| 7 |
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* G. Ward |
| 8 |
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*/ |
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|
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+ |
#define _USE_MATH_DEFINES |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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typedef struct { |
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const char *fname; /* input file path */ |
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< |
double theta, phi; /* incident angles (in degrees) */ |
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> |
double theta, phi; /* input angles */ |
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> |
int igp[2]; /* input grid position */ |
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int isDSF; /* data is DSF (rather than BSDF)? */ |
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long dstart; /* data start offset in file */ |
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} PGINPUT; |
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|
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– |
double angle_eps = 0; /* epsilon for angle comparisons */ |
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– |
|
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PGINPUT *inpfile; /* input files sorted by incidence */ |
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int ninpfiles; /* number of input files */ |
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|
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/* Compare incident angles */ |
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static int |
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< |
cmp_inang(const void *p1, const void *p2) |
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> |
cmp_indir(const void *p1, const void *p2) |
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{ |
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const PGINPUT *inp1 = (const PGINPUT *)p1; |
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const PGINPUT *inp2 = (const PGINPUT *)p2; |
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+ |
int ydif = inp1->igp[1] - inp2->igp[1]; |
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|
| 41 |
< |
if (inp1->theta > inp2->theta+angle_eps) |
| 42 |
< |
return(1); |
| 43 |
< |
if (inp1->theta < inp2->theta-angle_eps) |
| 44 |
< |
return(-1); |
| 44 |
< |
if (inp1->phi > inp2->phi+angle_eps) |
| 45 |
< |
return(1); |
| 46 |
< |
if (inp1->phi < inp2->phi-angle_eps) |
| 47 |
< |
return(-1); |
| 48 |
< |
return(0); |
| 41 |
> |
if (ydif) |
| 42 |
> |
return(ydif); |
| 43 |
> |
|
| 44 |
> |
return(inp1->igp[0] - inp2->igp[0]); |
| 45 |
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} |
| 46 |
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|
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/* Prepare a PAB-Opto input file by reading its header */ |
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init_pabopto_inp(const int i, const char *fname) |
| 50 |
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{ |
| 51 |
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FILE *fp = fopen(fname, "r"); |
| 52 |
+ |
FVECT dv; |
| 53 |
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char buf[2048]; |
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int c; |
| 55 |
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|
| 102 |
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fputs(": unknown incident angle\n", stderr); |
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return(0); |
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} |
| 105 |
< |
while (inpfile[i].phi < 0) /* normalize phi direction */ |
| 106 |
< |
inpfile[i].phi += 360.; |
| 105 |
> |
/* convert angle to grid position */ |
| 106 |
> |
dv[2] = sin(M_PI/180.*inpfile[i].theta); |
| 107 |
> |
dv[0] = cos(M_PI/180.*inpfile[i].phi)*dv[2]; |
| 108 |
> |
dv[1] = sin(M_PI/180.*inpfile[i].phi)*dv[2]; |
| 109 |
> |
dv[2] = sqrt(1. - dv[2]*dv[2]); |
| 110 |
> |
pos_from_vec(inpfile[i].igp, dv); |
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return(1); |
| 112 |
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} |
| 113 |
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|
| 115 |
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static int |
| 116 |
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add_pabopto_inp(const int i) |
| 117 |
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{ |
| 117 |
– |
static int lastnew = -1; |
| 118 |
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FILE *fp = fopen(inpfile[i].fname, "r"); |
| 119 |
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double theta_out, phi_out, val; |
| 120 |
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int n, c; |
| 125 |
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return(0); |
| 126 |
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} |
| 127 |
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/* prepare input grid */ |
| 128 |
< |
angle_eps = 180./2./GRIDRES; |
| 129 |
< |
if (lastnew < 0 || cmp_inang(&inpfile[lastnew], &inpfile[i])) { |
| 130 |
< |
if (lastnew >= 0) /* need to process previous incidence */ |
| 128 |
> |
if (!i || cmp_indir(&inpfile[i-1], &inpfile[i])) { |
| 129 |
> |
if (i) /* process previous incidence */ |
| 130 |
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make_rbfrep(); |
| 131 |
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#ifdef DEBUG |
| 132 |
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fprintf(stderr, "New incident (theta,phi)=(%f,%f)\n", |
| 133 |
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inpfile[i].theta, inpfile[i].phi); |
| 134 |
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#endif |
| 135 |
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new_bsdf_data(inpfile[i].theta, inpfile[i].phi); |
| 137 |
– |
lastnew = i; |
| 136 |
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} |
| 137 |
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#ifdef DEBUG |
| 138 |
|
fprintf(stderr, "Loading measurements from '%s'...\n", inpfile[i].fname); |
| 184 |
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for (i = 0; i < ninpfiles; i++) |
| 185 |
|
if (!init_pabopto_inp(i, argv[i+1])) |
| 186 |
|
return(1); |
| 187 |
< |
angle_eps = 0; |
| 190 |
< |
qsort(inpfile, ninpfiles, sizeof(PGINPUT), &cmp_inang); |
| 187 |
> |
qsort(inpfile, ninpfiles, sizeof(PGINPUT), &cmp_indir); |
| 188 |
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/* compile measurements */ |
| 189 |
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for (i = 0; i < ninpfiles; i++) |
| 190 |
|
if (!add_pabopto_inp(i)) |
