1 |
greg |
2.1 |
#ifndef lint |
2 |
greg |
2.11 |
static const char RCSid[] = "$Id: eplus_adduvf.c,v 2.10 2014/02/13 17:33:37 greg Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
|
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/* |
5 |
|
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* Add User View Factors to EnergyPlus Input Data File |
6 |
|
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* |
7 |
|
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* G.Ward for LBNL |
8 |
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*/ |
9 |
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10 |
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#include <stdlib.h> |
11 |
greg |
2.3 |
#include "rtio.h" |
12 |
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#include "rtmath.h" |
13 |
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#include "random.h" |
14 |
greg |
2.1 |
#include "eplus_idf.h" |
15 |
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#include "triangulate.h" |
16 |
greg |
2.2 |
#include "rtprocess.h" |
17 |
greg |
2.1 |
|
18 |
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#ifndef NSAMPLES |
19 |
greg |
2.7 |
#define NSAMPLES 80000 /* default number of samples */ |
20 |
greg |
2.1 |
#endif |
21 |
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22 |
greg |
2.11 |
#define SURF_EPS 0.0005 /* surface testing epsilon */ |
23 |
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24 |
greg |
2.2 |
char *progname; /* global argv[0] */ |
25 |
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|
26 |
greg |
2.7 |
int nsamps = NSAMPLES; /* number of samples to use */ |
27 |
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28 |
greg |
2.5 |
char temp_octree[128]; /* temporary octree */ |
29 |
greg |
2.2 |
|
30 |
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const char UVF_PNAME[] = |
31 |
greg |
2.10 |
"ZoneProperty:UserViewFactors:bySurfaceName"; |
32 |
greg |
2.1 |
|
33 |
greg |
2.11 |
const char SUBSURF_PNAME[] = |
34 |
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"FenestrationSurface:Detailed"; |
35 |
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|
36 |
greg |
2.1 |
const char ADD_HEADER[] = |
37 |
greg |
2.5 |
"\n!+++ User View Factors computed by Radiance +++!\n\n"; |
38 |
greg |
2.1 |
|
39 |
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#define NAME_FLD 1 /* name field always first? */ |
40 |
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41 |
greg |
2.11 |
#define SS_BASE_FLD 4 /* subsurface base surface */ |
42 |
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#define SS_VERT_FLD 10 /* subsurface vertex count */ |
43 |
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|
44 |
greg |
2.1 |
typedef struct { |
45 |
greg |
2.9 |
const char *pname; /* object type name */ |
46 |
greg |
2.1 |
short zone_fld; /* zone field index */ |
47 |
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short vert_fld; /* vertex field index */ |
48 |
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} SURF_PTYPE; /* surface type we're interested in */ |
49 |
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|
50 |
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const SURF_PTYPE surf_type[] = { |
51 |
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{"BuildingSurface:Detailed", 4, 10}, |
52 |
greg |
2.5 |
{"Floor:Detailed", 3, 9}, |
53 |
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{"RoofCeiling:Detailed", 3, 9}, |
54 |
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{"Wall:Detailed", 3, 9}, |
55 |
greg |
2.1 |
{NULL} |
56 |
greg |
2.7 |
}; /* IDF surface types */ |
57 |
greg |
2.1 |
|
58 |
greg |
2.2 |
typedef struct s_zone { |
59 |
greg |
2.1 |
const char *zname; /* zone name */ |
60 |
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struct s_zone *next; /* next zone in list */ |
61 |
greg |
2.2 |
int nsurf; /* surface count */ |
62 |
greg |
2.11 |
int ntotal; /* surfaces+subsurfaces */ |
63 |
greg |
2.9 |
IDF_OBJECT *pfirst; /* first matching object */ |
64 |
greg |
2.11 |
IDF_OBJECT *plast; /* last before subsurfaces */ |
65 |
greg |
2.2 |
} ZONE; /* a list of collected zone surfaces */ |
66 |
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|
67 |
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ZONE *zone_list = NULL; /* our list of zones */ |
68 |
greg |
2.1 |
|
69 |
greg |
2.11 |
LUTAB zonesurf_lut = /* zone surface lookup table */ |
70 |
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LU_SINIT(NULL,NULL); |
71 |
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72 |
greg |
2.1 |
IDF_LOADED *our_idf = NULL; /* loaded/modified IDF */ |
73 |
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|
74 |
greg |
2.7 |
typedef struct { |
75 |
greg |
2.11 |
FVECT norm; /* surface normal */ |
