1 |
greg |
2.1 |
#ifndef lint |
2 |
greg |
2.12 |
static const char RCSid[] = "$Id: eplus_adduvf.c,v 2.11 2014/02/15 01:31:36 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 |
2.12 |
float *area_redu; /* subsurface area per surf. */ |
66 |
greg |
2.2 |
} ZONE; /* a list of collected zone surfaces */ |
67 |
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|
68 |
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ZONE *zone_list = NULL; /* our list of zones */ |
69 |
greg |
2.1 |
|
70 |
greg |
2.11 |
LUTAB zonesurf_lut = /* zone surface lookup table */ |
71 |
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LU_SINIT(NULL,NULL); |
72 |
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73 |
greg |
2.1 |
IDF_LOADED *our_idf = NULL; /* loaded/modified IDF */ |
74 |
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|
75 |
greg |
2.7 |
typedef struct { |
76 |
greg |
2.11 |
FVECT norm; /* surface normal */ |
77 |
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double area; /* surface area */ |
78 |
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int nv; /* number of vertices */ |
79 |
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FVECT vl[3]; /* vertex list (extends struct) */ |
80 |
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} SURFACE; /* a polygonal surface */ |
81 |
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82 |
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typedef struct { |
83 |
greg |
2.7 |
FVECT sdir[3]; /* UVW unit sampling vectors */ |
84 |
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double poff; /* W-offset for plane of polygon */ |
85 |
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double area_left; /* area left to sample */ |
86 |
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int samp_left; /* remaining samples */ |
87 |
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int wd; /* output file descriptor */ |
88 |
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} POLYSAMP; /* structure for polygon sampling */ |
89 |
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|
90 |
greg |
2.1 |
/* Create a new zone and push to top of our list */ |
91 |
greg |
2.2 |
static ZONE * |
92 |
greg |
2.9 |
new_zone(const char *zname, IDF_OBJECT *param) |
93 |
greg |
2.1 |
{ |
94 |
greg |
2.2 |
ZONE *znew = (ZONE *)malloc(sizeof(ZONE)); |
95 |
greg |
2.1 |
|
96 |
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if (znew == NULL) |
97 |
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return(NULL); |
98 |
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znew->zname = zname; /* assumes static */ |
99 |
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znew->next = zone_list; |
100 |
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znew->pfirst = znew->plast = param; |
101 |
greg |
2.11 |
znew->ntotal = znew->nsurf = 1; |
102 |
greg |
2.12 |
znew->area_redu = NULL; |
103 |
greg |
2.1 |
return(zone_list = znew); |
104 |
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} |
105 |
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106 |
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/* Add the detailed surface (polygon) to the named zone */ |
107 |
greg |
2.2 |
static ZONE * |
108 |
greg |
2.9 |
add2zone(IDF_OBJECT *param, const char *zname) |
109 |
greg |
2.1 |
{ |
110 |
greg |
2.11 |
IDF_FIELD *nfp = idf_getfield(param, NAME_FLD); |
111 |
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ZONE *zptr; |
112 |
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LUENT *lep; |
113 |
greg |
2.1 |
|
114 |
greg |
2.11 |
if (nfp == NULL) { |
115 |
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fputs(progname, stderr); |
116 |
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fputs(": surface missing name field!\n", stderr); |
117 |
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return(NULL); |
118 |
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} |
119 |
greg |
2.1 |
for (zptr = zone_list; zptr != NULL; zptr = zptr->next) |
120 |
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if (!strcmp(zptr->zname, zname)) |
121 |
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break; |
122 |
greg |
2.11 |
if (zptr == NULL) { |
123 |
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zptr = new_zone(zname, param); |
124 |
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} else { /* keep surfaces together */ |
125 |
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if (!idf_movobject(our_idf, param, zptr->plast)) |
126 |
