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#ifndef lint |
2 |
static const char RCSid[] = "$Id: eplus_adduvf.c,v 2.19 2019/12/13 16:00:33 greg Exp $"; |
3 |
#endif |
4 |
/* |
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* Add User View Factors to EnergyPlus Input Data File |
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* |
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* G.Ward for LBNL |
8 |
*/ |
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|
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#include <stdlib.h> |
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#include "platform.h" |
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#include "rtio.h" |
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#include "rtmath.h" |
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#include "random.h" |
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#include "eplus_idf.h" |
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#include "triangulate.h" |
17 |
#include "rtprocess.h" |
18 |
|
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#ifndef NSAMPLES |
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#define NSAMPLES 80000 /* default number of samples */ |
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#endif |
22 |
|
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#define SURF_EPS 0.0005 /* surface testing epsilon */ |
24 |
|
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char *progname; /* global argv[0] */ |
26 |
|
27 |
int nsamps = NSAMPLES; /* number of samples to use */ |
28 |
|
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char temp_octree[128]; /* temporary octree */ |
30 |
|
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const char UVF_PNAME[] = |
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"ZoneProperty:UserViewFactors:bySurfaceName"; |
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|
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const char SUBSURF_PNAME[] = |
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"FenestrationSurface:Detailed"; |
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|
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const char ADD_HEADER[] = |
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"\n!+++ User View Factors computed by Radiance +++!\n\n"; |
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|
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#define NAME_FLD 1 /* name field always first? */ |
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|
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#define SS_BASE_FLD 4 /* subsurface base surface */ |
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#define SS_VERT_FLD 10 /* subsurface vertex count */ |
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|
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typedef struct { |
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const char *pname; /* object type name */ |
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short zone_fld; /* zone field index */ |
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short vert_fld; /* vertex field index */ |
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} SURF_PTYPE; /* surface type we're interested in */ |
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|
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const SURF_PTYPE surf_type[] = { |
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{"BuildingSurface:Detailed", 4, 10}, |
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{"Floor:Detailed", 3, 9}, |
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{"RoofCeiling:Detailed", 3, 9}, |
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{"Wall:Detailed", 3, 9}, |
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{NULL} |
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}; /* IDF surface types */ |
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|
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typedef struct s_zone { |
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const char *zname; /* zone name */ |
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struct s_zone *next; /* next zone in list */ |
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int nsurf; /* surface count */ |
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int ntotal; /* surfaces+subsurfaces */ |
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IDF_OBJECT *pfirst; /* first matching object */ |
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IDF_OBJECT *plast; /* last before subsurfaces */ |
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float *area_redu; /* subsurface area per surf. */ |