76 |
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double area; /* surface area */ |
77 |
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int nv; /* number of vertices */ |
78 |
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FVECT vl[3]; /* vertex list (extends struct) */ |
79 |
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} SURFACE; /* a polygonal surface */ |
80 |
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|
81 |
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typedef struct { |
82 |
greg |
2.7 |
FVECT sdir[3]; /* UVW unit sampling vectors */ |
83 |
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double poff; /* W-offset for plane of polygon */ |
84 |
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double area_left; /* area left to sample */ |
85 |
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int samp_left; /* remaining samples */ |
86 |
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int wd; /* output file descriptor */ |
87 |
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} POLYSAMP; /* structure for polygon sampling */ |
88 |
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|
89 |
greg |
2.1 |
/* Create a new zone and push to top of our list */ |
90 |
greg |
2.2 |
static ZONE * |
91 |
greg |
2.9 |
new_zone(const char *zname, IDF_OBJECT *param) |
92 |
greg |
2.1 |
{ |
93 |
greg |
2.2 |
ZONE *znew = (ZONE *)malloc(sizeof(ZONE)); |
94 |
greg |
2.1 |
|
95 |
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if (znew == NULL) |
96 |
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return(NULL); |
97 |
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znew->zname = zname; /* assumes static */ |
98 |
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znew->next = zone_list; |
99 |
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znew->pfirst = znew->plast = param; |
100 |
greg |
2.11 |
znew->ntotal = znew->nsurf = 1; |
101 |
greg |
2.1 |
return(zone_list = znew); |
102 |
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} |
103 |
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104 |
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/* Add the detailed surface (polygon) to the named zone */ |
105 |
greg |
2.2 |
static ZONE * |
106 |
greg |
2.9 |
add2zone(IDF_OBJECT *param, const char *zname) |
107 |
greg |
2.1 |
{ |
108 |
greg |
2.11 |
IDF_FIELD *nfp = idf_getfield(param, NAME_FLD); |
109 |
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ZONE *zptr; |
110 |
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LUENT *lep; |
111 |
greg |
2.1 |
|
112 |
greg |
2.11 |
if (nfp == NULL) { |
113 |
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fputs(progname, stderr); |
114 |
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fputs(": surface missing name field!\n", stderr); |
115 |
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return(NULL); |
116 |
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} |
117 |
greg |
2.1 |
for (zptr = zone_list; zptr != NULL; zptr = zptr->next) |
118 |
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if (!strcmp(zptr->zname, zname)) |
119 |
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break; |
120 |
greg |
2.11 |
if (zptr == NULL) { |
121 |
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zptr = new_zone(zname, param); |
122 |
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} else { /* keep surfaces together */ |
123 |
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if (!idf_movobject(our_idf, param, zptr->plast)) |
124 |
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return(NULL); |
125 |
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zptr->plast = param; |
126 |
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zptr->nsurf++; |
127 |
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zptr->ntotal++; |
128 |
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} |
129 |
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/* add to lookup table */ |
130 |
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lep = lu_find(&zonesurf_lut, nfp->val); |
131 |
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if (lep == NULL) |
132 |
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return(NULL); |
133 |
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if (lep->data != NULL) { |
134 |
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fputs(progname, stderr); |
135 |
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fputs(": duplicate surface name '", stderr); |
136 |
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fputs(nfp->val, stderr); |
137 |
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fputs("'\n", stderr); |
138 |
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return(NULL); |
139 |
