/*
******** nrrdSample_nva()
**
** given coordinates within a nrrd, copies the
** single element into given *val
*/
int
nrrdSample_nva(void *val, const Nrrd *nrrd, const size_t *coord) {
char me[]="nrrdSample_nva", err[BIFF_STRLEN];
size_t I, size[NRRD_DIM_MAX], typeSize;
unsigned int ai;
if (!(nrrd && coord && val)) {
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err); return 1;
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(nrrd)) {
sprintf(err, "%s: nrrd reports zero element size!", me);
biffAdd(NRRD, err); return 1;
}
typeSize = nrrdElementSize(nrrd);
nrrdAxisInfoGet_nva(nrrd, nrrdAxisInfoSize, size);
for (ai=0; ai<nrrd->dim; ai++) {
if (!( coord[ai] < size[ai] )) {
sprintf(err, "%s: coordinate " _AIR_SIZE_T_CNV
" on axis %d out of bounds (0 to " _AIR_SIZE_T_CNV ")",
me, coord[ai], ai, size[ai]-1);
biffAdd(NRRD, err); return 1;
}
}
NRRD_INDEX_GEN(I, coord, size, nrrd->dim);
memcpy(val, (char*)(nrrd->data) + I*typeSize, typeSize);
return 0;
}
/*
******** nrrdSpatialResample()
**
** general-purpose array-resampler: resamples a nrrd of any type
** (except block) and any dimension along any or all of its axes, with
** any combination of up- or down-sampling along the axes, with any
** kernel (specified by callback), with potentially a different kernel
** for each axis. Whether or not to resample along axis d is
** controlled by the non-NULL-ity of info->kernel[ai]. Where to sample
** on the axis is controlled by info->min[ai] and info->max[ai]; these
** specify a range of "positions" aka "world space" positions, as
** determined by the per-axis min and max of the input nrrd, which must
** be set for every resampled axis.
**
** we cyclically permute those axes being resampled, and never touch
** the position (in axis ordering) of axes along which we are not
** resampling. This strategy is certainly not the most intelligent
** one possible, but it does mean that the axis along which we're
** currently resampling-- the one along which we'll have to look at
** multiple adjecent samples-- is that resampling axis which is
** currently most contiguous in memory. It may make sense to precede
** the resampling with an axis permutation which bubbles all the
** resampled axes to the front (most contiguous) end of the axis list,
** and then puts them back in place afterwards, depending on the cost
** of such axis permutation overhead.
*/
int
nrrdSpatialResample(Nrrd *nout, const Nrrd *nin,
const NrrdResampleInfo *info) {
char me[]="nrrdSpatialResample", func[]="resample", err[BIFF_STRLEN];
nrrdResample_t
*array[NRRD_DIM_MAX], /* intermediate copies of the input data
undergoing resampling; we don't need a full-
fledged nrrd for these. Only about two of
these arrays will be allocated at a time;
intermediate results will be free()d when not
needed */
*_inVec, /* current input vector being resampled;
not necessarily contiguous in memory
(if strideIn != 1) */
*inVec, /* buffer for input vector; contiguous */
*_outVec; /* output vector in context of volume;
never contiguous */
double tmpF;
double ratio, /* factor by which or up or downsampled */
ratios[NRRD_DIM_MAX]; /* record of "ratio" for all resampled axes,
used to compute new spacing in output */
Nrrd *floatNin; /* if the input nrrd type is not nrrdResample_t,
then we convert it and keep it here */
unsigned int ai,
pi, /* current pass */
topLax,
permute[NRRD_DIM_MAX], /* how to permute axes of last pass to get
axes for current pass */
ax[NRRD_DIM_MAX+1][NRRD_DIM_MAX], /* axis ordering on each pass */
passes; /* # of passes needed to resample all axes */
int i, s, e,
topRax, /* the lowest index of an axis which is
resampled. If all axes are being resampled,
then this is 0. If for some reason the
"x" axis (fastest stride) is not being
resampled, but "y" is, then topRax is 1 */
botRax, /* index of highest axis being resampled */
typeIn, typeOut; /* types of input and output of resampling */
size_t sz[NRRD_DIM_MAX+1][NRRD_DIM_MAX];
/* how many samples along each
axis, changing on each pass */
/* all these variables have to do with the spacing of elements in
memory for the current pass of resampling, and they (except
strideIn) are re-set at the beginning of each pass */
nrrdResample_t
*weight; /* sample weights */
unsigned int ci[NRRD_DIM_MAX+1],
co[NRRD_DIM_MAX+1];
int
sizeIn, sizeOut, /* lengths of input and output vectors */
dotLen, /* # input samples to dot with weights to get
one output sample */
doRound, /* actually do rounding on output: we DO NOT
round when info->round but the output
type is not integral */
*index; /* dotLen*sizeOut 2D array of input indices */
size_t
I, /* swiss-army int */
strideIn, /* the stride between samples in the input
"scanline" being resampled */
strideOut, /* stride between samples in output
"scanline" from resampling */
L, LI, LO, numLines, /* top secret */
numOut; /* # of _samples_, total, in output volume;
this is for allocating the output */
airArray *mop; /* for cleaning up */
if (!(nout && nin && info)) {
