest to the output position are
*     used. If the string "infinity" is given, then all input positions
*     closer than the distance given by "radius" are used. Using "radius",
*     you may specify a maximum radius (from the output position) within
*     which to find the near-by input positions. If the string "infinity"
*     is given for "radius" then no limit is placed on the radius.

*  Parameters:
*     input = field (Given)
*        field or group with positions to regrid [none]
*     grid = field (Given)
*        grid to use as template [none]
*     nearest = integer or string (Given)
*        number of nearest neighbours to use, or "infinity" [1]
*     radius = scalar or string (Given)
*        radius from grid point to consider, or "infinity" ["infinity"]
*     scale = scalar or vector or scalar list (Given)
*        scale lengths for weights [1.0]
*     exponent = scalar (Given)
*        weighting exponent [1.0]
*     coexp = scalar (Given)
*        exponential co-efficient for weights [0.0]
*     type = integer (Given)
*        type of output values required: 0 - weighted mean, 1 - weighted sum,
*                                        2 - sum of weights [0]
*     output = field (Returned)
*        regridded field

*  Components:
*     All components except the "data" component are copied from the "grid"
*     field. The output "data" component added by this module depends on
*     "positions". An "invalid positions" component is added if any output
*     data values could not be calculated (e.g. if there are no near-by input
*     data values to define the weighted mean, or if the weights are too
*     large to be represented, or if the input grid position was invalid).

*  Examples:
*     This example maps the scattered data described in "CO2.general" onto a
*     regular grid, and displays it. SXRegrid is used to find the data value
*     at the nearest input position to each grid position.
*
*        input = Import("/usr/lpp/dx/samples/data/CO2.general")$
*        frame17 = Select(input,17);
*        camera = AutoCamera(frame17);
*        grid = Construct([-100,-170],deltas=[10,10],counts=[19,34]);
*        regrid = SXRegrid(frame17,grid);
*        coloured = AutoColor(regrid);
*        Display(coloured,camera);
*
*     The next example produces a grid containing an estimate of the density
*     of the scattered points (i.e. the number of points per unit area). The
*     positions of the original scattered points are shown as dim grey
*     circles. SXRegrid finds the 5 closest input positions at each grid
*     position. Zero weight is given to the closest 3 positions. The fourth
*     position has a weight which is half the density of the points within the
*     circle passing through the fourth point (i.e. if the fourth point
*     is at a distance D from the current grid position, there are 3 points
*     within a circle of radius D, so the density within that circle is
*     3/(PI*(D**2)) ). The fifth position has a weight which is half the
*     density of the points within the circle passing through the fifth
*     point. The output data value is the sum of the weights (because
*     "type" is set to 2), which is the mean of the densities within the
*     circles touching the fourth and fifth points.
*
*        input = Import("/usr/lpp/dx/samples/data/CO2.general")$
*        frame17 = Select(input,17);
*        camera = AutoCamera(frame17);
*        glyphs=AutoGlyph(frame17,scale=0.1,ratio=1);
*        glyphs=Color(glyphs,"dim grey");
*        grid = Construct([-100,-170],deltas=[10,10],counts=[19,34]);
*        density=SXRegrid(frame17,grid,nearest=5,scale=[0,0,0,0.691,0.798],
*                         exponent=-2,type=2);
*        coloured = AutoColor(density);
*        collected=Collect(coloured,glyphs);
*        Display(collected,camera);

*  See Also:
*     SXBin, ReGrid, Map, Construct

*  Returned Value:
*     OK, unless an error occurs in which case ERROR is returned and the
*     DX error code is set.

*  Copyright:
*     Copyright (C) 1995 Central Laboratory of the Research Councils.
*     All Rights Reserved.

*  Licence:
*     This program is free software; you can redistribute it and/or
*     modify it under the terms of the GNU General Public License as
*     published by the Free Software Foundation; either version 2 of
*     the License, or (at your option) any later version.
*
*     This program 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 General Public License for more details.
*
*     You should have received a copy of the GNU General Public License
*     along with this program; if not, write to the Free Software
*     Foundation, Inc., 51 Franklin Street,Fifth Floor, Boston, MA
*     02110-1301, USA

*  Authors:
*     DSB: David Berry (STARLINK)
*     {enter_new_authors_here}

*  History:
*     3-OCT-1995 (DSB):
*        Original version
*     {enter_further_changes_here}

*  Bugs:
*     {note_any_bugs_here}

*-
*/


/*  Local Variables: */

      Category cat;          /* Array category type */
      float    coexp;        /* Exponential co-efficient for weights */
      Type     dtype;        /* Type of current input data array */
      float    ext;          /* Amount by which to extend grid bounds */
      int      fld;          /* Field counter */
      Object   grid;         /* The grid object */
      float   *gridpos;      /* Pointer to grid positions array */
      int      i;            /* Loop count */
      void    *indata[MAXFLD];/* Pointer to input data array */
      float   *inpos;        /* Pointer to input positions array */
      Array    inpos_array;  /* Input positions array */
      Object   input;        /* A copy of the input object */
      int      iopt;         /* Index of selected option */
      int      j;            /* Loop count */
      float    lbnd[3];      /* Lower bounds of grid */
      char    *opt;          /* Textual option for a parameter value */
      float    radius;       /* Max. radius for contributing input positions */
      char     more;         /* Are there more input fields to do? */
      int      nearest;       /* Max. no. of input positions which can contribute to an output position */
      Fpair   *next;         /* The next Fpair structure in the linked list */
      int      ndim;         /* No. of dimensions in grid positions array */
      int      nfld;         /* No. of fields sharing current positions array */
      int      npos;         /* No. of input positions */
      int      npindim;      /* No. of dimensions in input positions array */
      int      nsamp;        /* No. of grid positions */
      int      nscale;       /* No. of scale distances supplied */
      int      outbad[MAXFLD];/* No. of invalid output positions in each field*/
      void    *outdata[MAXFLD];/* Pointers to output data arrays */
      Array    outdata_array;/* Output data array */
      Object   output;       /* The output object */
      int      outtype;      /* Type of output values required */
      float    exponent;     /* Power for weights */
      int      rank;         /* Array rank */
      float    rsc;          /* Reciprocal squared scale distance*/
      float   *rscale;       /* Scale distances for weights */
      int      tag;          /* The tag for the current input positions array */
      Type     type;         /* Array numeric type */
      float    ubnd[3];      /* Upper bounds of grid */
      int      veclen[MAXFLD];/* Dimensionality of each input data array */


/*  Initialise all created objects so that they can safely be deleted if
 *  an error occurs. */

      input = NULL;
      output = NULL;
      grid = NULL;
      outdata_array = NULL;


/*  Check that the "input" object has been supplied. */

      if( !in[0] ) {
         DXSetError( ERROR_BAD_PARAMETER, "missing parameter \"input\"." );
         goto error;
      }


/*  Remove (cull) all invalid positions and connections from the input. It is
 *  necessary to take a copy of the input first, because the input object
 *  itself cannot be modified. */

      input = DXCopy( in[0], COPY_STRUCTURE );
      if( !DXCull( input ) ) goto error;


/*  Check that the "grid" object has been supplied. */

      if( !in[1] ) {
         DXSetError( ERROR_BAD_PARAMETER, "missing parameter \"grid\"." );
         goto error;
      }


/*  Get a pointer to an array holding the grid positions, and get the
 *  size and shape of the grid. Any invalid positions are flagged with the
 *  value FLT_MAX (defined in float.h). */

      gridpos = SXGetGrid( in[1], &nsamp, &ndim, lbnd, ubnd, &grid );
      if( !gridpos ) goto error;


/*  Get the number of input positions allowed to contribute to each
 *  output position. */

      if( !in[2] ){
         nearest = 1;

      } else {

         opt = "infinity";
         if( !SXGet0is( "nearest", in[2], INT_MAX, 1, 1, &opt, &nearest, &iopt ) ) goto error;
         if( iopt == 0 ) nearest = INT_MAX;

      }


/*  Get the maximum radius for input positions which contribute to each
 *  output position. */

      if( !in[3] ){
         radius = FLT_MAX;