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} |
140 |
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lep->key = nfp->val; |
141 |
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lep->data = (char *)zptr; |
142 |
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return(zptr); |
143 |
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} |
144 |
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|
145 |
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/* Add a subsurface by finding its base surface and the corresponding zone */ |
146 |
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static ZONE * |
147 |
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add_subsurf(IDF_OBJECT *param) |
148 |
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{ |
149 |
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IDF_FIELD *bfp = idf_getfield(param, SS_BASE_FLD); |
150 |
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ZONE *zptr; |
151 |
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LUENT *lep; |
152 |
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153 |
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if (bfp == NULL) { |
154 |
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fputs(progname, stderr); |
155 |
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fputs(": missing base field name in subsurface!\n", stderr); |
156 |
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return(NULL); |
157 |
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} |
158 |
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lep = lu_find(&zonesurf_lut, bfp->val); /* find base zone */ |
159 |
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if (lep == NULL || lep->data == NULL) { |
160 |
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fputs(progname, stderr); |
161 |
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fputs(": cannot find referenced base surface '", stderr); |
162 |
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fputs(bfp->val, stderr); |
163 |
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fputs("'\n", stderr); |
164 |
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return(NULL); |
165 |
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} |
166 |
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zptr = (ZONE *)lep->data; /* add this subsurface */ |
167 |
greg |
2.9 |
if (!idf_movobject(our_idf, param, zptr->plast)) |
168 |
greg |
2.1 |
return(NULL); |
169 |
greg |
2.11 |
zptr->ntotal++; |
170 |
greg |
2.1 |
return(zptr); |
171 |
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} |
172 |
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173 |
greg |
2.9 |
/* Return field for vertices in the given object */ |
174 |
greg |
2.3 |
static IDF_FIELD * |
175 |
greg |
2.9 |
get_vlist(IDF_OBJECT *param, const char *zname) |
176 |
greg |
2.2 |
{ |
177 |
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int i = 0; |
178 |
greg |
2.11 |
/* check if subsurface */ |
179 |
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if (!strcmp(param->pname, SUBSURF_PNAME)) { |
180 |
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if (zname != NULL) { |
181 |
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LUENT *lep = lu_find(&zonesurf_lut, |
182 |
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idf_getfield(param,SS_BASE_FLD)->val); |
183 |
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if (strcmp((*(ZONE *)lep->data).zname, zname)) |
184 |
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return(NULL); |
185 |
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} |
186 |
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return(idf_getfield(param, SS_VERT_FLD)); |
187 |
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} |
188 |
greg |
2.2 |
/* check for surface type */ |
189 |
|
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while (strcmp(surf_type[i].pname, param->pname)) |
190 |
|
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if (surf_type[++i].pname == NULL) |
191 |
greg |
2.3 |
return(NULL); |
192 |
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193 |
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if (zname != NULL) { /* matches specified zone? */ |
194 |
greg |
2.11 |
IDF_FIELD *fptr = idf_getfield(param, surf_type[i].zone_fld); |
195 |
greg |
2.3 |
if (fptr == NULL || strcmp(fptr->val, zname)) |
196 |
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return(NULL); |
197 |
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} |
198 |
greg |
2.2 |
/* return field for #verts */ |
199 |
greg |
2.3 |
return(idf_getfield(param, surf_type[i].vert_fld)); |
200 |
greg |
2.2 |
} |
201 |
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|
202 |
greg |
2.11 |