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} ZONE; /* a list of collected zone surfaces */ |
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|
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ZONE *zone_list = NULL; /* our list of zones */ |
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|
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LUTAB zonesurf_lut = /* zone surface lookup table */ |
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LU_SINIT(NULL,NULL); |
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|
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IDF_LOADED *our_idf = NULL; /* loaded/modified IDF */ |
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|
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typedef struct { |
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FVECT norm; /* surface normal */ |
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double area; /* surface area */ |
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int nv; /* number of vertices */ |
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FVECT vl[3]; /* vertex list (extends struct) */ |
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} SURFACE; /* a polygonal surface */ |
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|
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typedef struct { |
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FVECT sdir[3]; /* UVW unit sampling vectors */ |
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double poff; /* W-offset for plane of polygon */ |
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double area_left; /* area left to sample */ |
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int samp_left; /* remaining samples */ |
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int wd; /* output file descriptor */ |
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} POLYSAMP; /* structure for polygon sampling */ |
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|
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/* Create a new zone and push to top of our list */ |
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static ZONE * |
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new_zone(const char *zname, IDF_OBJECT *param) |
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{ |
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ZONE *znew = (ZONE *)malloc(sizeof(ZONE)); |
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|
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if (znew == NULL) |
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return(NULL); |
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znew->zname = zname; /* assumes static */ |
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znew->next = zone_list; |
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znew->pfirst = znew->plast = param; |
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znew->ntotal = znew->nsurf = 1; |
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znew->area_redu = NULL; |
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return(zone_list = znew); |
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} |
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|
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/* Add the detailed surface (polygon) to the named zone */ |
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static ZONE * |
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add2zone(IDF_OBJECT *param, const char *zname) |
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{ |
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IDF_FIELD *nfp = idf_getfield(param, NAME_FLD); |
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ZONE *zptr; |
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LUENT *lep; |
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|
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if (nfp == NULL) { |
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fputs(progname, stderr); |
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fputs(": surface missing name field!\n", stderr); |
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return(NULL); |
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} |
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for (zptr = zone_list; zptr != NULL; zptr = zptr->next) |
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if (!strcmp(zptr->zname, zname)) |
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break; |
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if (zptr == NULL) { |
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zptr = new_zone(zname, param); |