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return(NULL); |
127 |
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zptr->plast = param; |
128 |
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zptr->nsurf++; |
129 |
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zptr->ntotal++; |
130 |
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} |
131 |
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/* add to lookup table */ |
132 |
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lep = lu_find(&zonesurf_lut, nfp->val); |
133 |
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if (lep == NULL) |
134 |
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return(NULL); |
135 |
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if (lep->data != NULL) { |
136 |
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fputs(progname, stderr); |
137 |
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fputs(": duplicate surface name '", stderr); |
138 |
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fputs(nfp->val, stderr); |
139 |
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fputs("'\n", stderr); |
140 |
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return(NULL); |
141 |
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} |
142 |
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lep->key = nfp->val; |
143 |
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lep->data = (char *)zptr; |
144 |
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return(zptr); |
145 |
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} |
146 |
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|
147 |
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/* Add a subsurface by finding its base surface and the corresponding zone */ |
148 |
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static ZONE * |
149 |
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add_subsurf(IDF_OBJECT *param) |
150 |
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{ |
151 |
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IDF_FIELD *bfp = idf_getfield(param, SS_BASE_FLD); |
152 |
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ZONE *zptr; |
153 |
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LUENT *lep; |
154 |
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155 |
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if (bfp == NULL) { |
156 |
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fputs(progname, stderr); |
157 |
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fputs(": missing base field name in subsurface!\n", stderr); |
158 |
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return(NULL); |
159 |
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} |
160 |
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lep = lu_find(&zonesurf_lut, bfp->val); /* find base zone */ |
161 |
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if (lep == NULL || lep->data == NULL) { |
162 |
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fputs(progname, stderr); |
163 |
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fputs(": cannot find referenced base surface '", stderr); |
164 |
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fputs(bfp->val, stderr); |
165 |
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fputs("'\n", stderr); |
166 |
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return(NULL); |
167 |
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} |
168 |
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zptr = (ZONE *)lep->data; /* add this subsurface */ |
169 |
greg |
2.9 |
if (!idf_movobject(our_idf, param, zptr->plast)) |
170 |
greg |
2.1 |
return(NULL); |
171 |
greg |
2.11 |
zptr->ntotal++; |
172 |
greg |
2.1 |
return(zptr); |
173 |
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} |
174 |
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|
175 |
greg |
2.9 |
/* Return field for vertices in the given object */ |
176 |
greg |
2.3 |
static IDF_FIELD * |
177 |
greg |
2.9 |
get_vlist(IDF_OBJECT *param, const char *zname) |
178 |
greg |
2.2 |
{ |
179 |
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int i = 0; |
180 |
greg |
2.11 |
/* check if subsurface */ |
181 |
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if (!strcmp(param->pname, SUBSURF_PNAME)) { |
182 |
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if (zname != NULL) { |
183 |
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LUENT *lep = lu_find(&zonesurf_lut, |
184 |
