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/* |
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Teem: Tools to process and visualize scientific data and images . |
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Copyright (C) 2013, 2012, 2011, 2010, 2009 University of Chicago |
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Copyright (C) 2008, 2007, 2006, 2005 Gordon Kindlmann |
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Copyright (C) 2004, 2003, 2002, 2001, 2000, 1999, 1998 University of Utah |
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public License |
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(LGPL) as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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The terms of redistributing and/or modifying this software also |
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include exceptions to the LGPL that facilitate static linking. |
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public License |
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along with this library; if not, write to Free Software Foundation, Inc., |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "limn.h" |
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limnSplineTypeSpec * |
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limnSplineTypeSpecNew(int type, ...) { |
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static const char me[]="limnSplineTypeSpecNew"; |
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limnSplineTypeSpec *spec; |
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va_list ap; |
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if (airEnumValCheck(limnSplineType, type)) { |
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biffAddf(LIMN, "%s: given type %d not a valid limnSplineType", me, type); |
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return NULL; |
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} |
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spec = AIR_CALLOC(1, limnSplineTypeSpec); |
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spec->type = type; |
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va_start(ap, type); |
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if (limnSplineTypeBC == type) { |
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spec->B = va_arg(ap, double); |
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spec->C = va_arg(ap, double); |
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} |
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va_end(ap); |
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return spec; |
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} |
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limnSplineTypeSpec * |
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limnSplineTypeSpecNix(limnSplineTypeSpec *spec) { |
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airFree(spec); |
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return NULL; |
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} |
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/* |
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** _limnSplineTimeWarpSet |
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** |
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** implements GK's patented time warping technology |
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*/ |
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int |
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_limnSplineTimeWarpSet(limnSpline *spline) { |
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static const char me[]="_limnSplineTimeWarpSet"; |
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double *cpt, *time, ss; |
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int ii, N; |
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cpt = (double*)(spline->ncpt->data); |
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N = spline->ncpt->axis[2].size; |
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time = spline->time; |
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for (ii=0; ii<N; ii++) { |
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if (!AIR_EXISTS(time[ii])) { |
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biffAddf(LIMN, "%s: time[%d] doesn't exist", me, ii); |
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return 1; |
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} |
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if (ii && !(time[ii-1] < time[ii])) { |
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biffAddf(LIMN, "%s: time[%d] = %g not < time[%d] = %g", me, |
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ii-1, time[ii-1], ii, time[ii]); |
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return 1; |
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} |
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/* this will be used below */ |
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/* HEY: is there any way or reason to do any other kind of time warp? */ |
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cpt[1 + 3*ii] = ii; |
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} |
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for (ii=1; ii<N-1; ii++) { |
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ss = (cpt[1+3*(ii+1)] - cpt[1+3*(ii-1)])/(time[ii+1] - time[ii-1]); |
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cpt[0 + 3*ii] = ss*(time[ii] - time[ii-1]); |
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cpt[2 + 3*ii] = ss*(time[ii+1] - time[ii]); |
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} |
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if (spline->loop) { |
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ss = ((cpt[1+3*1] - cpt[1+3*0] + cpt[1+3*(N-1)] - cpt[1+3*(N-2)]) |
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/ (time[1] - time[0] + time[N-1] - time[N-2])); |
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cpt[2 + 3*0] = ss*(time[1] - time[0]); |
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cpt[0 + 3*(N-1)] = ss*(time[N-1] - time[N-2]); |
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} else { |
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cpt[2 + 3*0] = ((cpt[1+3*1] - cpt[1+3*0]) |