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} else { /* keep surfaces together */ |
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if (!idf_movobject(our_idf, param, zptr->plast)) |
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return(NULL); |
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zptr->plast = param; |
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zptr->nsurf++; |
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zptr->ntotal++; |
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} |
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/* add to lookup table */ |
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lep = lu_find(&zonesurf_lut, nfp->val); |
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if (lep == NULL) |
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return(NULL); |
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if (lep->data != NULL) { |
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fputs(progname, stderr); |
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fputs(": duplicate surface name '", stderr); |
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fputs(nfp->val, stderr); |
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fputs("'\n", stderr); |
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return(NULL); |
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} |
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lep->key = nfp->val; |
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lep->data = (char *)zptr; |
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return(zptr); |
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} |
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|
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/* Add a subsurface by finding its base surface and the corresponding zone */ |
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static ZONE * |
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add_subsurf(IDF_OBJECT *param) |
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{ |
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IDF_FIELD *bfp = idf_getfield(param, SS_BASE_FLD); |
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ZONE *zptr; |
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LUENT *lep; |
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|
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if (bfp == NULL) { |
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fputs(progname, stderr); |
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fputs(": missing base field name in subsurface!\n", stderr); |
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return(NULL); |
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} |
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lep = lu_find(&zonesurf_lut, bfp->val); /* find base zone */ |
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if (lep == NULL || lep->data == NULL) { |
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fputs(progname, stderr); |
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fputs(": cannot find referenced base surface '", stderr); |
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fputs(bfp->val, stderr); |
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fputs("'\n", stderr); |
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return(NULL); |
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} |
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zptr = (ZONE *)lep->data; /* add this subsurface */ |
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if (!idf_movobject(our_idf, param, zptr->plast)) |
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return(NULL); |
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zptr->ntotal++; |
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return(zptr); |
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} |
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|
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/* Return field for vertices in the given object */ |
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static IDF_FIELD * |
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get_vlist(IDF_OBJECT *param, const char *zname) |
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{ |
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#define itm_len (sizeof(IDF_FIELD)+6) |
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static char fld_buf[4*itm_len]; |
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static char *next_fbp = fld_buf; |
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int i; |
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IDF_FIELD *res; |