      } else {

         opt = "infinity";
         if( !SXGet0rs( "radius", in[3], FLT_MAX, 0.0, 1, &opt, &radius, &iopt ) ) goto error;
         if( iopt == 0 ) radius = FLT_MAX;

      }


/*  If a maximum radius has been given, extend the bounds by one radius
 *  at each end to catch some extra input positions. Otherwise, extend
 *  the bounds by 10%. */

      if( radius < FLT_MAX ){
         for( j=0; j<ndim; j++ ){
            lbnd[j] -= radius;
            ubnd[j] += radius;
         }

      } else {
         for( j=0; j<ndim; j++ ){
            ext = 0.1*( ubnd[j] - lbnd[j] );
            lbnd[j] -= ext;
            ubnd[j] += ext;
         }

      }


/*  Get the scale distances used to create weights for each input
 *  position. Convert them to squared reciprocal scale distances. If
 *  no value is supplied for the "scale" parameter, use a single scale
 *  length of 1.0 */

      if( !in[4] ){
         rsc = 1.0;
         rscale = &rsc;
         nscale = 1;

      } else {
         rscale = SXGet1r( "scale", in[4], &nscale );
         if( !rscale ) goto error;

         for( i=0; i<nscale; i++ ) {
            rsc = rscale[i];
            if( rsc != 0.0 ){
               rscale[i] = 1.0/(rsc*rsc);
            } else {
               rscale[i] = 0.0;
            }
         }

      }


/*  Get the exponent used to create weights for each input position. */

      if( !in[5] ){
         exponent = 1.0;
      } else {
         if( !SXGet0rs( "exponent", in[5], FLT_MAX, -FLT_MAX, 0, &opt, &exponent, &iopt ) ) goto error;
      }


/*  Get the co-efficient to used in the exponential when creating weights for
 *  each input position. */

      if( !in[6] ){
         coexp = 0.0;
      } else {
         if( !SXGet0rs( "coexp", in[6], FLT_MAX, -FLT_MAX, 0, &opt, &coexp, &iopt ) ) goto error;
      }


/*  Get the type of output value required. */

      if( !in[7] ){
         outtype = 0;
      } else {
         if( !SXGet0is( "type", in[7], 2, 0, 0, &opt, &outtype, &iopt ) ) goto error;
      }


/*  Produce a copy of the "input" object to use as the output, replacing all
 *  fields within it with the grid field. Also form a linked list of Fpair
 *  structures describing the fields. */

      output = SXMakeOut( input, (Field) grid, 1, 1, 3, "positions" );
      if( !output ) goto error;


/*  Abort if no fields were found. */

      if( !head ) {
         DXSetError( ERROR_DATA_INVALID, "no fields found in \"input\"." );
         goto error;
      }


/*  Go through the list of fields looking for fields which share the same
 *  positions component. */

      more = 1;
      while( more ){


/*  Find the first field with a non-zero positions tag. */

         next = head;
         while( next && !next->postag ) next = next->next;


/*  If no non-zero positions tags were found, we've finished. */

         if( !next ){
            more = 0;
            break;
         }


/*  Find the input positions array. Get its shape, size and type. Check it is
 *  usable. */

         inpos_array = (Array) next->pos;
         if( !DXGetArrayInfo( inpos_array, &npos, &type, &cat, &rank, &npindim ) ) goto error;

         if( type != TYPE_FLOAT ){
            DXSetError( ERROR_DATA_INVALID, "positions component in \"input\" is not of type FLOAT." );
            goto error;
         }

         if( cat != CATEGORY_REAL ){
            DXSetError( ERROR_DATA_INVALID, "positions component in \"input\" is not of category REAL." );
            goto error;
         }

         if( rank > 1 ){
            DXSetError( ERROR_DATA_INVALID, "rank %d positions component found in \"input\".", rank );
            goto error;
         }

         if( rank == 0 ){   /* Scalar data is equivalent to 1-d vector data */
            rank = 1;
            npindim = 1;
         }

         if( npindim != ndim ){
            DXSetError( ERROR_DATA_INVALID, "dimensionality of \"input\" (%d) does not match \"grid\" (%d).", npindim, ndim );
            goto error;
         }


/*  Get a pointer to the positions values. */

         inpos = (float *) DXGetArrayData( inpos_array );


/*  Find all fields which have the same positions tag and the same data
 *  type. */

         tag = next->postag;
         dtype = next->datatype;

         nfld = 0;
         while( next ){

            if( next->postag == tag && next->datatype == dtype ){


/*  Increment the number of fields found so far which share this
 *  positions component. */

               nfld++;

               if( nfld > MAXFLD ){
                  DXSetError( ERROR_MAX, "\"input\" has too many fields.", MAXFLD );
                  goto error;
               }


/*  Store a pointer to the input data array, and its dimensionality. */

              indata[nfld-1] = (void *) DXGetArrayData( (Array) next->data );
              veclen[nfld-1] = next->datalen;


/*  Make a new array to hold the output data values. The output data will
 *  have the same dimensionality as the input data unless the required output
 *  data is "sum of weights" (i.e. if parameter "type" is 2), in which case the
 *  output data will be scalar. */

              if( outtype == 2 ) veclen[nfld-1] = 1;

              outdata_array = DXNewArrayV( dtype, CATEGORY_REAL, 1, &veclen[nfld-1] );
              if( !outdata_array ) goto error;

              if( !DXAddArrayData( outdata_array, 0, nsamp, NULL ) ) goto error;


/*  Get a pointer to the output data array. */

              outdata[nfld-1] = (void *) DXGetArrayData( outdata_array );
              if( !outdata[nfld-1] ) goto error;


/*  Place the new data component in the output field, and indicate that
 *  it now does not need to be deleted explicitly in the event of an error. */

              if( !DXSetComponentValue( next->outfld, "data", (Object) outdata_array ) ) goto error;
              outdata_array = NULL;


/*  Indicate that the data component of the output field has been
 *  changed. */

              DXChangedComponentValues( next->outfld, "data" );


/*  Indicate that the data values are dependant on positions. */

              if( !DXSetComponentAttribute( next->outfld, "data", "dep",
                                        (Object) DXNewString("positions")) ) goto error;

            }

            next = next->next;

         }


/*  Now sample the input data arrays at the output positions, storing the
 *  resulting sample values in the output data arrays. */

         if( dtype == TYPE_FLOAT ){
            if( ! SXSampleF( nfld, ndim, veclen, npos, inpos, (float **)indata,
                             nsamp, gridpos, (float **) outdata, lbnd, ubnd,
                             nearest, radius, rscale, nscale, exponent, coexp,
                             outtype, outbad ) ) goto error;
         } else {
            if( ! SXSampleD( nfld, ndim, veclen, npos, inpos, (double **)indata,
                             nsamp, gridpos, (double **) outdata, lbnd, ubnd,
                             nearest, radius, rscale, nscale, exponent, coexp,
                             outtype, outbad ) ) goto error;
         }


/*  Loop round all the fields that have just been created. */

         next = head;
         fld = 0;
         while( next ){
            if( next->postag == tag ){


/*  Create invalid positions components in each output field which have any
 *  undefined data values */

               if( outbad[fld] ){
                  if( dtype == TYPE_FLOAT ){
                     if( !SXSetInvPosF( (Object) next->outfld, nsamp, veclen[fld],
                                        (float *) outdata[fld], "positions" ) ) goto error;
                  } else {
                     if( !SXSetInvPosD( (Object) next->outfld, nsamp, veclen[fld],
                                        (double *) outdata[fld], "positions" ) ) goto error;
                  }
               }



/*  Complete the construction of this output field. */

               DXEndField( next->outfld );


/*  Increment the field index, and indicate that this input field has
 *  been done. */

               fld++;
               next->postag = 0;

            }

            next = next->next;

         }


      }

error:

/*  Free the storage used to hold the link list of Fpair structures
 *  describing the fields in the "input" object. */

      while( head ){
         next = head->next;
         DXFree( (Pointer) head );
         head = next;
      }


/*  Delete the copy of the input objects. Return the "output" object with a good status. */

      DXDelete( grid );
      DXDelete( input );


/*  If all is OK, return the "output" object with a good status. */

      if( DXGetError() == ERROR_NONE ){
         out[0] = output;
         return( OK );


