Exemplo n.º 1
0
static Error HasInvalid(Field f, char *component, ICH *ih)
{
    Error rc = OK;
    char *dep = NULL;
    char *invalid = NULL;

    *ih = NULL;

    if (!DXGetStringAttribute(DXGetComponentValue(f, component), "dep", &dep))
	return OK;
    
#define INVLEN 10     /* strlen("invalid "); */    
    
    if (!(invalid = (char *)DXAllocate(strlen(dep) + INVLEN)))
	return ERROR;

    strcpy(invalid, "invalid ");
    strcat(invalid, dep);

    /* if no component, return NULL */
    if (!DXGetComponentValue(f, invalid))
	goto done;

    *ih = DXCreateInvalidComponentHandle((Object)f, NULL, dep);
    if (!*ih) {
	rc = ERROR;
	goto done;
    }
    
  done:
    DXFree((Pointer)invalid);
    return rc;
}
Exemplo n.º 2
0
/* return how many items in this field are valid */
static Error validcount(Field f, char *component, int *icount)
{
    Array a = NULL;
    char *dep = NULL;
    char *invalid = NULL;
    InvalidComponentHandle ih;

    /* assume none and be happily surprised when it finds some */
    *icount = 0;

    /* this must be called at the field level.  if you want to recurse
     * through a hierarchy, do the recursion above this subroutine.
     */
    if (DXGetObjectClass((Object)f) != CLASS_FIELD) {
	Return_Internal_Error;
    }
    
    a = (Array)DXGetComponentValue(f, component);
    if (!a) {
	DXSetError(ERROR_DATA_INVALID, "field has no `%s' component",
		   component);
	return ERROR;
    }

    /* follow a dependency. */
    if (!DXGetStringAttribute((Object)a, "dep", &dep)) {
	DXSetError(ERROR_DATA_INVALID, 
		   "The `%s' component does not have a `dep' attribute",
		   component);
	return ERROR;
    }
    
    if (!DXGetArrayInfo(a, icount, NULL, NULL, NULL, NULL))
	return ERROR;

#define INVLEN 10     /* strlen("invalid "); */    
    
    if (!(invalid = (char *)DXAllocate(strlen(dep) + INVLEN)))
	return ERROR;

    strcpy(invalid, "invalid ");
    strcat(invalid, dep);

    /* if no invalid component, all valid */
    if (!DXGetComponentValue(f, invalid)) {
	DXFree((Pointer)invalid);
	return OK;
    }
    DXFree((Pointer)invalid);

    ih = DXCreateInvalidComponentHandle((Object)f, NULL, dep);
    if (!ih) 
	return ERROR;

    *icount = DXGetValidCount(ih);
    DXFreeInvalidComponentHandle(ih);

    return OK;
}
Exemplo n.º 3
0
static Field
RefineField(Field field, char *args, int l)
{
    int	  limit = ((Args *)args)->limit;
    Field newField;
    Array array;

    if (DXEmptyField(field))
	return DXEndField(DXNewField());
    
    field = (Field)DXCopy((Object)field, COPY_STRUCTURE);
    if (! field)
	return NULL;

    array = (Array)DXGetComponentValue(field, "connections");

    if (DXQueryGridConnections(array, NULL, NULL))
	newField = _dxfRefineReg(field, limit);
    else
	newField = _dxfRefineIrreg(field, limit);

    if (newField == NULL)
	DXDelete((Object)field);
    
    return newField;
}
Exemplo n.º 4
0
/* unlike Inquire, say yes if you find any */
static int queryNDconnections(Field f, int n)
{
    char *cp;
    Object con;
    
    
    if (!(con = DXGetComponentValue(f, "connections"))) {
	if (n == 0)
	    return 1;
	return 0;
    }
    
    if (DXGetObjectClass(con) != CLASS_ARRAY)
	return 0;
    
    if (!DXGetStringAttribute(con, "element type", &cp))
	return 0;
    
    if (!strcmp(cp, "lines") && (n == 1))
	return 1;
    
    if ((!strcmp(cp, "triangles") || !strcmp(cp, "quads")) && (n == 2))
	return 1;
    
    if ((!strcmp(cp, "tetrahedra") || !strcmp(cp, "cubes")) && (n == 3))
	return 1;

    if (!strncmp(cp, "cubes", 5) && (strlen(cp) > 5) && (n > 3))
	return 1;

    return 0;
}
Exemplo n.º 5
0
int
_dxfRecognizeQuadsRR2D(Field field)
{
    Array 	array;
    int	  	nDim;
    int	  	status;
    Type	type;
    Category	cat;
    int		rank, shape[32];

    CHECK(field, CLASS_FIELD);

    ELT_TYPECHECK(field, "quads");

    status = OK;

    array = (Array)DXGetComponentValue(field, "positions");
    if (!array)
	return 0;
    
    if (!DXQueryGridPositions(array, &nDim, NULL, NULL, NULL))
	return 0;

    if (nDim != 2)
	return 0;

    if (! DXGetArrayInfo(array, NULL, &type, &cat, &rank, shape))
	return 0;

    if (cat != CATEGORY_REAL)
	return 0;

    if (rank != 1 || shape[0] != 2)
	return 0;

    array = (Array)DXGetComponentValue(field, "connections");
    if (!array)
	return 0;
    
    if (!DXQueryGridConnections(array, &nDim, NULL))
	return 0;
    
    if (nDim != 2)
	return 0;

    return status;
}
Exemplo n.º 6
0
static int qimage(Object o)
{
    int n;
    Array a;
    char *s;
    