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* (time[1] - time[0])); |
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cpt[0 + 3*(N-1)] = ((cpt[1+3*(N-1)] - cpt[1+3*(N-2)]) |
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* (time[N-1] - time[N-2])); |
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} |
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/* |
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fprintf(stderr, "s[0]=%g, post = %g; s[1]=%g pre = %g\n", |
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cpt[1 + 3*0], cpt[2 + 3*0], cpt[1 + 3*1], cpt[0 + 3*1]); |
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*/ |
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return 0; |
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} |
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/* |
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******** limnSplineNew |
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** |
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** constructor for limnSplines. We take all the control point information |
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** here, and copy it internally, in an effort to simplify the management of |
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** state. The control point nrrd is 3-D, as explained in limn.h |
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** |
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** To confuse matters, the Time type of spline doesn't need the control |
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** point information in the traditional sense, but it still needs to know |
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** "when" the control points are. So, the _ncpt nrrd is still needed, but |
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** it is only a 1-D array of times. In this case, the internal ncpt values |
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** are set automatically. |
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** |
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** The benefit of this approach is that if this constructor returns |
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** successfully, then there is no more information or state that needs to |
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** be set-- the returned spline can be passed to evaluate or sample. |
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** LIES LIES LIES: For BC-splines, you still have to call limnSplineBCSet, |
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** but that's the only exception... |
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*/ |
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limnSpline * |
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limnSplineNew(Nrrd *_ncpt, int info, limnSplineTypeSpec *spec) { |
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static const char me[]="limnSplineNew"; |
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limnSpline *spline; |
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size_t N; |
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unsigned int size; |
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airArray *mop; |
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Nrrd *nin; |
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char stmp[2][AIR_STRLEN_SMALL]; |
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if (airEnumValCheck(limnSplineInfo, info)) { |
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biffAddf(LIMN, "%s: info %d not a valid limnSplineInfo", me, info); |
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return NULL; |
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} |
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if (nrrdCheck(_ncpt)) { |
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biffMovef(LIMN, NRRD, "%s: given nrrd has problems", me); |
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return NULL; |
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} |
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if (limnSplineTypeTimeWarp == spec->type) { |
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if (!(limnSplineInfoScalar == info)) { |
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biffAddf(LIMN, "%s: can only time warp scalars", me); |
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return NULL; |
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} |
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if (!( 1 == _ncpt->dim )) { |
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biffAddf(LIMN, "%s: given nrrd has dimension %d, not 1", me, _ncpt->dim); |
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return NULL; |
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} |
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N = _ncpt->axis[0].size; |
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} else { |
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if (!( 3 == _ncpt->dim )) { |
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biffAddf(LIMN, "%s: given nrrd has dimension %d, not 3", me, _ncpt->dim); |
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return NULL; |
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} |
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size = limnSplineInfoSize[info]; |
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if (!( size == _ncpt->axis[0].size && 3 == _ncpt->axis[1].size )) { |
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biffAddf(LIMN, "%s: expected %ux3xN nrrd, not %sx%sxN", me, size, |
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airSprintSize_t(stmp[0], _ncpt->axis[0].size), |
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airSprintSize_t(stmp[1], _ncpt->axis[1].size)); |
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return NULL; |
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} |
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N = _ncpt->axis[2].size; |
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} |
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if (1 == N) { |
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biffAddf(LIMN, "%s: need at least two control points", me); |
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return NULL; |
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} |