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idf_getfield(param,SS_BASE_FLD)->val); |
185 |
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if (strcmp((*(ZONE *)lep->data).zname, zname)) |
186 |
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return(NULL); |
187 |
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} |
188 |
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return(idf_getfield(param, SS_VERT_FLD)); |
189 |
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} |
190 |
greg |
2.2 |
/* check for surface type */ |
191 |
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while (strcmp(surf_type[i].pname, param->pname)) |
192 |
|
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if (surf_type[++i].pname == NULL) |
193 |
greg |
2.3 |
return(NULL); |
194 |
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195 |
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if (zname != NULL) { /* matches specified zone? */ |
196 |
greg |
2.11 |
IDF_FIELD *fptr = idf_getfield(param, surf_type[i].zone_fld); |
197 |
greg |
2.3 |
if (fptr == NULL || strcmp(fptr->val, zname)) |
198 |
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return(NULL); |
199 |
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} |
200 |
greg |
2.2 |
/* return field for #verts */ |
201 |
greg |
2.3 |
return(idf_getfield(param, surf_type[i].vert_fld)); |
202 |
greg |
2.2 |
} |
203 |
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|
204 |
greg |
2.11 |
/* Get/allocate surface polygon */ |
205 |
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static SURFACE * |
206 |
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get_surface(IDF_FIELD *fptr) |
207 |
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{ |
208 |
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SURFACE *surf; |
209 |
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int nv; |
210 |
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FVECT e1, e2, vc; |
211 |
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int i, j; |
212 |
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/* get number of vertices */ |
213 |
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if (fptr == NULL || (nv = atoi(fptr->val)) < 3) { |
214 |
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fputs(progname, stderr); |
215 |
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fputs(": bad vertex count for surface!\n", stderr); |
216 |
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return(NULL); |
217 |
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} |
218 |
|
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surf = (SURFACE *)malloc(sizeof(SURFACE)+sizeof(FVECT)*(nv-3)); |
219 |
|
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if (surf == NULL) |
220 |
|
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return(NULL); |
221 |
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surf->nv = nv; |
222 |
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for (i = nv; i--; ) /* reverse vertex order/orientation */ |
223 |
|
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for (j = 0; j < 3; j++) { |
224 |
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fptr = fptr->next; |
225 |
|
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if (fptr == NULL) { |
226 |
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fputs(progname, stderr); |
227 |
|
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fputs(": missing vertex in get_surface()\n", stderr); |
228 |
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free(surf); |
229 |
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return(NULL); |
230 |
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} |
231 |
|
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if ((surf->vl[i][j] = atof(fptr->val)) == 0 && |
232 |
|
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!isflt(fptr->val)) { |
233 |
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fputs(progname, stderr); |
234 |
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fputs(": bad vertex in get_surface()\n", stderr); |
235 |
|
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free(surf); |
236 |
|
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return(NULL); |
237 |
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} |
238 |
|
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} |
239 |
|
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/* compute area and normal */ |
240 |
|
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surf->norm[0] = surf->norm[1] = surf->norm[2] = 0; |
