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/* |
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================================================================== |
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Photon map interface to RADIANCE render options |
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Roland Schregle (roland.schregle@{hslu.ch, gmail.com}) |
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(c) Fraunhofer Institute for Solar Energy Systems, |
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Lucerne University of Applied Sciences & Arts |
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================================================================== |
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$Id: pmapopt.c,v 1.8 2014/12/04 13:27:39 taschreg Exp taschreg $ |
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*/ |
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#include <stdlib.h> |
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#include "pmapparm.h" |
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#include "rtio.h" |
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#include "rterror.h" |
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int getPmapRenderOpt (int ac, char *av []) |
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/* Parse next render option for photon map; interface to getrenderopt(); |
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* return -1 if parsing failed, else number of parameters consumed */ |
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{ |
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#define check(ol,al) (av[0][ol] || badarg(ac-1,av+1,al)) |
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static int t = -1; /* pmap parameter index */ |
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if (ac < 1 || !av [0] || av [0][0] != '-') |
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return -1; |
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switch (av [0][1]) { |
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case 'a': |
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switch (av [0][2]) { |
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case 'p': /* photon map */ |
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if (!check(3, "s")) { |
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/* File -> assume bwidth = 1 or precomputed pmap */ |
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if (++t >= NUM_PMAP_TYPES) |
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error(USER, "too many photon maps"); |
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pmapParams [t].fileName = savqstr(av [1]); |
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pmapParams [t].minGather = pmapParams [t].maxGather = |
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defaultGather; |
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} |
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else return -1; |
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if (!check(3, "si")) { |
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/* File + bandwidth */ |
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pmapParams [t].minGather = pmapParams [t].maxGather = |
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atoi(av [2]); |
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if (!pmapParams [t].minGather) |
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return -1; |
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} |
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else { |
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sprintf(errmsg, "no photon lookup bandwidth specified, " |
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"using default %d", defaultGather); |
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error(WARNING, errmsg); |
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return 1; |
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} |
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if (!check(3, "sii")) { |
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/* File + min bwidth + max bwidth -> bias compensation */ |
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pmapParams [t].maxGather = atoi(av [3]); |
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if (pmapParams [t].minGather >= pmapParams [t].maxGather) |
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return -1; |
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return 3; |
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} |
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else return 2; |
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case 'm': /* max photon search radius coefficient */ |
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if (check(3, "f") || (maxDistCoeff = atof(av [1])) <= 0) |
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error(USER, "invalid max photon search radius coefficient"); |
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return 1; |
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} |
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} |
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#undef check |
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/* Unknown option */ |
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return -1; |
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} |
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void printPmapDefaults () |
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/* Print defaults for photon map render options */ |
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{ |
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puts("-ap file [bwidth1 [bwidth2]]\t# photon map"); |
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printf("-am %.1f\t\t\t# max photon search radius coeff\n", maxDistCoeff); |
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} |
