/* item[n] = start + n * delta */
static
Array MakeLinearList(Array start, Array end, int *n, Array delta)
{
int i, j;
Array a_start = NULL, a_end = NULL, a_delta = NULL;
int delstart = 0, delend = 0, deldelta = 0;
Array alist[3];
Array output = NULL;
int count = 1;
int bytes;
Type t;
Category c;
int rank;
int shape[MAXSHAPE];
int nitems;
int i_start, i_end, i_delta;
float f_start, f_end, f_delta, f_count;
Pointer dp;
int *ip;
Object in[MAXCOMPINPUTS]; /* hardcoded in compute */
Object out;
String compstr = NULL;
char cbuf[64];
Error rc;
/* do this or die in compute */
for (i=0; i<MAXCOMPINPUTS; i++)
in[i] = NULL;
/* find common format of start, end, delta and check for 4 parms */
i = 0;
if (start)
alist[i++] = start;
if (end)
alist[i++] = end;
if (delta)
alist[i++] = delta;
if (n) {
count = *n;
if (i == 3) {
DXWarning("too many inputs specified; ignoring delta");
i--;
delta = NULL;
}
}
else if (i == 2)
count = 2;
if (i < 2) {
DXSetError(ERROR_BAD_PARAMETER,
"not enough inputs specified to generate a list");
return NULL;
}
if (!DXQueryArrayCommonV(&t, &c, &rank, shape, i, alist)) {
DXAddMessage("start, end and/or delta");
return NULL;
}
/* shortcut the process here if the data is scalar integer or
* scalar float. otherwise, if the data is vector or ubyte
* or whatever, fall through and use Compute so we can increment
* by irregular values.
*/
if (t != TYPE_INT && t != TYPE_FLOAT)
goto complicated;
if (c != CATEGORY_REAL || rank != 0)
goto complicated;
/* compute missing value(s):
* start = end - ((count - 1) * delta)
* end = start + ((count - 1) * delta)
* count = ((end - start) / delta) + 1
* delta = (end - start) / (count - 1)
*/
/* convert to the common format */
if (start)
a_start = DXArrayConvertV(start, t, c, rank, shape);
if (end)
a_end = DXArrayConvertV(end, t, c, rank, shape);
if (delta)
a_delta = DXArrayConvertV(delta, t, c, rank, shape);
/* for integer, scalar lists */
if (t == TYPE_INT) {
if (!start) {
i_end = *(int *)DXGetArrayData(a_end);
i_delta = *(int *)DXGetArrayData(a_delta);
i_start = i_end - ((count - 1) * i_delta);
}
if (!end) {
i_start = *(int *)DXGetArrayData(a_start);
i_delta = *(int *)DXGetArrayData(a_delta);
i_end = i_start + ((count - 1) * i_delta);
}
if (!delta) {
/* if count == 1, generate a zero of the right type. otherwise
* divide to figure out the right delta to make count-1 steps
* between start and end. it's count-1 because if you want
* N numbers between start and end, you have N-1 increments.
*/
i_start = *(int *)DXGetArrayData(a_start);
i_end = *(int *)DXGetArrayData(a_end);
if (count == 1)
i_delta = 0;
else
i_delta = (i_end - i_start) / (count - 1);
/* try to catch the case where delta ends up being 0 (like
* because the inputs are int and the count is larger than
* the difference between start and end). allow it to be zero
* only if start == end; i suppose if you ask for 10 things
* where start == end you should be able to get them.
