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* G. Ward |
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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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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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double angle_eps = 0; /* epsilon for angle comparisons */ |
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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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/* 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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if (inp1->theta > inp2->theta+angle_eps) |
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return(1); |
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if (inp1->theta < inp2->theta-angle_eps) |
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return(-1); |
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if (inp1->phi > inp2->phi+angle_eps) |
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return(1); |
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if (inp1->phi < inp2->phi-angle_eps) |
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return(-1); |
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return(0); |
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if (ydif) |
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return(ydif); |
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|
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return(inp1->igp[0] - inp2->igp[0]); |
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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) |
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{ |
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FILE *fp = fopen(fname, "r"); |
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FVECT dv; |
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char buf[2048]; |
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int c; |
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fputs(": unknown incident angle\n", stderr); |
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return(0); |
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} |
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while (inpfile[i].phi < 0) /* normalize phi direction */ |
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inpfile[i].phi += 360.; |
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/* convert angle to grid position */ |
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dv[2] = sin(M_PI/180.*inpfile[i].theta); |
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dv[0] = cos(M_PI/180.*inpfile[i].phi)*dv[2]; |
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dv[1] = sin(M_PI/180.*inpfile[i].phi)*dv[2]; |
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dv[2] = sqrt(1. - dv[2]*dv[2]); |
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pos_from_vec(inpfile[i].igp, dv); |
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return(1); |
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} |
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static int |
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add_pabopto_inp(const int i) |
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{ |
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static int lastnew = -1; |
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FILE *fp = fopen(inpfile[i].fname, "r"); |
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double theta_out, phi_out, val; |
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int n, c; |
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return(0); |
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} |
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/* prepare input grid */ |
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angle_eps = 180./2./GRIDRES; |
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if (lastnew < 0 || cmp_inang(&inpfile[lastnew], &inpfile[i])) { |
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if (lastnew >= 0) /* need to process previous incidence */ |
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if (!i || cmp_indir(&inpfile[i-1], &inpfile[i])) { |
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if (i) /* process previous incidence */ |
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make_rbfrep(); |
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#ifdef DEBUG |
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fprintf(stderr, "New incident (theta,phi)=(%f,%f)\n", |
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inpfile[i].theta, inpfile[i].phi); |
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#endif |
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new_bsdf_data(inpfile[i].theta, inpfile[i].phi); |
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lastnew = i; |
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} |
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#ifdef DEBUG |
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fprintf(stderr, "Loading measurements from '%s'...\n", inpfile[i].fname); |
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for (i = 0; i < ninpfiles; i++) |
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if (!init_pabopto_inp(i, argv[i+1])) |
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return(1); |
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angle_eps = 0; |
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qsort(inpfile, ninpfiles, sizeof(PGINPUT), &cmp_inang); |
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qsort(inpfile, ninpfiles, sizeof(PGINPUT), &cmp_indir); |
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/* compile measurements */ |
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for (i = 0; i < ninpfiles; i++) |
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if (!add_pabopto_inp(i)) |