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/* check if subsurface */ |
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if (!strcmp(param->pname, SUBSURF_PNAME)) { |
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if (zname != NULL) { |
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LUENT *lep = lu_find(&zonesurf_lut, |
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idf_getfield(param,SS_BASE_FLD)->val); |
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if (strcmp((*(ZONE *)lep->data).zname, zname)) |
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return(NULL); |
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} |
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res = idf_getfield(param, SS_VERT_FLD); |
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} else { |
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i = 0; /* check for surface type */ |
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while (strcmp(surf_type[i].pname, param->pname)) |
197 |
if (surf_type[++i].pname == NULL) |
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return(NULL); |
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|
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if (zname != NULL) { /* matches specified zone? */ |
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IDF_FIELD *fptr = idf_getfield(param, surf_type[i].zone_fld); |
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if (fptr == NULL || strcmp(fptr->val, zname)) |
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return(NULL); |
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} |
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res = idf_getfield(param, surf_type[i].vert_fld); |
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} |
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if (!res->val[0]) { /* hack for missing #vert */ |
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IDF_FIELD *fptr; |
209 |
if (next_fbp >= fld_buf+sizeof(fld_buf)) |
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next_fbp = fld_buf; |
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i = 0; /* count vertices */ |
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for (fptr = res->next; fptr != NULL; fptr = fptr->next) |
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++i; |
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if (i % 3) |
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return(NULL); |
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fptr = res->next; |
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res = (IDF_FIELD *)next_fbp; next_fbp += itm_len; |
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res->next = fptr; |
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res->rem = ""; |
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sprintf(res->val, "%d", i/3); |
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} |
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return(res); |
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#undef itm_len |
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} |
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|
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/* Get/allocate surface polygon */ |
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static SURFACE * |
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get_surface(IDF_FIELD *fptr) |
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{ |
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SURFACE *surf; |
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int nv; |
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FVECT e1, e2, vc; |
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int i, j; |
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/* get number of vertices */ |
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if (fptr == NULL || (nv = atoi(fptr->val)) < 3) { |
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fputs(progname, stderr); |
237 |
fputs(": bad vertex count for surface!\n", stderr); |
238 |
return(NULL); |
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} |
240 |
surf = (SURFACE *)malloc(sizeof(SURFACE)+sizeof(FVECT)*(nv-3)); |
241 |
if (surf == NULL) |
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return(NULL); |
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surf->nv = nv; |
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for (i = nv; i--; ) /* reverse vertex order/orientation */ |
245 |
for (j = 0; j < 3; j++) { |
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fptr = fptr->next; |
247 |
if (fptr == NULL) { |
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fputs(progname, stderr); |