*/
if (i_delta == 0 && i_start != i_end) {
DXSetError(ERROR_BAD_PARAMETER,
"count too large to generate list between start and end");
goto error;
}
}
/* if all three arrays are there, count must be missing */
if (i == 3) {
i_start = *(int *)DXGetArrayData(a_start);
i_end = *(int *)DXGetArrayData(a_end);
i_delta = *(int *)DXGetArrayData(a_delta);
if (i_delta == 0)
count = 1;
else {
if ((i_end >= i_start && i_delta > 0) ||
(i_end < i_start && i_delta < 0))
count = (int)(((double)i_end-i_start) / (double)i_delta) +1;
else {
if (i_delta < 0)
DXSetError(ERROR_BAD_PARAMETER,
"delta must be positive if start is less than end");
else
DXSetError(ERROR_BAD_PARAMETER,
"delta must be negative if end is less than start");
goto error;
}
}
}
output = (Array)DXNewRegularArray(TYPE_INT, 1, count,
(Pointer)&i_start, (Pointer)&i_delta);
}
/* for float, scalar lists */
if (t == TYPE_FLOAT) {
if (!start) {
f_end = *(float *)DXGetArrayData(a_end);
f_delta = *(float *)DXGetArrayData(a_delta);
f_start = f_end - ((count - 1.0) * f_delta);
}
if (!end) {
f_start = *(float *)DXGetArrayData(a_start);
f_delta = *(float *)DXGetArrayData(a_delta);
f_end = f_start + ((count - 1.0) * f_delta);
}
if (!delta) {
/* if count == 1, generate a zero of the right type. otherwise
* divide to figure out the right delta to make count-1 steps
* between start and end. it's count-1 because if you want
* N numbers between start and end, you have N-1 increments.
*/
f_start = *(float *)DXGetArrayData(a_start);
f_end = *(float *)DXGetArrayData(a_end);
if (count == 1)
f_delta = 0.0;
else
f_delta = (f_end - f_start) / (count - 1.0);
/* try to catch the case where delta ends up being 0 (like
* because the inputs are int and the count is larger than
* the difference between start and end). allow it to be zero
* only if start == end; i suppose if you ask for 10 things
* where start == end you should be able to get them.
*/
if (f_delta == 0.0 && f_start != f_end) {
DXSetError(ERROR_BAD_PARAMETER,
"count too large to generate list between start and end");
goto error;
}
}
/* if all three arrays are there, count must be missing */
if (i == 3) {
f_start = *(float *)DXGetArrayData(a_start);
f_end = *(float *)DXGetArrayData(a_end);
f_delta = *(float *)DXGetArrayData(a_delta);
if (f_delta == 0.0)
count = 1;
else {
if ((f_end >= f_start && f_delta > 0) ||
(f_end < f_start && f_delta < 0)) {
/* the intermediate float variable below is to minimize
* float round-off error. if delta is 0.1 and you
* ask for a list between 0 and 1, it does the math in
* double, the delta used is actually 0.10000001, and
* you get counts = 10.9999999 instead of 11. when
* converted directly to int it becomes just 10 and your
* list ends at 0.9 instead of 1.
* math in base 2 has some problems.
*/
f_count = ((f_end - f_start) / f_delta) +1;
count = (int)f_count;
} else {
if (f_delta < 0)
DXSetError(ERROR_BAD_PARAMETER,
"delta must be positive if start is less than end");
else
DXSetError(ERROR_BAD_PARAMETER,
"delta must be negative if end is less than start");
goto error;
}
}
}
output = (Array)DXNewRegularArray(TYPE_FLOAT, 1, count,
(Pointer)&f_start, (Pointer)&f_delta);
}
DXDelete((Object)a_start);
DXDelete((Object)a_end);
DXDelete((Object)a_delta);
/* return Array */
return output;
/* input is a vector, or a data type different from int or float.
* use compute so this code doesn't have to be replicated for each
* different shape and type.
*/
complicated:
nitems = 1;
for (j=0; j<rank; j++)
nitems *= shape[j];
/* compute missing value(s):
* start = end - ((count - 1) * delta)
* end = start + ((count - 1) * delta)
* count = ((end - start) / delta) + 1
* delta = (end - start) / (count - 1)
*/
if (!start) {
compstr = DXNewString("$0 - (($1 - 1) * $2)");
if (!compstr)
goto error;
in[0] = (Object)compstr;
in[1] = (Object)end;
in[3] = (Object)delta;
in[2] = (Object)DXNewArray(TYPE_INT, CATEGORY_REAL, 0);
if (!in[2])
goto error;
if (!DXAddArrayData((Array)in[2], 0, 1, (Pointer)&count))
goto error;
/* i need to explain this - it's basically so if compute was
* going to try to cache this, it could add a reference and
* then later when i call delete the object won't get deleted
* out from underneath compute. (i know compute doesn't cache
* things, but a different module might.)