/*  If an error has occurred, ensure temporary objects are deleted and return
 *  with a bad status. */

      } else {
         DXDelete( (Object) outdata_array );
         DXDelete( output );
         return( ERROR );
      }

}
Exemplo n.º 4
0
extern Error CreateSocket(int *connect_fd, short port)
{
  int     i, fd, write_fd, sts, length; 
  fd_set  fds;
  struct  linger sl;
  struct  sockaddr_un userver;
  struct  timeval to; 
  

#if DXD_HAS_GETDTABLESIZE
    int width = getdtablesize();
#else
    int width = MAXFUPLIM;
#endif

  /* set up the socket */
  fd = socket(AF_UNIX, SOCK_STREAM, 0);
  if (fd < 0) {
    DXSetError(ERROR_INTERNAL, "failure to create socket");
    return ERROR;
  }
  
 
  /* set the socket options */ 
  sl.l_onoff = 1;
  sl.l_linger = 0;
  setsockopt(fd, SOL_SOCKET, SO_LINGER, (char *)&sl, sizeof(sl));
  
  memset((char *)&userver, 0, sizeof(userver));
  userver.sun_family = AF_UNIX;
  sprintf(userver.sun_path,"/tmp/.DX-unix/DX%d", port);
  length = sizeof (userver) - sizeof(userver.sun_path) +
    strlen (userver.sun_path);


  unlink(userver.sun_path); 
  
  sts = bind(fd, (struct sockaddr *)&userver, length);
  if (sts < 0) {
    DXSetError(ERROR_INTERNAL,"failure of bind");
    return ERROR;  
  }

  /* listen on the file-descriptor for a connection */
  if (listen(fd, SOCK_QUEUE_LENGTH) < 0) {
    DXSetError(ERROR_INTERNAL, "failure of listen");
    return ERROR;
  }
 
  /* wait until a connection is made on file-descriptor fd */ 
  FD_ZERO(&fds);
  FD_SET(fd, &fds);
  to.tv_sec = SOCK_ACCEPT_TIMEOUT;
  to.tv_usec = 0;

  sts = select(width, (SelectPtr) &fds, NULL, NULL, &to);

  if (sts < 0) {
    DXSetError(ERROR_INTERNAL,"failure of select");
    return ERROR;
  }
  else if (sts == 0) {
    DXSetError(ERROR_INTERNAL,"connection timed out");
    return ERROR;
  }

  /* accept the connection */  
  *connect_fd = accept(fd, (struct sockaddr *)&userver, &length);
 
  close(fd); 
  return OK;
 
}
Exemplo n.º 5
0
int
_dxfHWload(tdmPortHandleP  (**initPP)(Display*, char*), Display *dsp)
{
    /*
     * NOTE!!! XXX
     * If this code is compiled DEBUG and linked using the optimized flags to
     * makedx, you will seg fault. This is because if we are in debug we assume the
     * device dependent code to be staticly linked with the dxexec image, however,
     * the optimized flags expects the code below to demand load the device
     * dependent stuff.
     */
    char HWname[NAMELEN];		/* name of HW module for load()*/
    char HWpath[PATHLEN];
    char buff[NAMELEN+PATHLEN];	/* tmp file path/name buffer */
    char *error,*error2;
    static void*	save_init = NULL;

    ENTRY(("_dxfHWload(0x%x)", initPP));

    if(save_init) {
        *initPP = save_init;
        EXIT(("Using save_init"));
        return OK;
    }

    if (getenv("DXEXECROOT")) {

        strcpy(HWpath,getenv("DXEXECROOT"));
        strcat(HWpath,"/bin_ibm6000");

    } else if (getenv("DXROOT")) {

        strcpy(HWpath,getenv("DXROOT"));
        strcat(HWpath,"/bin_ibm6000");

    } else  {

        strcpy(HWpath,"/usr/lpp/dx/bin_ibm6000");

    }

    if (getenv("DXHWMOD")) {
        strcpy(HWname,getenv("DXHWMOD"));
        if(!(*initPP =  (tdmPortHandleP  (*)(Display*, char*))
                        _tryLoad(HWpath, HWname, &error))) {
            DXSetError(ERROR_BAD_PARAMETER, error, HWpath, HWname);
            goto error;
        }
    } else {
        if(!(*initPP =  (tdmPortHandleP  (*)(Display*, char*))
                        _tryLoad(HWpath, "DXhwdd.o", &error)))
            if(!(*initPP =  (tdmPortHandleP  (*)(Display*, char*))
                            _tryLoad(HWpath, "DXhwddOGL.o", &error2))) {
                if(error == error2) {
                    strcpy(buff, "DXhwdd.o or ");
                    strcat(buff,HWpath);
                    strcat(buff,"/");
                    strcat(buff,"DXhwddOGL.o");
                    DXSetError(ERROR_BAD_PARAMETER, error, HWpath, buff);
                }
                else {
                    DXSetError(ERROR_BAD_PARAMETER, error, HWpath, "DXhwdd.o");
                    DXAddMessage(error2, HWpath, "DXhwddOGL.o");
                }
                goto error;
            }
    }

    save_init = *initPP;

    EXIT(("OK"));
    return OK;

error:

    EXIT(("ERROR"));
    return ERROR;
}
Exemplo n.º 6
0
int
m_Unmark(Object *in, Object *out)
{
    char   *target;
    Object attr;

    if (!_dxfParmCheck(1, in[0], "input", NULL, NULL,
		       1, in[1], "component name", 1,
		          NULL, NULL, 0, 0)) {
	out[0] = NULL;
	return ERROR;
    }

    if (_dxfDXEmptyObject(in[0])) {
	DXWarning("#4000", "input");
	out[0] = in[0];
	return OK;
    }

    if (in[1])
	attr = in[1];
    else 
	attr = DXGetAttribute(in[0], "marked component");
    
    if (!attr || !DXExtractString(attr, &target))
    {
	DXSetError(ERROR_BAD_PARAMETER, "component name");
	return ERROR;
    }

    /* the only way it makes sense to unmark a field which doesn't have
     *  a data component is if the component you are unmarking is 'data'.
     *  (that is interpreted as a request to move the 'saved data' component
     *  back into 'data'.)
     */
    if (!DXExists(in[0], "data") && strcmp(target, "data")) {
        DXSetError(ERROR_MISSING_DATA, "#10252", "input", "data");
	return ERROR;
    }


    out[0] = DXCopy(in[0], COPY_STRUCTURE);
    if (!out[0])
	return ERROR;


    /* special case unmarking the 'data' component - ignore the existing
     *  'data' component and overwrite it with the 'saved data' component.
     *  if no saved data, just leave the data component alone.
     */
    if (!strcmp(target, "data")) {
        if (!DXExists(out[0], "saved data")) {
            DXWarning("#10250", "input", "`saved data'");
            return OK;
        }

        if (!DXRename(out[0], "saved data", "data")) {
	    DXAddMessage("while trying to create output field");
	    goto error;
	}

        return OK;
    }

     
    /* normal case.  put data back to its original name, and then check for
     *  saved data and put it back to data.
     */
    if (!DXRename(out[0], "data", target)) {
	DXAddMessage("while trying to create output field");
	goto error;
    }


    /* if 'saved data' exists, move it back into 'data'
     */
    if (DXExists(out[0], "saved data") &&
	!DXRename(out[0], "saved data", "data")) {
	    DXAddMessage("while trying to create output field");
	    goto error;
	}
    
    if (DXGetAttribute(out[0], "marked component"))
	DXSetAttribute(out[0], "marked component", NULL);

    return OK;

  error:
    DXDelete(out[0]);
    out[0] = NULL;
    return ERROR;
}
Exemplo n.º 7
0
Error DXAddLikeTasks (PFE func, Pointer arg, int size, double work, int repeat)
{
    EXTaskGroup	tg	= NULL;
    int		s;
    EXTask	t;
    Pointer	a;
    int 	locked	= FALSE;

    if (repeat <= 0)
    {
	DXSetError (ERROR_INTERNAL, "#8330");
	goto error;
    }

    if (EMPTY)
    {
	if (runningTG)
	{
	    tg = runningTG;
	    locked = TRUE;
	    DXlock (&tg->lock, exJID);
	}
	else
	{
	    DXSetError (ERROR_INTERNAL, "#8340");
	    goto error;
	}
	t = (EXTask) DXAllocateZero (sizeof (_EXTask));
	if (! t)
	    goto error;
	t->exdelete = TRUE;
    }
    else
    {
	tg = _tasks;
	locked = FALSE;
	/*
	 * Extend the task group by adding blocks if necessary
	 */
	if (tg->nalloc == tg->nused)
	{
	    tg->nalloc <<= 1;
	    s = tg->nalloc * sizeof (_EXTask);

	    t = (EXTask) DXReAllocate ((Pointer) tg->tasks, s);
	    if (! t)
		goto error;
	    tg->tasks = t;
	}
	t = tg->tasks + tg->nused++;
	t->exdelete = FALSE;
    }
    