241 |
|
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VSUB(e1, surf->vl[1], surf->vl[0]); |
242 |
|
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for (i = 2; i < nv; i++) { |
243 |
|
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VSUB(e2, surf->vl[i], surf->vl[0]); |
244 |
|
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fcross(vc, e1, e2); |
245 |
|
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surf->norm[0] += vc[0]; |
246 |
|
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surf->norm[1] += vc[1]; |
247 |
|
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surf->norm[2] += vc[2]; |
248 |
|
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VCOPY(e1, e2); |
249 |
|
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} |
250 |
|
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surf->area = .5 * normalize(surf->norm); |
251 |
|
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if (surf->area == 0) { |
252 |
|
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fputs(progname, stderr); |
253 |
|
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fputs(": degenerate polygon in get_surface()\n", stderr); |
254 |
|
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free(surf); |
255 |
|
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return(NULL); |
256 |
|
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} |
257 |
|
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return(surf); |
258 |
|
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} |
259 |
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|
260 |
greg |
2.2 |
/* Convert surface to Radiance with modifier based on unique name */ |
261 |
|
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static int |
262 |
greg |
2.9 |
rad_surface(IDF_OBJECT *param, FILE *ofp) |
263 |
greg |
2.2 |
{ |
264 |
greg |
2.3 |
const char *sname = idf_getfield(param,NAME_FLD)->val; |
265 |
|
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IDF_FIELD *fptr = get_vlist(param, NULL); |
266 |
greg |
2.11 |
const char **fargs; |
267 |
|
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int nvert, i, j; |
268 |
greg |
2.2 |
|
269 |
greg |
2.3 |
if (fptr == NULL || (nvert = atoi(fptr->val)) < 3) { |
270 |
greg |
2.2 |
fprintf(stderr, "%s: bad surface '%s'\n", progname, sname); |
271 |
|
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return(0); |
272 |
|
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} |
273 |
greg |
2.11 |
fargs = (const char **)malloc(sizeof(const char *)*3*nvert); |
274 |
|
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if (fargs == NULL) |
275 |
|
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return(0); |
276 |
greg |
2.2 |
fprintf(ofp, "\nvoid glow '%s'\n0\n0\n4 1 1 1 0\n", sname); |
277 |
|
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fprintf(ofp, "\n'%s' polygon 's_%s'\n0\n0\n%d\n", sname, sname, 3*nvert); |
278 |
greg |
2.11 |
for (j = nvert; j--; ) { /* get arguments in reverse */ |
279 |
|
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for (i = 0; i < 3; i++) { |
280 |
greg |
2.2 |
fptr = fptr->next; |
281 |
greg |
2.3 |
if (fptr == NULL || !isflt(fptr->val)) { |
282 |
greg |
2.2 |
fprintf(stderr, |
283 |
greg |
2.3 |
"%s: missing/bad vertex for %s '%s'\n", |
284 |
|
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progname, param->pname, sname); |
285 |
greg |
2.2 |
return(0); |
286 |
|
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} |
287 |
greg |
2.11 |
fargs[3*j + i] = fptr->val; |
288 |
|
|
} |
289 |
|
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} |
290 |
|
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for (j = 0; j < nvert; j++) { /* output reversed verts */ |
291 |
|
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for (i = 0; i < 3; i++) { |
292 |
greg |
2.2 |
fputc('\t', ofp); |
293 |
greg |
2.11 |
fputs(fargs[3*j + i], ofp); |
294 |
greg |
2.2 |
} |
295 |
|
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fputc('\n', ofp); |
296 |
|
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} |
297 |
greg |
2.11 |
free(fargs); |
298 |
|
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return(!ferror(ofp)); |
299 |
|
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} |
300 |
|
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|
301 |
|
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/* Convert subsurface to Radiance with modifier based on unique name */ |
302 |
greg |
2.12 |
static double |
303 |
greg |
2.11 |