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mop = airMopNew(); |
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if (!( spline = AIR_CALLOC(1, limnSpline) )) { |
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biffAddf(LIMN, "%s: couldn't allocate new spline", me); |
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airMopError(mop); return NULL; |
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} |
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airMopAdd(mop, spline, (airMopper)limnSplineNix, airMopOnError); |
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spline->time = NULL; |
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spline->ncpt = NULL; |
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spline->type = spec->type; |
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spline->info = info; |
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spline->loop = AIR_FALSE; |
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spline->B = spec->B; |
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spline->C = spec->C; |
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nin = nrrdNew(); |
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airMopAdd(mop, nin, (airMopper)nrrdNuke, airMopOnError); |
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if (nrrdConvert(nin, _ncpt, nrrdTypeDouble)) { |
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biffMovef(LIMN, NRRD, "%s: trouble allocating internal nrrd", me); |
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airMopError(mop); return NULL; |
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} |
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if (limnSplineTypeTimeWarp == spec->type) { |
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/* set the time array to the data of the double-converted nin, |
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but the nin itself is scheduled to be nixed */ |
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airMopAdd(mop, nin, (airMopper)nrrdNix, airMopOnOkay); |
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spline->time = (double*)(nin->data); |
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/* now allocate the real control point information */ |
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spline->ncpt = nrrdNew(); |
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airMopAdd(mop, spline->ncpt, (airMopper)nrrdNuke, airMopOnError); |
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if (nrrdMaybeAlloc_va(spline->ncpt, nrrdTypeDouble, 3, |
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AIR_CAST(size_t, 1), |
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AIR_CAST(size_t, 3), |
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_ncpt->axis[0].size)) { |
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biffMovef(LIMN, NRRD, |
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"%s: trouble allocating real control points", me); |
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airMopError(mop); return NULL; |
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} |
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/* and set it all to something useful */ |
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if (_limnSplineTimeWarpSet(spline)) { |
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biffAddf(LIMN, "%s: trouble setting time warp", me); |
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airMopError(mop); return NULL; |
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} |
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} else { |
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/* we set the control point to the double-converted nin, and we're done */ |
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spline->ncpt = nin; |
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} |
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airMopOkay(mop); |
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return spline; |
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} |
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limnSpline * |
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limnSplineNix(limnSpline *spline) { |
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if (spline) { |
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spline->ncpt = (Nrrd *)nrrdNuke(spline->ncpt); |
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spline->time = (double *)airFree(spline->time); |
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airFree(spline); |
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} |
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return NULL; |
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} |
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/* |
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******** limnSplineNrrdCleverFix |
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** |
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** given that the ncpt nrrd for limnSplineNew() has to be a particular |
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** dimension and shape, and given that convenient ways of creating nrrds |
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** don't always lead to such configurations, we supply some minimal |
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** cleverness to bridge the gap. As the name implies, you should be |
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** wary of this function. |
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** |
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** The job of this function is NOT to check the validity of a nrrd for |
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** a given spline. That is up to limnSplineNew(). |
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** |
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** Currently, this function is used by limnHestSpline, but it probably |
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** won't be used anywhere else within limn. |
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** |
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** If requested, we also take a stab at guessing limnSplineInfo. |
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*/ |
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int |