*/
DXReference((Object)compstr);
DXReference(in[2]);
rc = m_Compute(in, &out);
DXDelete((Object)compstr);
compstr = NULL;
DXDelete(in[2]);
in[2] = NULL;
if (rc == ERROR)
goto error;
start = (Array)out;
delstart++;
}
if (!end) {
compstr = DXNewString("$0 + (($1 - 1) * $2)");
if (!compstr)
goto error;
in[0] = (Object)compstr;
in[1] = (Object)start;
in[3] = (Object)delta;
in[2] = (Object)DXNewArray(TYPE_INT, CATEGORY_REAL, 0);
if (!in[2])
goto error;
if (!DXAddArrayData((Array)in[2], 0, 1, (Pointer)&count))
goto error;
DXReference((Object)compstr);
DXReference(in[2]);
rc = m_Compute(in, &out);
DXDelete((Object)compstr);
compstr = NULL;
DXDelete(in[2]);
in[2] = NULL;
if (rc == ERROR)
goto error;
end = (Array)out;
delend++;
}
if (!delta) {
/* if count == 1, generate a zero of the right type. otherwise
* divide to figure out the right delta to make count-1 steps
* between start and end. it's count-1 because if you want
* N numbers between start and end, you have N-1 increments.
*/
if (count == 1)
compstr = DXNewString("$1 - $1");
else
compstr = DXNewString("($2 - $0) / ($1 - 1)");
if (!compstr)
goto error;
in[0] = (Object)compstr;
in[1] = (Object)start;
in[3] = (Object)end;
in[2] = (Object)DXNewArray(TYPE_INT, CATEGORY_REAL, 0);
if (!in[2])
goto error;
if (!DXAddArrayData((Array)in[2], 0, 1, (Pointer)&count))
goto error;
DXReference((Object)compstr);
DXReference(in[2]);
rc = m_Compute(in, &out);
DXDelete((Object)compstr);
compstr = NULL;
DXDelete(in[2]);
in[2] = NULL;
if (rc == ERROR)
goto error;
delta = (Array)out;
deldelta++;
/* try to catch the case where delta ends up being 0 (like
* because the inputs are int and the count is larger than
* the difference between start and end). allow it to be zero
* only if start == end; i suppose if you ask for 10 things
* where start == end you should be able to get them.
*/
if (IsZero(delta) && !IsEqual(start, end)) {
DXSetError(ERROR_BAD_PARAMETER,
"count too large to generate list between start and end");
goto error;
}
}
/* if all three arrays are there, count must be missing */
if (i == 3) {
char tbuf[512];
int firsttime = 1;
int lastcount = 0;
/* this loop allows us to to handle vectors or matricies as
* well as scalars. it requires that the deltas compute to
* a consistent count. like start=[0 2 4], end=[4 8 16],
* would work if delta=[1 2 4] but not if delta was [1 2 2].
*/
for (j=0; j < nitems; j++) {
/* i think this code only works for vectors - i'm not sure
* what it will do with rank=2 data.
*/
/* this point of this next compute expression:
* if the delta is 0, don't divide by zero - the count is 1.
* if the end is smaller than the start, the delta has to be
* negative. if it's not, return -1. you can't generate a
* negative count from the equations, so this is a safe signal.
