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 |
Lucerne University of Applied Sciences & Arts |
8 |
================================================================== |
9 |
|
10 |
$Id: pmapopt.c,v 1.8 2014/12/04 13:27:39 taschreg Exp taschreg $ |
11 |
*/ |
12 |
|
13 |
|
14 |
|
15 |
#include <stdlib.h> |
16 |
#include "pmapparm.h" |
17 |
#include "rtio.h" |
18 |
#include "rterror.h" |
19 |
|
20 |
|
21 |
|
22 |
int getPmapRenderOpt (int ac, char *av []) |
23 |
/* Parse next render option for photon map; interface to getrenderopt(); |
24 |
* return -1 if parsing failed, else number of parameters consumed */ |
25 |
{ |
26 |
#define check(ol,al) (av[0][ol] || badarg(ac-1,av+1,al)) |
27 |
|
28 |
static int t = -1; /* pmap parameter index */ |
29 |
|
30 |
if (ac < 1 || !av [0] || av [0][0] != '-') |
31 |
return -1; |
32 |
|
33 |
switch (av [0][1]) { |
34 |
case 'a': |
35 |
switch (av [0][2]) { |
36 |
case 'p': /* photon map */ |
37 |
if (!check(3, "s")) { |
38 |
/* File -> assume bwidth = 1 or precomputed pmap */ |
39 |
if (++t >= NUM_PMAP_TYPES) |
40 |
error(USER, "too many photon maps"); |
41 |
|
42 |
pmapParams [t].fileName = savqstr(av [1]); |
43 |
pmapParams [t].minGather = pmapParams [t].maxGather = |
44 |
defaultGather; |
45 |
} |
46 |
else return -1; |
47 |
|
48 |
if (!check(3, "si")) { |
49 |
/* File + bandwidth */ |
50 |
pmapParams [t].minGather = pmapParams [t].maxGather = |
51 |
atoi(av [2]); |
52 |
|
53 |
if (!pmapParams [t].minGather) |
54 |
return -1; |
55 |
} |
56 |
else { |
57 |
sprintf(errmsg, "no photon lookup bandwidth specified, " |
58 |
"using default %d", defaultGather); |
59 |
error(WARNING, errmsg); |
60 |
return 1; |
61 |
} |
62 |
|
63 |
if (!check(3, "sii")) { |
64 |
/* File + min bwidth + max bwidth -> bias compensation */ |
65 |
pmapParams [t].maxGather = atoi(av [3]); |
66 |
|
67 |
if (pmapParams [t].minGather >= pmapParams [t].maxGather) |
68 |
return -1; |
69 |
|
70 |
return 3; |
71 |
} |
72 |
else return 2; |
73 |
|
74 |
case 'm': /* max photon search radius coefficient */ |
75 |
if (check(3, "f") || (maxDistCoeff = atof(av [1])) <= 0) |
76 |
error(USER, "invalid max photon search radius coefficient"); |
77 |
|
78 |
return 1; |
79 |
} |
80 |
} |
81 |
#undef check |
82 |
|
83 |
/* Unknown option */ |
84 |
return -1; |
85 |
} |
86 |
|
87 |
|
88 |
|
89 |
void printPmapDefaults () |
90 |
/* Print defaults for photon map render options */ |
91 |
{ |
92 |
puts("-ap file [bwidth1 [bwidth2]]\t# photon map"); |
93 |
printf("-am %.1f\t\t\t# max photon search radius coeff\n", maxDistCoeff); |
94 |
} |