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limnSplineNrrdCleverFix(Nrrd *nout, Nrrd *nin, int info, int type) { |
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static const char me[]="limnSplineNrrdCleverFix"; |
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ptrdiff_t min[3], max[3]; |
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size_t N; |
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unsigned int wantSize; |
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Nrrd *ntmpA, *ntmpB; |
258 |
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airArray *mop; |
259 |
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char stmp[AIR_STRLEN_SMALL]; |
260 |
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261 |
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if (!(nout && nin)) { |
262 |
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biffAddf(LIMN, "%s: got NULL pointer", me); |
263 |
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return 1; |
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} |
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if (airEnumValCheck(limnSplineInfo, info) |
266 |
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|| airEnumValCheck(limnSplineType, type)) { |
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biffAddf(LIMN, "%s: invalid spline info (%d) or type (%d)", |
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me, info, type); |
269 |
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return 1; |
270 |
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} |
271 |
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if (nrrdCheck(nin)) { |
272 |
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biffMovef(LIMN, NRRD, "%s: nrrd has problems", me); |
273 |
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return 1; |
274 |
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} |
275 |
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276 |
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mop = airMopNew(); |
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airMopAdd(mop, ntmpA=nrrdNew(), (airMopper)nrrdNuke, airMopAlways); |
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airMopAdd(mop, ntmpB=nrrdNew(), (airMopper)nrrdNuke, airMopAlways); |
279 |
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wantSize = limnSplineInfoSize[info]; |
280 |
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switch(nin->dim) { |
281 |
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case 3: |
282 |
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/* we assume that things are okay */ |
283 |
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if (nrrdCopy(nout, nin)) { |
284 |
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biffMovef(LIMN, NRRD, "%s: trouble setting output", me); |
285 |
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airMopError(mop); return 1; |
286 |
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} |
287 |
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break; |
288 |
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case 2: |
289 |
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N = nin->axis[1].size; |
290 |
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if (wantSize != nin->axis[0].size) { |
291 |
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biffAddf(LIMN, "%s: expected axis[0].size %d for info %s, but got %s", |
292 |
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me, wantSize, airEnumStr(limnSplineInfo, info), |
293 |
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airSprintSize_t(stmp, nin->axis[0].size)); |
294 |
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airMopError(mop); return 1; |
295 |
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} |
296 |
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if (limnSplineTypeTimeWarp == type) { |
297 |
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/* time-warp handled differently */ |
298 |
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if (nrrdAxesDelete(nout, nin, 0)) { |
299 |
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biffMovef(LIMN, NRRD, "%s: couldn't make data 1-D", me); |
300 |
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airMopError(mop); return 1; |
301 |
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} |
302 |
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} else { |
303 |
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if (limnSplineTypeHasImplicitTangents[type]) { |
304 |
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ELL_3V_SET(min, 0, -1, 0); |
305 |
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ELL_3V_SET(max, wantSize-1, 1, N-1); |
306 |
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if (nrrdAxesInsert(ntmpA, nin, 1) |
307 |
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|| nrrdPad_va(nout, ntmpA, min, max, nrrdBoundaryPad, 0.0)) { |
308 |
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biffMovef(LIMN, NRRD, "%s: trouble with axinsert/pad", me); |
309 |
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airMopError(mop); return 1; |
310 |
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} |
311 |
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} else { |
312 |
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/* the post- and pre- point information may be interlaced with the |
313 |
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main control point values */ |
314 |
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if (1 != AIR_MOD((int)N, 3)) { |
315 |
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biffAddf(LIMN, |
316 |
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"%s: axis[1].size must be 1+(multiple of 3) when using " |
317 |
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"interlaced tangent information, not %s", me, |
318 |
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airSprintSize_t(stmp, N)); |
319 |
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airMopError(mop); return 1; |
320 |
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} |
321 |
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ELL_2V_SET(min, 0, -1); |
322 |
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ELL_2V_SET(max, wantSize-1, N); |
323 |
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if (nrrdPad_va(ntmpA, nin, min, max, nrrdBoundaryPad, 0.0) |
324 |