/* Get/allocate surface polygon */ |
203 |
|
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static SURFACE * |
204 |
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get_surface(IDF_FIELD *fptr) |
205 |
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{ |
206 |
|
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SURFACE *surf; |
207 |
|
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int nv; |
208 |
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FVECT e1, e2, vc; |
209 |
|
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int i, j; |
210 |
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/* get number of vertices */ |
211 |
|
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if (fptr == NULL || (nv = atoi(fptr->val)) < 3) { |
212 |
|
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fputs(progname, stderr); |
213 |
|
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fputs(": bad vertex count for surface!\n", stderr); |
214 |
|
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return(NULL); |
215 |
|
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} |
216 |
|
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surf = (SURFACE *)malloc(sizeof(SURFACE)+sizeof(FVECT)*(nv-3)); |
217 |
|
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if (surf == NULL) |
218 |
|
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return(NULL); |
219 |
|
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surf->nv = nv; |
220 |
|
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for (i = nv; i--; ) /* reverse vertex order/orientation */ |
221 |
|
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for (j = 0; j < 3; j++) { |
222 |
|
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fptr = fptr->next; |
223 |
|
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if (fptr == NULL) { |
224 |
|
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fputs(progname, stderr); |
225 |
|
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fputs(": missing vertex in get_surface()\n", stderr); |
226 |
|
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free(surf); |
227 |
|
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return(NULL); |
228 |
|
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} |
229 |
|
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if ((surf->vl[i][j] = atof(fptr->val)) == 0 && |
230 |
|
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!isflt(fptr->val)) { |
231 |
|
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fputs(progname, stderr); |
232 |
|
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fputs(": bad vertex in get_surface()\n", stderr); |
233 |
|
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free(surf); |
234 |
|
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return(NULL); |
235 |
|
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} |
236 |
|
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} |
237 |
|
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/* compute area and normal */ |
238 |
|
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surf->norm[0] = surf->norm[1] = surf->norm[2] = 0; |
239 |
|
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VSUB(e1, surf->vl[1], surf->vl[0]); |
240 |
|
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for (i = 2; i < nv; i++) { |
241 |
|
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VSUB(e2, surf->vl[i], surf->vl[0]); |
242 |
|
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fcross(vc, e1, e2); |
243 |
|
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surf->norm[0] += vc[0]; |
244 |
|
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surf->norm[1] += vc[1]; |
245 |
|
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surf->norm[2] += vc[2]; |
246 |
|
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VCOPY(e1, e2); |
247 |
|
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} |
248 |
|
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surf->area = .5 * normalize(surf->norm); |
249 |
|
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if (surf->area == 0) { |
250 |
|
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fputs(progname, stderr); |
251 |
|
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fputs(": degenerate polygon in get_surface()\n", stderr); |
252 |
|
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free(surf); |
253 |
|
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return(NULL); |
254 |
|
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} |
255 |
|
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return(surf); |
256 |
|
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} |
257 |
|
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|
258 |
greg |
2.2 |