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fputs(": missing vertex in get_surface()\n", stderr); |
250 |
free(surf); |
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return(NULL); |
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} |
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if ((surf->vl[i][j] = atof(fptr->val)) == 0 && |
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!isflt(fptr->val)) { |
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fputs(progname, stderr); |
256 |
fputs(": bad vertex in get_surface()\n", stderr); |
257 |
free(surf); |
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return(NULL); |
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} |
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} |
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/* compute area and normal */ |
262 |
surf->norm[0] = surf->norm[1] = surf->norm[2] = 0; |
263 |
VSUB(e1, surf->vl[1], surf->vl[0]); |
264 |
for (i = 2; i < nv; i++) { |
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VSUB(e2, surf->vl[i], surf->vl[0]); |
266 |
fcross(vc, e1, e2); |
267 |
surf->norm[0] += vc[0]; |
268 |
surf->norm[1] += vc[1]; |
269 |
surf->norm[2] += vc[2]; |
270 |
VCOPY(e1, e2); |
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} |
272 |
surf->area = .5 * normalize(surf->norm); |
273 |
if (surf->area == 0) { |
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fputs(progname, stderr); |
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fputs(": degenerate polygon in get_surface()\n", stderr); |
276 |
free(surf); |
277 |
return(NULL); |
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} |
279 |
return(surf); |
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} |
281 |
|
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/* Convert surface to Radiance with modifier based on unique name */ |
283 |
static int |
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rad_surface(IDF_OBJECT *param, FILE *ofp) |
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{ |
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const char *sname = idf_getfield(param,NAME_FLD)->val; |
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IDF_FIELD *fptr = get_vlist(param, NULL); |
288 |
const char **fargs; |
289 |
int nvert, i, j; |
290 |
|
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if (fptr == NULL || (nvert = atoi(fptr->val)) < 3) { |
292 |
fprintf(stderr, "%s: bad surface '%s'\n", progname, sname); |
293 |
return(0); |
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} |
295 |
fargs = (const char **)malloc(sizeof(const char *)*3*nvert); |
296 |
if (fargs == NULL) |
297 |
return(0); |
298 |
fprintf(ofp, "\nvoid glow '%s'\n0\n0\n4 1 1 1 0\n", sname); |
299 |
fprintf(ofp, "\n'%s' polygon 's_%s'\n0\n0\n%d\n", sname, sname, 3*nvert); |
300 |
for (j = nvert; j--; ) { /* get arguments in reverse */ |
301 |
for (i = 0; i < 3; i++) { |
302 |
fptr = fptr->next; |
303 |
if (fptr == NULL || !isflt(fptr->val)) { |
304 |
fprintf(stderr, |
305 |
"%s: missing/bad vertex for %s '%s'\n", |
306 |
progname, param->pname, sname); |
307 |
return(0); |
308 |
} |
309 |
fargs[3*j + i] = fptr->val; |
310 |
} |
311 |
} |
312 |
for (j = 0; j < nvert; j++) { /* output reversed verts */ |
313 |
for (i = 0; i < 3; i++) { |
314 |
fputc('\t', ofp); |
315 |
fputs(fargs[3*j + i], ofp); |
316 |
} |
317 |
fputc('\n', ofp); |
318 |
} |
319 |
free(fargs); |
320 |
return(!ferror(ofp)); |
321 |
} |
322 |
|
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/* Convert subsurface to Radiance with modifier based on unique name */ |
324 |
static double |
325 |
rad_subsurface(IDF_OBJECT *param, FILE *ofp) |
326 |
{ |
327 |
const char *sname = idf_getfield(param,NAME_FLD)->val; |
328 |
SURFACE *surf = get_surface(get_vlist(param, NULL)); |
329 |
double area; |
330 |
int i; |
331 |
|
332 |
if (surf == NULL) { |
333 |
fprintf(stderr, "%s: bad subsurface '%s'\n", progname, sname); |
334 |
return(-1.); |
335 |
} |
336 |
fprintf(ofp, "\nvoid glow '%s'\n0\n0\n4 1 1 1 0\n", sname); |
337 |
fprintf(ofp, "\n'%s' polygon 'ss_%s'\n0\n0\n%d\n", |
338 |
sname, sname, 3*surf->nv); |
339 |
for (i = 0; i < surf->nv; i++) { /* offset vertices */ |
340 |
FVECT vert; |
341 |
VSUM(vert, surf->vl[i], surf->norm, 2.*SURF_EPS); |
342 |
fprintf(ofp, "\t%.12f %.12f %.12f\n", vert[0], vert[1], vert[2]); |
343 |
} |
344 |
area = surf->area; |
345 |
free(surf); |
346 |
if (ferror(ofp)) |
347 |
return(-1.); |
348 |
return(area); |
349 |
} |
350 |
|
351 |
/* Start rcontrib process */ |
352 |
static int |
353 |
start_rcontrib(SUBPROC *pd, ZONE *zp) |
354 |
{ |
355 |
#define BASE_AC 6 |
356 |
static char *base_av[BASE_AC] = { |
357 |