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|| nrrdAxesSplit(nout, ntmpA, 1, 3, (N+2)/3)) { |
325 |
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biffMovef(LIMN, NRRD, "%s: trouble with pad/axsplit", me); |
326 |
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airMopError(mop); return 1; |
327 |
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} |
328 |
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} |
329 |
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} |
330 |
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break; |
331 |
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case 1: |
332 |
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N = nin->axis[0].size; |
333 |
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if (limnSplineInfoScalar != info) { |
334 |
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biffAddf(LIMN, "%s: can't have %s spline with 1-D nrrd", me, |
335 |
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airEnumStr(limnSplineInfo, info)); |
336 |
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airMopError(mop); return 1; |
337 |
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} |
338 |
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if (limnSplineTypeTimeWarp == type) { |
339 |
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/* nothing fancey needed for time-warp */ |
340 |
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if (nrrdCopy(nout, nin)) { |
341 |
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biffMovef(LIMN, NRRD, "%s: trouble setting output", me); |
342 |
|
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airMopError(mop); return 1; |
343 |
|
|
} |
344 |
|
|
} else { |
345 |
|
|
if (limnSplineTypeHasImplicitTangents[type]) { |
346 |
|
|
ELL_3V_SET(min, 0, -1, 0); |
347 |
|
|
ELL_3V_SET(max, 0, 1, N-1); |
348 |
|
|
if (nrrdAxesInsert(ntmpA, nin, 0) |
349 |
|
|
|| nrrdAxesInsert(ntmpB, ntmpA, 0) |
350 |
|
|
|| nrrdPad_va(nout, ntmpB, min, max, nrrdBoundaryPad, 0.0)) { |
351 |
|
|
biffMovef(LIMN, NRRD, "%s: trouble with axinsert/axinsert/pad", me); |
352 |
|
|
airMopError(mop); return 1; |
353 |
|
|
} |
354 |
|
|
} else { |
355 |
|
|
/* the post- and pre- point information may be interlaced with the |
356 |
|
|
main control point values */ |
357 |
|
|
if (1 != AIR_MOD((int)N, 3)) { |
358 |
|
|
biffAddf(LIMN, |
359 |
|
|
"%s: axis[1].size must be 1+(multiple of 3) when using " |
360 |
|
|
"interlaced tangent information, not %s", me, |
361 |
|
|
airSprintSize_t(stmp, N)); |
362 |
|
|
airMopError(mop); return 1; |
363 |
|
|
} |
364 |
|
|
ELL_2V_SET(min, 0, -1); |
365 |
|
|
ELL_2V_SET(max, 0, N+1); |
366 |
|
|
if (nrrdAxesInsert(ntmpA, nin, 0) |
367 |
|
|
|| nrrdPad_va(ntmpB, ntmpA, min, max, nrrdBoundaryPad, 0.0) |
368 |
|
|
|| nrrdAxesSplit(nout, ntmpB, 1, 3, (N+2)/3)) { |
369 |
|
|
biffMovef(LIMN, NRRD, "%s: trouble with axinsert/pad/axsplit", me); |
370 |
|
|
airMopError(mop); return 1; |
371 |
|
|
} |
372 |
|
|
} |
373 |
|
|
} |
374 |
|
|
break; |
375 |
|
|
default: |
376 |
|
|
biffAddf(LIMN, "%s: input nrrd dim %d baffling", me, nin->dim); |
377 |
|
|
return 1; |
378 |
|
|
} |
379 |
|
|
if (nrrdCheck(nout)) { |
380 |
|
|
biffMovef(LIMN, NRRD, "%s: oops: didn't create valid output", me); |
381 |
|
|
airMopError(mop); return 1; |
382 |
|
|
} |
383 |
|
|
airMopOkay(mop); |
384 |
|
|
return 0; |
385 |
|
|
} |
386 |
|
|
|
387 |
|
|
limnSpline * |
388 |
|
|
limnSplineCleverNew(Nrrd *ncpt, int info, limnSplineTypeSpec *spec) { |
389 |
|
|
static const char me[]="limnSplineCleverNew"; |
390 |
|
|
limnSpline *spline; |
391 |
|
|
Nrrd *ntmp; |
392 |
|
|
airArray *mop; |
393 |
|
|
|
394 |
|
|
if (!( ncpt && spec )) { |
395 |
|
|
biffAddf(LIMN, "%s: got NULL pointer", me); |
396 |
|
|
return NULL; |
397 |
|
|
} |
398 |
|
|
mop = airMopNew(); |
399 |
|
|
airMopAdd(mop, ntmp = nrrdNew(), (airMopper)nrrdNuke, airMopAlways); |
400 |
|
|
if (limnSplineNrrdCleverFix(ntmp, ncpt, info, spec->type)) { |
401 |
|
|
biffAddf(LIMN, "%s: couldn't fix up given control point nrrd", me); |
402 |
|
|
airMopError(mop); return NULL; |
403 |
|
|
} |
404 |
|
|
if (!( spline = limnSplineNew(ntmp, info, spec) )) { |
405 |
|
|
biffAddf(LIMN, "%s: couldn't create spline", me); |
406 |
|
|
airMopError(mop); return NULL; |
407 |
|
|
} |
408 |
|
|
|
409 |
|
|
airMopOkay(mop); |
410 |
|
|
return spline; |
411 |
|
|
} |
412 |
|
|
|
413 |
|
|
int |
414 |
|
|
limnSplineUpdate(limnSpline *spline, Nrrd *_ncpt) { |
415 |
|
|
static const char me[]="limnSplineUpdate"; |
416 |
|
|
Nrrd *ntmp; |
417 |
|
|
char stmp[2][AIR_STRLEN_SMALL]; |
418 |
|
|
|
419 |
|
|
if (!(spline && _ncpt)) { |
420 |
|
|
biffAddf(LIMN, "%s: got NULL pointer", me); |
421 |
|
|
return 1; |
422 |
|
|
} |
423 |
|
|
if (nrrdCheck(_ncpt)) { |
424 |
|
|
biffMovef(LIMN, NRRD, "%s: given nrrd has problems", me); |
425 |
|
|
return 1; |
426 |
|
|
} |
427 |
|
|
if (limnSplineTypeTimeWarp == spline->type) { |
428 |
|
|
if (!( 1 == _ncpt->dim )) { |
429 |
|
|
biffAddf(LIMN, "%s: given nrrd has dimension %d, not 1", me, _ncpt->dim); |
430 |
|
|
return 1; |
431 |
|
|
} |
432 |
|
|
if (!( spline->ncpt->axis[2].size == _ncpt->axis[0].size )) { |
433 |
|
|
biffAddf(LIMN, "%s: have %s time points, but got %s", me, |
434 |
|
|
airSprintSize_t(stmp[0], spline->ncpt->axis[2].size), |
435 |
|
|
airSprintSize_t(stmp[1], _ncpt->axis[0].size)); |
436 |
|
|
return 1; |
437 |
|
|
} |
438 |
|
|
} else { |
439 |
|
|
if (!( nrrdSameSize(spline->ncpt, _ncpt, AIR_TRUE) )) { |
440 |
|
|
biffMovef(LIMN, NRRD, "%s: given ncpt doesn't match original one", me); |
441 |
|
|
return 1; |
442 |
|
|
} |
443 |
|
|
} |
444 |
|
|
|
445 |
|
|
if (limnSplineTypeTimeWarp == spline->type) { |
446 |
|
|
ntmp = nrrdNew(); |
447 |
|
|
if (nrrdWrap_va(ntmp, spline->time, nrrdTypeDouble, 1, |
448 |
|
|
_ncpt->axis[0].size) |
449 |
|
|
|| nrrdConvert(ntmp, _ncpt, nrrdTypeDouble)) { |
450 |
|
|
biffMovef(LIMN, NRRD, "%s: trouble copying info", me); |
451 |
|
|
nrrdNix(ntmp); return 1; |
452 |
|
|
} |
453 |
|
|
if (_limnSplineTimeWarpSet(spline)) { |
454 |
|
|
biffAddf(LIMN, "%s: trouble setting time warp", me); |
455 |
|
|
nrrdNix(ntmp); return 1; |
456 |
|
|
} |
457 |
|
|
nrrdNix(ntmp); |
458 |
|
|
} else { |
459 |
|
|
if (nrrdConvert(spline->ncpt, _ncpt, nrrdTypeDouble)) { |
460 |
|
|
biffMovef(LIMN, NRRD, "%s: trouble converting to internal nrrd", me); |
461 |
|
|
return 1; |
462 |
|
|
} |
463 |
|
|
} |
464 |
|
|
|
465 |
|
|
return 0; |
466 |
|
|
} |