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdBoundaryUnknown == info->boundary) {
sprintf(err, "%s: need to specify a boundary behavior", me);
biffAdd(NRRD, err); return 1;
}
typeIn = nin->type;
typeOut = nrrdTypeDefault == info->type ? typeIn : info->type;
if (_nrrdResampleCheckInfo(nin, info)) {
sprintf(err, "%s: problem with arguments", me);
biffAdd(NRRD, err); return 1;
}
_nrrdResampleComputePermute(permute, ax, sz,
&topRax, &botRax, &passes,
nin, info);
topLax = topRax ? 0 : 1;
/* not sure where else to put this:
(want to put it before 0 == passes branch)
We have to assume some centering when doing resampling, and it would
be stupid to not record it in the outgoing nrrd, since the value of
nrrdDefaultCenter could always change. */
for (ai=0; ai<nin->dim; ai++) {
if (info->kernel[ai]) {
nout->axis[ai].center = _nrrdCenter(nin->axis[ai].center);
}
}
if (0 == passes) {
/* actually, no resampling was desired. Copy input to output,
but with the clamping that we normally do at the end of resampling */
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, sz[0]);
if (nrrdMaybeAlloc_nva(nout, typeOut, nin->dim, sz[0])) {
sprintf(err, "%s: couldn't allocate output", me);
biffAdd(NRRD, err); return 1;
}
numOut = nrrdElementNumber(nout);
for (I=0; I<numOut; I++) {
tmpF = nrrdDLookup[nin->type](nin->data, I);
tmpF = nrrdDClamp[typeOut](tmpF);
nrrdDInsert[typeOut](nout->data, I, tmpF);
}
nrrdAxisInfoCopy(nout, nin, NULL, NRRD_AXIS_INFO_NONE);
/* HEY: need to create textual representation of resampling parameters */
if (nrrdContentSet_va(nout, func, nin, "")) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
return 0;
}
mop = airMopNew();
/* convert input nrrd to nrrdResample_t if necessary */
if (nrrdResample_nrrdType != typeIn) {
if (nrrdConvert(floatNin = nrrdNew(), nin, nrrdResample_nrrdType)) {
sprintf(err, "%s: couldn't create float copy of input", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
array[0] = (nrrdResample_t*)floatNin->data;
airMopAdd(mop, floatNin, (airMopper)nrrdNuke, airMopAlways);
} else {
floatNin = NULL;
array[0] = (nrrdResample_t*)nin->data;
}
/* compute strideIn; this is actually the same for every pass
because (strictly speaking) in every pass we are resampling
the same axis, and axes with lower indices are constant length */
strideIn = 1;
for (ai=0; ai<(unsigned int)topRax; ai++) { /* HEY scrutinize casts */
strideIn *= nin->axis[ai].size;
}
/*
printf("%s: strideIn = " _AIR_SIZE_T_CNV "\n", me, strideIn);
*/
/* go! */
for (pi=0; pi<passes; pi++) {
/*
printf("%s: --- pass %d --- \n", me, pi);
*/
numLines = strideOut = 1;
for (ai=0; ai<nin->dim; ai++) {
if (ai < (unsigned int)botRax) { /* HEY scrutinize cast */
strideOut *= sz[pi+1][ai];
}
if (ai != (unsigned int)topRax) { /* HEY scrutinize cast */
numLines *= sz[pi][ai];
}
}
sizeIn = sz[pi][topRax];
sizeOut = sz[pi+1][botRax];
numOut = numLines*sizeOut;
/* for the rest of the loop body, d is the original "dimension"
for the axis being resampled */
ai = ax[pi][topRax];
/*
printf("%s(%d): numOut = " _AIR_SIZE_T_CNV "\n", me, pi, numOut);
printf("%s(%d): numLines = " _AIR_SIZE_T_CNV "\n", me, pi, numLines);
printf("%s(%d): stride: In=%d, Out=%d\n", me, pi,
(int)strideIn, (int)strideOut);
printf("%s(%d): sizeIn = %d\n", me, pi, sizeIn);
printf("%s(%d): sizeOut = %d\n", me, pi, sizeOut);
*/
/* we can free the input to the previous pass
(if its not the given data) */
if (pi > 0) {
if (pi == 1) {
if (array[0] != nin->data) {
airMopSub(mop, floatNin, (airMopper)nrrdNuke);
floatNin = nrrdNuke(floatNin);
array[0] = NULL;
/*
printf("%s: pi %d: freeing array[0]\n", me, pi);
*/
}
} else {
airMopSub(mop, array[pi-1], airFree);
array[pi-1] = (nrrdResample_t*)airFree(array[pi-1]);
/*
printf("%s: pi %d: freeing array[%d]\n", me, pi, pi-1);
*/
}
}
/* allocate output volume */
array[pi+1] = (nrrdResample_t*)calloc(numOut, sizeof(nrrdResample_t));
if (!array[pi+1]) {
sprintf(err, "%s: couldn't create array of " _AIR_SIZE_T_CNV
" nrrdResample_t's for output of pass %d",
me, numOut, pi);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
airMopAdd(mop, array[pi+1], airFree, airMopAlways);
/*
printf("%s: allocated array[%d]\n", me, pi+1);
*/
/* allocate contiguous input scanline buffer, we alloc one more
than needed to provide a place for the pad value. That is, in
fact, the over-riding reason to copy a scanline to a local
array: so that there is a simple consistent (non-branchy) way
to incorporate the pad values */
inVec = (nrrdResample_t *)calloc(sizeIn+1, sizeof(nrrdResample_t));
airMopAdd(mop, inVec, airFree, airMopAlways);
inVec[sizeIn] = AIR_CAST(nrrdResample_t, info->padValue);
dotLen = _nrrdResampleMakeWeightIndex(&weight, &index, &ratio,
nin, info, ai);
if (!dotLen) {
sprintf(err, "%s: trouble creating weight and index vector arrays", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
ratios[ai] = ratio;
airMopAdd(mop, weight, airFree, airMopAlways);
airMopAdd(mop, index, airFree, airMopAlways);
