8 |
|
*/ |
9 |
|
|
10 |
|
#include <stdio.h> |
11 |
+ |
#include <stdlib.h> |
12 |
|
#include <string.h> |
13 |
|
#include <ctype.h> |
14 |
|
#include "platform.h" |
16 |
|
/* global argv[0] */ |
17 |
|
char *progname; |
18 |
|
|
19 |
< |
/* Load a set of measurements corresponding to a particular incident angle */ |
19 |
> |
typedef struct { |
20 |
> |
const char *fname; /* input file path */ |
21 |
> |
double theta, phi; /* incident angles (in degrees) */ |
22 |
> |
int isDSF; /* data is DSF (rather than BSDF)? */ |
23 |
> |
long dstart; /* data start offset in file */ |
24 |
> |
} PGINPUT; |
25 |
> |
|
26 |
> |
PGINPUT *inpfile; /* input files sorted by incidence */ |
27 |
> |
int ninpfiles; /* number of input files */ |
28 |
> |
|
29 |
> |
/* Compare incident angles */ |
30 |
|
static int |
31 |
< |
load_pabopto_meas(const char *fname) |
31 |
> |
cmp_inang(const void *p1, const void *p2) |
32 |
|
{ |
33 |
+ |
const PGINPUT *inp1 = (const PGINPUT *)p1; |
34 |
+ |
const PGINPUT *inp2 = (const PGINPUT *)p2; |
35 |
+ |
|
36 |
+ |
if (inp1->theta > inp2->theta+FTINY) |
37 |
+ |
return(1); |
38 |
+ |
if (inp1->theta < inp2->theta-FTINY) |
39 |
+ |
return(-1); |
40 |
+ |
if (inp1->phi > inp2->phi+FTINY) |
41 |
+ |
return(1); |
42 |
+ |
if (inp1->phi < inp2->phi-FTINY) |
43 |
+ |
return(-1); |
44 |
+ |
return(0); |
45 |
+ |
} |
46 |
+ |
|
47 |
+ |
/* Prepare a PAB-Opto input file by reading its header */ |
48 |
+ |
static int |
49 |
+ |
init_pabopto_inp(const int i, const char *fname) |
50 |
+ |
{ |
51 |
|
FILE *fp = fopen(fname, "r"); |
23 |
– |
int inp_is_DSF = -1; |
24 |
– |
double new_theta, new_phi, theta_out, phi_out, val; |
52 |
|
char buf[2048]; |
53 |
< |
int n, c; |
53 |
> |
int c; |
54 |
|
|
55 |
|
if (fp == NULL) { |
56 |
|
fputs(fname, stderr); |
57 |
|
fputs(": cannot open\n", stderr); |
58 |
|
return(0); |
59 |
|
} |
60 |
< |
#ifdef DEBUG |
61 |
< |
fprintf(stderr, "Loading measurement file '%s'...\n", fname); |
62 |
< |
#endif |
60 |
> |
inpfile[i].fname = fname; |
61 |
> |
inpfile[i].isDSF = -1; |
62 |
> |
inpfile[i].theta = inpfile[i].phi = -10001.; |
63 |
|
/* read header information */ |
64 |
|
while ((c = getc(fp)) == '#' || c == EOF) { |
65 |
|
if (fgets(buf, sizeof(buf), fp) == NULL) { |
69 |
|
return(0); |
70 |
|
} |
71 |
|
if (!strcmp(buf, "format: theta phi DSF\n")) { |
72 |
< |
inp_is_DSF = 1; |
72 |
> |
inpfile[i].isDSF = 1; |
73 |
|
continue; |
74 |
|
} |
75 |
|
if (!strcmp(buf, "format: theta phi BSDF\n")) { |
76 |
< |
inp_is_DSF = 0; |
76 |
> |
inpfile[i].isDSF = 0; |
77 |
|
continue; |
78 |
|
} |
79 |
< |
if (sscanf(buf, "intheta %lf", &new_theta) == 1) |
79 |
> |
if (sscanf(buf, "intheta %lf", &inpfile[i].theta) == 1) |
80 |
|
continue; |
81 |
< |
if (sscanf(buf, "inphi %lf", &new_phi) == 1) |
81 |
> |
if (sscanf(buf, "inphi %lf", &inpfile[i].phi) == 1) |
82 |
|
continue; |
83 |
|
if (sscanf(buf, "incident_angle %lf %lf", |
84 |
< |
&new_theta, &new_phi) == 2) |
84 |
> |
&inpfile[i].theta, &inpfile[i].phi) == 2) |
85 |
|
continue; |
86 |
|
} |
87 |
< |
ungetc(c, fp); |
88 |
< |
if (inp_is_DSF < 0) { |
87 |
> |
inpfile[i].dstart = ftell(fp) - 1; |
