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* G. Ward |
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*/ |
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< |
#ifndef _WIN32 |
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#if !defined(_WIN32) && !defined(_WIN64) |
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#include <unistd.h> |
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#include <sys/wait.h> |
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#include <sys/mman.h> |
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static double |
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est_DSFrad(const RBFNODE *rbf, const FVECT outvec) |
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{ |
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const double rad_epsilon = 0.03; |
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const double rad_epsilon = 0.01; |
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const double DSFtarget = 0.60653066 * eval_rbfrep(rbf,outvec) * |
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COSF(outvec[2]); |
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double inside_rad = rad_epsilon; |
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do { |
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double test_rad = interp_rad; |
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double DSFtest; |
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if (test_rad >= outside_rad) |
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return(test_rad); |
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if (test_rad <= inside_rad) |
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return(test_rad*(test_rad>0)); |
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if ((test_rad >= outside_rad) | (test_rad <= inside_rad)) |
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test_rad = .5*(inside_rad + outside_rad); |
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DSFtest = eval_DSFsurround(rbf, outvec, test_rad); |
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if (DSFtest > DSFtarget) { |
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inside_rad = test_rad; |
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outside_rad = test_rad; |
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DSFoutside = DSFtest; |
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} |
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if (DSFoutside >= DSFinside) |
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return(test_rad); |
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} while (outside_rad-inside_rad > rad_epsilon); |
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return(interp_rad); |
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|
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return(.5*(inside_rad + outside_rad)); |
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#undef interp_rad |
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} |
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|
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/* Compute average BSDF peak from current DSF's */ |
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> |
static int |
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> |
dbl_cmp(const void *p1, const void *p2) |
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> |
{ |
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> |
double d1 = *(const double *)p1; |
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double d2 = *(const double *)p2; |
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> |
|
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if (d1 > d2) return(1); |
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if (d1 < d2) return(-1); |
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return(0); |
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} |
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|
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/* Conservative estimate of average BSDF value from current DSF's */ |
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static void |
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comp_bsdf_spec(void) |
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{ |
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const double max_hemi = 0.9; |
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double peak_sum = 0; |
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> |
double vmod_sum = 0; |
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double rad_sum = 0; |
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int n = 0; |
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double *cost_list = NULL; |
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double max_cost = 1.; |
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RBFNODE *rbf; |
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FVECT sdv; |
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|
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if (dsf_list == NULL) { |
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bsdf_spec_peak = 0; |
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/* sort by incident altitude */ |
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for (rbf = dsf_list; rbf != NULL; rbf = rbf->next) |
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n++; |
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if (n >= 10) |
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cost_list = (double *)malloc(sizeof(double)*n); |
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if (cost_list == NULL) { |
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bsdf_spec_val = 0; |
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bsdf_spec_rad = 0; |
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return; |
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} |
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n = 0; |
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for (rbf = dsf_list; rbf != NULL; rbf = rbf->next) |
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cost_list[n++] = rbf->invec[2]*input_orient; |
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qsort(cost_list, n, sizeof(double), dbl_cmp); |
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max_cost = cost_list[(n+3)/4]; /* accept 25% nearest grazing */ |
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free(cost_list); |
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n = 0; |
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for (rbf = dsf_list; rbf != NULL; rbf = rbf->next) { |
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double this_rad, cosfact, vest; |
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if (rbf->invec[2]*input_orient > max_cost) |