/* the skinny: resample all the scanlines */
_inVec = array[pi];
_outVec = array[pi+1];
memset(ci, 0, (NRRD_DIM_MAX+1)*sizeof(int));
memset(co, 0, (NRRD_DIM_MAX+1)*sizeof(int));
for (L=0; L<numLines; L++) {
/* calculate the index to get to input and output scanlines,
according the coordinates of the start of the scanline */
NRRD_INDEX_GEN(LI, ci, sz[pi], nin->dim);
NRRD_INDEX_GEN(LO, co, sz[pi+1], nin->dim);
_inVec = array[pi] + LI;
_outVec = array[pi+1] + LO;
/* read input scanline into contiguous array */
for (i=0; i<sizeIn; i++) {
inVec[i] = _inVec[i*strideIn];
}
/* do the weighting */
for (i=0; i<sizeOut; i++) {
tmpF = 0.0;
/*
fprintf(stderr, "%s: i = %d (tmpF=0)\n", me, (int)i);
*/
for (s=0; s<dotLen; s++) {
tmpF += inVec[index[s + dotLen*i]]*weight[s + dotLen*i];
/*
fprintf(stderr, " tmpF += %g*%g == %g\n",
inVec[index[s + dotLen*i]], weight[s + dotLen*i], tmpF);
*/
}
_outVec[i*strideOut] = tmpF;
/*
fprintf(stderr, "--> out[%d] = %g\n",
i*strideOut, _outVec[i*strideOut]);
*/
}
/* update the coordinates for the scanline starts. We don't
use the usual NRRD_COORD macros because we're subject to
the unusual constraint that ci[topRax] and co[permute[topRax]]
must stay exactly zero */
e = topLax;
ci[e]++;
co[permute[e]]++;
while (L < numLines-1 && ci[e] == sz[pi][e]) {
ci[e] = co[permute[e]] = 0;
e++;
e += e == topRax;
ci[e]++;
co[permute[e]]++;
}
}
/* pass-specific clean up */
airMopSub(mop, weight, airFree);
airMopSub(mop, index, airFree);
airMopSub(mop, inVec, airFree);
weight = (nrrdResample_t*)airFree(weight);
index = (int*)airFree(index);
inVec = (nrrdResample_t*)airFree(inVec);
}
/* clean up second-to-last array and scanline buffers */
if (passes > 1) {
airMopSub(mop, array[passes-1], airFree);
array[passes-1] = (nrrdResample_t*)airFree(array[passes-1]);
/*
printf("%s: now freeing array[%d]\n", me, passes-1);
*/
} else if (array[passes-1] != nin->data) {
airMopSub(mop, floatNin, (airMopper)nrrdNuke);
floatNin = nrrdNuke(floatNin);
}
array[passes-1] = NULL;
/* create output nrrd and set axis info */
if (nrrdMaybeAlloc_nva(nout, typeOut, nin->dim, sz[passes])) {
sprintf(err, "%s: couldn't allocate final output nrrd", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
airMopAdd(mop, nout, (airMopper)nrrdNuke, airMopOnError);
nrrdAxisInfoCopy(nout, nin, NULL,
(NRRD_AXIS_INFO_SIZE_BIT
| NRRD_AXIS_INFO_MIN_BIT
| NRRD_AXIS_INFO_MAX_BIT
| NRRD_AXIS_INFO_SPACING_BIT
| NRRD_AXIS_INFO_SPACEDIRECTION_BIT /* see below */
| NRRD_AXIS_INFO_THICKNESS_BIT
| NRRD_AXIS_INFO_KIND_BIT));
for (ai=0; ai<nin->dim; ai++) {
if (info->kernel[ai]) {
/* we do resample this axis */
nout->axis[ai].spacing = nin->axis[ai].spacing/ratios[ai];
/* no way to usefully update thickness: we could be doing blurring
but maintaining the number of samples: thickness increases, or
we could be downsampling, in which the relationship between the
sampled and the skipped regions of space becomes complicated:
no single scalar can represent it, or we could be upsampling,
in which the notion of "skip" could be rendered meaningless */
nout->axis[ai].thickness = AIR_NAN;
nout->axis[ai].min = info->min[ai];
nout->axis[ai].max = info->max[ai];
/*
HEY: this is currently a bug: all this code was written long
before there were space directions, so min/max are always
set, regardless of whethere there are incoming space directions
which then disallows output space directions on the same axes
_nrrdSpaceVecScale(nout->axis[ai].spaceDirection,
1.0/ratios[ai], nin->axis[ai].spaceDirection);
*/
nout->axis[ai].kind = _nrrdKindAltered(nin->axis[ai].kind, AIR_TRUE);
} else {
/* this axis remains untouched */
nout->axis[ai].min = nin->axis[ai].min;
nout->axis[ai].max = nin->axis[ai].max;
nout->axis[ai].spacing = nin->axis[ai].spacing;
nout->axis[ai].thickness = nin->axis[ai].thickness;
nout->axis[ai].kind = nin->axis[ai].kind;
}
}
/* HEY: need to create textual representation of resampling parameters */
if (nrrdContentSet_va(nout, func, nin, "")) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
/* copy the resampling final result into the output nrrd, maybe
rounding as we go to make sure that 254.9999 is saved as 255
in uchar output, and maybe clamping as we go to insure that
integral results don't have unexpected wrap-around. */
if (info->round) {
if (nrrdTypeInt == typeOut ||
nrrdTypeUInt == typeOut ||
nrrdTypeLLong == typeOut ||
nrrdTypeULLong == typeOut) {
fprintf(stderr, "%s: WARNING: possible erroneous output with "
"rounding of %s output type due to int-based implementation "
"of rounding\n", me, airEnumStr(nrrdType, typeOut));
}
doRound = nrrdTypeIsIntegral[typeOut];
} else {
doRound = AIR_FALSE;
}
numOut = nrrdElementNumber(nout);
for (I=0; I<numOut; I++) {
tmpF = array[passes][I];
if (doRound) {
tmpF = AIR_CAST(nrrdResample_t, AIR_ROUNDUP(tmpF));
}
if (info->clamp) {
tmpF = nrrdDClamp[typeOut](tmpF);
}
nrrdDInsert[typeOut](nout->data, I, tmpF);
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
/* enough already */
airMopOkay(mop);
return 0;