    /* an image has got to be a field or a composite field */
    if (DXGetObjectClass(o) != CLASS_FIELD) {
	if (DXGetObjectClass(o) != CLASS_GROUP)
	    return 0;
	if (DXGetGroupClass((Group)o) != CLASS_COMPOSITEFIELD)
	    return 0;
	o = DXGetEnumeratedMember((Group)o, 0, NULL);
    }

    /* check to see if it's the right shape, etc */

    /* check positions */
    a = (Array) DXGetComponentValue((Field)o, "positions");
    if (!a || !DXQueryGridPositions(a, &n, NULL, NULL, NULL) || n!=2)
	return 0;
    
    /* check connections */
    a = (Array) DXGetComponentValue((Field)o, "connections");
    if (!a || !DXQueryGridConnections(a, &n, NULL) || n!=2)
	return 0;

    /* is there a colors component */
    a = (Array) DXGetComponentValue((Field)o, "colors");
    if (!a)
	return 0;

    /* check dep */
    s = DXGetString((String)DXGetAttribute((Object)a, "dep"));
    if (s && strcmp(s, "positions"))
	return 0;
    
    return 1;
}
Exemplo n.º 7
0
static int
doLeaf(Object *in, Object *out)
{
  int result=0;
  Field field;
  Category category;
  Category lookup_category;
  int rank, shape[30];
  char *cat_comp;
  char *data_comp;
  char *lookup_comp;
  char name_str[256];
  char *opstr;
  int operation;
  int lookup_knt;
  int lookup_knt_provided = 0;
  Array cat_array = NULL;
  Array data_array = NULL;
  Array out_array = NULL;
  Array array = NULL;
  Array lookup_array = NULL;
  float *out_data;
  int data_knt, cat_knt;
  int out_knt=0;
  Type cat_type, data_type, lookup_type;
  float floatmax;
  ICH invalid;

  if (DXGetObjectClass(in[0]) == CLASS_FIELD)
  {
    field = (Field)in[0];

    if (DXEmptyField(field))
      return OK;
  }

  if (!DXExtractString((Object)in[1], &opstr))
	opstr = STR_COUNT;

  if (!strcmp(opstr, STR_COUNT))
    operation = STAT_COUNT;
  else if (!strcmp(opstr, STR_MEAN))
    operation = STAT_MEAN;
  else if (!strcmp(opstr, STR_SD))
    operation = STAT_SD;
  else if (!strcmp(opstr, STR_VAR))
    operation = STAT_VAR;
  else if (!strcmp(opstr, STR_MIN))
    operation = STAT_MIN;
  else if (!strcmp(opstr, STR_MAX))
    operation = STAT_MAX;
  else if (!strcmp(opstr, STR_ACCUM))
    operation = STAT_ACCUM;
  else
    operation = STAT_UNDEF;

  if (operation == STAT_UNDEF) {
    DXSetError(ERROR_BAD_PARAMETER, "statistics operation must be one of: count, mean, sd, var, min, max");
    goto error;
  }

  if (!DXExtractString((Object)in[2], &cat_comp))
	cat_comp = STR_DATA;
  if (!DXExtractString((Object)in[3], &data_comp))
	data_comp = STR_DATA;

  if (in[0])
  {
      if (DXGetObjectClass(in[0]) != CLASS_FIELD)
      {
        DXSetError(ERROR_BAD_CLASS, "\"input\" should be a field");
        goto error;
      }

      cat_array = (Array)DXGetComponentValue((Field)in[0], cat_comp);
      if (! cat_array)
      {
        DXSetError(ERROR_MISSING_DATA, "\"input\" has no \"%s\" categorical component", cat_comp);
        goto error;
      }

      if (DXGetObjectClass((Object)cat_array) != CLASS_ARRAY)
      {
        DXSetError(ERROR_BAD_CLASS, "categorical component \"%s\" of \"input\" should be an array", cat_comp);
        goto error;
      }

      if (!HasInvalid((Field)in[0], cat_comp, &invalid))
      {
        DXSetError(ERROR_INTERNAL, "Bad invalid component");
        goto error;
      }

      if (invalid)
      {
        DXSetError(ERROR_DATA_INVALID, "categorical component must not contain invalid data");
        goto error;
      }

      DXGetArrayInfo(cat_array, &cat_knt, &cat_type, &category, &rank, shape);
      if ( (cat_type != TYPE_BYTE && cat_type != TYPE_UBYTE && cat_type != TYPE_INT && cat_type != TYPE_UINT)
             || category != CATEGORY_REAL || !((rank == 0) || ((rank == 1)&&(shape[0] == 1))))
      {
        DXSetError(ERROR_DATA_INVALID, "categorical component %s must be scalar non-float", cat_comp);
        goto error;
      }

      if (operation != STAT_COUNT) {
        data_array = (Array)DXGetComponentValue((Field)in[0], data_comp);
        if (! data_array)
        {
          DXSetError(ERROR_MISSING_DATA, "\"input\" has no \"%s\" data component", data_comp);
          goto error;
        }

        if (DXGetObjectClass((Object)data_array) != CLASS_ARRAY)
        {
          DXSetError(ERROR_BAD_CLASS, "data component \"%s\" of \"input\" should be an array", data_comp);
          goto error;
        }