rad_subsurface(IDF_OBJECT *param, FILE *ofp) |
304 |
|
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{ |
305 |
|
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const char *sname = idf_getfield(param,NAME_FLD)->val; |
306 |
|
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SURFACE *surf = get_surface(idf_getfield(param,SS_VERT_FLD)); |
307 |
greg |
2.12 |
double area; |
308 |
greg |
2.11 |
int i; |
309 |
|
|
|
310 |
|
|
if (surf == NULL) { |
311 |
|
|
fprintf(stderr, "%s: bad subsurface '%s'\n", progname, sname); |
312 |
greg |
2.12 |
return(-1.); |
313 |
greg |
2.11 |
} |
314 |
|
|
fprintf(ofp, "\nvoid glow '%s'\n0\n0\n4 1 1 1 0\n", sname); |
315 |
|
|
fprintf(ofp, "\n'%s' polygon 'ss_%s'\n0\n0\n%d\n", |
316 |
|
|
sname, sname, 3*surf->nv); |
317 |
|
|
for (i = 0; i < surf->nv; i++) { /* offset vertices */ |
318 |
|
|
FVECT vert; |
319 |
|
|
VSUM(vert, surf->vl[i], surf->norm, 2.*SURF_EPS); |
320 |
|
|
fprintf(ofp, "\t%.12f %.12f %.12f\n", vert[0], vert[1], vert[2]); |
321 |
|
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} |
322 |
greg |
2.12 |
area = surf->area; |
323 |
greg |
2.11 |
free(surf); |
324 |
greg |
2.12 |
if (ferror(ofp)) |
325 |
|
|
return(-1.); |
326 |
|
|
return(area); |
327 |
greg |
2.2 |
} |
328 |
|
|
|
329 |
greg |
2.3 |
/* Start rcontrib process */ |
330 |
greg |
2.2 |
static int |
331 |
|
|
start_rcontrib(SUBPROC *pd, ZONE *zp) |
332 |
|
|
{ |
333 |
greg |
2.11 |
#define BASE_AC 6 |
334 |
greg |
2.2 |
static char *base_av[BASE_AC] = { |
335 |
greg |
2.11 |
"rcontrib", "-V+", "-fff", "-h", "-x", "1" |
336 |
greg |
2.2 |
}; |
337 |
|
|
char cbuf[300]; |
338 |
|
|
char **av; |
339 |
|
|
FILE *ofp; |
340 |
greg |
2.9 |
IDF_OBJECT *pptr; |
341 |
greg |
2.11 |
IDF_FIELD *fptr; |
342 |
greg |
2.12 |
int i, j, n; |
343 |
greg |
2.2 |
/* start oconv command */ |
344 |
|
|
sprintf(cbuf, "oconv - > '%s'", temp_octree); |
345 |
|
|
if ((ofp = popen(cbuf, "w")) == NULL) { |
346 |
|
|
fputs(progname, stderr); |
347 |
|
|
fputs(": cannot open oconv process\n", stderr); |
348 |
|
|
return(0); |
349 |
|
|
} |
350 |
|
|
/* allocate argument list */ |
351 |
greg |
2.11 |
av = (char **)malloc(sizeof(char *)*(BASE_AC+4+2*(zp->ntotal))); |
352 |
greg |
2.2 |
if (av == NULL) |
353 |
|
|
return(0); |
354 |
|
|
for (i = 0; i < BASE_AC; i++) |
355 |
|
|
av[i] = base_av[i]; |
356 |
greg |
2.7 |
sprintf(cbuf, "%d", nsamps); |
357 |
greg |
2.2 |
av[i++] = "-c"; |
358 |
greg |
2.11 |
av[i++] = cbuf; /* add modifiers & surfaces */ |
359 |
|
|
for (n = 0, pptr = zp->pfirst; n < zp->nsurf; n++, pptr = pptr->dnext) { |
360 |
|
|
fptr = idf_getfield(pptr,NAME_FLD); |
361 |
greg |
2.3 |
if (fptr == NULL || !fptr->val[0]) { |
362 |
greg |
2.2 |
fputs(progname, stderr); |
363 |
greg |
2.9 |
fputs(": missing name for surface object\n", stderr); |
364 |
greg |
2.2 |
return(0); |
365 |
|
|
} |
366 |
greg |
2.3 |
if (!rad_surface(pptr, ofp)) /* add surface to octree */ |
367 |
|
|
return(0); |
368 |
greg |
2.2 |
av[i++] = "-m"; |
369 |
greg |
2.3 |
av[i++] = fptr->val; |
370 |
greg |
2.2 |
} |
371 |
greg |
2.11 |
/* now subsurfaces */ |
372 |
greg |
2.12 |
if (zp->ntotal > zp->nsurf) { |
373 |
|
|
if (zp->area_redu != NULL) |
374 |
|
|
memset(zp->area_redu, 0, sizeof(float)*zp->nsurf); |
375 |
|
|
else if ((zp->area_redu = (float *)calloc(zp->nsurf, |
376 |
|
|
sizeof(float))) == NULL) |
377 |
|
|
return(0); |
378 |
|
|
} |
379 |
greg |
2.11 |
for ( ; n < zp->ntotal; n++, pptr = pptr->dnext) { |
380 |
greg |
2.12 |
double ssarea; |
381 |
|
|
const char *bname; |
382 |
|
|
IDF_OBJECT *pptr1; |
383 |
greg |
2.11 |
fptr = idf_getfield(pptr,NAME_FLD); |
384 |
|
|
if (fptr == NULL || !fptr->val[0]) { |
385 |
|
|
fputs(progname, stderr); |
386 |
|
|
fputs(": missing name for subsurface object\n", stderr); |
387 |
|
|
return(0); |
388 |
|
|
} |
389 |
greg |
2.12 |
/* add subsurface to octree */ |
390 |
|
|
if ((ssarea = rad_subsurface(pptr, ofp)) < 0) |
391 |
greg |
2.11 |
return(0); |
392 |
greg |
2.12 |
/* mark area for subtraction */ |
393 |
|
|
bname = idf_getfield(pptr,SS_BASE_FLD)->val; |
394 |
|
|
for (j = 0, pptr1 = zp->pfirst; |
395 |
|
|
j < zp->nsurf; j++, pptr1 = pptr1->dnext) |
396 |
|
|
if (!strcmp(idf_getfield(pptr1,NAME_FLD)->val, bname)) { |
397 |
|
|
zp->area_redu[j] += ssarea; |
398 |
|
|
break; |
399 |
|
|
} |
400 |
greg |
2.11 |
av[i++] = "-m"; |
401 |
|
|
av[i++] = fptr->val; |
402 |
|
|
} |
403 |
greg |
2.2 |
if (pclose(ofp) != 0) { /* finish oconv */ |
404 |
|
|
fputs(progname, stderr); |
405 |
|
|
fputs(": error running oconv process\n", stderr); |
406 |
|
|
return(0); |