/* Convert surface to Radiance with modifier based on unique name */ |
259 |
|
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static int |
260 |
greg |
2.9 |
rad_surface(IDF_OBJECT *param, FILE *ofp) |
261 |
greg |
2.2 |
{ |
262 |
greg |
2.3 |
const char *sname = idf_getfield(param,NAME_FLD)->val; |
263 |
|
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IDF_FIELD *fptr = get_vlist(param, NULL); |
264 |
greg |
2.11 |
const char **fargs; |
265 |
|
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int nvert, i, j; |
266 |
greg |
2.2 |
|
267 |
greg |
2.3 |
if (fptr == NULL || (nvert = atoi(fptr->val)) < 3) { |
268 |
greg |
2.2 |
fprintf(stderr, "%s: bad surface '%s'\n", progname, sname); |
269 |
|
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return(0); |
270 |
|
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} |
271 |
greg |
2.11 |
fargs = (const char **)malloc(sizeof(const char *)*3*nvert); |
272 |
|
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if (fargs == NULL) |
273 |
|
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return(0); |
274 |
greg |
2.2 |
fprintf(ofp, "\nvoid glow '%s'\n0\n0\n4 1 1 1 0\n", sname); |
275 |
|
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fprintf(ofp, "\n'%s' polygon 's_%s'\n0\n0\n%d\n", sname, sname, 3*nvert); |
276 |
greg |
2.11 |
for (j = nvert; j--; ) { /* get arguments in reverse */ |
277 |
|
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for (i = 0; i < 3; i++) { |
278 |
greg |
2.2 |
fptr = fptr->next; |
279 |
greg |
2.3 |
if (fptr == NULL || !isflt(fptr->val)) { |
280 |
greg |
2.2 |
fprintf(stderr, |
281 |
greg |
2.3 |
"%s: missing/bad vertex for %s '%s'\n", |
282 |
|
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progname, param->pname, sname); |
283 |
greg |
2.2 |
return(0); |
284 |
|
|
} |
285 |
greg |
2.11 |
fargs[3*j + i] = fptr->val; |
286 |
|
|
} |
287 |
|
|
} |
288 |
|
|
for (j = 0; j < nvert; j++) { /* output reversed verts */ |
289 |
|
|
for (i = 0; i < 3; i++) { |
290 |
greg |
2.2 |
fputc('\t', ofp); |
291 |
greg |
2.11 |
fputs(fargs[3*j + i], ofp); |
292 |
greg |
2.2 |
} |
293 |
|
|
fputc('\n', ofp); |
294 |
|
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} |
295 |
greg |
2.11 |
free(fargs); |
296 |
|
|
return(!ferror(ofp)); |
297 |
|
|
} |
298 |
|
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|
299 |
|
|
/* Convert subsurface to Radiance with modifier based on unique name */ |
300 |
|
|
static int |
301 |
|
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rad_subsurface(IDF_OBJECT *param, FILE *ofp) |
302 |
|
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{ |
303 |
|
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const char *sname = idf_getfield(param,NAME_FLD)->val; |
304 |
|
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SURFACE *surf = get_surface(idf_getfield(param,SS_VERT_FLD)); |
305 |
|
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int i; |
306 |
|
|
|
307 |
|
|
if (surf == NULL) { |
308 |
|
|
fprintf(stderr, "%s: bad subsurface '%s'\n", progname, sname); |
309 |
|
|
return(0); |
310 |
|
|
} |
311 |
|
|
fprintf(ofp, "\nvoid glow '%s'\n0\n0\n4 1 1 1 0\n", sname); |
312 |
|
|
fprintf(ofp, "\n'%s' polygon 'ss_%s'\n0\n0\n%d\n", |
313 |
|
|
sname, sname, 3*surf->nv); |
314 |
|
|
for (i = 0; i < surf->nv; i++) { /* offset vertices */ |
315 |
|
|
FVECT vert; |
316 |
|
|
VSUM(vert, surf->vl[i], surf->norm, 2.*SURF_EPS); |
317 |
|
|
fprintf(ofp, "\t%.12f %.12f %.12f\n", vert[0], vert[1], vert[2]); |
318 |
|
|
} |
319 |
|
|
free(surf); |
320 |
greg |
2.2 |
return(!ferror(ofp)); |
321 |
|
|
} |
322 |
|
|
|
323 |
greg |
2.3 |
/* Start rcontrib process */ |
324 |
greg |
2.2 |
static int |
325 |
|
|
start_rcontrib(SUBPROC *pd, ZONE *zp) |
326 |
|
|
{ |
327 |
greg |
2.11 |
#define BASE_AC 6 |
328 |
greg |
2.2 |
static char *base_av[BASE_AC] = { |
329 |
greg |
2.11 |
"rcontrib", "-V+", "-fff", "-h", "-x", "1" |
330 |
greg |
2.2 |
}; |
331 |
|
|
char cbuf[300]; |
332 |
|
|
char **av; |
333 |
|
|
FILE *ofp; |
334 |
greg |
2.9 |
IDF_OBJECT *pptr; |
335 |
greg |
2.11 |
IDF_FIELD *fptr; |
336 |
greg |
2.2 |
int i, n; |
337 |
|
|
/* start oconv command */ |
338 |
|
|
sprintf(cbuf, "oconv - > '%s'", temp_octree); |
339 |
|
|
if ((ofp = popen(cbuf, "w")) == NULL) { |
340 |
|
|
fputs(progname, stderr); |
341 |
|
|
fputs(": cannot open oconv process\n", stderr); |
342 |
|
|
return(0); |
343 |
|
|
} |
344 |
|
|
/* allocate argument list */ |
345 |
greg |
2.11 |
av = (char **)malloc(sizeof(char *)*(BASE_AC+4+2*(zp->ntotal))); |
346 |
greg |
2.2 |
if (av == NULL) |
347 |
|
|
return(0); |
348 |
|
|
for (i = 0; i < BASE_AC; i++) |
349 |
|
|
av[i] = base_av[i]; |
350 |
greg |
2.7 |
sprintf(cbuf, "%d", nsamps); |
351 |
greg |
2.2 |
av[i++] = "-c"; |
352 |
greg |
2.11 |
av[i++] = cbuf; /* add modifiers & surfaces */ |
353 |
|