    /*
     * Remember the relevant information about the task
     */
    t->tg   = tg;
    t->work = work;
    t->func = func;
    t->repeat = repeat;

    /*
     * If the argument data fits locally then copy it here, otherwise
     * allocate some space and put it there.
     */
    if (size == 0)
    {
	t->arg = arg;
	t->nocopy = TRUE;
    }
    else if (size <= EX_TASK_DATA)
    {
	ExCopy (t->data, arg, size);
	t->nocopy = FALSE;
	t->arg = NULL;
    }
    else
    {
	a = DXAllocate (size);
	if (! a)
	    goto error;
	ExCopy (a, arg, size);
	t->arg = a;
	t->nocopy = FALSE;
    }

    if (locked)
    {
	tg->ntodo += repeat;
	DXunlock (&tg->lock, exJID);
        /* copy global context data to ExTask structure */
#if 0
        t->taskContext = _dxd_exContext;
#endif
        _dxfCopyContext(&(t->taskContext), _dxd_exContext);
	_dxf_ExRQEnqueue (ExProcessTask, (Pointer)t, repeat, 
			  (long) tg, 0, FALSE);
    }
    else
    {
	if (tg->nused == 1 || work < tg->minwork)
	    tg->minwork = work;
	if (tg->nused == 1 || work > tg->maxwork)
	    tg->maxwork = work;
    }

    return (OK);

error:
    if (locked && tg != NULL)
	DXunlock (&tg->lock, exJID);
    return (ERROR);
}
Exemplo n.º 8
0
static Error ExProcessTaskGroup (int sync)
{
    Error               ret	= ERROR;
    EXTaskGroup		tg;
    EXTask		task;
    int			i, j;
    int			todo;
#if 0
    volatile int	*count;		/* task group counter		*/
#endif
    int			totalTodo;
#define NUM_TASKS_ALLOCED 256
    Pointer		_args[NUM_TASKS_ALLOCED];
    PFI			_funcs[NUM_TASKS_ALLOCED];
    int			_repeats[NUM_TASKS_ALLOCED];
    Pointer		*args	= _args;
    PFI			*funcs	= _funcs;
    int			*repeats = _repeats;
    int			status;
    WorkIndex 		_ilist[NUM_TASKS_ALLOCED];
    WorkIndex 		*ilist	= _ilist;
    ErrorCode		ecode;
    char		*emsg;
    EXTask		myTask	= NULL;
    int			myIter	= 0;
    
    if (EMPTY)
	return (OK);
    
    POP (tg);
    if (tg->nused == 0)
    {
	ExDestroyTaskGroup (tg);
	return (OK);
    }

    DXMarkTime ("start parallel");
    /*
     * Remember whether or not this is a syncronous task group.
     */

    ecode = DXGetError ();
    emsg  = DXGetErrorMessage ();

    if (ecode != ERROR_NONE || *emsg != '\0')
    {
	if (ecode != ERROR_NONE)
	    DXWarning ("#4840");
	else
	    DXWarning ("#4850");
	
	tg->error = ecode;
	tg->emsg  = _dxf_ExCopyString (emsg);
    }

    tg->sync  = sync;
    todo = tg->nused;

    status = get_status ();

    /*
     * Only bother to sort if the tasks actually have different cost
     * estimates associated with them.
     */
    if (todo > NUM_TASKS_ALLOCED)
    {
	ilist = (WorkIndex *) DXAllocateLocal (todo * sizeof (WorkIndex));
	if (ilist == NULL)
	    goto error;
    }
    task = tg->tasks;
    for (i = 0; i < todo; ++i)
    {
	ilist[i].task = task + i;
	ilist[i].work = task[i].work;
        _dxfCopyContext(&(task[i].taskContext), _dxd_exContext);
    }

    if (tg->minwork != tg->maxwork)
	QUICKSORT (ilist, todo);
#ifdef TASK_TIME
    DXMarkTimeLocal ("finish sort");
#endif

    /*
     * Schedule/Execute the tasks appropriately.
     */
    if (todo > NUM_TASKS_ALLOCED) 
    {
	funcs   = (PFI     *) DXAllocateLocal (todo * sizeof (PFI    ));
	args    = (Pointer *) DXAllocateLocal (todo * sizeof (Pointer));
	repeats = (int     *) DXAllocateLocal (todo * sizeof (int    ));
	if (funcs == NULL || args == NULL || repeats == NULL)
	    goto error;
    }

    /* Save a task for the executer to execute */
    i = 0;
    if (sync)
    {
	myTask = ilist[i].task;
	myIter = ilist[i].task->repeat - 1;
	ilist[i].task->repeat--;
	if (ilist[i].task->repeat == 0) 
	{
	    i = 1;
	}
    }
	
    totalTodo = 1;
    for (j = 0; i < todo; j++, i++)
    {
	funcs[j] = ExProcessTask;
	args[j] = (Pointer) ilist[i].task;
	totalTodo += (repeats[j] = ilist[i].task->repeat);
    }
    tg->ntodo = totalTodo;
    if (ilist[0].task->repeat == 0)
    {
	--todo;
    }


#ifdef TASK_TIME
    DXMarkTimeLocal ("queue all tasks");
#endif
    _dxf_ExRQEnqueueMany (todo, funcs, args, repeats, (long) tg, 0, FALSE);
#ifdef TASK_TIME
    DXMarkTimeLocal ("queued all tasks");
#endif

    if (funcs != _funcs)
	DXFree ((Pointer)funcs);
    if (args != _args)
	DXFree ((Pointer)args);
    if (repeats != _repeats)
	DXFree ((Pointer)repeats);
    if (ilist != _ilist)
	DXFree ((Pointer)ilist);

    if (! sync)
    {
	ret = OK;
    }
    else 
    {
        int knt;

	/*
	 * This processor is now restricted to processing tasks in this
	 * task group.  Once it can no longer get a job in this task group
	 * from the run queue then just spin and wait for all of the outstanding
	 * tasks in the group to complete.
	 */

#ifdef TASK_TIME
	DXMarkTimeLocal ("tasks enqueued");
#endif
	/* Do the task that I saved above as myTask */
	if (myTask != NULL)
	    ExProcessTask (myTask, myIter);

#if 0
before the changes made to fix bugs found when debugging
SMP linux -- gda

	count = &tg->ntodo;
	while (*count > 0)
	{
	    if (! _dxf_ExRQDequeue ((long) tg))
		break;
	}

	DXMarkTimeLocal ("waiting");

	set_status (PS_JOINWAIT);

	/* Every 100 times of checking count, try to see if anyone added
	 * on to the queue.
	 */
	while (*count > 0)
	{
	    _dxf_ExRQDequeue ((long)tg);
	    for (i = 0; *count && i < 100; ++i)
		;
	}

#else

        do
        {
            DXlock(&tg->lock, 0);
            knt = tg->ntodo;
            DXunlock(&tg->lock, 0);

            _dxf_ExRQDequeue ((long) tg);
        } while(knt);

#endif

	DXMarkTimeLocal ("joining");

	set_status (status);

	ret = (tg->error == ERROR_NONE) ? OK : ERROR;
	if (ret != OK)
	    DXSetError (tg->error, tg->emsg? tg->emsg: "#8360");