407 |
|
|
} |
408 |
|
|
av[i++] = temp_octree; /* add final octree argument */ |
409 |
|
|
av[i] = NULL; |
410 |
greg |
2.8 |
if (open_process(pd, av) <= 0) { /* start process */ |
411 |
greg |
2.2 |
fputs(progname, stderr); |
412 |
|
|
fputs(": cannot start rcontrib process\n", stderr); |
413 |
|
|
return(0); |
414 |
|
|
} |
415 |
|
|
free(av); /* all done -- clean up */ |
416 |
|
|
return(1); |
417 |
|
|
#undef BASE_AC |
418 |
|
|
} |
419 |
|
|
|
420 |
greg |
2.3 |
/* Initialize polygon sampling */ |
421 |
|
|
static Vert2_list * |
422 |
greg |
2.11 |
init_poly(POLYSAMP *ps, IDF_FIELD *f0) |
423 |
greg |
2.3 |
{ |
424 |
greg |
2.11 |
SURFACE *surf; |
425 |
|
|
Vert2_list *vl2; |
426 |
|
|
int i; |
427 |
|
|
/* get 3-D polygon vertices */ |
428 |
|
|
if ((surf = get_surface(f0)) == NULL) |
429 |
|
|
return(NULL); |
430 |
|
|
vl2 = polyAlloc(surf->nv); |
431 |
greg |
2.3 |
if (vl2 == NULL) |
432 |
|
|
return(NULL); |
433 |
greg |
2.11 |
/* create X & Y axes */ |
434 |
|
|
VCOPY(ps->sdir[2], surf->norm); |
435 |
|
|
VSUB(ps->sdir[0], surf->vl[1], surf->vl[0]); |
436 |
|
|
if (normalize(ps->sdir[0]) == 0) |
437 |
greg |
2.3 |
return(NULL); |
438 |
|
|
fcross(ps->sdir[1], ps->sdir[2], ps->sdir[0]); |
439 |
|
|
/* compute plane offset */ |
440 |
greg |
2.11 |
ps->poff = DOT(surf->vl[0], ps->sdir[2]); |
441 |
greg |
2.3 |
/* assign 2-D vertices */ |
442 |
greg |
2.11 |
for (i = 0; i < surf->nv; i++) { |
443 |
|
|
vl2->v[i].mX = DOT(surf->vl[i], ps->sdir[0]); |
444 |
|
|
vl2->v[i].mY = DOT(surf->vl[i], ps->sdir[1]); |
445 |
|
|
} |
446 |
|
|
ps->area_left = surf->area; |
447 |
|
|
free(surf); /* it's ready! */ |
448 |
|
|
vl2->p = (void *)ps; |
449 |
greg |
2.3 |
return(vl2); |
450 |
|
|
} |
451 |
|
|
|
452 |
|
|
/* Generate samples on 2-D triangle */ |
453 |
|
|
static int |
454 |
|
|
sample_triangle(const Vert2_list *vl2, int a, int b, int c) |
455 |
|
|
{ |
456 |
|
|
POLYSAMP *ps = (POLYSAMP *)vl2->p; |
457 |
|
|
float *samp; |
458 |
|
|
FVECT orig; |
459 |
|
|
FVECT ab, ac; |
460 |
|
|
double area; |
461 |
|
|
int i, j, ns; |
462 |
|
|
/* compute sampling axes */ |
463 |
|
|
for (i = 3; i--; ) { |
464 |
|
|
orig[i] = vl2->v[a].mX*ps->sdir[0][i] + |
465 |
|
|
vl2->v[a].mY*ps->sdir[1][i] + |
466 |
greg |
2.11 |
(ps->poff+SURF_EPS)*ps->sdir[2][i]; |
467 |
greg |
2.3 |
ab[i] = (vl2->v[b].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
468 |
|
|
(vl2->v[b].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
469 |
|
|
ac[i] = (vl2->v[c].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
470 |
|
|
(vl2->v[c].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
471 |
|
|
} |
472 |
|
|
/* compute number of samples to take */ |
473 |
|
|
area = .5*(vl2->v[a].mX*vl2->v[b].mY - vl2->v[b].mX*vl2->v[a].mY + |
474 |
|
|
vl2->v[b].mX*vl2->v[c].mY - vl2->v[c].mX*vl2->v[b].mY + |
475 |
|
|
vl2->v[c].mX*vl2->v[a].mY - vl2->v[a].mX*vl2->v[c].mY); |
476 |
|
|
if (area < .0) { |
477 |
|
|
fputs(progname, stderr); |
478 |
|
|
fputs(": negative triangle area in sample_triangle()\n", stderr); |
479 |
|
|
return(0); |
480 |
|
|
} |
481 |
|
|
if (area >= ps->area_left) { |
482 |
|
|
ns = ps->samp_left; |
483 |
|
|
ps->area_left = 0; |
484 |
|
|
} else { |
485 |
|
|
ns = (ps->samp_left*area/ps->area_left + .5); |
486 |
|
|
ps->samp_left -= ns; |
487 |
|
|
ps->area_left -= area; |
488 |
|
|
} |
489 |
|
|
if (ns <= 0) /* XXX should be error? */ |
490 |
|
|
return(1); |
491 |
|
|
/* buffer sample rays */ |
492 |
|
|
samp = (float *)malloc(sizeof(float)*6*ns); |
493 |
|
|
if (samp == NULL) |
494 |
|
|
return(0); |
495 |
greg |
2.4 |
for (i = ns; i--; ) { /* stratified Monte Carlo sampling */ |
496 |
greg |
2.3 |
double sv[4]; |
497 |
greg |
2.5 |
FVECT dv; |
498 |
greg |
2.3 |
multisamp(sv, 4, (i+frandom())/(double)ns); |
499 |
|
|
sv[0] *= sv[1] = sqrt(sv[1]); |
500 |
|
|
sv[1] = 1. - sv[1]; |
501 |
|
|
for (j = 3; j--; ) |
502 |
greg |
2.5 |
samp[i*6 + j] = orig[j] + sv[0]*ab[j] + sv[1]*ac[j]; |
503 |
|
|
sv[2] = sqrt(sv[2]); |
504 |
|
|
sv[3] *= 2.*PI; |
505 |
|
|
dv[0] = tcos(sv[3]) * sv[2]; |
506 |
|
|
dv[1] = tsin(sv[3]) * sv[2]; |
507 |
|
|
dv[2] = sqrt(1. - sv[2]*sv[2]); |
508 |
|
|
for (j = 3; j--; ) |
509 |
|
|
samp[i*6 + 3 + j] = dv[0]*ps->sdir[0][j] + |
510 |
|
|
dv[1]*ps->sdir[1][j] + |
511 |
|
|
dv[2]*ps->sdir[2][j] ; |
512 |
greg |
2.3 |
} |
513 |
|
|
/* send to our process */ |
514 |
|
|
writebuf(ps->wd, (char *)samp, sizeof(float)*6*ns); |
515 |
|
|
free(samp); /* that's it! */ |
516 |
|
|
return(1); |
517 |
|
|
} |
518 |
|
|
|
519 |
|
|
/* Sample the given surface */ |
520 |
