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;
}
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;
}
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 );
}
}
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;
}
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;
}
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;
}
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);
}
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);
}
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 );
}
}
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;
}
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;
}
}
}
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;
}
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;
}