}
/*
******** nrrdInset()
**
** (opposite of nrrdCrop()) replace some sub-volume inside a nrrd with
** another given nrrd.
**
*/
int
nrrdInset(Nrrd *nout, const Nrrd *nin, const Nrrd *nsub, const size_t *min) {
char me[]="nrrdInset", func[] = "inset", err[BIFF_STRLEN],
buff1[NRRD_DIM_MAX*30], buff2[AIR_STRLEN_SMALL];
unsigned int ai;
size_t I,
lineSize, /* #bytes in one scanline to be copied */
typeSize, /* size of data type */
cIn[NRRD_DIM_MAX], /* coords for line start, in input */
cOut[NRRD_DIM_MAX], /* coords for line start, in output */
szIn[NRRD_DIM_MAX],
szOut[NRRD_DIM_MAX],
idxIn, idxOut, /* linear indices for input and output */
numLines; /* number of scanlines in output nrrd */
char *dataIn, *dataOut, *subCont;
/* errors */
if (!(nout && nin && nsub && min)) {
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err); return 1;
}
if (nout == nsub) {
sprintf(err, "%s: nout==nsub disallowed", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdCheck(nin)) {
sprintf(err, "%s: input not valid nrrd", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdCheck(nsub)) {
sprintf(err, "%s: subvolume not valid nrrd", me);
biffAdd(NRRD, err); return 1;
}
if (!( nin->dim == nsub->dim )) {
sprintf(err, "%s: input's dim (%d) != subvolume's dim (%d)",
me, nin->dim, nsub->dim);
biffAdd(NRRD, err); return 1;
}
if (!( nin->type == nsub->type )) {
sprintf(err, "%s: input's type (%s) != subvolume's type (%s)", me,
airEnumStr(nrrdType, nin->type),
airEnumStr(nrrdType, nsub->type));
biffAdd(NRRD, err); return 1;
}
if (nrrdTypeBlock == nin->type) {
if (!( nin->blockSize == nsub->blockSize )) {
sprintf(err, "%s: input's blockSize (" _AIR_SIZE_T_CNV
") != subvolume's blockSize (" _AIR_SIZE_T_CNV ")",
me, nin->blockSize, nsub->blockSize);
biffAdd(NRRD, err); return 1;
}
}
for (ai=0; ai<nin->dim; ai++) {
if (!( min[ai] + nsub->axis[ai].size - 1 <= nin->axis[ai].size - 1)) {
sprintf(err, "%s: axis %d range of inset indices [" _AIR_SIZE_T_CNV
"," _AIR_SIZE_T_CNV "] not within "
"input indices [0," _AIR_SIZE_T_CNV "]", me, ai,
min[ai], min[ai] + nsub->axis[ai].size - 1,
nin->axis[ai].size - 1);
biffAdd(NRRD, err); return 1;
}
}
if (nout != nin) {
if (nrrdCopy(nout, nin)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
}
/* else we're going to inset in place */
/* WARNING: following code copied/modified from nrrdCrop(),
so the meanings of "in"/"out", "src"/"dest" are all messed up */
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, szIn);
nrrdAxisInfoGet_nva(nsub, nrrdAxisInfoSize, szOut);
numLines = 1;
for (ai=1; ai<nin->dim; ai++) {
numLines *= szOut[ai];
}
lineSize = szOut[0]*nrrdElementSize(nin);
/* the skinny */
typeSize = nrrdElementSize(nin);
dataIn = (char *)nout->data;
dataOut = (char *)nsub->data;
for (ai=0; ai<NRRD_DIM_MAX; ai++) {
cOut[ai] = 0;
}
for (I=0; I<numLines; I++) {
for (ai=0; ai<nin->dim; ai++) {
cIn[ai] = cOut[ai] + min[ai];
}
NRRD_INDEX_GEN(idxOut, cOut, szOut, nin->dim);
NRRD_INDEX_GEN(idxIn, cIn, szIn, nin->dim);
memcpy(dataIn + idxIn*typeSize, dataOut + idxOut*typeSize, lineSize);
/* the lowest coordinate in cOut[] will stay zero, since we are
copying one (1-D) scanline at a time */
NRRD_COORD_INCR(cOut, szOut, nin->dim, 1);
}
/* HEY: before Teem version 2.0 figure out nrrdKind stuff here */
strcpy(buff1, "[");
for (ai=0; ai<nin->dim; ai++) {
sprintf(buff2, "%s" _AIR_SIZE_T_CNV, (ai ? "," : ""), min[ai]);
strcat(buff1, buff2);
}
strcat(buff1, "]");
subCont = _nrrdContentGet(nsub);
if (nrrdContentSet_va(nout, func, nin, "%s,%s", subCont, buff1)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); free(subCont); return 1;
}
free(subCont);
/* basic info copied by nrrdCopy above */
return 0;