	ExDestroyTaskGroup (tg);
    }

    DXMarkTime ("end parallel");
    return (ret);

error:
    if (funcs != _funcs)
	DXFree ((Pointer) funcs);
    if (args != _args)
	DXFree ((Pointer) args);
    if (repeats != _repeats)
	DXFree ((Pointer) repeats);
    if (ilist != _ilist)
	DXFree ((Pointer) ilist);
    return (ret);
}
Exemplo n.º 9
0
Error m_SXBin( Object *in, Object *out ){
/*
*+
*  Name:
*     SXBin

*  Purpose:
*     bins a field into a grid defined by a another field

*  Language:
*     ANSI C

*  Syntax:
*     output = SXBin( input, grid, type );

*  Classification:
*     Realization

*  Description:
*     The SXBin module bins the "data" component of the "input" field into
*     the bins defined by the "connections" component of the "grid" field.
*     The input field can hold scattered or regularly gridded points, but
*     the "data" component must depend on "positions". The "grid" field must
*     contain "connections" and "positions" components but need not contain
*     a "data" component. The input"data" component must be either TYPE_FLOAT
*     or TYPE_DOUBLE.
*
*     The "data" component in the "output" field contains either the mean
*     or sum of the "input" data values falling within each connection, or
*     the number of data values falling within each connection, as specified
*     by "type".
*
*     When binning a regular grid into another regular grid, beware of the
*     tendancy to produce artificial large scale structure representing the
*     "beat frequency" of the two grids.

*  Parameters:
*     input = field (Given)
*        field or group with positions to bin [none]
*     grid = field (Given)
*        grid to define the bins [none]
*     type = integer (Given)
*        type of output values required: 0 - mean, 1 - sum,
*                                        2 - count [0]
*     output = field (Returned)
*        bined field

*  Components:
*     All components except the "data" component are copied from the "grid"
*     field. The output "data" component added by this module depends on
*     "connections". An "invalid connections" component is added if any output
*     data values could not be calculated (e.g. if the mean is required of an
*     empty bin).

*  Examples:
*     This example bins the scattered data described in "CO2.general" onto a
*     regular grid, and displays it. SXBin is used to find the mean data
*     value in each grid connection.
*
*        input = Import("/usr/lpp/dx/samples/data/CO2.general")$
*        frame17 = Select(input,17);
*        camera = AutoCamera(frame17);
*        grid = Construct([-100,-170],deltas=[10,10],counts=[19,34]);
*        bin = SXBin(frame17,grid);
*        coloured = AutoColor(bin);
*        Display(coloured,camera);
*
*     This example produces a grid containing an estimate of the density of
*     the scattered points (i.e. the number of points per unit area). The
*     positions of the original scattered points are shown as dim grey
*     circles. SXBin finds the number of input positions in each bin,
*     Measure finds the area of each bin, and Compute divides the counts
*     by the areas to get the densities:
*
*        input = Import("/usr/lpp/dx/samples/data/CO2.general")$
*        frame17 = Select(input,17);
*        camera = AutoCamera(frame17);
*        glyphs = AutoGlyph(frame17,scale=0.1,ratio=1);
*        glyphs = Color(glyphs,"dim grey");
*        grid = Construct([-100,-170],deltas=[40,40],counts=[6,10]);
*        counts = SXBin(frame17,grid,type=2);
*        areas = Measure(counts,"element");
*        density = Compute("$0/$1",counts,areas);
*        coloured = AutoColor(density);
*        collected=Collect(coloured,glyphs);
*        Display(collected,camera);

*  See Also:
*     SXRegrid, Map, Construct, Measure

*  Returned Value:
*     OK, unless an error occurs in which case ERROR is returned and the
*     DX error code is set.

*  Copyright:
*     Copyright (C) 1995 Central Laboratory of the Research Councils.
*     All Rights Reserved.

*  Licence:
*     This program is free software; you can redistribute it and/or
*     modify it under the terms of the GNU General Public License as
*     published by the Free Software Foundation; either version 2 of
*     the License, or (at your option) any later version.
*
*     This program 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 General Public License for more details.
*
*     You should have received a copy of the GNU General Public License
*     along with this program; if not, write to the Free Software
*     Foundation, Inc., 51 Franklin Street,Fifth Floor, Boston, MA
*     02110-1301, USA

*  Authors:
*     DSB: David Berry (STARLINK)
*     {enter_new_authors_here}

*  History:
*     9-OCT-1995 (DSB):
*        Original version
*     {enter_further_changes_here}

*  Bugs:
*     {note_any_bugs_here}

*-
*/


/*  Local Variables: */

      Array    a;            /* Array to hold reduced dimension positions */
      float   *a_ptr;        /* Pointer to reduced dimension positions */
      Category cat;          /* Array category type */
      Type     dtype;        /* Type of current input data array */
      int      fld;          /* Field counter */
      Object   grid;         /* The grid object */
      int      i;            /* Loop count */
      void    *indata[MAXFLD];/* Pointer to input data array */
      float   *inpos;        /* Pointer to input positions array */
      Array    inpos_array;  /* Input positions array */
      Object   input;        /* A copy of the input object */
      Interpolator interp;   /* Interpolator for grid */
      int      j;            /* Loop count */
      Array    map;          /* Map from input position to output bin number */
      int     *map_ptr;      /* Pointer to map */
      char     more;         /* Are there more input fields to do? */
      Fpair   *next;         /* The next Fpair structure in the linked list */
      int      ndim;         /* No. of dimensions in grid positions array */
      int      nfld;         /* No. of fields sharing current positions array */
      int      npos;         /* No. of input positions */
      int      npindim;      /* No. of dimensions in input positions array */
      int      nbin;         /* No. of grid positions */
      int      outbad[MAXFLD];/* No. of invalid output positions in each field*/
      void    *outdata[MAXFLD];/* Pointers to output data arrays */
      Array    outdata_array;/* Output data array */
      Object   output;       /* The output object */
      int      outtype;      /* Type of output values required */
      float   *pa;           /* Pointer to next reduced dimension position */
      float   *pin;          /* Pointer to next full dimension position */
      int      rank;         /* Array rank */
      int      tag;          /* The tag for the current input positions array */
      Type     type;         /* Array numeric type */
      int      veclen[MAXFLD];/* Dimensionality of each input data array */
      int     *work;         /* Pointer to work array */


/*  Initialise all created objects so that they can safely be deleted if
 *  an error occurs. */

      input = NULL;
      output = NULL;
      grid = NULL;
      outdata_array = NULL;
      work = NULL;
      a = NULL;


/*  Check that the "input" object has been supplied. */

      if( !in[0] ) {
         DXSetError( ERROR_BAD_PARAMETER, "missing parameter \"input\"." );
         goto error;
      }


/*  Remove (cull) all invalid positions and connections from the input. It is
 *  necessary to take a copy of the input first, because the input object
 *  itself cannot be modified. */

      input = DXCopy( in[0], COPY_STRUCTURE );
      if( !DXCull( input ) ) goto error;


/*  Check that the "grid" object has been supplied. */

      if( !in[1] ) {
         DXSetError( ERROR_BAD_PARAMETER, "missing parameter \"grid\"." );
         goto error;
      }


/*  Create an interpolator which identifies the grid connection containing any
 *  given position. */

      interp = SXGetIntp( in[1], &nbin, &ndim, &grid );
      if( !interp ) goto error;


/*  Allocate a work array for use by SXBinD or SXBinF. */

      work = (int *) DXAllocate( sizeof( int )*nbin );
      if( !work ) goto error;


/*  Get the type of output value required. */

      if( !in[2] ){
         outtype = 0;
      } else {
         if( !SXGet0is( "type", in[2], 2, 0, 0, NULL, &outtype, NULL ) ) goto error;
      }


/*  Produce a copy of the "input" object to use as the output, replacing all
 *  fields within it with the grid field. Also form a linked list of Fpair
 *  structures describing the fields. */

      output = SXMakeOut( input, (Field) grid, 1, 1, 3, "positions" );
      if( !output ) goto error;


/*  Abort if no fields were found. */

      if( !head ) {
         DXSetError( ERROR_DATA_INVALID, "no fields found in \"input\"." );
         goto error;
      }