*/
sprintf(tbuf,
"float($2.%d) == 0.0 ? "
" 1 : "
" ( (($1.%d >= $0.%d) && ($2.%d > 0) || "
" ($1.%d < $0.%d) && ($2.%d < 0)) ? "
" int(float($1.%d - $0.%d) / float($2.%d)) + 1 : "
" -1 ) ",
j, j, j, j, j, j, j, j, j, j);
compstr = DXNewString(tbuf);
if (!compstr)
goto error;
in[0] = (Object)compstr;
in[1] = (Object)start;
in[2] = (Object)end;
in[3] = (Object)delta;
DXReference((Object)compstr);
rc = m_Compute(in, &out);
DXDelete((Object)compstr);
compstr = NULL;
if (rc == ERROR)
goto error;
if (!DXExtractInteger(out, &count)) {
DXSetError(ERROR_BAD_PARAMETER,
"can't compute number of items");
goto error;
}
DXDelete((Object)out);
if (count == 0)
continue;
if (count < 0) {
if (IsNegative(delta))
DXSetError(ERROR_BAD_PARAMETER,
"delta must be positive if start is less than end");
else
DXSetError(ERROR_BAD_PARAMETER,
"delta must be negative if end is less than start");
goto error;
}
if (firsttime) {
lastcount = count;
firsttime = 0;
} else {
if (count != lastcount) {
DXSetError(ERROR_BAD_PARAMETER,
"inconsistent number of items required by inputs");
goto error;
}
}
}
}
/* now have 4 consistant values - once again make sure they are
* converted into an identical format.
*/
a_start = DXArrayConvertV(start, t, c, rank, shape);
a_end = DXArrayConvertV(end, t, c, rank, shape);
a_delta = DXArrayConvertV(delta, t, c, rank, shape);
/* make empty array with n items */
output = DXNewArrayV(t, c, rank, shape);
if (!output)
goto error;
if (!DXAddArrayData(output, 0, count, NULL))
goto error;
dp = DXGetArrayData(output);
if (!dp)
goto error;
/* foreach n */
/* call compute to add delta */
/* memcpy to right offset in array */
/* end */
bytes = DXGetItemSize(output);
sprintf(cbuf, "%s($0 + ($1 * $2))", TypeName(t));
compstr = DXNewString(cbuf);
if (!compstr)
goto error;
in[0] = (Object)compstr;
in[1] = (Object)a_start;
in[3] = (Object)a_delta;
in[2] = (Object)DXNewArray(TYPE_INT, CATEGORY_REAL, 0);
if (!in[2])
goto error;
if (!DXAddArrayData((Array)in[2], 0, 1, NULL))
goto error;
ip = (int *)DXGetArrayData((Array)in[2]);
DXReference((Object)compstr);
DXReference(in[2]);
for (i=0; i<count; i++) {
*ip = i;
rc = m_Compute(in, &out);
if (rc == ERROR)
goto error;
memcpy(INCVOID(dp, bytes*i), DXGetArrayData((Array)out), bytes);
DXDelete((Object)out);
}
DXDelete((Object)compstr);
DXDelete(in[2]);
DXDelete((Object)a_start);
DXDelete((Object)a_end);
DXDelete((Object)a_delta);
if (delstart)
DXDelete((Object)start);
if (delend)
DXDelete((Object)end);
if (deldelta)
DXDelete((Object)delta);
/* return Array */
return output;
error:
DXDelete((Object)output);
DXDelete((Object)compstr);
DXDelete((Object)a_start);
DXDelete((Object)a_end);
DXDelete((Object)a_delta);
if (delstart)
DXDelete((Object)start);
if (delend)
DXDelete((Object)end);
if (deldelta)
DXDelete((Object)delta);
return NULL;
}
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;
}
static void
CaptionKeyStruck(void *data, DXKeyPressEvent *event)
{
CaptionData sdata = (CaptionData)data;
ModuleInput min[2];
ModuleOutput mout[1];
Object caption, strattr, posattr;
Object postion;
float *xyz;
int i, oldl, n, *ptr;
char *oldstr;
char *newstr;
Object obType = NULL;
int x = event->x;
int y = event->y;
char c = event->key;
if (sdata->label == NULL)
return;
caption = DXGetMember((Group)sdata->obj, sdata->label);
if (caption)
{
/*
* If there was already a member by that name, make sure its
* an appropriate object and get its state attributes.