}
/*
******** nrrdCrop()
**
** select some sub-volume inside a given nrrd, producing an output
** nrrd with the same dimensions, but with equal or smaller sizes
** along each axis.
*/
int
nrrdCrop(Nrrd *nout, const Nrrd *nin, size_t *min, size_t *max)
{
char me[]="nrrdCrop", func[] = "crop", err[BIFF_STRLEN],
buff1[NRRD_DIM_MAX*30], buff2[AIR_STRLEN_SMALL];
unsigned int ai;
size_t I,
lineSize, /* #bytes in one scanline to be copied */
typeSize, /* size of data type */
cIn[NRRD_DIM_MAX], /* coords for line start, in input */
cOut[NRRD_DIM_MAX], /* coords for line start, in output */
szIn[NRRD_DIM_MAX],
szOut[NRRD_DIM_MAX],
idxIn=0, idxOut=0, /* linear indices for input and output */
numLines; /* number of scanlines in output nrrd */
char *dataIn, *dataOut;
/* errors */
if (!(nout && nin && min && max))
{
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err);
return 1;
}
if (nout == nin)
{
sprintf(err, "%s: nout==nin disallowed", me);
biffAdd(NRRD, err);
return 1;
}
for (ai=0; ai<nin->dim; ai++)
{
if (!(min[ai] <= max[ai]))
{
sprintf(err, "%s: axis %d min (" _AIR_SIZE_T_CNV
") not <= max (" _AIR_SIZE_T_CNV ")",
me, ai, min[ai], max[ai]);
biffAdd(NRRD, err);
return 1;
}
if (!( min[ai] < nin->axis[ai].size && max[ai] < nin->axis[ai].size ))
{
sprintf(err, "%s: axis %d min (" _AIR_SIZE_T_CNV
") or max (" _AIR_SIZE_T_CNV ") out of bounds [0,"
_AIR_SIZE_T_CNV "]",
me, ai, min[ai], max[ai], nin->axis[ai].size-1);
biffAdd(NRRD, err);
return 1;
}
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(nin))
{
sprintf(err, "%s: nrrd reports zero element size!", me);
biffAdd(NRRD, err);
return 1;
}
/* allocate */
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, szIn);
numLines = 1;
for (ai=0; ai<nin->dim; ai++)
{
szOut[ai] = max[ai] - min[ai] + 1;
if (ai)
{
numLines *= szOut[ai];
}
}
nout->blockSize = nin->blockSize;
if (nrrdMaybeAlloc_nva(nout, nin->type, nin->dim, szOut))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
lineSize = szOut[0]*nrrdElementSize(nin);
/* the skinny */
typeSize = nrrdElementSize(nin);
dataIn = (char *)nin->data;
dataOut = (char *)nout->data;
memset(cOut, 0, NRRD_DIM_MAX*sizeof(unsigned int));
/*
printf("!%s: nin->dim = %d\n", me, nin->dim);
printf("!%s: min = %d %d %d\n", me, min[0], min[1], min[2]);
printf("!%s: szIn = %d %d %d\n", me, szIn[0], szIn[1], szIn[2]);
printf("!%s: szOut = %d %d %d\n", me, szOut[0], szOut[1], szOut[2]);
printf("!%s: lineSize = %d\n", me, lineSize);
printf("!%s: typeSize = %d\n", me, typeSize);
printf("!%s: numLines = %d\n", me, (int)numLines);
*/
for (I=0; I<numLines; I++)
{
for (ai=0; ai<nin->dim; ai++)
{
cIn[ai] = cOut[ai] + min[ai];
}
NRRD_INDEX_GEN(idxOut, cOut, szOut, nin->dim);
NRRD_INDEX_GEN(idxIn, cIn, szIn, nin->dim);
/*
printf("!%s: %5d: cOut=(%3d,%3d,%3d) --> idxOut = %5d\n",
me, (int)I, cOut[0], cOut[1], cOut[2], (int)idxOut);
printf("!%s: %5d: cIn=(%3d,%3d,%3d) --> idxIn = %5d\n",
me, (int)I, cIn[0], cIn[1], cIn[2], (int)idxIn);
*/
memmove(dataOut + idxOut*typeSize, dataIn + idxIn*typeSize, lineSize);
/* the lowest coordinate in cOut[] will stay zero, since we are
copying one (1-D) scanline at a time */
NRRD_COORD_INCR(cOut, szOut, nin->dim, 1);
}
if (nrrdAxisInfoCopy(nout, nin, NULL, (NRRD_AXIS_INFO_SIZE_BIT |
NRRD_AXIS_INFO_MIN_BIT |
NRRD_AXIS_INFO_MAX_BIT )))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
for (ai=0; ai<nin->dim; ai++)
{
nrrdAxisInfoPosRange(&(nout->axis[ai].min), &(nout->axis[ai].max),
nin, ai, min[ai], max[ai]);
/* do the safe thing first */
nout->axis[ai].kind = _nrrdKindAltered(nin->axis[ai].kind, AIR_FALSE);
/* try cleverness */
if (!nrrdStateKindNoop)
{
if (nout->axis[ai].size == nin->axis[ai].size)
{
/* we can safely copy kind; the samples didn't change */
nout->axis[ai].kind = nin->axis[ai].kind;
}
else if (nrrdKind4Color == nin->axis[ai].kind
&& 3 == szOut[ai])
{
nout->axis[ai].kind = nrrdKind3Color;
}
else if (nrrdKind4Vector == nin->axis[ai].kind
&& 3 == szOut[ai])
{
nout->axis[ai].kind = nrrdKind3Vector;
}
else if ((nrrdKind4Vector == nin->axis[ai].kind
|| nrrdKind3Vector == nin->axis[ai].kind)
&& 2 == szOut[ai])
{
nout->axis[ai].kind = nrrdKind2Vector;
}
else if (nrrdKindRGBAColor == nin->axis[ai].kind
&& 0 == min[ai]
&& 2 == max[ai])
{
nout->axis[ai].kind = nrrdKindRGBColor;
}
else if (nrrdKind2DMaskedSymMatrix == nin->axis[ai].kind
&& 1 == min[ai]
&& max[ai] == szIn[ai]-1)
{
nout->axis[ai].kind = nrrdKind2DSymMatrix;
}
else if (nrrdKind2DMaskedMatrix == nin->axis[ai].kind
&& 1 == min[ai]
&& max[ai] == szIn[ai]-1)
{
nout->axis[ai].kind = nrrdKind2DMatrix;
}
else if (nrrdKind3DMaskedSymMatrix == nin->axis[ai].kind
&& 1 == min[ai]
&& max[ai] == szIn[ai]-1)
{
nout->axis[ai].kind = nrrdKind3DSymMatrix;
}
else if (nrrdKind3DMaskedMatrix == nin->axis[ai].kind
&& 1 == min[ai]
&& max[ai] == szIn[ai]-1)
{
nout->axis[ai].kind = nrrdKind3DMatrix;
}
}
}
strcpy(buff1, "");
for (ai=0; ai<nin->dim; ai++)
{
sprintf(buff2, "%s[" _AIR_SIZE_T_CNV "," _AIR_SIZE_T_CNV "]",
(ai ? "x" : ""), min[ai], max[ai]);
strcat(buff1, buff2);
}
if (nrrdContentSet_va(nout, func, nin, "%s", buff1))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_SPACEORIGIN_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT)))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
/* copy origin, then shift it along the spatial axes */
_nrrdSpaceVecCopy(nout->spaceOrigin, nin->spaceOrigin);
for (ai=0; ai<nin->dim; ai++)
{
if (AIR_EXISTS(nin->axis[ai].spaceDirection[0]))
{
_nrrdSpaceVecScaleAdd2(nout->spaceOrigin,
1.0, nout->spaceOrigin,
min[ai], nin->axis[ai].spaceDirection);
}
}
return 0;