|
for (n = 0, pptr = zp->pfirst; n < zp->nsurf; n++, pptr = pptr->dnext) { |
354 |
|
|
fptr = idf_getfield(pptr,NAME_FLD); |
355 |
greg |
2.3 |
if (fptr == NULL || !fptr->val[0]) { |
356 |
greg |
2.2 |
fputs(progname, stderr); |
357 |
greg |
2.9 |
fputs(": missing name for surface object\n", stderr); |
358 |
greg |
2.2 |
return(0); |
359 |
|
|
} |
360 |
greg |
2.3 |
if (!rad_surface(pptr, ofp)) /* add surface to octree */ |
361 |
|
|
return(0); |
362 |
greg |
2.2 |
av[i++] = "-m"; |
363 |
greg |
2.3 |
av[i++] = fptr->val; |
364 |
greg |
2.2 |
} |
365 |
greg |
2.11 |
/* now subsurfaces */ |
366 |
|
|
for ( ; n < zp->ntotal; n++, pptr = pptr->dnext) { |
367 |
|
|
fptr = idf_getfield(pptr,NAME_FLD); |
368 |
|
|
if (fptr == NULL || !fptr->val[0]) { |
369 |
|
|
fputs(progname, stderr); |
370 |
|
|
fputs(": missing name for subsurface object\n", stderr); |
371 |
|
|
return(0); |
372 |
|
|
} |
373 |
|
|
if (!rad_subsurface(pptr, ofp)) /* add surface to octree */ |
374 |
|
|
return(0); |
375 |
|
|
av[i++] = "-m"; |
376 |
|
|
av[i++] = fptr->val; |
377 |
|
|
} |
378 |
greg |
2.2 |
if (pclose(ofp) != 0) { /* finish oconv */ |
379 |
|
|
fputs(progname, stderr); |
380 |
|
|
fputs(": error running oconv process\n", stderr); |
381 |
|
|
return(0); |
382 |
|
|
} |
383 |
|
|
av[i++] = temp_octree; /* add final octree argument */ |
384 |
|
|
av[i] = NULL; |
385 |
greg |
2.8 |
if (open_process(pd, av) <= 0) { /* start process */ |
386 |
greg |
2.2 |
fputs(progname, stderr); |
387 |
|
|
fputs(": cannot start rcontrib process\n", stderr); |
388 |
|
|
return(0); |
389 |
|
|
} |
390 |
|
|
free(av); /* all done -- clean up */ |
391 |
|
|
return(1); |
392 |
|
|
#undef BASE_AC |
393 |
|
|
} |
394 |
|
|
|
395 |
greg |
2.3 |
/* Initialize polygon sampling */ |
396 |
|
|
static Vert2_list * |
397 |
greg |
2.11 |
init_poly(POLYSAMP *ps, IDF_FIELD *f0) |
398 |
greg |
2.3 |
{ |
399 |
greg |
2.11 |
SURFACE *surf; |
400 |
|
|
Vert2_list *vl2; |
401 |
|
|
int i; |
402 |
|
|
/* get 3-D polygon vertices */ |
403 |
|
|
if ((surf = get_surface(f0)) == NULL) |
404 |
|
|
return(NULL); |
405 |
|
|
vl2 = polyAlloc(surf->nv); |
406 |
greg |
2.3 |
if (vl2 == NULL) |
407 |
|
|
return(NULL); |
408 |
greg |
2.11 |
/* create X & Y axes */ |
409 |
|
|
VCOPY(ps->sdir[2], surf->norm); |
410 |
|
|
VSUB(ps->sdir[0], surf->vl[1], surf->vl[0]); |
411 |
|
|
if (normalize(ps->sdir[0]) == 0) |
412 |
greg |
2.3 |
return(NULL); |
413 |
|
|
fcross(ps->sdir[1], ps->sdir[2], ps->sdir[0]); |
414 |
|
|
/* compute plane offset */ |
415 |
greg |
2.11 |
ps->poff = DOT(surf->vl[0], ps->sdir[2]); |
416 |
greg |
2.3 |
/* assign 2-D vertices */ |
417 |
greg |
2.11 |
for (i = 0; i < surf->nv; i++) { |
418 |
|
|
vl2->v[i].mX = DOT(surf->vl[i], ps->sdir[0]); |
419 |
|
|
vl2->v[i].mY = DOT(surf->vl[i], ps->sdir[1]); |
420 |
|
|
} |
421 |
|
|
ps->area_left = surf->area; |
422 |
|
|
free(surf); /* it's ready! */ |
423 |
|
|
vl2->p = (void *)ps; |
424 |
greg |
2.3 |
return(vl2); |
425 |
|
|
} |
426 |
|
|
|
427 |
|
|
/* Generate samples on 2-D triangle */ |
428 |
|
|
static int |
429 |
|
|
sample_triangle(const Vert2_list *vl2, int a, int b, int c) |
430 |
|
|
{ |
431 |
|
|
POLYSAMP *ps = (POLYSAMP *)vl2->p; |
432 |
|
|
float *samp; |
433 |
|
|
FVECT orig; |
434 |
|
|
FVECT ab, ac; |
435 |
|
|
double area; |
436 |
|
|
int i, j, ns; |
437 |
|
|
/* compute sampling axes */ |
438 |
|
|
for (i = 3; i--; ) { |
439 |
|
|
orig[i] = vl2->v[a].mX*ps->sdir[0][i] + |
440 |
|
|
vl2->v[a].mY*ps->sdir[1][i] + |
441 |
greg |
2.11 |
(ps->poff+SURF_EPS)*ps->sdir[2][i]; |
442 |
greg |
2.3 |
ab[i] = (vl2->v[b].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
443 |
|
|
(vl2->v[b].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
444 |
|
|
ac[i] = (vl2->v[c].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
445 |
|
|
(vl2->v[c].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
446 |
|
|
} |
447 |
|
|
/* compute number of samples to take */ |
448 |
|
|
area = .5*(vl2->v[a].mX*vl2->v[b].mY - vl2->v[b].mX*vl2->v[a].mY + |
449 |
|
|
vl2->v[b].mX*vl2->v[c].mY - vl2->v[c].mX*vl2->v[b].mY + |
450 |
|
|
vl2->v[c].mX*vl2->v[a].mY - vl2->v[a].mX*vl2->v[c].mY); |
451 |
|
|
if (area < .0) { |
452 |
|
|
fputs(progname, stderr); |
453 |
|
|
fputs(": negative triangle area in sample_triangle()\n", stderr); |
454 |
|
|
return(0); |
455 |
|
|
} |
456 |
|
|
if (area >= ps->area_left) { |
457 |
|
|
ns = ps->samp_left; |
458 |
|
|
ps->area_left = 0; |
459 |
|
|
} else { |
460 |
|
|
ns = (ps->samp_left*area/ps->area_left + .5); |
461 |
|
|
ps->samp_left -= ns; |
462 |
|
|
ps->area_left -= area; |
463 |
|
|
} |
464 |
|
|
if (ns <= 0) /* XXX should be error? */ |
465 |
|
|
return(1); |
466 |
|
|
/* buffer sample rays */ |
467 |
|
|
samp = (float *)malloc(sizeof(float)*6*ns); |
468 |
|
|
if (samp == NULL) |
469 |
|
|