88 |
> |
fclose(fp); |
89 |
> |
if (inpfile[i].isDSF < 0) { |
90 |
|
fputs(fname, stderr); |
91 |
|
fputs(": unknown format\n", stderr); |
64 |
– |
fclose(fp); |
92 |
|
return(0); |
93 |
|
} |
94 |
+ |
if ((inpfile[i].theta < -10000.) | (inpfile[i].phi < -10000.)) { |
95 |
+ |
fputs(fname, stderr); |
96 |
+ |
fputs(": unknown incident angle\n", stderr); |
97 |
+ |
return(0); |
98 |
+ |
} |
99 |
+ |
return(1); |
100 |
+ |
} |
101 |
+ |
|
102 |
+ |
/* Load a set of measurements corresponding to a particular incident angle */ |
103 |
+ |
static int |
104 |
+ |
add_pabopto_inp(const int i) |
105 |
+ |
{ |
106 |
+ |
FILE *fp = fopen(inpfile[i].fname, "r"); |
107 |
+ |
double theta_out, phi_out, val; |
108 |
+ |
int n, c; |
109 |
+ |
|
110 |
+ |
if (fp == NULL || fseek(fp, inpfile[i].dstart, 0) == EOF) { |
111 |
+ |
fputs(inpfile[i].fname, stderr); |
112 |
+ |
fputs(": cannot open\n", stderr); |
113 |
+ |
return(0); |
114 |
+ |
} |
115 |
|
/* prepare input grid */ |
116 |
< |
new_bsdf_data(new_theta, new_phi); |
117 |
< |
/* read actual data */ |
116 |
> |
if (!i || cmp_inang(&inpfile[i-1], &inpfile[i])) { |
117 |
> |
if (i) /* need to process previous incidence */ |
118 |
> |
make_rbfrep(); |
119 |
> |
#ifdef DEBUG |
120 |
> |
fprintf(stderr, "New incident (theta,phi)=(%f,%f)\n", |
121 |
> |
inpfile[i].theta, inpfile[i].phi); |
122 |
> |
#endif |
123 |
> |
new_bsdf_data(inpfile[i].theta, inpfile[i].phi); |
124 |
> |
} |
125 |
> |
#ifdef DEBUG |
126 |
> |
fprintf(stderr, "Loading measurements from '%s'...\n", inpfile[i].fname); |
127 |
> |
#endif |
128 |
> |
/* read scattering data */ |
129 |
|
while (fscanf(fp, "%lf %lf %lf\n", &theta_out, &phi_out, &val) == 3) |
130 |
< |
add_bsdf_data(theta_out, phi_out, val, inp_is_DSF); |
130 |
> |
add_bsdf_data(theta_out, phi_out, val, inpfile[i].isDSF); |
131 |
|
n = 0; |
132 |
|
while ((c = getc(fp)) != EOF) |
133 |
|
n += !isspace(c); |
134 |
|
if (n) |
135 |
|
fprintf(stderr, |
136 |
|
"%s: warning: %d unexpected characters past EOD\n", |
137 |
< |
fname, n); |
137 |
> |
inpfile[i].fname, n); |
138 |
|
fclose(fp); |
139 |
|
return(1); |
140 |
|
} |
161 |
|
} |
162 |
|
argv += 2; argc -= 2; |
163 |
|
} |
164 |
< |
if (argc < 3) |
164 |
> |
/* initialize & sort inputs */ |
165 |
> |
ninpfiles = argc - 1; |
166 |
> |
if (ninpfiles < 2) |
167 |
|
goto userr; |
168 |
< |
for (i = 1; i < argc; i++) { /* compile measurements */ |
169 |
< |
if (!load_pabopto_meas(argv[i])) |
168 |
> |
inpfile = (PGINPUT *)malloc(sizeof(PGINPUT)*ninpfiles); |
169 |
> |
if (inpfile == NULL) |
170 |
> |
return(1); |
171 |
> |
for (i = 0; i < ninpfiles; i++) |
172 |
> |
if (!init_pabopto_inp(i, argv[i+1])) |
173 |
|
return(1); |
174 |
< |
make_rbfrep(); |
175 |
< |
} |
174 |
> |
qsort(inpfile, ninpfiles, sizeof(PGINPUT), &cmp_inang); |
175 |
> |
/* compile measurements */ |
176 |
> |
for (i = 0; i < ninpfiles; i++) |
177 |
> |
if (!add_pabopto_inp(i)) |
178 |
> |
return(1); |
179 |
> |
make_rbfrep(); /* process last data set */ |
180 |
|
build_mesh(); /* create interpolation */ |
181 |
|
save_bsdf_rep(stdout); /* write it out */ |
182 |
|
return(0); |