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continue; |
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sdv[0] = -rbf->invec[0]; |
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sdv[1] = -rbf->invec[1]; |
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sdv[2] = rbf->invec[2]*(2*(input_orient==output_orient) - 1); |
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peak_sum += eval_rbfrep(rbf, sdv); |
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rad_sum += est_DSFrad(rbf, sdv); |
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> |
cosfact = COSF(sdv[2]); |
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this_rad = est_DSFrad(rbf, sdv); |
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> |
vest = eval_rbfrep(rbf, sdv) * cosfact * |
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> |
(2.*M_PI) * this_rad*this_rad; |
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> |
if (vest > rbf->vtotal) /* don't over-estimate energy */ |
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> |
vest = rbf->vtotal; |
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> |
vmod_sum += vest / cosfact; /* remove cosine factor */ |
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> |
rad_sum += this_rad; |
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++n; |
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} |
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bsdf_spec_peak = peak_sum/(double)n; |
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bsdf_spec_rad = rad_sum/(double)n; |
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< |
if ((2.*M_PI)*bsdf_spec_peak*bsdf_spec_rad*bsdf_spec_rad > max_hemi) |
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< |
bsdf_spec_peak = max_hemi/((2.*M_PI)*bsdf_spec_rad*bsdf_spec_rad); |
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> |
bsdf_spec_val = vmod_sum/(2.*M_PI*n*bsdf_spec_rad*bsdf_spec_rad); |
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} |
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|
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/* Create a new migration holder (sharing memory for multiprocessing) */ |
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size_t memlen = sizeof(MIGRATION) + |
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sizeof(float)*(from_rbf->nrbf*to_rbf->nrbf - 1); |
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MIGRATION *newmig; |
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< |
#ifdef _WIN32 |
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> |
#if defined(_WIN32) || defined(_WIN64) |
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if (nprocs > 1) |
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fprintf(stderr, "%s: warning - multiprocessing not supported\n", |
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progname); |
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return(mig_list = newmig); |
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} |
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|
193 |
< |
#ifdef _WIN32 |
193 |
> |
#if defined(_WIN32) || defined(_WIN64) |
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#define await_children(n) (void)(n) |
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#define run_subprocess() 0 |
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#define end_subprocess() (void)0 |
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default: |
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return; /* else we can interpolate */ |
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} |
491 |
< |
for (rbf = near_rbf->next; rbf != NULL; rbf = rbf->next) { |
491 |
> |
for (rbf = dsf_list; rbf != NULL; rbf = rbf->next) { |
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const double d = input_orient*rbf->invec[2]; |
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if (d >= 1.-2.*FTINY) |
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return; /* seems we have normal */ |
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void |
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build_mesh(void) |
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{ |
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+ |
int nrbfs = 0, nmigs = 0; |
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double best2 = M_PI*M_PI; |
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RBFNODE *shrt_edj[2]; |
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RBFNODE *rbf0, *rbf1; |
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+ |
const MIGRATION *ej; |
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/* average specular peak */ |
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comp_bsdf_spec(); |
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/* add normal if needed */ |
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return; |
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} |
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shrt_edj[0] = shrt_edj[1] = NULL; /* start w/ shortest edge */ |
559 |
< |
for (rbf0 = dsf_list; rbf0 != NULL; rbf0 = rbf0->next) |
559 |
> |
for (rbf0 = dsf_list; rbf0 != NULL; rbf0 = rbf0->next) { |
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for (rbf1 = rbf0->next; rbf1 != NULL; rbf1 = rbf1->next) { |
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double dist2 = 2. - 2.*DOT(rbf0->invec,rbf1->invec); |
562 |
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if (dist2 < best2) { |
564 |
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shrt_edj[1] = rbf1; |
565 |
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best2 = dist2; |
566 |
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} |
567 |
+ |
} |
568 |
+ |
++nrbfs; |
569 |
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} |
570 |
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if (shrt_edj[0] == NULL) { |
571 |
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fprintf(stderr, "%s: Cannot find shortest edge\n", progname); |
576 |
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mesh_from_edge(create_migration(shrt_edj[0], shrt_edj[1])); |
577 |
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else |
578 |
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mesh_from_edge(create_migration(shrt_edj[1], shrt_edj[0])); |
579 |
+ |
/* count up edges */ |
580 |
+ |
for (ej = mig_list; ej != NULL; ej = ej->next) |
581 |
+ |
++nmigs; |
582 |
+ |
if (nmigs < nrbfs-1) /* did meshing fail? */ |
583 |
+ |
fprintf(stderr, |
584 |
+ |
"%s: warning - %d incident directions but only %d interpolant(s)\n", |
585 |
+ |
progname, nrbfs, nmigs); |
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/* complete migrations */ |
587 |
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await_children(nchild); |
588 |
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} |