        DXGetArrayInfo(data_array, &data_knt, &data_type, &category, &rank, shape);
        if ( (data_type != TYPE_BYTE && data_type != TYPE_UBYTE && data_type != TYPE_INT && data_type != TYPE_UINT
             && data_type != TYPE_FLOAT && data_type != TYPE_DOUBLE)	
               || category != CATEGORY_REAL || !((rank == 0) || ((rank == 1)&&(shape[0] == 1))))
        {
          DXSetError(ERROR_DATA_INVALID, "data component \"%s\" must be scalar", data_comp);
          goto error;
        }

        if (data_knt != cat_knt)
        {
	  DXSetError(ERROR_DATA_INVALID, "category and data counts must be the same");
	  goto error;
        }
      }
  }

  if (in[4]) {
      if (DXExtractString((Object)in[4], &lookup_comp)) {
	    lookup_array = (Array)DXGetComponentValue((Field)in[0], lookup_comp);
	    if (!lookup_array)
	    {
	      DXSetError(ERROR_MISSING_DATA, "\"input\" has no \"%s\" lookup component", lookup_comp);
	      goto error;
	    }
      } else if (DXExtractInteger((Object)in[4], &lookup_knt)) {
	    lookup_knt_provided = 1;
	    out_knt = lookup_knt;
      } else if (DXGetObjectClass((Object)in[4]) == CLASS_ARRAY) {
	    lookup_array = (Array)in[4];
	    sprintf(name_str, "%s lookup", cat_comp);
	    lookup_comp = name_str;
      } else { 
            DXSetError(ERROR_DATA_INVALID, "lookup component must be string, integer, or array");
	    goto error;
      }
  } else {
      sprintf(name_str, "%s lookup", cat_comp);
      lookup_comp = name_str;
      lookup_array = (Array)DXGetComponentValue((Field)in[0], lookup_comp);
  } 

  if (lookup_array) {
    DXGetArrayInfo(lookup_array, &lookup_knt, &lookup_type, &lookup_category, &rank, shape);
    out_knt = lookup_knt;
  } else if (!lookup_knt_provided){
    if (!DXStatistics((Object)in[0], cat_comp, NULL, &floatmax, NULL, NULL)) {
      DXSetError(ERROR_INTERNAL, "Bad statistics on categorical component");
      goto error;
    }
    out_knt = (int)(floatmax+1.5);
  }

  out_array = DXNewArray(TYPE_FLOAT, CATEGORY_REAL, 0);
  if (! out_array)
    goto error;

  if (! DXSetAttribute((Object)out_array, "dep", (Object)DXNewString("positions")))
    goto error;

  if (! DXAddArrayData(out_array, 0, out_knt, NULL))
    goto error;

  if (out[0])
  {
    if (DXGetObjectClass(out[0]) != CLASS_FIELD)
    {
      DXSetError(ERROR_INTERNAL, "non-field object found in output");
      goto error;
    }

    if (DXGetComponentValue((Field)out[0], "data"))
      DXDeleteComponent((Field)out[0], "data");

    if (! DXSetComponentValue((Field)out[0], "data", (Object)out_array))
      goto error;

    if (lookup_array) {
      if (! DXSetComponentValue((Field)out[0], lookup_comp, (Object)lookup_array))
        goto error;
    }
  }
  else
  {
    out[0] = (Object)DXNewField();
    array = DXMakeGridPositions(1, out_knt, 0.0, 1.0);
    if (!array)
	goto error;
    DXSetComponentValue((Field)out[0], "positions", (Object)array);
    array = DXMakeGridConnections(1, out_knt);
    if (!array)
	goto error;
    DXSetComponentValue((Field)out[0], "connections", (Object)array);
    DXSetComponentValue((Field)out[0], "data", (Object)out_array);
    if (lookup_array) {
      if (! DXSetComponentValue((Field)out[0], lookup_comp, (Object)lookup_array))
        goto error;
    }
  }

  out_data = DXGetArrayData(out_array);
  if (! out_data)
    goto error;

  result = CategoryStatistics_worker(
  		out_data, cat_knt, out_knt, cat_array, data_array,
		cat_type, data_type, operation);

  if (! result) {
     if (DXGetError()==ERROR_NONE)
        DXSetError(ERROR_INTERNAL, "error return from user routine");
     goto error;
  }

  result = (DXEndField((Field)out[0]) != NULL);

error:
  return result;
}
Exemplo n.º 8
0
static Error DoSXEnum( Object o, char *name, char *dep ){

      Array a;
      int n, i, *to;
      Object oo;


/*  If the supplied object is a field... */

      switch( DXGetObjectClass( o ) ){
      case CLASS_FIELD:


/*  See how many items there are in the requested component. */

         a = (Array) DXGetComponentValue( (Field) o, dep );
         if( !a ) {
            DXSetError( ERROR_DATA_INVALID, "field has no \"%s\" component", dep );
            return( ERROR );
         }

         DXGetArrayInfo( a, &n, NULL, NULL, NULL, NULL );


/*  Create a new array to hold the enumeration, and get a pointer to it. */

         a = (Array) DXNewArray( TYPE_INT, CATEGORY_REAL, 0 );
         if( !DXAddArrayData( a, 0, n, NULL ) ) return( ERROR );
         to = (int *) DXGetArrayData( a );


