| 1 |
/* |
| 2 |
================================================================== |
| 3 |
Photon map interface to RADIANCE render options |
| 4 |
|
| 5 |
Roland Schregle (roland.schregle@{hslu.ch, gmail.com}) |
| 6 |
(c) Fraunhofer Institute for Solar Energy Systems, |
| 7 |
(c) Lucerne University of Applied Sciences and Arts, |
| 8 |
supported by the Swiss National Science Foundation (SNSF, #147053) |
| 9 |
================================================================== |
| 10 |
|
| 11 |
$Id: pmapopt.c,v 2.3 2015/05/21 15:26:35 greg Exp $ |
| 12 |
*/ |
| 13 |
|
| 14 |
|
| 15 |
|
| 16 |
#include "ray.h" |
| 17 |
#include "pmapparm.h" |
| 18 |
|
| 19 |
|
| 20 |
|
| 21 |
int getPmapRenderOpt (int ac, char *av []) |
| 22 |
/* Parse next render option for photon map; interface to getrenderopt(); |
| 23 |
* return -1 if parsing failed, else number of parameters consumed */ |
| 24 |
{ |
| 25 |
#define check(ol,al) (av[0][ol] || badarg(ac-1,av+1,al)) |
| 26 |
|
| 27 |
static int t = -1; /* pmap parameter index */ |
| 28 |
|
| 29 |
if (ac < 1 || !av [0] || av [0][0] != '-') |
| 30 |
return -1; |
| 31 |
|
| 32 |
switch (av [0][1]) { |
| 33 |
case 'a': |
| 34 |
switch (av [0][2]) { |
| 35 |
case 'p': /* photon map */ |
| 36 |
/* Asking for photon map, ergo ambounce != 0 */ |
| 37 |
ambounce += (ambounce == 0); |
| 38 |
if (!check(3, "s")) { |
| 39 |
/* File -> assume bwidth = 1 or precomputed pmap */ |
| 40 |
if (++t >= NUM_PMAP_TYPES) |
| 41 |
error(USER, "too many photon maps"); |
| 42 |
|
| 43 |
pmapParams [t].fileName = savqstr(av [1]); |
| 44 |
pmapParams [t].minGather = pmapParams [t].maxGather = |
| 45 |
defaultGather; |
| 46 |
} |
| 47 |
else return -1; |
| 48 |
|
| 49 |
if (!check(3, "si")) { |
| 50 |
/* File + bandwidth */ |
| 51 |
pmapParams [t].minGather = pmapParams [t].maxGather = |
| 52 |
atoi(av [2]); |
| 53 |
|
| 54 |
if (!pmapParams [t].minGather) |
| 55 |
return -1; |
| 56 |
} |
| 57 |
else { |
| 58 |
sprintf(errmsg, "no photon lookup bandwidth specified, " |
| 59 |
"using default %d", defaultGather); |
| 60 |
error(WARNING, errmsg); |
| 61 |
return 1; |
| 62 |
} |
| 63 |
|
| 64 |
if (!check(3, "sii")) { |
| 65 |
/* File + min bwidth + max bwidth -> bias compensation */ |
| 66 |
pmapParams [t].maxGather = atoi(av [3]); |
| 67 |
|
| 68 |
if (pmapParams [t].minGather >= pmapParams [t].maxGather) |
| 69 |
return -1; |
| 70 |
|
| 71 |
return 3; |
| 72 |
} |
| 73 |
else return 2; |
| 74 |
|
| 75 |
case 'm': /* max photon search radius coefficient */ |
| 76 |
if (check(3, "f") || (maxDistCoeff = atof(av [1])) <= 0) |
| 77 |
error(USER, "invalid max photon search radius coefficient"); |
| 78 |
|
| 79 |
return 1; |
| 80 |
} |
| 81 |
} |
| 82 |
#undef check |
| 83 |
|
| 84 |
/* Unknown option */ |
| 85 |
return -1; |
| 86 |
} |
| 87 |
|
| 88 |
|
| 89 |
|
| 90 |
void printPmapDefaults () |
| 91 |
/* Print defaults for photon map render options */ |
| 92 |
{ |
| 93 |
printf("-am %.1f\t\t\t# max photon search radius coeff\n", maxDistCoeff); |
| 94 |
} |