}
/*
******** nrrdHistoAxis
**
** replace scanlines along one scanline with a histogram of the scanline
**
** this looks at nin->min and nin->max to see if they are both non-NaN.
** If so, it uses these as the range of the histogram, otherwise it
** finds the min and max present in the volume
**
** By its very nature, and by the simplicity of this implemention,
** this can be a slow process due to terrible memory locality. User
** may want to permute axes before and after this, but that can be
** slow too...
*/
int
nrrdHistoAxis(Nrrd *nout, const Nrrd *nin, const NrrdRange *_range,
unsigned int hax, size_t bins, int type) {
static const char me[]="nrrdHistoAxis", func[]="histax";
int map[NRRD_DIM_MAX];
unsigned int ai, hidx;
size_t szIn[NRRD_DIM_MAX], szOut[NRRD_DIM_MAX], size[NRRD_DIM_MAX],
coordIn[NRRD_DIM_MAX], coordOut[NRRD_DIM_MAX];
size_t I, hI, num;
double val, count;
airArray *mop;
NrrdRange *range;
if (!(nin && nout)) {
biffAddf(NRRD, "%s: got NULL pointer", me);
return 1;
}
if (nout == nin) {
biffAddf(NRRD, "%s: nout==nin disallowed", me);
return 1;
}
if (!(bins > 0)) {
biffAddf(NRRD, "%s: bins value (" _AIR_SIZE_T_CNV ") invalid", me, bins);
return 1;
}
if (airEnumValCheck(nrrdType, type) || nrrdTypeBlock == type) {
biffAddf(NRRD, "%s: invalid nrrd type %d", me, type);
return 1;
}
if (!( hax <= nin->dim-1 )) {
biffAddf(NRRD, "%s: axis %d is not in range [0,%d]",
me, hax, nin->dim-1);
return 1;
}
mop = airMopNew();
if (_range) {
range = nrrdRangeCopy(_range);
nrrdRangeSafeSet(range, nin, nrrdBlind8BitRangeState);
} else {
range = nrrdRangeNewSet(nin, nrrdBlind8BitRangeState);
}
airMopAdd(mop, range, (airMopper)nrrdRangeNix, airMopAlways);
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, size);
size[hax] = bins;
if (nrrdMaybeAlloc_nva(nout, type, nin->dim, size)) {
biffAddf(NRRD, "%s: failed to alloc output nrrd", me);
airMopError(mop); return 1;
}
/* copy axis information */
for (ai=0; ai<nin->dim; ai++) {
map[ai] = ai != hax ? (int)ai : -1;
}
nrrdAxisInfoCopy(nout, nin, map, NRRD_AXIS_INFO_NONE);
/* axis hax now has to be set manually */
nout->axis[hax].size = bins;
nout->axis[hax].spacing = AIR_NAN; /* min and max convey the information */
nout->axis[hax].thickness = AIR_NAN;
nout->axis[hax].min = range->min;
nout->axis[hax].max = range->max;
nout->axis[hax].center = nrrdCenterCell;
if (nin->axis[hax].label) {
nout->axis[hax].label = (char *)calloc(strlen("histax()")
+ strlen(nin->axis[hax].label)
+ 1, sizeof(char));
if (nout->axis[hax].label) {
sprintf(nout->axis[hax].label, "histax(%s)", nin->axis[hax].label);
} else {
biffAddf(NRRD, "%s: couldn't allocate output label", me);
airMopError(mop); return 1;
}
} else {
nout->axis[hax].label = NULL;
}
if (!nrrdStateKindNoop) {
nout->axis[hax].kind = nrrdKindDomain;
}
/* the skinny: we traverse the input samples in linear order, and
increment the bin in the histogram for the scanline we're in.
This is not terribly clever, and the memory locality is a
disaster */
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, szIn);
nrrdAxisInfoGet_nva(nout, nrrdAxisInfoSize, szOut);
memset(coordIn, 0, NRRD_DIM_MAX*sizeof(size_t));
num = nrrdElementNumber(nin);
for (I=0; I<num; I++) {
/* get input nrrd value and compute its histogram index */
val = nrrdDLookup[nin->type](nin->data, I);
if (AIR_EXISTS(val) && AIR_IN_CL(range->min, val, range->max)) {
hidx = airIndex(range->min, val, range->max, AIR_CAST(unsigned int, bins));
memcpy(coordOut, coordIn, nin->dim*sizeof(size_t));
coordOut[hax] = (unsigned int)hidx;
NRRD_INDEX_GEN(hI, coordOut, szOut, nout->dim);
count = nrrdDLookup[nout->type](nout->data, hI);
count = nrrdDClamp[nout->type](count + 1);
nrrdDInsert[nout->type](nout->data, hI, count);
}
NRRD_COORD_INCR(coordIn, szIn, nin->dim, 0);