/*  Add this new array to the field. */

         DXSetComponentValue( (Field) o, name, (Object) a );


/*  Store a value for the "dep" attribute of the new array. */

         DXSetComponentAttribute( (Field) o, name, "dep", (Object) DXNewString( dep ) );


/*  Store the enumeration values. */

         for( i=0; i<n; i++ ) *(to++) = i;


/*  Indicate that the component values have changed, and complete the
 *  output field. */

         DXChangedComponentValues( (Field) o, name );
         if( !DXEndField( (Field) o ) ) return( ERROR );

         break;


/*  If the supplied object is a group, call this function recursively for
 *  each member of the group. */

      case CLASS_GROUP:

         for( i=0; oo=(Object)DXGetEnumeratedMember((Group)o,i,NULL); i++ ){
            if( !DoSXEnum( oo, name, dep ) ) return( ERROR );
         }

         break;

      }

      return( OK );

}
Exemplo n.º 9
0
Error m_SXConstruct( Object *in, Object*out){
/*
*+
*  Name:
*     SXConstruct

*  Purpose:
*     constructs a regular field with regular connections

*  Language:
*     ANSI C

*  Syntax:
*     output = SXConstruct( object, lower, upper, deltas, counts );

*  Classification:
*     Realization

*  Description:
*     The SXConstruct module constructs a field with regular positions
*     and connections covering a volume with specified bounds. It is
*     similar to the standard Construct module, but is somewhat easier to
*     use if a simple grid is required.

*     If "object" is given, its bounds define the extent of the output
*     field. Otherwise, the vectors given for "upper" and "lower" define
*     the extent of the output field.

*     If "deltas" is supplied, it defines the distances between adjacent
*     positions on each axis. It should be a vector with the same number
*     of dimensions as "upper" and "lower", or a single value (in which
*     case the supplied value is used for all axes). The upper and lower
*     bounds are expanded if necessary until they span an integer number
*     of deltas.
*
*     If "deltas" is not supplied, then "counts" must be supplied and
*     should be an integer vector giving the number of positions on each
*     axis, or a single integer (in which case the same value is used for
*     all axes).

*  Parameters:
*     object = field (given)
*        object to define extent of new field [none]
*     lower = vector (Given)
*        explicit lower bounds of new field [none]
*     upper = vector (Given)
*        explicit upper bounds of new field [none]
*     deltas = scalar or vector (Given)
*        increment for each axis
*     counts = integer or vector (Given)
*        number of positions along each axis
*     output = field (Returned)
*        output field

*  Components:
*     The output has "positions", "connections" and "box" components, but
*     no "data" component.

*  Examples:
*     This example imports a scattered data set from "C02.general",
*     extracts a single frame, uses SXConstruct to make a grid covering the
*     bounds of the frame, with increments of 10.0 along each axis, and
*     then uses SXBIN to find the mean data value in each of the square
*     connections of this new grid. the resulting field is displayed.
*
*     data = Import("/usr/lpp/dx/samples/data/CO2.general");
*     frame17 = Select(data,17);
*     newgrid = SXConstruct(frame17,deltas=10);
*     binned = SXBin(frame17,newgrid);
*     coloured = AutoColor(binned);
*     camera = AutoCamera(coloured);
*     Display(coloured,camera);

*  See Also:
*     Construct, Grid

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

*  Bugs:
*     {note_any_bugs_here}

*-
*/


/*  Local Variables. */


      int      cnt[3];       /* Counts */
      int     *counts;       /* Pointers to counts */
      float    del[3];       /* Deltas */
      float    del3d[9];     /* 3-D Deltas */
      float   *deltas;       /* Pointers to deltas */
      float   *lower;        /* Pointer to lower bounds */
      float   *upper;        /* Pointer to upper bounds */
      float    lbnd[3];      /* lower bounds */
      float    ubnd[3];      /* upper bounds */
      int      ndim;         /* No. of components for each vector */
      int      ndim2;        /* No. of dimensions in second object */
      Object   o=NULL;       /* Output object */
      float    bnd;          /* Current bound value */
      Point    box[8];       /* Bounding box */
      Category cat;          /* Array category */
      Array    array;        /* An array */
      float   *box_ptr;      /* Pointer to box array */
      int      i;            /* Loop count */
      int      j;            /* Loop count */
      int      ncorn;        /* No. of corners in the bounding box */
      int      rank;         /* Array rank */
      float    tmp;          /* Swapping space */
      Type     type;         /* Array numeric type */


/*  If OBJECT was supplied, check it is a field. */

      if( in[0] ){

         if( DXGetObjectClass(in[0]) != CLASS_FIELD ){
            DXSetError( ERROR_BAD_TYPE, "input object is not a field" );
            goto error;
         }


/*  Take a copy of it. */

         o = DXCopy( in[0], COPY_STRUCTURE );


/*  Get the bounding box component from the object */

         array = (Array) DXGetComponentValue( (Field) o, "box" );


/*  If no bounding box was found, create one. */

         if( !array ){
            if( !DXBoundingBox( o, box ) ){
               DXSetError( ERROR_UNEXPECTED, "cannot obtain a bounding box." );
               goto error;
            }
            array = (Array) DXGetComponentValue( (Field) o, "box" );
         }


