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#ifndef lint
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static const char RCSid[] = "$Id$";
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#endif
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/*
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* Compute mass transport plan for RBF lobes
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*/
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#define _USE_MATH_DEFINES
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#include <stdio.h>
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#include <string.h>
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#include "transportSimplex.h"
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#include "bsdfrep.h"
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using namespace t_simplex;
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using namespace std;
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/* Compute mass transport plan (internal call) */
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extern "C" void
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plan_transport(MIGRATION *mig)
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{
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double src[mtx_nrows(mig)];
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double dst[mtx_ncols(mig)];
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TsSignature<RBFVAL> srcSig(mtx_nrows(mig), mig->rbfv[0]->rbfa, src);
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TsSignature<RBFVAL> dstSig(mtx_ncols(mig), mig->rbfv[1]->rbfa, dst);
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TsFlow flow[mtx_nrows(mig)+mtx_ncols(mig)-1];
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int n;
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/* clear flow matrix */
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memset(mig->mtx, 0, sizeof(float)*mtx_nrows(mig)*mtx_ncols(mig));
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/* set supplies & demands */
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for (n = mtx_nrows(mig); n--; )
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src[n] = rbf_volume(&mig->rbfv[0]->rbfa[n]) /
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mig->rbfv[0]->vtotal;
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for (n = mtx_ncols(mig); n--; )
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dst[n] = rbf_volume(&mig->rbfv[1]->rbfa[n]) /
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mig->rbfv[1]->vtotal;
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n = 0; /* minimize EMD */
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transportSimplex(&srcSig, &dstSig, &lobe_distance, flow, &n);
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while (n-- > 0) /* assign sparse matrix */
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mtx_coef(mig, flow[n].from, flow[n].to) = flow[n].amount;
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}
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