/*  Go through the list of fields looking for fields which share the same
 *  positions component. */

      more = 1;
      while( more ){


/*  Find the first field with a non-zero positions tag. */

         next = head;
         while( next && !next->postag ) next = next->next;


/*  If no non-zero positions tags were found, we've finished. */

         if( !next ){
            more = 0;
            break;
         }


/*  Find the input positions array. Get its shape, size and type. Check it is
 *  usable. */

         inpos_array = (Array) next->pos;
         if( !DXGetArrayInfo( inpos_array, &npos, &type, &cat, &rank, &npindim ) ) goto error;

         if( type != TYPE_FLOAT ){
            DXSetError( ERROR_DATA_INVALID, "positions component in \"input\" is not of type FLOAT." );
            goto error;
         }

         if( cat != CATEGORY_REAL ){
            DXSetError( ERROR_DATA_INVALID, "positions component in \"input\" is not of category REAL." );
            goto error;
         }

         if( rank > 1 ){
            DXSetError( ERROR_DATA_INVALID, "rank %d positions component found in \"input\".", rank );
            goto error;
         }

         if( rank == 0 ){   /* Scalar data is equivalent to 1-d vector data */
            rank = 1;
            npindim = 1;
         }

         if( npindim < ndim ){
            DXSetError( ERROR_DATA_INVALID, "dimensionality of \"input\" (%d) is less than \"grid\" (%d).", npindim, ndim );
            goto error;
         }


/*  Get a pointer to the positions values. */

         inpos = (float *) DXGetArrayData( inpos_array );


/*  If the number of dimensions in the input positions is greater than the
 *  number of dimensions in the grid, remove trailing dimensions from the
 *  input positions so that they match the dimensionality of the grid. */

         if( npindim > ndim ){
            a = DXNewArrayV( TYPE_FLOAT, CATEGORY_REAL, 1, &ndim );
            if( !DXAddArrayData( a, 0, npos, NULL ) ) goto error;
            a_ptr = (float *) DXGetArrayData( a );

            for( i=0; i<npos; i++ ){
               pin = inpos + i*npindim;
               pa = a_ptr + i*ndim;
               for(j=0;j<ndim;j++) pa[j] = pin[j];
            }

            inpos_array = a;

         } else {
            a = NULL;
         }

/*  Create an array of the same shape and size as the input positions
 *  array, which holds integer identifiers for the grid connections
 *  containing each input position. These identifiers start at 1 and
 *  go upto nbin. Positions returned holding an identifier of zero do
 *  not fall within the supplied grid. */

         map = (Array) DXMap( (Object) inpos_array, (Object) interp,
                              NULL, NULL );
         map_ptr = (int *) DXGetArrayData( map );


/*  Find all fields which have the same positions tag and the same data
 *  type. */

         tag = next->postag;
         dtype = next->datatype;

         nfld = 0;
         while( next ){

            if( next->postag == tag && next->datatype == dtype ){


/*  Increment the number of fields found so far which share this
 *  positions component. */

               nfld++;

               if( nfld > MAXFLD ){
                  DXSetError( ERROR_MAX, "\"input\" has too many fields.", MAXFLD );
                  goto error;
               }


/*  Store a pointer to the input data array, and its dimensionality. */

              indata[nfld-1] = (void *) DXGetArrayData( (Array) next->data );
              veclen[nfld-1] = next->datalen;


/*  Make a new array to hold the output data values. The output data will
 *  have the same dimensionality as the input data unless the required output
 *  data is "counts (i.e if parameter "type" is 2), in which case the
 *  output data will be scalar. */

              if( outtype == 2 ) veclen[nfld-1] = 1;

              outdata_array = DXNewArrayV( dtype, CATEGORY_REAL, 1, &veclen[nfld-1] );
              if( !outdata_array ) goto error;

              if( !DXAddArrayData( outdata_array, 0, nbin, NULL ) ) goto error;


/*  Get a pointer to the output data array. */

              outdata[nfld-1] = (void *) DXGetArrayData( outdata_array );
              if( !outdata[nfld-1] ) goto error;


/*  Place the new data component in the output field, and indicate that
 *  it now does not need to be deleted explicitly in the event of an error. */

              if( !DXSetComponentValue( next->outfld, "data", (Object) outdata_array ) ) goto error;
              outdata_array = NULL;

            }

            next = next->next;

         }


/*  Now bin the input data arrays into the output connections, storing the
 *  resulting bin values in the output data arrays. */

         if( dtype == TYPE_FLOAT ){
            if( ! SXBinF( nfld, veclen, npos, (float **)indata, nbin,
                          (float **) outdata, map_ptr, work, outtype,
                          outbad ) ) goto error;
         } else {
            if( ! SXBinD( nfld, veclen, npos, (double **)indata, nbin,
                          (double **) outdata, map_ptr, work, outtype,
                          outbad ) ) goto error;
         }


/*  Loop round all the fields that have just been created. */

         next = head;
         fld = 0;
         while( next ){
            if( next->postag == tag ){


/*  Create invalid positions components in each output field which have any
 *  undefined data values */

               if( outbad[fld] ){
                  if( dtype == TYPE_FLOAT ){
                     if( !SXSetInvPosF( (Object) next->outfld, nbin, veclen[fld],
                                        (float *) outdata[fld], "connections" ) ) goto error;
                  } else {
                     if( !SXSetInvPosD( (Object) next->outfld, nbin, veclen[fld],
                                        (double *) outdata[fld], "connections" ) ) goto error;
                  }
               }


/*  Indicate that the data values are dependant on connections. */

               if( !DXSetComponentAttribute( next->outfld, "data", "dep",
                                        (Object) DXNewString("connections")) ) goto error;


/*  Indicate that the data component of the output field has been
 *  changed. */

               DXChangedComponentValues( next->outfld, "data" );


/*  Complete the construction of this output field. */

               DXEndField( next->outfld );


/*  Increment the field index, and indicate that this input field has
 *  been done. */

               fld++;
               next->postag = 0;

            }

            next = next->next;

         }


/*  Delete the array used to store the reduced dimensionality input positions
 *  (if used). */

         if( a ) {
            DXDelete( (Object) a );
            a = NULL;
         }


      }

error:

/*  Free the storage used to hold the link list of Fpair structures
 *  describing the fields in the "input" object. */

      while( head ){
         next = head->next;
         DXFree( (Pointer) head );
         head = next;
      }


/*  Free the work array. */

      if( work ) DXFree( (Pointer) work );


/*  Delete the copy of the input and grid objects, and the array used to
 *  store the reduced dimensionality input positions (if used). */

      DXDelete( grid );
      DXDelete( input );
      if( a ) DXDelete( (Object) a );


/*  If all is OK, return the "output" object with a good status. */

      if( DXGetError() == ERROR_NONE ){
         out[0] = output;
         return( OK );


/*  If an error has occurred, ensure temporary objects are deleted and return
 *  with a bad status. */

      } else {
         DXDelete( (Object) outdata_array );
         DXDelete( output );
         return( ERROR );
      }

}
Exemplo n.º 10
0
Error
m_CacheScene(Object *in, Object *out)
{
    char *tag;
    char *buf = NULL;

    if (! in[0])
    {
	DXSetError(ERROR_MISSING_DATA, "cache tag");
	goto error;
    }

    if (! in[1])
    {
	DXSetError(ERROR_MISSING_DATA, "cache object");
	goto error;
    }

    if (! in[2])
    {
	DXSetError(ERROR_MISSING_DATA, "cache camera");
	goto error;
    }

    if (! DXExtractString(in[0], &tag))
    {
	DXSetError(ERROR_MISSING_DATA, "cache tag must be STRING");
	goto error;
    }

    buf = (char *)DXAllocate(strlen(tag) + strlen(".object") + 1);
    if (! buf)
	goto error;
    
    sprintf(buf, "%s.object", tag);
    if (! DXSetCacheEntry(in[1], CACHE_PERMANENT, buf, 0, 0))
	goto error;
    
#if 0
    /* I believe this is left over from when we were using Get with */
    /* a key. */
    DXReadyToRunNoExecute(tag);
#endif