/*  Get a pointer to the bounding box array and the number of items in
 *  the array, etc. */

         box_ptr = (float *) DXGetArrayData( array );
         DXGetArrayInfo( array, &ncorn, &type, &cat, &rank, &ndim );

         if( type != TYPE_FLOAT ){
            DXSetError( ERROR_BAD_TYPE, "input object positions are not TYPE_FLOAT");
            goto error;
         }

         if( cat != CATEGORY_REAL ){
            DXSetError( ERROR_BAD_TYPE, "input object positions are not REAL");
            goto error;
         }

         if( rank > 1 ){
            DXSetError( ERROR_BAD_TYPE, "input object positions have rank larger than 1");
            goto error;
         }

         if( rank == 0 ) ndim = 1;

         if( ndim > 3 ){
            DXSetError( ERROR_BAD_TYPE, "input object positions have more than 3 dimensions");
            goto error;
         }


/*  Store the bounds for each dimension. */

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

         for( i=0; i<ncorn; i++ ){
            for( j=0; j<ndim; j++ ){
               bnd = *(box_ptr++);
               if( bnd < lbnd[j] ) lbnd[j]=bnd;
               if( bnd > ubnd[j] ) ubnd[j]=bnd;
            }
         }


/*  Delete the copy of the input object */

         DXDelete( o );
         o = NULL;
         array = NULL;


/*  If OBJECT was not supplied, get the bounds from LOWER and UPPER. */

      } else {

         if( !in[1] ) {
            DXSetError( ERROR_MISSING_DATA, "No lower bounds supplied");
            goto error;

         } else {
            lower = SXGet1r( "lower", in[1], &ndim );
            if( !lower ) goto error;

            if( ndim > 3 ){
               DXSetError( ERROR_BAD_TYPE, "lower bounds have more than 3 dimensions");
               goto error;
            }

         }

         if( !in[2] ) {
            DXSetError( ERROR_MISSING_DATA, "No upper bounds supplied");
            goto error;

         } else {
            upper = SXGet1r( "upper", in[2], &ndim2 );
            if( !upper ) goto error;

            if( ndim2 != ndim ){
               DXSetError( ERROR_BAD_TYPE, "number of upper and lower bounds does not match");
               goto error;
            }

         }

         for( j=0; j<ndim; j++){
            lbnd[j] = lower[j];
            ubnd[j] = upper[j];
         }

      }


/*  Ensure bounds are OK. */

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


/*  If DELTAS was supplied, get its values and check dimensionality. */

      if( in[3] ){
         deltas = SXGet1r( "deltas", in[3], &ndim2 );

         if( ndim2 == 1 ){
            for( j=0; j<ndim; j++){
               del[j] = *deltas;
            }

         } else {
            if( ndim2 != ndim ){
               DXSetError( ERROR_BAD_TYPE, "incorrect number of deltas given");
               goto error;
            } else {
               for( j=0; j<ndim; j++){
                  del[j] = deltas[j];
               }
            }
         }


/*  Find the corresponding counts and adjust lower bounds */

         for( j=0; j<ndim; j++ ){
            if( del[j] > 0.0 ){
               cnt[j] = 1 + (int) ( 0.9999 + (ubnd[j]-lbnd[j])/del[j] );
               lbnd[j] = 0.5*( ubnd[j] + lbnd[j] - ( cnt[j] - 1 )*del[j] );
            } else {
               DXSetError( ERROR_BAD_TYPE, "negative or zero delta given");
               goto error;
            }
         }


/*  If COUNTS was supplied, get its values and check dimensionality. */

      } else if( in[4] ){
         counts = SXGet1i( "counts", in[4], &ndim2 );

         if( ndim2 == 1 ){
            for( j=0; j<ndim; j++){
               cnt[j] = *counts;
            }

         } else {
            if( ndim2 != ndim ){
               DXSetError( ERROR_BAD_TYPE, "incorrect number of counts given");
               goto error;
            } else {
               for( j=0; j<ndim; j++){
                  cnt[j] = counts[j];
               }
            }
         }


/*  Find corresponding DELTAS */

         for( j=0; j<ndim; j++ ){
            if( cnt[j] > 1 ) {
               del[j] = ( ubnd[j] - lbnd[j] )/( (float) cnt[j] - 1 );

            } else {
               cnt[j] = 1;
               del[j] = 1.0;
               tmp = 0.5*( ubnd[j]+ lbnd[j] );
               ubnd[j] = tmp;
               lbnd[j] = tmp;
            }

         }


/*  report an error if neither COUNTS nor DELTAS was supplied. */

      } else {
         DXSetError( ERROR_MISSING_DATA, "no deltas or counts given");
         goto error;
      }


/*  Construct the n-d delta vectors, form the increments on each axis. */

      for( j=0; j<9; j++ ) del3d[j] = 0.0;
      for( j=0; j<ndim; j++ ) del3d[ j*(ndim+1) ] = del[j];


/*  Create the output field. */

      o = (Object) DXNewField();
      if( !o ) goto error;


/* Create the positions array and put it in the field. */

      array = DXMakeGridPositionsV( ndim, cnt, lbnd, del3d );
      if( !array ) goto error;
      if( !DXSetComponentValue( (Field) o, "positions", (Object) array ) ) goto error;
      array = NULL;