}
/*
******** nrrdShuffle
**
** rearranges hyperslices of a nrrd along a given axis according to
** given permutation. This could be used to on a 4D array,
** representing a 3D volume of vectors, to re-order the vector
** components.
**
** the given permutation array must allocated for at least as long as
** the input nrrd along the chosen axis. perm[j] = i means that the
** value at position j in the _new_ array should come from position i
** in the _old_array. The standpoint is from the new, looking at
** where to find the values amid the old array (perm answers "what do
** I put here", not "where do I put this"). This allows multiple
** positions in the new array to copy from the same old position, and
** insures that there is an source for all positions along the new
** array.
*/
int
nrrdShuffle(Nrrd *nout, const Nrrd *nin, unsigned int axis,
const size_t *perm) {
static const char me[]="nrrdShuffle", func[]="shuffle";
char buff2[AIR_STRLEN_SMALL];
/* Sun Feb 8 13:13:58 CST 2009: There was a memory bug here caused
by using the same buff1[NRRD_DIM_MAX*30] declaration that had
worked fine for nrrdAxesPermute and nrrdReshape, but does NOT
work here because now samples along an axes are re-ordered, not
axes, so its often not allocated for long enough to hold the
string that's printed to it. Ideally there'd be another argument
that says whether to document the shuffle in the content string,
which would mean an API change. Or, we can use a secret
heuristic (or maybe later a nrrdState variable) for determining
when an axis is short enough to make documenting the shuffle
interesting. This is useful since functions like nrrdFlip()
probably do *not* need the shuffle (the sample reversal) to be
documented for long axes */
#define LONGEST_INTERESTING_AXIS 42
char buff1[LONGEST_INTERESTING_AXIS*30];
unsigned int ai, ldim, len;
size_t idxInB=0, idxOut, lineSize, numLines, size[NRRD_DIM_MAX], *lsize,
cIn[NRRD_DIM_MAX+1], cOut[NRRD_DIM_MAX+1];
char *dataIn, *dataOut;
if (!(nin && nout && perm)) {
biffAddf(NRRD, "%s: got NULL pointer", me);
return 1;
}
if (nout == nin) {
biffAddf(NRRD, "%s: nout==nin disallowed", me);
return 1;
}
if (!( axis < nin->dim )) {
biffAddf(NRRD, "%s: axis %d outside valid range [0,%d]",
me, axis, nin->dim-1);
return 1;
}
len = AIR_CAST(unsigned int, nin->axis[axis].size);
for (ai=0; ai<len; ai++) {
if (!( perm[ai] < len )) {
char stmp[AIR_STRLEN_SMALL];
biffAddf(NRRD, "%s: perm[%d] (%s) outside valid range [0,%d]", me, ai,
airSprintSize_t(stmp, perm[ai]), len-1);
return 1;
}
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(nin)) {
biffAddf(NRRD, "%s: nrrd reports zero element size!", me);
return 1;
}
/* set information in new volume */
nout->blockSize = nin->blockSize;
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, size);
if (nrrdMaybeAlloc_nva(nout, nin->type, nin->dim, size)) {
biffAddf(NRRD, "%s: failed to allocate output", me);
return 1;
}
if (nrrdAxisInfoCopy(nout, nin, NULL, NRRD_AXIS_INFO_NONE)) {
biffAddf(NRRD, "%s:", me);
return 1;
}
/* the min and max along the shuffled axis are now meaningless */
nout->axis[axis].min = nout->axis[axis].max = AIR_NAN;
/* do the safe thing first */
nout->axis[axis].kind = _nrrdKindAltered(nin->axis[axis].kind, AIR_FALSE);
/* try cleverness */
if (!nrrdStateKindNoop) {
if (0 == nrrdKindSize(nin->axis[axis].kind)
|| nrrdKindStub == nin->axis[axis].kind
|| nrrdKindScalar == nin->axis[axis].kind
|| nrrdKind2Vector == nin->axis[axis].kind
|| nrrdKind3Color == nin->axis[axis].kind
|| nrrdKind4Color == nin->axis[axis].kind
|| nrrdKind3Vector == nin->axis[axis].kind
|| nrrdKind3Gradient == nin->axis[axis].kind
|| nrrdKind3Normal == nin->axis[axis].kind
|| nrrdKind4Vector == nin->axis[axis].kind) {
/* these kinds have no intrinsic ordering */
nout->axis[axis].kind = nin->axis[axis].kind;
}
}
/* the skinny */
lineSize = 1;
for (ai=0; ai<axis; ai++) {
lineSize *= nin->axis[ai].size;
}
numLines = nrrdElementNumber(nin)/lineSize;
lineSize *= nrrdElementSize(nin);
lsize = size + axis;
ldim = nin->dim - axis;
dataIn = AIR_CAST(char *, nin->data);
dataOut = AIR_CAST(char *, nout->data);
memset(cIn, 0, sizeof(cIn));
memset(cOut, 0, sizeof(cOut));
for (idxOut=0; idxOut<numLines; idxOut++) {
memcpy(cIn, cOut, sizeof(cIn));
cIn[0] = perm[cOut[0]];
NRRD_INDEX_GEN(idxInB, cIn, lsize, ldim);
NRRD_INDEX_GEN(idxOut, cOut, lsize, ldim);
memcpy(dataOut + idxOut*lineSize, dataIn + idxInB*lineSize, lineSize);
NRRD_COORD_INCR(cOut, lsize, ldim, 0);
}
/* Set content. The LONGEST_INTERESTING_AXIS hack avoids the
previous array out-of-bounds bug */
if (len <= LONGEST_INTERESTING_AXIS) {
strcpy(buff1, "");
for (ai=0; ai<len; ai++) {
char stmp[AIR_STRLEN_SMALL];
sprintf(buff2, "%s%s", (ai ? "," : ""), airSprintSize_t(stmp, perm[ai]));
strcat(buff1, buff2);
}
if (nrrdContentSet_va(nout, func, nin, "%s", buff1)) {
biffAddf(NRRD, "%s:", me);
return 1;
}
} else {
if (nrrdContentSet_va(nout, func, nin, "")) {
biffAddf(NRRD, "%s:", me);
return 1;
}
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
biffAddf(NRRD, "%s:", me);
return 1;
}
return 0;
