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/* Copyright (c) 1991 Regents of the University of California */ |
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/* SCCSid "$SunId$ LBL" */ |
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/* |
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* Common data structures for glare source finding routines |
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*/ |
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#include "standard.h" |
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#include "view.h" |
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#include "color.h" |
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#include "setscan.h" |
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#define GLAREBR 10.0 /* glare source is this * avg. lum. */ |
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#define SAMPDENS 50 /* default samples per unit in image */ |
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#define TSAMPSTEP 10 /* sample step to compute threshold */ |
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#define SEPS 2 /* sources this close ==> contig. */ |
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#define SAMIN .005 /* minimum solid angle for source */ |
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#define MAXBUDDY (4.*sqrt(SAMIN/PI)) /* max separation for pairing */ |
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#define TOOSMALL(s) ((s)->brt*(s)->dom < threshold*SAMIN) |
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extern VIEW ourview; /* our view */ |
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extern VIEW pictview; /* picture view */ |
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extern VIEW leftview, rightview; /* leftmost and rightmost views */ |
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extern int verbose; /* verbose reporting */ |
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extern char *progname; /* global argv[0] */ |
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extern double threshold; /* threshold value for glare sources */ |
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extern int sampdens; /* sample density */ |
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extern ANGLE glarang[]; /* glare calculation angles */ |
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extern int nglarangs; |
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extern double maxtheta; /* maximum glare angle (in radians) */ |
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extern int hsize; /* horizontal size */ |
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extern int hlim; /* horizontal limit of central view */ |
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#define nglardirs (2*nglarangs+1) |
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#define vsize (sampdens-1) |
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#define h_theta(h) (-(double)(h)/(double)sampdens) |
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extern struct illum { |
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float theta; /* glare direction */ |
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float lcos, lsin; /* cosine and sine to left view */ |
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float rcos, rsin; /* cosine and sine to right view */ |
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double sum; /* sum of indirect luminances */ |
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double n; /* number of values in sum */ |
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} *indirect; /* array of indirect illuminances */ |
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struct srcspan { |
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short v; /* vertical position */ |
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short l, r; /* left and right horizontal limits */ |
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float brsum; /* sum of brightnesses for this span */ |
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struct srcspan *next; /* next source span in list */ |
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}; |
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extern struct source { |
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FVECT dir; /* source direction */ |
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double dom; /* solid angle of source */ |
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double brt; /* average source brightness */ |
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struct srcspan *first; /* first span for this source */ |
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struct source *next; /* next source in list */ |
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} *donelist; /* finished sources */ |
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extern double getviewpix(); |
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extern long npixinvw; /* number of samples in view */ |
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extern long npixmiss; /* number of samples missing */ |