/* Create the connections array and put it in the field. */

      array = DXMakeGridConnectionsV( ndim, cnt );
      if( !array ) goto error;
      if( !DXSetComponentValue( (Field) o, "connections", (Object) array ) ) goto error;
      array = NULL;


/*  Finish the field */

      if( !DXEndField( (Field) o ) ) goto error;


/*  Return the output field. */

      out[0] = o;
      return( OK );

error:
      DXDelete( o );
      return( ERROR );

}
Exemplo n.º 10
0
Error 
_dxfValidate(Field f)
{
    Array current = NULL;
    Array target = NULL;
    char *tname, *cname;
    int ncurrent, ntarget, *ip;
    int index;
    unsigned char *cp;
    int i, j, lim, nitems;
    Type type, ref_type;
    Category cat;
    String s = NULL;
    Object o = NULL;
    int rank, shape[MAXRANK];
    int counts[MAXRANK];

    for (i=0; (current=(Array)DXGetEnumeratedComponentValue(f, i, &cname)); i++) {

	/* dep */
	if ((s = (String)DXGetAttribute((Object)current, "dep")) != NULL) {
	    /* make sure number of items matches number of items in dep */
	    if ((DXGetObjectClass((Object)s) != CLASS_STRING) ||
	        ((tname = DXGetString(s)) == NULL)) {
		DXSetError(ERROR_DATA_INVALID, 
			 Err_MustBeString, "dep", cname);
		return ERROR;
	    }
	    
	    if ((target = (Array)DXGetComponentValue(f, tname)) == NULL) {
		DXSetError(ERROR_DATA_INVALID, 
			 Err_MissingComp, tname, "dep", cname);
		return ERROR;
	    }
	    
	    if (DXGetObjectClass((Object)target) != CLASS_ARRAY) {
		DXSetError(ERROR_DATA_INVALID,
			 Err_NotArray, tname, "dep", cname);
		return ERROR;
	    }
	    
	    if (!DXGetArrayInfo(current, &nitems, &type, &cat, &rank, shape))
		return ERROR;
	    
	    ncurrent = nitems;

	    if (!DXGetArrayInfo(target, &nitems, &type, &cat, &rank, shape))
		return ERROR;
	    
	    ntarget = nitems;
	    
	    if (ncurrent != ntarget) {
		DXSetError(ERROR_DATA_INVALID,
			 Err_DiffCount, "dep",
			 ncurrent, cname, ntarget, tname);
		return ERROR;
	    }

	} /* end of if (has dep) */


	/* ref */
	if ((s = (String)DXGetAttribute((Object)current, "ref")) != NULL) {
	    if ((DXGetObjectClass((Object)s) != CLASS_STRING) ||
	        ((tname = DXGetString(s)) == NULL)) {
		DXSetError(ERROR_DATA_INVALID, 
			   Err_MustBeString, "ref", cname);
		return ERROR;
	    }
	    
	    if ((target = (Array)DXGetComponentValue(f, tname)) == NULL) {
		DXSetError(ERROR_DATA_INVALID,
			   Err_MissingComp, tname, "ref", cname);
		return ERROR;
	    }
	    
	    if (DXGetObjectClass((Object)target) != CLASS_ARRAY) {
		DXSetError(ERROR_DATA_INVALID, 
			   Err_NotArray, tname, "ref", cname);
		return ERROR;
	    }
	    
	    if (!DXGetArrayInfo(current, &nitems, &type, &cat, &rank, shape))
		return ERROR;
	    
	    if ( !( type == TYPE_INT || type == TYPE_UBYTE ) ) {
		DXSetError(ERROR_DATA_INVALID, Err_RefNotInt, cname);
		return ERROR;
	    }
	    ref_type = type;
	    
	    ncurrent = nitems;
	    for (j=0; j<rank; j++)
	        ncurrent *= shape[j];
	    
	    if (ncurrent > 0) {
                
		if (!DXGetArrayInfo(target, &nitems, &type, &cat, &rank, shape))
		    return ERROR;
		
		ntarget = nitems;
                
                /* only do this if they are already irregular */
                if (DXGetArrayClass(current) == CLASS_ARRAY) {
                    if ((ip = (int *)DXGetArrayData(current)) == NULL)
                        return ERROR;
		    cp = (unsigned char *) ip;
                    
		    /* neighbors can have -1's as indicies */
                    lim = strcmp(cname, "neighbors") ? 0 : -1;

		    for (j=0; j < ncurrent; j++) {
			if (ref_type == TYPE_INT) index = *(ip++);
			else                      index = *(cp++);

			if (index < lim || index >= ntarget) {
			    DXSetError(ERROR_DATA_INVALID, Err_OutOfRange,
				j+1, ending(j+1), cname, index, lim, ntarget-1);
			    return ERROR;
			}
		    }

                } else if (DXQueryGridConnections(current, &rank, counts)) {
		    for (j=0, ncurrent=1; j<rank; j++)
			ncurrent *= counts[j];
                    if (ncurrent > ntarget) {
                        DXSetError(ERROR_DATA_INVALID,
                                 Err_DiffCount, "ref",
                                 ncurrent, cname, ntarget, tname);
                        return ERROR;
                    }
                } else {
                    /* mesh array of mixed path and irregular arrays. */
                    /* have to handle the terms separately */
                }
	    }
	} /* end of if (has ref) */