greg |
2.12 |
static double |
521 |
greg |
2.9 |
sample_surface(IDF_OBJECT *param, int wd) |
522 |
greg |
2.3 |
{ |
523 |
|
|
POLYSAMP psamp; |
524 |
greg |
2.12 |
double area; |
525 |
greg |
2.3 |
int nv; |
526 |
|
|
Vert2_list *vlist2; |
527 |
|
|
/* set up our polygon sampler */ |
528 |
greg |
2.11 |
if ((vlist2 = init_poly(&psamp, get_vlist(param, NULL))) == NULL) { |
529 |
greg |
2.5 |
fprintf(stderr, "%s: bad polygon %s '%s'\n", |
530 |
greg |
2.3 |
progname, param->pname, |
531 |
|
|
idf_getfield(param,NAME_FLD)->val); |
532 |
greg |
2.12 |
return(-1.); |
533 |
greg |
2.3 |
} |
534 |
greg |
2.7 |
psamp.samp_left = nsamps; /* assign samples & destination */ |
535 |
greg |
2.3 |
psamp.wd = wd; |
536 |
greg |
2.11 |
/* hack for subsurface sampling */ |
537 |
|
|
psamp.poff += 2.*SURF_EPS * !strcmp(param->pname, SUBSURF_PNAME); |
538 |
greg |
2.12 |
|
539 |
|
|
area = psamp.area_left; /* remember starting surface area */ |
540 |
greg |
2.3 |
/* sample each subtriangle */ |
541 |
|
|
if (!polyTriangulate(vlist2, &sample_triangle)) |
542 |
greg |
2.12 |
return(-1.); |
543 |
greg |
2.3 |
polyFree(vlist2); /* clean up and return */ |
544 |
greg |
2.12 |
return(area); |
545 |
greg |
2.3 |
} |
546 |
|
|
|
547 |
greg |
2.2 |
/* Compute User View Factors using open rcontrib process */ |
548 |
|
|
static int |
549 |
greg |
2.3 |
compute_uvfs(SUBPROC *pd, ZONE *zp) |
550 |
greg |
2.2 |
{ |
551 |
greg |
2.9 |
IDF_OBJECT *pptr, *pout, *pptr1; |
552 |
greg |
2.3 |
float *uvfa; |
553 |
|
|
char uvfbuf[24]; |
554 |
|
|
int n, m; |
555 |
greg |
2.9 |
/* create output object */ |
556 |
|
|
pout = idf_newobject(our_idf, UVF_PNAME, |
557 |
greg |
2.11 |
" ! computed by Radiance\n ", our_idf->plast); |
558 |
greg |
2.3 |
if (pout == NULL) { |
559 |
|
|
fputs(progname, stderr); |
560 |
greg |
2.9 |
fputs(": cannot create new IDF object\n", stderr); |
561 |
greg |
2.3 |
return(0); |
562 |
|
|
} |
563 |
|
|
if (!idf_addfield(pout, zp->zname, |
564 |
|
|
" !- Zone Name\n ")) { |
565 |
|
|
fputs(progname, stderr); |
566 |
|
|
fputs(": cannot add zone name field\n", stderr); |
567 |
|
|
return(0); |
568 |
|
|
} |
569 |
|
|
/* allocate read buffer */ |
570 |
greg |
2.11 |
uvfa = (float *)malloc(sizeof(float)*3*zp->ntotal); |
571 |
greg |
2.3 |
if (uvfa == NULL) |
572 |
|
|
return(0); |
573 |
|
|
/* UVFs from each surface */ |
574 |
greg |
2.11 |
for (n = 0, pptr = zp->pfirst; n < zp->ntotal; n++, pptr = pptr->dnext) { |
575 |
greg |
2.4 |
double vfsum = 0; |
576 |
greg |
2.12 |
double adj_factor; |
577 |
greg |
2.3 |
/* send samples to rcontrib */ |
578 |
greg |
2.12 |
if ((adj_factor = sample_surface(pptr, pd->w)) < 0) |
579 |
greg |
2.3 |
return(0); |
580 |
greg |
2.12 |
if (zp->area_redu == NULL) |
581 |
|
|
adj_factor = 1.; |
582 |
|
|
else /* comp. for subsurface area */ |
583 |
|
|
adj_factor /= adj_factor - zp->area_redu[n]; |
584 |
greg |
2.3 |
/* read results */ |
585 |
greg |
2.11 |
if (readbuf(pd->r, (char *)uvfa, sizeof(float)*3*zp->ntotal) != |
586 |
|
|
sizeof(float)*3*zp->ntotal) { |
587 |
greg |
2.3 |
fputs(progname, stderr); |
588 |
|
|
fputs(": read error from rcontrib process\n", stderr); |
589 |
|
|
return(0); |
590 |
|
|
} |
591 |
|
|
/* append UVF fields */ |
592 |
|
|
for (m = 0, pptr1 = zp->pfirst; |
593 |
greg |
2.11 |
m < zp->ntotal; m++, pptr1 = pptr1->dnext) { |
594 |
greg |
2.12 |
const double uvf = uvfa[3*m + 1] * adj_factor; |
595 |
|
|
vfsum += uvf; |
596 |
|
|
if (pptr1 == pptr && uvf > .001) |
597 |
greg |
2.11 |
fprintf(stderr, |
598 |
greg |
2.5 |
"%s: warning - non-zero self-VF (%.1f%%) for surface '%s'\n", |
599 |
greg |
2.12 |
progname, 100.*uvf, |
600 |
greg |
2.3 |
idf_getfield(pptr,NAME_FLD)->val); |
601 |
greg |
2.12 |
sprintf(uvfbuf, "%.4f", uvf); |
602 |
greg |
2.3 |
if (!idf_addfield(pout, |
603 |
|
|
idf_getfield(pptr,NAME_FLD)->val, NULL) || |
604 |
|
|
!idf_addfield(pout, |
605 |
|
|
idf_getfield(pptr1,NAME_FLD)->val, NULL) || |
606 |
|
|
!idf_addfield(pout, uvfbuf, |
607 |
greg |
2.11 |
(n+m < 2*zp->ntotal-2) ? |
608 |
|
|
"\n " : "\n\n")) { |
609 |
greg |
2.3 |
fputs(progname, stderr); |
610 |
|
|
fputs(": error adding UVF fields\n", stderr); |
611 |
|
|
return(0); |
612 |
|
|
} |
613 |
|
|
} |
614 |
greg |
2.4 |
if (vfsum < 0.95) |
615 |
|
|
fprintf(stderr, |
616 |
|
|
"%s: warning - missing %.1f%% of energy from surface '%s'\n", |
617 |
|
|
progname, 100.*(1.-vfsum), |
618 |
|
|
idf_getfield(pptr,NAME_FLD)->val); |
619 |
greg |
2.3 |
} |
620 |
|
|
free(uvfa); /* clean up and return */ |
621 |
|
|
return(1); |
622 |
greg |
2.2 |
} |
623 |
|