"rcontrib", "-V+", "-fff", "-h", "-x", "1" |
358 |
}; |
359 |
char cbuf[300]; |
360 |
char **av; |
361 |
FILE *ofp; |
362 |
IDF_OBJECT *pptr; |
363 |
IDF_FIELD *fptr; |
364 |
int i, j, n; |
365 |
/* start oconv command */ |
366 |
sprintf(cbuf, "oconv - > \"%s\"", temp_octree); |
367 |
if ((ofp = popen(cbuf, "w")) == NULL) { |
368 |
fputs(progname, stderr); |
369 |
fputs(": cannot open oconv process\n", stderr); |
370 |
return(0); |
371 |
} |
372 |
/* allocate argument list */ |
373 |
av = (char **)malloc(sizeof(char *)*(BASE_AC+4+2*(zp->ntotal))); |
374 |
if (av == NULL) |
375 |
return(0); |
376 |
for (i = 0; i < BASE_AC; i++) |
377 |
av[i] = base_av[i]; |
378 |
sprintf(cbuf, "%d", nsamps); |
379 |
av[i++] = "-c"; |
380 |
av[i++] = cbuf; /* add modifiers & surfaces */ |
381 |
for (n = 0, pptr = zp->pfirst; n < zp->nsurf; n++, pptr = pptr->dnext) { |
382 |
fptr = idf_getfield(pptr,NAME_FLD); |
383 |
if (fptr == NULL || !fptr->val[0]) { |
384 |
fputs(progname, stderr); |
385 |
fputs(": missing name for surface object\n", stderr); |
386 |
return(0); |
387 |
} |
388 |
if (!rad_surface(pptr, ofp)) /* add surface to octree */ |
389 |
return(0); |
390 |
av[i++] = "-m"; |
391 |
av[i++] = fptr->val; |
392 |
} |
393 |
/* now subsurfaces */ |
394 |
if (zp->ntotal > zp->nsurf) { |
395 |
if (zp->area_redu != NULL) |
396 |
memset(zp->area_redu, 0, sizeof(float)*zp->ntotal); |
397 |
else if ((zp->area_redu = (float *)calloc(zp->ntotal, |
398 |
sizeof(float))) == NULL) |
399 |
return(0); |
400 |
} |
401 |
for ( ; n < zp->ntotal; n++, pptr = pptr->dnext) { |
402 |
double ssarea; |
403 |
const char *bname; |
404 |
IDF_OBJECT *pptr1; |
405 |
fptr = idf_getfield(pptr,NAME_FLD); |
406 |
if (fptr == NULL || !fptr->val[0]) { |
407 |
fputs(progname, stderr); |
408 |
fputs(": missing name for subsurface object\n", stderr); |
409 |
return(0); |
410 |
} |
411 |
/* add subsurface to octree */ |
412 |
if ((ssarea = rad_subsurface(pptr, ofp)) < 0) |
413 |
return(0); |
414 |
/* mark area for subtraction */ |
415 |
bname = idf_getfield(pptr,SS_BASE_FLD)->val; |
416 |
for (j = 0, pptr1 = zp->pfirst; |
417 |
j < zp->nsurf; j++, pptr1 = pptr1->dnext) |
418 |
if (!strcmp(idf_getfield(pptr1,NAME_FLD)->val, bname)) { |
419 |
zp->area_redu[j] += ssarea; |
420 |
break; |
421 |
} |
422 |
av[i++] = "-m"; |
423 |
av[i++] = fptr->val; |
424 |
} |
425 |
if (pclose(ofp) != 0) { /* finish oconv */ |
426 |
fputs(progname, stderr); |
427 |
fputs(": error running oconv process\n", stderr); |
428 |
return(0); |
429 |
} |
430 |
av[i++] = temp_octree; /* add final octree argument */ |
431 |
av[i] = NULL; |
432 |
if (open_process(pd, av) <= 0) { /* start process */ |
433 |
fputs(progname, stderr); |
434 |
fputs(": cannot start rcontrib process\n", stderr); |
435 |
return(0); |
436 |
} |
437 |
free(av); /* all done -- clean up */ |
438 |
return(1); |
439 |
#undef BASE_AC |
440 |
} |
441 |
|
442 |
/* Initialize polygon sampling */ |
443 |
static Vert2_list * |
444 |
init_poly(POLYSAMP *ps, IDF_FIELD *f0) |
445 |
{ |
446 |
SURFACE *surf; |
447 |
Vert2_list *vl2; |
448 |
int i; |
449 |
/* get 3-D polygon vertices */ |
450 |
if ((surf = get_surface(f0)) == NULL) |
451 |
return(NULL); |
452 |
vl2 = polyAlloc(surf->nv); |
453 |
if (vl2 == NULL) |
454 |
return(NULL); |
455 |
/* create X & Y axes */ |
456 |
VCOPY(ps->sdir[2], surf->norm); |
457 |
VSUB(ps->sdir[0], surf->vl[1], surf->vl[0]); |
458 |
if (normalize(ps->sdir[0]) == 0) |
459 |
return(NULL); |
460 |
fcross(ps->sdir[1], ps->sdir[2], ps->sdir[0]); |
461 |
/* compute plane offset */ |
462 |
ps->poff = DOT(surf->vl[0], ps->sdir[2]); |
463 |
/* assign 2-D vertices */ |
464 |
for (i = 0; i < surf->nv; i++) { |
465 |
vl2->v[i].mX = DOT(surf->vl[i], ps->sdir[0]); |
466 |
vl2->v[i].mY = DOT(surf->vl[i], ps->sdir[1]); |
467 |
} |
468 |
ps->area_left = surf->area; |
469 |
free(surf); /* it's ready! */ |
470 |
vl2->p = (void *)ps; |
471 |
return(vl2); |
472 |
} |
473 |
|
474 |
/* Generate samples on 2-D triangle */ |
475 |
static int |
476 |
sample_triangle(const Vert2_list *vl2, int a, int b, int c) |
477 |
{ |
478 |
POLYSAMP *ps = (POLYSAMP *)vl2->p; |
479 |
float *samp; |
480 |
FVECT orig; |
481 |
FVECT ab, ac; |
482 |
double area; |
483 |
int i, j, ns; |
484 |
/* compute sampling axes */ |
485 |
for (i = 3; i--; ) { |
486 |
orig[i] = vl2->v[a].mX*ps->sdir[0][i] + |
487 |
vl2->v[a].mY*ps->sdir[1][i] + |
488 |
(ps->poff+SURF_EPS)*ps->sdir[2][i]; |
489 |
ab[i] = (vl2->v[b].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
490 |
(vl2->v[b].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
491 |
ac[i] = (vl2->v[c].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
492 |
(vl2->v[c].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
493 |
} |
494 |