#undef LONGEST_INTERESTING_AXIS
}
/*
******** nrrdAxesPermute
**
** changes the scanline ordering of the data in a nrrd
**
** The basic means by which data is moved around is with memcpy().
** The goal is to call memcpy() as few times as possible, on memory
** segments as large as possible. Currently, this is done by
** detecting how many of the low-index axes are left untouched by
** the permutation- this constitutes a "scanline" which can be
** copied around as a unit. For permuting the y and z axes of a
** matrix-x-y-z order matrix volume, this optimization produced a
** factor of 5 speed up (exhaustive multi-platform tests, of course).
**
** The axes[] array determines the permutation of the axes.
** axis[i] = j means: axis i in the output will be the input's axis j
** (axis[i] answers: "what do I put here", from the standpoint of the output,
** not "where do I put this", from the standpoint of the input)
*/
int
nrrdAxesPermute(Nrrd *nout, const Nrrd *nin, const unsigned int *axes) {
static const char me[]="nrrdAxesPermute", func[]="permute";
char buff1[NRRD_DIM_MAX*30], buff2[AIR_STRLEN_SMALL];
size_t idxOut, idxInA=0, /* indices for input and output scanlines */
lineSize, /* size of block of memory which can be
moved contiguously from input to output,
thought of as a "scanline" */
numLines, /* how many "scanlines" there are to permute */
szIn[NRRD_DIM_MAX], *lszIn,
szOut[NRRD_DIM_MAX], *lszOut,
cIn[NRRD_DIM_MAX],
cOut[NRRD_DIM_MAX];
char *dataIn, *dataOut;
int axmap[NRRD_DIM_MAX];
unsigned int
ai, /* running index along dimensions */
lowPax, /* lowest axis which is "p"ermutated */
ldim, /* nin->dim - lowPax */
ip[NRRD_DIM_MAX+1], /* inverse of permutation in "axes" */
laxes[NRRD_DIM_MAX+1]; /* copy of axes[], but shifted down by lowPax
elements, to remove i such that i == axes[i] */
airArray *mop;
mop = airMopNew();
if (!(nin && nout && axes)) {
biffAddf(NRRD, "%s: got NULL pointer", me);
airMopError(mop); return 1;
}
/* we don't actually need ip[], computing it is for error checking */
if (nrrdInvertPerm(ip, axes, nin->dim)) {
biffAddf(NRRD, "%s: couldn't compute axis permutation inverse", me);
airMopError(mop); return 1;
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(nin)) {
biffAddf(NRRD, "%s: nrrd reports zero element size!", me);
airMopError(mop); return 1;
}
for (ai=0; ai<nin->dim && axes[ai] == ai; ai++)
;
lowPax = ai;
/* allocate output by initial copy */
if (nout != nin) {
if (nrrdCopy(nout, nin)) {
biffAddf(NRRD, "%s: trouble copying input", me);
airMopError(mop); return 1;
}
dataIn = (char*)nin->data;
} else {
dataIn = (char*)calloc(nrrdElementNumber(nin), nrrdElementSize(nin));
if (!dataIn) {
biffAddf(NRRD, "%s: couldn't create local copy of data", me);
airMopError(mop); return 1;
}
airMopAdd(mop, dataIn, airFree, airMopAlways);
memcpy(dataIn, nin->data, nrrdElementNumber(nin)*nrrdElementSize(nin));
}
if (lowPax < nin->dim) {
/* if lowPax == nin->dim, then we were given the identity permutation, so
there's nothing to do other than the copy already done. Otherwise,
here we are (actually, lowPax < nin->dim-1) */
for (ai=0; ai<nin->dim; ai++) {
axmap[ai] = AIR_INT(axes[ai]);
}
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, szIn);
if (nrrdAxisInfoCopy(nout, nin, axmap, NRRD_AXIS_INFO_NONE)) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
nrrdAxisInfoGet_nva(nout, nrrdAxisInfoSize, szOut);
/* the skinny */
lineSize = 1;
for (ai=0; ai<lowPax; ai++) {
lineSize *= szIn[ai];
}
numLines = nrrdElementNumber(nin)/lineSize;
lineSize *= nrrdElementSize(nin);
lszIn = szIn + lowPax;
lszOut = szOut + lowPax;
ldim = nin->dim - lowPax;
memset(laxes, 0, sizeof(laxes));
for (ai=0; ai<ldim; ai++) {
laxes[ai] = axes[ai+lowPax]-lowPax;
}
dataOut = AIR_CAST(char *, nout->data);
memset(cIn, 0, sizeof(cIn));
memset(cOut, 0, sizeof(cOut));
for (idxOut=0; idxOut<numLines; idxOut++) {
/* in our representation of the coordinates of the start of the
scanlines that we're copying, we are not even storing all the
zeros in the coordinates prior to lowPax, and when we go to
a linear index for the memcpy(), we multiply by lineSize */
for (ai=0; ai<ldim; ai++) {
cIn[laxes[ai]] = cOut[ai];
}
NRRD_INDEX_GEN(idxInA, cIn, lszIn, ldim);
memcpy(dataOut + idxOut*lineSize, dataIn + idxInA*lineSize, lineSize);
NRRD_COORD_INCR(cOut, lszOut, ldim, 0);
}
/* set content */
strcpy(buff1, "");
for (ai=0; ai<nin->dim; ai++) {
sprintf(buff2, "%s%d", (ai ? "," : ""), axes[ai]);
strcat(buff1, buff2);
}
if (nrrdContentSet_va(nout, func, nin, "%s", buff1)) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
if (nout != nin) {
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
}
}
airMopOkay(mop);
return 0;
}