        /* der - can be string lists here */
	if ((o = DXGetAttribute((Object)current, "der")) != NULL) {

	    if (DXExtractString(o, &tname)) {    /* simple string? */
		if ((target = (Array)DXGetComponentValue(f, tname)) == NULL) {
		    DXSetError(ERROR_DATA_INVALID,
			       Err_MissingComp, tname, "der", cname);
		    return ERROR;
		}
		
		if (DXGetObjectClass((Object)target) != CLASS_ARRAY) {
		    DXSetError(ERROR_DATA_INVALID,
			       Err_NotArray, tname, "der", cname);
		    return ERROR;
		}
	    } else if (DXExtractNthString(o, 0, &tname)) {  /* string list? */
		for (j=0; DXExtractNthString(o, j, &tname); j++) {
		    
		    if ((target = (Array)DXGetComponentValue(f, tname)) == NULL) {
			DXSetError(ERROR_DATA_INVALID,
				   Err_MissingComp, tname, "der", cname);
			return ERROR;
		    }
		    
		    if (DXGetObjectClass((Object)target) != CLASS_ARRAY) {
			DXSetError(ERROR_DATA_INVALID,
				   Err_NotArray, tname, "der", cname);
			return ERROR;
		    }
		}
	    } else {  /* neither string or string list */
		DXSetError(ERROR_DATA_INVALID, 
			   Err_MustBeStringList, "der", cname);
		return ERROR;
	    }
	    
	} /* end of if (has der) */

        /* element type */
	if ((s = (String)DXGetAttribute((Object)current, "element type")) != NULL) {
	    if ((DXGetObjectClass((Object)s) != CLASS_STRING) ||
	        ((tname = DXGetString(s)) == NULL)) {
		DXSetError(ERROR_DATA_INVALID, 
			 Err_MustBeString, "element type", cname);
		return ERROR;
	    }
	    
	    if (!strcmp(cname, "connections") && 
		DXQueryGridConnections(current, &rank, counts)) {

		if (!elemtypecheck(rank, tname))
		    return ERROR;
	    }

	} /* end of if (has element type) */

    }  /* for each component in the field */

    /* check for missing positions component if the field has more than
     *  one component.
     */
    if (i > 1 && !DXGetComponentValue(f, "positions"))
	DXWarning("importing a field with no `positions' component");

    return OK;
}
Exemplo n.º 11
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 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
static Error saydata(Object o, char *opt)
{
    Array a;
    int nitems;
    Type type;
    Category category;
    int rank;
    int shape[MAXRANK];
    int valids;
    Point boxlist[8];
    Point vboxlist[8];
    float min, max, avg;

    if (DXGetObjectClass(o) == CLASS_ARRAY) {
	DXGetArrayInfo((Array)o, &nitems, &type, &category, &rank, shape);
	pinfo(1, nitems, nitems, type, category, rank, shape);
    } else if (DXGetObjectClass(o) == CLASS_FIELD) {
	a = (Array)DXGetComponentValue((Field)o, "positions");
	if (!a) {
	    DescribeMsg("The Field does not contain any positions.  It will not cause an error, but will be\n");
	    DescribeMsg("silently ignored by most modules since positions are required.\n");
	    DescribeMsg("Use the `Mark' or `Replace' module to create a `positions' component.\n");
	}
	a = (Array)DXGetComponentValue((Field)o, "data");
	if (!a) {
	    DescribeMsg("The Field contains nothing marked as data items.\n");
            DescribeMsg("If the Field does contain data under another name, use the `Mark' module\n");
            DescribeMsg("to select what should be used as data.\n");
	} else {
	    DXGetArrayInfo(a, &nitems, &type, &category, &rank, shape);
	    if (!validcount((Field)o, "data", &valids))
		return ERROR;
	    pinfo(1, nitems, valids, type, category, rank, shape);
	}
    } else if (!DXGetType((Object)o, &type, &category, &rank, shape)) {
	/* DescribeMsg("no data type information\n"); */
	DXResetError();
    } else
	pinfo(0, 0, 0, type, category, rank, shape);

    /* get bbox and print it in a non-threatening format */
    if (!DXBoundingBox(o, boxlist)) {
	/* DescribeMsg("Cannot get information about the positions of the data\n"); */
	DXResetError();
    } else {
	DescribeMsg("The positions are enclosed within the box defined by the corner points:\n");
	DescribeMsg("[ %g %g %g ] and [ %g %g %g ]\n", 
		  boxlist[0].x, boxlist[0].y, boxlist[0].z,
		  boxlist[7].x, boxlist[7].y, boxlist[7].z);
    }
    if (!DXValidPositionsBoundingBox(o, vboxlist)) {
	/* DescribeMsg("Cannot get information about the valid positions of the data\n"); */
	DXResetError();
    } else {
	if ((boxlist[0].x != vboxlist[0].x) || (boxlist[7].x != vboxlist[7].x)
	 || (boxlist[0].y != vboxlist[0].y) || (boxlist[7].y != vboxlist[7].y)
	 || (boxlist[0].z != vboxlist[0].z) || (boxlist[7].z != vboxlist[7].z)) {
	    DescribeMsg("The VALID positions are enclosed within the box defined by the corner points:\n");
	    DescribeMsg("[ %g %g %g ] and [ %g %g %g ]\n", 
		      vboxlist[0].x, vboxlist[0].y, vboxlist[0].z,
		      vboxlist[7].x, vboxlist[7].y, vboxlist[7].z);
	}
    }