/* compute number of samples to take */ |
495 |
area = .5*(vl2->v[a].mX*vl2->v[b].mY - vl2->v[b].mX*vl2->v[a].mY + |
496 |
vl2->v[b].mX*vl2->v[c].mY - vl2->v[c].mX*vl2->v[b].mY + |
497 |
vl2->v[c].mX*vl2->v[a].mY - vl2->v[a].mX*vl2->v[c].mY); |
498 |
if (area < .0) { |
499 |
fputs(progname, stderr); |
500 |
fputs(": negative triangle area in sample_triangle()\n", stderr); |
501 |
return(0); |
502 |
} |
503 |
if (area >= ps->area_left) { |
504 |
ns = ps->samp_left; |
505 |
ps->area_left = 0; |
506 |
} else { |
507 |
ns = (ps->samp_left*area/ps->area_left + .5); |
508 |
ps->samp_left -= ns; |
509 |
ps->area_left -= area; |
510 |
} |
511 |
if (ns <= 0) /* XXX should be error? */ |
512 |
return(1); |
513 |
/* buffer sample rays */ |
514 |
samp = (float *)malloc(sizeof(float)*6*ns); |
515 |
if (samp == NULL) |
516 |
return(0); |
517 |
for (i = ns; i--; ) { /* stratified Monte Carlo sampling */ |
518 |
double sv[4]; |
519 |
FVECT dv; |
520 |
multisamp(sv, 4, (i+frandom())/(double)ns); |
521 |
sv[0] *= sv[1] = sqrt(sv[1]); |
522 |
sv[1] = 1. - sv[1]; |
523 |
for (j = 3; j--; ) |
524 |
samp[i*6 + j] = orig[j] + sv[0]*ab[j] + sv[1]*ac[j]; |
525 |
sv[2] = sqrt(sv[2]); |
526 |
sv[3] *= 2.*PI; |
527 |
dv[0] = tcos(sv[3]) * sv[2]; |
528 |
dv[1] = tsin(sv[3]) * sv[2]; |
529 |
dv[2] = sqrt(1. - sv[2]*sv[2]); |
530 |
for (j = 3; j--; ) |
531 |
samp[i*6 + 3 + j] = dv[0]*ps->sdir[0][j] + |
532 |
dv[1]*ps->sdir[1][j] + |
533 |
dv[2]*ps->sdir[2][j] ; |
534 |
} |
535 |
/* send to our process */ |
536 |
writebuf(ps->wd, (char *)samp, sizeof(float)*6*ns); |
537 |
free(samp); /* that's it! */ |
538 |
return(1); |
539 |
} |
540 |
|
541 |
/* Sample the given surface */ |
542 |
static double |
543 |
sample_surface(IDF_OBJECT *param, int wd) |
544 |
{ |
545 |
POLYSAMP psamp; |
546 |
double area; |
547 |
int nv; |
548 |
Vert2_list *vlist2; |
549 |
/* set up our polygon sampler */ |
550 |
if ((vlist2 = init_poly(&psamp, get_vlist(param, NULL))) == NULL) { |
551 |
fprintf(stderr, "%s: bad polygon %s '%s'\n", |
552 |
progname, param->pname, |
553 |
idf_getfield(param,NAME_FLD)->val); |
554 |
return(-1.); |
555 |
} |
556 |
psamp.samp_left = nsamps; /* assign samples & destination */ |
557 |
psamp.wd = wd; |
558 |
/* hack for subsurface sampling */ |
559 |
psamp.poff += 2.*SURF_EPS * !strcmp(param->pname, SUBSURF_PNAME); |
560 |
|
561 |
area = psamp.area_left; /* remember starting surface area */ |
562 |
/* sample each subtriangle */ |
563 |
if (!polyTriangulate(vlist2, &sample_triangle)) |
564 |
return(-1.); |
565 |
polyFree(vlist2); /* clean up and return */ |
566 |
return(area); |
567 |
} |
568 |
|
569 |
/* Compute User View Factors using open rcontrib process */ |
570 |
static int |
571 |
compute_uvfs(SUBPROC *pd, ZONE *zp) |
572 |
{ |
573 |
IDF_OBJECT *pptr, *pout, *pptr1; |
574 |
float *uvfa; |
575 |
char uvfbuf[24]; |
576 |
int n, m; |
577 |
/* create output object */ |
578 |
pout = idf_newobject(our_idf, UVF_PNAME, |
579 |
" ! computed by Radiance\n ", our_idf->plast); |
580 |
if (pout == NULL) { |
581 |
fputs(progname, stderr); |
582 |
fputs(": cannot create new IDF object\n", stderr); |
583 |
return(0); |
584 |
} |
585 |
if (!idf_addfield(pout, zp->zname, |
586 |
" !- Zone Name\n ")) { |
587 |
fputs(progname, stderr); |
588 |
fputs(": cannot add zone name field\n", stderr); |
589 |
return(0); |
590 |
} |
591 |
/* allocate read buffer */ |
592 |
uvfa = (float *)malloc(sizeof(float)*3*zp->ntotal); |
593 |
if (uvfa == NULL) |
594 |
return(0); |
595 |
/* UVFs from each surface */ |
596 |
for (n = 0, pptr = zp->pfirst; n < zp->ntotal; n++, pptr = pptr->dnext) { |
597 |
double vfsum = 0; |
598 |
double adj_factor; |
599 |
/* send samples to rcontrib */ |
600 |
if ((adj_factor = sample_surface(pptr, pd->w)) < 0) |
601 |
return(0); |
602 |
if (zp->area_redu == NULL) |
603 |
adj_factor = 1.; |
604 |
else /* comp. for subsurface area */ |
605 |
adj_factor /= adj_factor - zp->area_redu[n]; |
606 |
/* read results */ |
607 |
if (readbuf(pd->r, (char *)uvfa, sizeof(float)*3*zp->ntotal) != |
608 |
sizeof(float)*3*zp->ntotal) { |
609 |
fputs(progname, stderr); |
610 |
fputs(": read error from rcontrib process\n", stderr); |
611 |
return(0); |
612 |
} |
613 |
/* append UVF fields */ |
614 |
for (m = 0, pptr1 = zp->pfirst; |
615 |
m < zp->ntotal; m++, pptr1 = pptr1->dnext) { |
616 |
const double uvf = uvfa[3*m + 1] * adj_factor; |
617 |
vfsum += uvf; |
618 |
if (pptr1 == pptr && uvf > .001) |
619 |
fprintf(stderr, |
620 |
"%s: warning - non-zero self-VF (%.1f%%) for surface '%s'\n", |
621 |
progname, 100.*uvf, |
622 |
idf_getfield(pptr,NAME_FLD)->val); |
623 |
sprintf(uvfbuf, "%.4f", uvf); |
624 |
if (!idf_addfield(pout, |
625 |
idf_getfield(pptr,NAME_FLD)->val, NULL) || |
626 |
!idf_addfield(pout, |
627 |