return(0); |
470 |
greg |
2.4 |
for (i = ns; i--; ) { /* stratified Monte Carlo sampling */ |
471 |
greg |
2.3 |
double sv[4]; |
472 |
greg |
2.5 |
FVECT dv; |
473 |
greg |
2.3 |
multisamp(sv, 4, (i+frandom())/(double)ns); |
474 |
|
|
sv[0] *= sv[1] = sqrt(sv[1]); |
475 |
|
|
sv[1] = 1. - sv[1]; |
476 |
|
|
for (j = 3; j--; ) |
477 |
greg |
2.5 |
samp[i*6 + j] = orig[j] + sv[0]*ab[j] + sv[1]*ac[j]; |
478 |
|
|
sv[2] = sqrt(sv[2]); |
479 |
|
|
sv[3] *= 2.*PI; |
480 |
|
|
dv[0] = tcos(sv[3]) * sv[2]; |
481 |
|
|
dv[1] = tsin(sv[3]) * sv[2]; |
482 |
|
|
dv[2] = sqrt(1. - sv[2]*sv[2]); |
483 |
|
|
for (j = 3; j--; ) |
484 |
|
|
samp[i*6 + 3 + j] = dv[0]*ps->sdir[0][j] + |
485 |
|
|
dv[1]*ps->sdir[1][j] + |
486 |
|
|
dv[2]*ps->sdir[2][j] ; |
487 |
greg |
2.3 |
} |
488 |
|
|
/* send to our process */ |
489 |
|
|
writebuf(ps->wd, (char *)samp, sizeof(float)*6*ns); |
490 |
|
|
free(samp); /* that's it! */ |
491 |
|
|
return(1); |
492 |
|
|
} |
493 |
|
|
|
494 |
|
|
/* Sample the given surface */ |
495 |
|
|
static int |
496 |
greg |
2.9 |
sample_surface(IDF_OBJECT *param, int wd) |
497 |
greg |
2.3 |
{ |
498 |
|
|
POLYSAMP psamp; |
499 |
|
|
int nv; |
500 |
|
|
Vert2_list *vlist2; |
501 |
|
|
/* set up our polygon sampler */ |
502 |
greg |
2.11 |
if ((vlist2 = init_poly(&psamp, get_vlist(param, NULL))) == NULL) { |
503 |
greg |
2.5 |
fprintf(stderr, "%s: bad polygon %s '%s'\n", |
504 |
greg |
2.3 |
progname, param->pname, |
505 |
|
|
idf_getfield(param,NAME_FLD)->val); |
506 |
|
|
return(0); |
507 |
|
|
} |
508 |
greg |
2.7 |
psamp.samp_left = nsamps; /* assign samples & destination */ |
509 |
greg |
2.3 |
psamp.wd = wd; |
510 |
greg |
2.11 |
/* hack for subsurface sampling */ |
511 |
|
|
psamp.poff += 2.*SURF_EPS * !strcmp(param->pname, SUBSURF_PNAME); |
512 |
greg |
2.3 |
/* sample each subtriangle */ |
513 |
|
|
if (!polyTriangulate(vlist2, &sample_triangle)) |
514 |
|
|
return(0); |
515 |
|
|
polyFree(vlist2); /* clean up and return */ |
516 |
|
|
return(1); |
517 |
|
|
} |
518 |
|
|
|
519 |
greg |
2.2 |
/* Compute User View Factors using open rcontrib process */ |
520 |
|
|
static int |
521 |
greg |
2.3 |
compute_uvfs(SUBPROC *pd, ZONE *zp) |
522 |
greg |
2.2 |
{ |
523 |
greg |
2.9 |
IDF_OBJECT *pptr, *pout, *pptr1; |
524 |
greg |
2.3 |
float *uvfa; |
525 |
|
|
char uvfbuf[24]; |
526 |
|
|
int n, m; |
527 |
greg |
2.9 |
/* create output object */ |
528 |
|
|
pout = idf_newobject(our_idf, UVF_PNAME, |
529 |
greg |
2.11 |
" ! computed by Radiance\n ", our_idf->plast); |
530 |
greg |
2.3 |
if (pout == NULL) { |
531 |
|
|
fputs(progname, stderr); |
532 |
greg |
2.9 |
fputs(": cannot create new IDF object\n", stderr); |
533 |
greg |
2.3 |
return(0); |
534 |
|
|
} |
535 |
|
|
if (!idf_addfield(pout, zp->zname, |
536 |
|
|
" !- Zone Name\n ")) { |
537 |
|
|
fputs(progname, stderr); |
538 |
|
|
fputs(": cannot add zone name field\n", stderr); |
539 |
|
|
return(0); |
540 |
|
|
} |
541 |
|
|
/* allocate read buffer */ |
542 |
greg |
2.11 |
uvfa = (float *)malloc(sizeof(float)*3*zp->ntotal); |
543 |
greg |
2.3 |
if (uvfa == NULL) |
544 |
|
|
return(0); |
545 |
|
|
/* UVFs from each surface */ |
546 |
greg |
2.11 |
for (n = 0, pptr = zp->pfirst; n < zp->ntotal; n++, pptr = pptr->dnext) { |
547 |
greg |
2.4 |
double vfsum = 0; |
548 |
greg |
2.3 |
/* send samples to rcontrib */ |
549 |
|
|
if (!sample_surface(pptr, pd->w)) |
550 |
|
|
return(0); |
551 |
|
|
/* read results */ |
552 |
greg |
2.11 |
if (readbuf(pd->r, (char *)uvfa, sizeof(float)*3*zp->ntotal) != |
553 |
|
|
sizeof(float)*3*zp->ntotal) { |
554 |
greg |
2.3 |
fputs(progname, stderr); |
555 |
|
|
fputs(": read error from rcontrib process\n", stderr); |
556 |
|
|
return(0); |
557 |
|
|
} |
558 |
|
|
/* append UVF fields */ |
559 |
|
|
for (m = 0, pptr1 = zp->pfirst; |
560 |
greg |
2.11 |
m < zp->ntotal; m++, pptr1 = pptr1->dnext) { |
561 |
greg |
2.4 |
vfsum += uvfa[3*m + 1]; |
562 |
greg |
2.11 |
if (pptr1 == pptr && uvfa[3*m + 1] > .001) |
563 |
|
|
fprintf(stderr, |
564 |
greg |
2.5 |
"%s: warning - non-zero self-VF (%.1f%%) for surface '%s'\n", |
565 |
|
|
progname, 100.*uvfa[3*m + 1], |
566 |
greg |
2.3 |
idf_getfield(pptr,NAME_FLD)->val); |
567 |
greg |
2.6 |
sprintf(uvfbuf, "%.4f", uvfa[3*m + 1]); |
568 |
greg |
2.3 |
if (!idf_addfield(pout, |
569 |
|
|
idf_getfield(pptr,NAME_FLD)->val, NULL) || |
570 |
|
|
!idf_addfield(pout, |
571 |
|
|
idf_getfield(pptr1,NAME_FLD)->val, NULL) || |
572 |
|
|
!idf_addfield(pout, uvfbuf, |
573 |
greg |
2.11 |
(n+m < 2*zp->ntotal-2) ? |
574 |
|
|
"\n " : "\n\n")) { |
575 |
greg |
2.3 |
fputs(progname, stderr); |
576 |
|
|
fputs(": error adding UVF fields\n", stderr); |
577 |
|
|
return(0); |
578 |
|
|
} |
579 |
|
|
} |
580 |
greg |
2.4 |
if (vfsum < 0.95) |
581 |
|
|
fprintf(stderr, |
582 |
|
|