    DXFree((Pointer)buf);

    buf = (char *)DXAllocate(strlen(tag) + strlen(".camera") + 1);
    if (! buf)
	goto error;
    
    sprintf(buf, "%s.camera", tag);
    if (! DXSetCacheEntry(in[2], CACHE_PERMANENT, buf, 0, 0))
	goto error;

#if 0
    /* I believe this is left over from when we were using Get with */
    /* a key. */
    DXReadyToRunNoExecute(tag);
#endif

    DXFree((Pointer)buf);

    return OK;

error:
    DXFree((Pointer)buf);
    return ERROR;
}
Exemplo n.º 11
0
static Error
traverse(Object *in, Object *out)
{
    switch(DXGetObjectClass(in[0]))
    {
    case CLASS_FIELD:
    case CLASS_ARRAY:
        /*
         * If we have made it to the leaf level, call the leaf handler.
         */
        if (! doLeaf(in, out))
            return ERROR;

        return OK;

    case CLASS_GROUP:
    {
        int   i, j;
        int   memknt;
        Class groupClass  = DXGetGroupClass((Group)in[0]);

        DXGetMemberCount((Group)in[0], &memknt);


        /*
         * Create new in and out lists for each child
         * of the first input.
         */
        for (i = 0; i < memknt; i++)
        {
            Object new_in[2], new_out[1];

            /*
             * For all inputs that are Values, pass them to
             * child object list.  For all that are Field/Group, get
             * the appropriate decendent and place it into the
             * child input object list.
             */

            /* input "input" is Field/Group */
            if (in[0])
                new_in[0] = DXGetEnumeratedMember((Group)in[0], i, NULL);
            else
                new_in[0] = NULL;

            /* input "size" is Value */
            new_in[1] = in[1];

            /*
             * For all outputs that are Values, pass them to
             * child object list.  For all that are Field/Group,  get
             * the appropriate decendent and place it into the
             * child output object list.  Note that none should
             * be NULL (unlike inputs, which can default).
             */

            /* output "output" is Field/Group */
            new_out[0] = DXGetEnumeratedMember((Group)out[0], i, NULL);

            if (! traverse(new_in, new_out))
                return ERROR;

            /*
             * Now for each output that is not a Value, replace
             * the updated child into the object in the parent.
             */

            /* output "output" is Field/Group */
            DXSetEnumeratedMember((Group)out[0], i, new_out[0]);

        }
        return OK;
    }

    case CLASS_XFORM:
    {
        int    i, j;
        Object new_in[2], new_out[1];


        /*
         * Create new in and out lists for the decendent of the
         * first input.  For inputs and outputs that are Values
         * copy them into the new in and out lists.  Otherwise
         * get the corresponding decendents.
         */

        /* input "input" is Field/Group */
        if (in[0])
            DXGetXformInfo((Xform)in[0], &new_in[0], NULL);
        else
            new_in[0] = NULL;

        /* input "size" is Value */
        new_in[1] = in[1];

        /*
         * For all outputs that are Values, copy them to
         * child object list.  For all that are Field/Group,  get
         * the appropriate decendent and place it into the
         * child output object list.  Note that none should
         * be NULL (unlike inputs, which can default).
         */

        /* output "output" is Field/Group */
        DXGetXformInfo((Xform)out[0], &new_out[0], NULL);

        if (! traverse(new_in, new_out))
            return ERROR;

        /*
         * Now for each output that is not a Value replace
         * the updated child into the object in the parent.
         */

        /* output "output" is Field/Group */
        DXSetXformObject((Xform)out[0], new_out[0]);

        return OK;
    }

    case CLASS_SCREEN:
    {
        int    i, j;
        Object new_in[2], new_out[1];


        /*
         * Create new in and out lists for the decendent of the
         * first input.  For inputs and outputs that are Values
         * copy them into the new in and out lists.  Otherwise
         * get the corresponding decendents.
         */

        /* input "input" is Field/Group */
        if (in[0])
            DXGetScreenInfo((Screen)in[0], &new_in[0], NULL, NULL);
        else
            new_in[0] = NULL;

        /* input "size" is Value */
        new_in[1] = in[1];


        /*
         * For all outputs that are Values, copy them to
         * child object list.  For all that are Field/Group,  get
         * the appropriate decendent and place it into the
         * child output object list.  Note that none should
         * be NULL (unlike inputs, which can default).
         */

        /* output "output" is Field/Group */
        DXGetScreenInfo((Screen)out[0], &new_out[0], NULL, NULL);

        if (! traverse(new_in, new_out))
            return ERROR;

        /*
         * Now for each output that is not a Value, replace
         * the updated child into the object in the parent.
         */

        /* output "output" is Field/Group */
        DXSetScreenObject((Screen)out[0], new_out[0]);

        return OK;
    }

    case CLASS_CLIPPED:
    {
        int    i, j;
        Object new_in[2], new_out[1];


        /* input "input" is Field/Group */
        if (in[0])
            DXGetClippedInfo((Clipped)in[0], &new_in[0], NULL);
        else
            new_in[0] = NULL;

        /* input "size" is Value */
        new_in[1] = in[1];


        /*
         * For all outputs that are Values, copy them to
         * child object list.  For all that are Field/Group,  get
         * the appropriate decendent and place it into the
         * child output object list.  Note that none should
         * be NULL (unlike inputs, which can default).
         */

        /* output "output" is Field/Group */
        DXGetClippedInfo((Clipped)out[0], &new_out[0], NULL);

        if (! traverse(new_in, new_out))
            return ERROR;

        /*
         * Now for each output that is not a Value, replace
         * the updated child into the object in the parent.
         */

        /* output "output" is Field/Group */
        DXSetClippedObjects((Clipped)out[0], new_out[0], NULL);

        return OK;
    }

    default:
    {
        DXSetError(ERROR_BAD_CLASS, "encountered in object traversal");
        return ERROR;
    }
    }
}
Exemplo n.º 12
0
static int
doLeaf(Object *in, Object *out)
{
    int i, result=0;
    Array array;
    Field field;
    Pointer *in_data[2], *out_data[1];
    int in_knt[2], out_knt[1];
    Type type;
    Category category;
    int rank, shape;
    Object attr, src_dependency_attr = NULL;
    char *src_dependency = NULL;
    /*
     * Irregular positions info
     */
    int p_knt, p_dim;
    float *p_positions;
    int c_knt = -1;

    /* User-added declarations */
    float *scratch, *in_ptr, size;
    Point inpoint, *out_pos_ptr;
    ArrayHandle handle;
    Array connections;
    Line *conn_ptr;

    /*
     * positions and/or connections are required, so the first must
     * be a field.
     */
    if (DXGetObjectClass(in[0]) != CLASS_FIELD)
    {
        DXSetError(ERROR_DATA_INVALID,
                   "positions and/or connections unavailable in array object");
        goto error;
    }
    else
    {

        field = (Field)in[0];

        if (DXEmptyField(field))
            return OK;

        /*
         * Determine the dependency of the source object's data
         * component.
         */
        src_dependency_attr = DXGetComponentAttribute(field, "data", "dep");
        if (! src_dependency_attr)
        {
            DXSetError(ERROR_MISSING_DATA, "\"input\" data component is missing a dependency attribute");
            goto error;
        }

        if (DXGetObjectClass(src_dependency_attr) != CLASS_STRING)
        {
            DXSetError(ERROR_BAD_CLASS, "\"input\" dependency attribute");
            goto error;
        }

        src_dependency = DXGetString((String)src_dependency_attr);

        array = (Array)DXGetComponentValue(field, "positions");
        if (! array)
        {
            DXSetError(ERROR_BAD_CLASS, "\"input\" contains no positions component");
            goto error;
        }

        /* change to doLeaf so that regular positions are not expanded */

        if (!(handle = DXCreateArrayHandle(array)))
            goto error;

        scratch = DXAllocate(3*sizeof(float));
        if (!scratch)
            goto error;

        DXGetArrayInfo(array, &p_knt, NULL, NULL, NULL, &p_dim);


    }

    /* New User code starts here */

    /* Make the new positions array for the output */
    array = DXNewArray(TYPE_FLOAT, CATEGORY_REAL, 1, 3);
    if (! array)
        goto error;