    /* something about data stats */
    if (!DXStatistics(o, "data", &min, &max, &avg, NULL)) {
	/* DescribeMsg("Cannot get information about the data values\n"); */
	DXResetError();
    } else {
	DescribeMsg("Data range is:\n");
	DescribeMsg("minimum = %g, maximum = %g, average = %g\n", 
		    min, max, avg);
	if (rank > 0) {
	    /* ??? call vectorstats here if rank >= 1 
	     * look at the code in histogram; does rank=1, nothing
	     * about larger.
	     */
	    DescribeMsg("(These are the scalar statistics which will be used by modules\n");
	    DescribeMsg("which need scalar values.  The length is computed for vectors and\n");
	    DescribeMsg("the determinant for matricies.)\n");
	}
    }
    return OK;
	
}
Exemplo n.º 14
0
/* make sure the field contains colors and that > 1 are valid.
 * i guess we can look to see that the positions are 1D <= p <= 3D
 * as well.  and we could look at connections here as well.
 */
static Error validfield(Field f, struct info *ip, int nosee)
{
    int icount = 0;
    Array colors, pos, conn;
    char *elem = NULL;
    char *dep = NULL;
    char *invalid = NULL;
    InvalidComponentHandle ih;

    
    /* check for fields - recurse above this */
    if (DXGetObjectClass((Object)f) != CLASS_FIELD) {
	Return_Internal_Error;
    }

    /* check pos first */
    pos = (Array)DXGetComponentValue(f, "positions");
    if (!pos) {
	ip->np.nopos++;
	return OK;
    }

    if (!DXGetArrayInfo(pos, &icount, NULL, NULL, NULL, NULL))
	return ERROR;

    if (icount <= 0) {
	ip->np.nopos++;
	return OK;
    }

    /* pos must be vector, rank 1,  1 <= shape <= 3 */
    if ((!DXTypeCheck(pos, TYPE_FLOAT, CATEGORY_REAL, 1, 1)) &&
	(!DXTypeCheck(pos, TYPE_FLOAT, CATEGORY_REAL, 1, 2)) &&
	(!DXTypeCheck(pos, TYPE_FLOAT, CATEGORY_REAL, 1, 3))) {
	ip->ri.badpos++;
	return OK;
    }

    /* check Nd of conn here.  if "nosee" is true, don't count the
     * Nd of the connections because normal modules won't "see" these
     * as normal fields.
     */
    
    if (!nosee) {
	conn = (Array)DXGetComponentValue(f, "connections");
	if (!conn)
	    ip->nd.c0++;
	else if (DXGetObjectClass((Object)conn) != CLASS_ARRAY)
	    ip->nd.cbad++;
	else if (!DXGetStringAttribute((Object)conn, "element type", &elem))
	    ip->nd.cmissing++;
	else if (!strcmp(elem, "lines"))
	    ip->nd.c1++;
	else if (!strcmp(elem, "triangles") || !strcmp(elem, "quads"))
	    ip->nd.c2++;
	else if (!strcmp(elem, "tetrahedra") || !strcmp(elem, "cubes"))
	    ip->nd.c3++;
	else if (!strncmp(elem, "cubes", 5) && (strlen(elem) > 5))
	    ip->nd.cplus++;
	else
	    ip->nd.cbad++;
    }

   
    /* expect colors and follow dependency */
    colors = (Array)DXGetComponentValue(f, "colors");
    if (!colors) {
	ip->ri.nocolors++;
	return OK;
    } else {
	/* check for colormap component */
	if (DXGetComponentValue(f, "color map") != NULL)
	    ip->nc.cbytemap++;
	else if (DXTypeCheck(colors, TYPE_UBYTE, CATEGORY_REAL, 1, 3))
	    ip->nc.cubyte++;	
	else if (DXTypeCheck(colors, TYPE_FLOAT, CATEGORY_REAL, 1, 3))
	    ip->nc.cfloat++;
	else
	    ip->nc.cunknown++; 
    }

    /* follow colors dependency.  it will be unusual to find no dep. */
    if (!DXGetStringAttribute((Object)colors, "dep", &dep)) {
	ip->np.nodep++;
	return OK;
    }
    
    if (!DXGetArrayInfo(colors, &icount, NULL, NULL, NULL, NULL))
	return ERROR;

    if (icount == 0) {
	ip->np.novalid++;
	return OK;
    }
	
#define INVLEN 10     /* strlen("invalid "); */    
    
    if (!(invalid = (char *)DXAllocate(strlen(dep) + INVLEN)))
	return ERROR;

    strcpy(invalid, "invalid ");
    strcat(invalid, dep);

    /* if no invalid component, all valid */
    if (!DXGetComponentValue(f, invalid)) {
	DXFree((Pointer)invalid);
	ip->ri.nfields++;
	return OK;
    }
    DXFree((Pointer)invalid);

    ih = DXCreateInvalidComponentHandle((Object)f, NULL, dep);
    if (!ih) 
	return ERROR;

    icount = DXGetValidCount(ih);
    DXFreeInvalidComponentHandle(ih);

    if (icount == 0) {
	ip->np.novalid++;
	return OK;
    }

    ip->ri.nfields++;
    return OK;
}