*/
obType = DXGetAttribute(caption, "object type");
if (!obType || strcmp(DXGetString((String)obType), "caption"))
return;
strattr = DXGetAttribute(caption, "string");
posattr = DXGetAttribute(caption, "position");
}
else
{
/*
* Otherwise, we'll initialize the state. We'll need an object
* type attribute to put on the result (We re-use the one on the
* input if there already was a caption)
*/
obType = (Object)DXNewString("caption");
/*
* Initial state is an empty string at the current mouse
* position.
*/
strattr = (Object)DXNewString("");
posattr = (Object)DXNewArray(TYPE_FLOAT, CATEGORY_REAL, 1, 3);
DXAddArrayData((Array)posattr, 0, 1, NULL);
xyz = (float *)DXGetArrayData((Array)posattr);
xyz[0] = ((float)x)/sdata->w;
xyz[1] = ((float)(sdata->h - y))/sdata->w;
xyz[2] = 0.0;
}
DXExtractString(strattr, &oldstr);
/*
* Update the string.
*/
oldl = strlen(oldstr);
if (c == 0x8 /* BACKSPACE */)
{
if (oldl > 0)
{
newstr = (char *)DXAllocate(oldl + 1);
for (i = 0; i < oldl-1; i++)
newstr[i] = oldstr[i];
newstr[oldl-1] = '\0';
}
}
else
{
newstr = (char *)DXAllocate(oldl + 2);
for (i = 0; i < oldl; i++)
newstr[i] = oldstr[i];
newstr[oldl] = c;
newstr[oldl+1] = '\0';
}
strattr = (Object)DXNewString(newstr);
DXReference(strattr);
DXReference(posattr);
/*
* Use CallModule to call the Caption module. This creates the
* new caption object.
*/
DXModSetObjectInput(min+0, "string", strattr);
DXModSetObjectInput(min+1, "position", posattr);
DXModSetObjectOutput(mout+0, "caption", &caption);
DXCallModule("Caption", 2, min, 1, mout);
/*
* Replace attributes onto caption
*/
DXSetAttribute(caption, "string", strattr);
DXSetAttribute(caption, "position", posattr);
DXSetAttribute(caption, "object type", obType);
/*
* Replace it into scene object group
*/
DXSetMember((Group)sdata->obj, sdata->label, caption);
DXDelete(strattr);
DXDelete(posattr);
return;
}
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 );
}
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 );
}
}
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 );
}
}
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;
}
/* return outputs from module asynchronously
*/
Error DXSetOutputs(Object *olist, int dxfd)
{
static int firsttime = 1;
Array oarr;
Error ret = ERROR;
ErrorCode ecode;
Group iobj = NULL;
Group oobj = NULL;
Array code = NULL;
String mess = NULL;
int i;
int count = 0;
int one = 1;
int zero = 0;
if (firsttime && ! callsetup (dxfd)) {
host_status = HOST_CLOSED;
return ERROR;
}
ecode = DXGetError();
/*
* 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 (DXGetErrorMessage ());
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 (ecode == ERROR_NONE)
{
/* 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 < number_of_outputs; 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 < number_of_outputs; i++)
{
if (olist[i] == NULL)
continue;
if (! DXSetEnumeratedMember (oobj, count++, olist[i]))
goto finish_up;
}
}
/* if the exec isn't already sitting there waiting for results,
* alert it that something is going to come back down the pipe,
* wait for it to be called and eat the new inputs, and send
* the new outputs.
*/
if (!in_module) {
DXInternalReadyToRun();
iobj = (Group) _dxfImportBin_FP (dxfd);
if (iobj == NULL)
goto finish_up;
DXDelete ((Object)iobj);
}
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) oobj);
in_module = 0;
return ret;
}
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;
}