idf_getfield(pptr1,NAME_FLD)->val, NULL) || |
628 |
!idf_addfield(pout, uvfbuf, |
629 |
(n+m < 2*zp->ntotal-2) ? |
630 |
"\n " : "\n\n")) { |
631 |
fputs(progname, stderr); |
632 |
fputs(": error adding UVF fields\n", stderr); |
633 |
return(0); |
634 |
} |
635 |
} |
636 |
if (vfsum < 0.95) |
637 |
fprintf(stderr, |
638 |
"%s: warning - missing %.1f%% of energy from surface '%s'\n", |
639 |
progname, 100.*(1.-vfsum), |
640 |
idf_getfield(pptr,NAME_FLD)->val); |
641 |
} |
642 |
free(uvfa); /* clean up and return */ |
643 |
return(1); |
644 |
} |
645 |
|
646 |
/* Compute zone User View Factors */ |
647 |
static int |
648 |
compute_zones(void) |
649 |
{ |
650 |
ZONE *zptr; |
651 |
/* temporary octree name */ |
652 |
mktemp(strcpy(temp_octree, TEMPLATE)); |
653 |
/* compute each zone */ |
654 |
for (zptr = zone_list; zptr != NULL; zptr = zptr->next) { |
655 |
SUBPROC rcproc; |
656 |
/* start rcontrib process */ |
657 |
if (!start_rcontrib(&rcproc, zptr)) |
658 |
return(0); |
659 |
/* compute+add view factors */ |
660 |
if (!compute_uvfs(&rcproc, zptr)) |
661 |
return(0); |
662 |
if (close_process(&rcproc) != 0) { |
663 |
fputs(progname, stderr); |
664 |
fputs(": bad return status from rcontrib\n", stderr); |
665 |
return(0); |
666 |
} |
667 |
} |
668 |
unlink(temp_octree); /* remove octree file */ |
669 |
return(1); |
670 |
} |
671 |
|
672 |
/* Load IDF and compute User View Factors */ |
673 |
int |
674 |
main(int argc, char *argv[]) |
675 |
{ |
676 |
int incl_comments = 1; |
677 |
char *origIDF, *revIDF; |
678 |
IDF_OBJECT *pptr; |
679 |
int i; |
680 |
|
681 |
progname = *argv++; argc--; /* get options if any */ |
682 |
while (argc > 1 && argv[0][0] == '-') |
683 |
switch (argv[0][1]) { |
684 |
case 'c': /* elide comments */ |
685 |
incl_comments = -1; /* header only */ |
686 |
argv++; argc--; |
687 |
continue; |
688 |
case 's': /* samples */ |
689 |
nsamps = 1000*atoi(*++argv); |
690 |
argv++; argc -= 2; |
691 |
continue; |
692 |
default: |
693 |
fputs(progname, stderr); |
694 |
fputs(": unknown option '", stderr); |
695 |
fputs(argv[0], stderr); |
696 |
fputs("'\n", stderr); |
697 |
goto userr; |
698 |
} |
699 |
if ((argc < 1) | (argc > 2)) |
700 |
goto userr; |
701 |
origIDF = argv[0]; |
702 |
revIDF = (argc == 1) ? argv[0] : argv[1]; |
703 |
/* load Input Data File */ |
704 |
our_idf = idf_load(origIDF); |
705 |
if (our_idf == NULL) { |
706 |
fputs(progname, stderr); |
707 |
fputs(": cannot load IDF '", stderr); |
708 |
fputs(origIDF, stderr); |
709 |
fputs("'\n", stderr); |
710 |
return(1); |
711 |
} |
712 |
/* check version (warning) */ |
713 |
if ((pptr = idf_getobject(our_idf, "Version")) != NULL && |
714 |
pptr->flist != NULL && atoi(pptr->flist->val) != 7) { |
715 |
fputs(progname, stderr); |
716 |
fputs(": warning - written for IDF version 7.x, not ", |
717 |
stderr); |
718 |
fputs(pptr->flist->val, stderr); |
719 |
fputc('\n', stderr); |
720 |
} |
721 |
/* remove existing UVFs */ |
722 |
if ((pptr = idf_getobject(our_idf, UVF_PNAME)) != NULL) { |
723 |
IDF_OBJECT *pnext; |
724 |
fputs(progname, stderr); |
725 |
fputs(": removing previous User View Factors\n", stderr); |
726 |
do { |
727 |
pnext = pptr->pnext; |
728 |
idf_delobject(our_idf, pptr); |
729 |
} while ((pptr = pnext) != NULL); |
730 |
} |
731 |
/* add to header */ |
732 |
if (our_idf->hrem == NULL || |
733 |
(i = strlen(our_idf->hrem)-strlen(ADD_HEADER)) < 0 || |
734 |
strcmp(our_idf->hrem+i, ADD_HEADER)) |
735 |
idf_add2hdr(our_idf, ADD_HEADER); |
736 |
/* gather zone surfaces */ |
737 |
for (i = 0; surf_type[i].pname != NULL; i++) |
738 |
for (pptr = idf_getobject(our_idf, surf_type[i].pname); |
739 |
pptr != NULL; pptr = pptr->pnext) { |
740 |
IDF_FIELD *fptr = idf_getfield(pptr, |
741 |
surf_type[i].zone_fld); |
742 |
if (fptr == NULL) { |
743 |
fputs(progname, stderr); |
744 |
fputs(": warning - missing zone field\n", stderr); |
745 |
continue; |
746 |
} |
747 |
if (add2zone(pptr, fptr->val) == NULL) |
748 |
return(1); |
749 |
} |
750 |
/* add subsurfaces */ |
751 |
for (pptr = idf_getobject(our_idf, SUBSURF_PNAME); |
752 |
pptr != NULL; pptr = pptr->pnext) |
753 |
if (add_subsurf(pptr) == NULL) |
754 |
return(1); |
755 |
/* run rcontrib on each zone */ |
756 |
if (!compute_zones()) |
757 |
return(1); |
758 |
/* write out modified IDF */ |
759 |
if (!idf_write(our_idf, revIDF, incl_comments)) { |
760 |
fputs(progname, stderr); |
761 |
fputs(": error writing IDF '", stderr); |
762 |
fputs(revIDF, stderr); |
763 |
fputs("'\n", stderr); |
764 |
return(1); |
765 |
} |
766 |
return(0); /* finito! */ |
767 |
userr: |
768 |
fputs("Usage: ", stderr); |
769 |
fputs(progname, stderr); |
770 |
fputs(" [-c][-s Ksamps] Model.idf [Revised.idf]\n", stderr); |
771 |
return(1); |
772 |
} |