"%s: warning - missing %.1f%% of energy from surface '%s'\n", |
583 |
|
|
progname, 100.*(1.-vfsum), |
584 |
|
|
idf_getfield(pptr,NAME_FLD)->val); |
585 |
greg |
2.3 |
} |
586 |
|
|
free(uvfa); /* clean up and return */ |
587 |
|
|
return(1); |
588 |
greg |
2.2 |
} |
589 |
|
|
|
590 |
greg |
2.1 |
/* Compute zone User View Factors */ |
591 |
|
|
static int |
592 |
|
|
compute_zones(void) |
593 |
|
|
{ |
594 |
greg |
2.2 |
ZONE *zptr; |
595 |
|
|
/* temporary octree name */ |
596 |
greg |
2.5 |
mktemp(strcpy(temp_octree, TEMPLATE)); |
597 |
greg |
2.2 |
/* compute each zone */ |
598 |
|
|
for (zptr = zone_list; zptr != NULL; zptr = zptr->next) { |
599 |
|
|
SUBPROC rcproc; |
600 |
|
|
/* start rcontrib process */ |
601 |
|
|
if (!start_rcontrib(&rcproc, zptr)) |
602 |
|
|
return(0); |
603 |
|
|
/* compute+add view factors */ |
604 |
|
|
if (!compute_uvfs(&rcproc, zptr)) |
605 |
|
|
return(0); |
606 |
|
|
if (close_process(&rcproc) != 0) { |
607 |
|
|
fputs(progname, stderr); |
608 |
|
|
fputs(": bad return status from rcontrib\n", stderr); |
609 |
|
|
return(0); |
610 |
|
|
} |
611 |
|
|
} |
612 |
|
|
unlink(temp_octree); /* remove octree file */ |
613 |
|
|
return(1); |
614 |
greg |
2.1 |
} |
615 |
|
|
|
616 |
|
|
/* Load IDF and compute User View Factors */ |
617 |
|
|
int |
618 |
|
|
main(int argc, char *argv[]) |
619 |
|
|
{ |
620 |
greg |
2.2 |
int incl_comments = 1; |
621 |
greg |
2.1 |
char *origIDF, *revIDF; |
622 |
greg |
2.9 |
IDF_OBJECT *pptr; |
623 |
greg |
2.1 |
int i; |
624 |
|
|
|
625 |
greg |
2.7 |
progname = *argv++; argc--; /* get options if any */ |
626 |
|
|
while (argc > 1 && argv[0][0] == '-') |
627 |
|
|
switch (argv[0][1]) { |
628 |
|
|
case 'c': /* elide comments */ |
629 |
|
|
incl_comments = -1; /* header only */ |
630 |
|
|
argv++; argc--; |
631 |
|
|
continue; |
632 |
|
|
case 's': /* samples */ |
633 |
|
|
nsamps = 1000*atoi(*++argv); |
634 |
|
|
argv++; argc -= 2; |
635 |
|
|
continue; |
636 |
|
|
default: |
637 |
|
|
fputs(progname, stderr); |
638 |
|
|
fputs(": unknown option '", stderr); |
639 |
|
|
fputs(argv[0], stderr); |
640 |
|
|
fputs("'\n", stderr); |
641 |
|
|
goto userr; |
642 |
|
|
} |
643 |
|
|
if ((argc < 1) | (argc > 2)) |
644 |
|
|
goto userr; |
645 |
|
|
origIDF = argv[0]; |
646 |
|
|
revIDF = (argc == 1) ? argv[0] : argv[1]; |
647 |
greg |
2.1 |
/* load Input Data File */ |
648 |
|
|
our_idf = idf_load(origIDF); |
649 |
|
|
if (our_idf == NULL) { |
650 |
greg |
2.2 |
fputs(progname, stderr); |
651 |
greg |
2.1 |
fputs(": cannot load IDF '", stderr); |
652 |
|
|
fputs(origIDF, stderr); |
653 |
|
|
fputs("'\n", stderr); |
654 |
|
|
return(1); |
655 |
|
|
} |
656 |
|
|
/* remove existing UVFs */ |
657 |
greg |
2.9 |
if ((pptr = idf_getobject(our_idf, UVF_PNAME)) != NULL) { |
658 |
|
|
IDF_OBJECT *pnext; |
659 |
greg |
2.2 |
fputs(progname, stderr); |
660 |
greg |
2.1 |
fputs(": removing previous User View Factors\n", stderr); |
661 |
|
|
do { |
662 |
|
|
pnext = pptr->pnext; |
663 |
greg |
2.9 |
idf_delobject(our_idf, pptr); |
664 |
greg |
2.1 |
} while (pnext != NULL); |
665 |
|
|
} |
666 |
|
|
/* add to header */ |
667 |
|
|
if (our_idf->hrem == NULL || |
668 |
|
|
(i = strlen(our_idf->hrem)-strlen(ADD_HEADER)) < 0 || |
669 |
|
|
strcmp(our_idf->hrem+i, ADD_HEADER)) |
670 |
|
|
idf_add2hdr(our_idf, ADD_HEADER); |
671 |
|
|
/* gather zone surfaces */ |
672 |
|
|
for (i = 0; surf_type[i].pname != NULL; i++) |
673 |
greg |
2.9 |
for (pptr = idf_getobject(our_idf, surf_type[i].pname); |
674 |
greg |
2.1 |
pptr != NULL; pptr = pptr->pnext) { |
675 |
|
|
IDF_FIELD *fptr = idf_getfield(pptr, |
676 |
|
|
surf_type[i].zone_fld); |
677 |
|
|
if (fptr == NULL) { |
678 |
greg |
2.2 |
fputs(progname, stderr); |
679 |
|
|
fputs(": warning - missing zone field\n", stderr); |
680 |
greg |
2.1 |
continue; |
681 |
|
|
} |
682 |
greg |
2.3 |
if (add2zone(pptr, fptr->val) == NULL) |
683 |
greg |
2.1 |
return(1); |
684 |
|
|
} |
685 |
greg |
2.11 |
/* add subsurfaces */ |
686 |
|
|
for (pptr = idf_getobject(our_idf, SUBSURF_PNAME); |
687 |
|
|
pptr != NULL; pptr = pptr->pnext) |
688 |
|
|
if (add_subsurf(pptr) == NULL) |
689 |
|
|
return(1); |
690 |
greg |
2.1 |
/* run rcontrib on each zone */ |
691 |
|
|
if (!compute_zones()) |
692 |
|
|
return(1); |
693 |
|
|
/* write out modified IDF */ |
694 |
greg |
2.2 |
if (!idf_write(our_idf, revIDF, incl_comments)) { |
695 |
|
|
fputs(progname, stderr); |
696 |
greg |
2.1 |
fputs(": error writing IDF '", stderr); |
697 |
|
|
fputs(revIDF, stderr); |
698 |
|
|
fputs("'\n", stderr); |
699 |
|
|
return(1); |
700 |
|
|
} |
701 |
|
|
return(0); /* finito! */ |
702 |
greg |
2.7 |
userr: |
703 |
|
|
fputs("Usage: ", stderr); |
704 |
|
|
fputs(progname, stderr); |
705 |
|
|
fputs(" [-c][-s Ksamps] Model.idf [Revised.idf]\n", stderr); |
706 |
|
|
return(1); |
707 |
greg |
2.1 |
} |