    /* Check that the positions are three dimensional: */
    if (p_dim != 3) {
        DXSetError(ERROR_DATA_INVALID,"input positions must be 3-dimensional");
        goto error;
    }
    /* Allocate space in the new positions array */
    if (! DXAddArrayData(array, 0, 4*p_knt, NULL))
        goto error;

    /* Get a pointer to the output positions */
    out_pos_ptr  = (Point *)DXGetArrayData(array);


    /* Make a connections component for the output */
    connections = DXNewArray(TYPE_INT, CATEGORY_REAL, 1, 2);

    /* Allocate space in the new connections array */
    if (! DXAddArrayData(connections, 0, 2*p_knt, NULL))
        goto error;
    DXSetAttribute((Object)connections, "element type",
                   (Object)DXNewString("lines"));
    /* Get a pointer to the new connections */
    conn_ptr = (Line *)DXGetArrayData(connections);

    /* Now "draw" the x's */
    for (i=0; i< p_knt; i++) {
        /* the following line accesses the position via the
         * array handling routines
         */
        in_ptr = (float *)DXIterateArray(handle, i, in_ptr, scratch);
        inpoint = DXPt(in_ptr[0], in_ptr[1], in_ptr[2]);
        DXExtractFloat(in[1], &size);
        out_pos_ptr[4*i]   = DXPt(inpoint.x - size, inpoint.y, inpoint.z);
        out_pos_ptr[4*i+1] = DXPt(inpoint.x + size, inpoint.y, inpoint.z);
        out_pos_ptr[4*i+2] = DXPt(inpoint.x, inpoint.y - size, inpoint.z);
        out_pos_ptr[4*i+3] = DXPt(inpoint.x, inpoint.y + size, inpoint.z);

        conn_ptr[2*i] = DXLn(4*i, 4*i+1);
        conn_ptr[2*i+1] = DXLn(4*i+2, 4*i+3);
    }

    /* Clean up; we're about to significantly modify the positions and connections
     */
    DXChangedComponentStructure((Field)out[0],"positions");
    DXChangedComponentStructure((Field)out[0],"connections");

    /* Now place the new positions and connections in the output field */
    DXSetComponentValue((Field)out[0], "positions", (Object)array);
    DXSetComponentValue((Field)out[0], "connections", (Object)connections);

    /* Finalize the field */
    DXEndField((Field)out[0]);

    /* Delete scratch and handle */
    DXFree((Pointer)scratch);
    DXFreeArrayHandle(handle);

    /* return */
    return OK;
error:

    /* Delete scratch and handle */
    DXFree((Pointer)scratch);
    DXFreeArrayHandle(handle);
    return ERROR;


}
Exemplo n.º 13
0
Error DXCallOutboard (PFE m, int dxfd)
{
    static int  firsttime = 1;
    Array	oarr;
    int		nin	= 0;
    int		nout	= 0;
    Object	*ilist = NULL;
    Object	*olist = NULL;
    Error	ret    = ERROR;
    Error	modret;
    ErrorCode	ecode;
    char        *emessptr = NULL;
    Group	iobj	= NULL;
    Group	oobj	= NULL;
    Array	code	= NULL;
    String	mess	= NULL;
    int		i;
    int		*iptr;
    int		count	= 0;
    int		one = 1;
    int         zero = 0;


    if (firsttime && ! callsetup (dxfd)) {
	host_status = HOST_CLOSED;
	return ERROR;
    }

	
    /*
     * Import the remote object, extract the number of inputs and outputs,
     * and rip them apart appropriately.  group members are: 
     * input parm count, 
     * input object list (the pointers values don't mean anything in this
     * address space; the interesting part is whether they are NULL or not),
     * the output parm count,
     * and then each input object which isn't null.
     */

    iobj = (Group) _dxfImportBin_FP(dxfd);
    if(iobj == NULL)
        goto finish_up;

    if (!DXExtractInteger (DXGetEnumeratedMember (iobj, 0, NULL), &nin))
	goto finish_up;

    ilist = (Object *) DXAllocateZero(sizeof (Object) * nin);
    if (!ilist)
	goto finish_up;
    
    iptr = (int *)DXGetArrayData((Array)DXGetEnumeratedMember (iobj, 1, NULL));

    if (!DXExtractInteger (DXGetEnumeratedMember (iobj, 2, NULL), &nout))
	goto finish_up;

    count = 3;
    for (i=0; i<nin; i++) 
    {
	if (iptr[i] == (int)NULL)
	    continue;

	ilist[i] = DXGetEnumeratedMember(iobj, count++, NULL);
    }

    olist = (Object *) DXAllocateZero(sizeof (Object) * nout);
    if (!olist)
	goto finish_up;

    /*
     * Call the module, and save the error code if set.
     */

    DXResetError();
    
    _dxd_exOutboard = TRUE;
    modret = m (ilist, olist);
    _dxd_exOutboard = FALSE;

    /*
     * get these now, before we do something else which overwrites them.
     */
    ecode = DXGetError ();
    emessptr = DXGetErrorMessage();

    /* 
     * now BEFORE we do anything which allocates memory or new objects
     * check the return objects for validity.  we saw a case where the
     * object being returned was deleted, and then the DXNewGroup() 
     * below got the exact same address allocated, so when we put the
     * group together we put a reference to the parent group into the
     * same group as a child.  bad things followed...
     *
     * (the two calls above to geterror & geterrormsg don't allocate anything;
     * they return a value & ptr to a static respectively)
     */
    for (i = 0; i < nout; i++) {
	if (olist[i] == NULL)
	    continue;

	switch (DXGetObjectClass(olist[i])) {
	  case CLASS_DELETED:
	  case CLASS_MIN:
	  case CLASS_MAX:
	    if (ecode == ERROR_NONE) {
		DXSetError(ERROR_BAD_CLASS, "bad object returned as output %d from outboard module", i);
		ecode = DXGetError ();
		emessptr = DXGetErrorMessage();
	    } else
		DXAddMessage("bad object returned as output %d from outboard module", i);

	    olist[i] = NULL;
	  default: /* Lots of other classes */
	    break;
	}
    }

    /*
     * Set up for return, at least the return code and message.
     */
    
    oobj = DXNewGroup ();
    if (oobj == NULL)
	goto finish_up;

    if (!(code = DXNewArray (TYPE_INT, CATEGORY_REAL, 0)))
	goto finish_up;

    if (! DXAddArrayData (code, 0, 1, (Pointer) &ecode))
	goto finish_up;

    mess = DXNewString (emessptr);
    if (mess == NULL)
	goto finish_up;

    if (! DXSetEnumeratedMember (oobj, 0, (Object) code) ||
	! DXSetEnumeratedMember (oobj, 1, (Object) mess))
	goto finish_up;

    /*
     * If everything is OK then go ahead and return any objects too.
     */

    if (modret == OK)
    {
	/* send output list so the caller can tell which outputs
	 * were set.  only send the non-NULL ones.
	 */
	oarr = DXNewArray(TYPE_INT, CATEGORY_REAL, 0);
	if (!oarr)
	    goto finish_up;
	for (i = 0; i < nout; i++) {
	    if (! DXAddArrayData(oarr, i, 1, (olist+i) ? 
                                 (Pointer)&one : (Pointer)&zero))
		goto finish_up;
	}
	
	if (! DXSetEnumeratedMember(oobj, 2, (Object)oarr))
	    goto finish_up;
	

	count = 3;
        for (i = 0; i < nout; i++)
        {
	    if (olist[i] == NULL)
		continue;

	    if (! DXSetEnumeratedMember (oobj, count++, olist[i]))
		goto finish_up;

	}
    }

    if (!_dxfExportBin_FP ((Object)oobj, dxfd))
	goto finish_up;

    /* 
     * if you get to this point, there were no other errors.
     */
    ret = OK;


finish_up:

    /*
     * get rid of space not needed anymore.  this doesn't matter for
     * one-shots, but for persistent modules we will run out of memory
     * eventually if these aren't deleted.
     */

    DXDelete ((Object) iobj);
    DXDelete ((Object) oobj);

    DXFree ((Pointer) ilist);
    DXFree ((Pointer) olist);

    return ret;
}