|
|
624 |
greg |
2.1 |
/* Compute zone User View Factors */ |
625 |
|
|
static int |
626 |
|
|
compute_zones(void) |
627 |
|
|
{ |
628 |
greg |
2.2 |
ZONE *zptr; |
629 |
|
|
/* temporary octree name */ |
630 |
greg |
2.5 |
mktemp(strcpy(temp_octree, TEMPLATE)); |
631 |
greg |
2.2 |
/* compute each zone */ |
632 |
|
|
for (zptr = zone_list; zptr != NULL; zptr = zptr->next) { |
633 |
|
|
SUBPROC rcproc; |
634 |
|
|
/* start rcontrib process */ |
635 |
|
|
if (!start_rcontrib(&rcproc, zptr)) |
636 |
|
|
return(0); |
637 |
|
|
/* compute+add view factors */ |
638 |
|
|
if (!compute_uvfs(&rcproc, zptr)) |
639 |
|
|
return(0); |
640 |
|
|
if (close_process(&rcproc) != 0) { |
641 |
|
|
fputs(progname, stderr); |
642 |
|
|
fputs(": bad return status from rcontrib\n", stderr); |
643 |
|
|
return(0); |
644 |
|
|
} |
645 |
|
|
} |
646 |
|
|
unlink(temp_octree); /* remove octree file */ |
647 |
|
|
return(1); |
648 |
greg |
2.1 |
} |
649 |
|
|
|
650 |
|
|
/* Load IDF and compute User View Factors */ |
651 |
|
|
int |
652 |
|
|
main(int argc, char *argv[]) |
653 |
|
|
{ |
654 |
greg |
2.2 |
int incl_comments = 1; |
655 |
greg |
2.1 |
char *origIDF, *revIDF; |
656 |
greg |
2.9 |
IDF_OBJECT *pptr; |
657 |
greg |
2.1 |
int i; |
658 |
|
|
|
659 |
greg |
2.7 |
progname = *argv++; argc--; /* get options if any */ |
660 |
|
|
while (argc > 1 && argv[0][0] == '-') |
661 |
|
|
switch (argv[0][1]) { |
662 |
|
|
case 'c': /* elide comments */ |
663 |
|
|
incl_comments = -1; /* header only */ |
664 |
|
|
argv++; argc--; |
665 |
|
|
continue; |
666 |
|
|
case 's': /* samples */ |
667 |
|
|
nsamps = 1000*atoi(*++argv); |
668 |
|
|
argv++; argc -= 2; |
669 |
|
|
continue; |
670 |
|
|
default: |
671 |
|
|
fputs(progname, stderr); |
672 |
|
|
fputs(": unknown option '", stderr); |
673 |
|
|
fputs(argv[0], stderr); |
674 |
|
|
fputs("'\n", stderr); |
675 |
|
|
goto userr; |
676 |
|
|
} |
677 |
|
|
if ((argc < 1) | (argc > 2)) |
678 |
|
|
goto userr; |
679 |
|
|
origIDF = argv[0]; |
680 |
|
|
revIDF = (argc == 1) ? argv[0] : argv[1]; |
681 |
greg |
2.1 |
/* load Input Data File */ |
682 |
|
|
our_idf = idf_load(origIDF); |
683 |
|
|
if (our_idf == NULL) { |
684 |
greg |
2.2 |
fputs(progname, stderr); |
685 |
greg |
2.1 |
fputs(": cannot load IDF '", stderr); |
686 |
|
|
fputs(origIDF, stderr); |
687 |
|
|
fputs("'\n", stderr); |
688 |
|
|
return(1); |
689 |
|
|
} |
690 |
|
|
/* remove existing UVFs */ |
691 |
greg |
2.9 |
if ((pptr = idf_getobject(our_idf, UVF_PNAME)) != NULL) { |
692 |
|
|
IDF_OBJECT *pnext; |
693 |
greg |
2.2 |
fputs(progname, stderr); |
694 |
greg |
2.1 |
fputs(": removing previous User View Factors\n", stderr); |
695 |
|
|
do { |
696 |
|
|
pnext = pptr->pnext; |
697 |
greg |
2.9 |
idf_delobject(our_idf, pptr); |
698 |
greg |
2.1 |
} while (pnext != NULL); |
699 |
|
|
} |
700 |
|
|
/* add to header */ |
701 |
|
|
if (our_idf->hrem == NULL || |
702 |
|
|
(i = strlen(our_idf->hrem)-strlen(ADD_HEADER)) < 0 || |
703 |
|
|
strcmp(our_idf->hrem+i, ADD_HEADER)) |
704 |
|
|
idf_add2hdr(our_idf, ADD_HEADER); |
705 |
|
|
/* gather zone surfaces */ |
706 |
|
|
for (i = 0; surf_type[i].pname != NULL; i++) |
707 |
greg |
2.9 |
for (pptr = idf_getobject(our_idf, surf_type[i].pname); |
708 |
greg |
2.1 |
pptr != NULL; pptr = pptr->pnext) { |
709 |
|
|
IDF_FIELD *fptr = idf_getfield(pptr, |
710 |
|
|
surf_type[i].zone_fld); |
711 |
|
|
if (fptr == NULL) { |
712 |
greg |
2.2 |
fputs(progname, stderr); |
713 |
|
|
fputs(": warning - missing zone field\n", stderr); |
714 |
greg |
2.1 |
continue; |
715 |
|
|
} |
716 |
greg |
2.3 |
if (add2zone(pptr, fptr->val) == NULL) |
717 |
greg |
2.1 |
return(1); |
718 |
|
|
} |
719 |
greg |
2.11 |
/* add subsurfaces */ |
720 |
|
|
for (pptr = idf_getobject(our_idf, SUBSURF_PNAME); |
721 |
|
|
pptr != NULL; pptr = pptr->pnext) |
722 |
|
|
if (add_subsurf(pptr) == NULL) |
723 |
|
|
return(1); |
724 |
greg |
2.1 |
/* run rcontrib on each zone */ |
725 |
|
|
if (!compute_zones()) |
726 |
|
|
return(1); |
727 |
|
|
/* write out modified IDF */ |
728 |
greg |
2.2 |
if (!idf_write(our_idf, revIDF, incl_comments)) { |
729 |
|
|
fputs(progname, stderr); |
730 |
greg |
2.1 |
fputs(": error writing IDF '", stderr); |
731 |
|
|
fputs(revIDF, stderr); |
732 |
|
|
fputs("'\n", stderr); |
733 |
|
|
return(1); |
734 |
|
|
} |
735 |
|
|
return(0); /* finito! */ |
736 |
greg |
2.7 |
userr: |
737 |
|
|
fputs("Usage: ", stderr); |
738 |
|
|
fputs(progname, stderr); |
739 |
|
|
fputs(" [-c][-s Ksamps] Model.idf [Revised.idf]\n", stderr); |
740 |
|
|
return(1); |
741 |
greg |
2.1 |
} |