| 1266 |
|
Values in between are separated by |
| 1267 |
|
.I "(l_max-l_min)/(N-1)" |
| 1268 |
|
nanometers. |
| 1269 |
< |
All values must be non-negative, and the spectrum outside of the |
| 1269 |
> |
All values should be non-negative unless defining a component for |
| 1270 |
> |
complementary color mixing, and the spectrum outside of the |
| 1271 |
|
specified range is assumed to be zero. |
| 1272 |
|
(The visible range is 380 to 780 nm.)\0 |
| 1273 |
|
The actual units and scale of the measurements do not matter, |
| 2388 |
|
.SH |
| 2389 |
|
SYNOPSIS |
| 2390 |
|
.LP |
| 2391 |
< |
.B cyl |
| 2391 |
> |
.B ring |
| 2392 |
|
.I "vc rmin rmax" |
| 2393 |
|
.SH |
| 2394 |
|
DESCRIPTION |
| 2501 |
|
.NH |
| 2502 |
|
MGF Translators |
| 2503 |
|
.LP |
| 2504 |
< |
Initially, there are four translators for MGF data, but only |
| 2505 |
< |
one of these is distributed with the MGF parser itself, |
| 2506 |
< |
.I mgfilt. |
| 2504 |
> |
Initially, there are five translators for MGF data, but only |
| 2505 |
> |
two of these are distributed with the MGF parser itself, |
| 2506 |
> |
.I mgfilt |
| 2507 |
> |
and |
| 2508 |
> |
.I mgf2inv. |
| 2509 |
|
Two of the other translators, |
| 2510 |
|
.I mgf2rad |
| 2511 |
|
and |
| 2518 |
|
nestor.epfl.ch, or by WWW from |
| 2519 |
|
"http://radsite.lbl.gov/radiance/HOME.html" |
| 2520 |
|
.FE |
| 2521 |
< |
A third translator, |
| 2521 |
> |
The fifth translator, |
| 2522 |
|
.I mgf2meta, |
| 2523 |
|
converts to a 2-dimensional line plot, and is also |
| 2524 |
|
distributed with Radiance. |
| 2535 |
|
In future releases of MGF, this utility will also be handy for |
| 2536 |
|
taking new entities and producing older versions of MGF for |
| 2537 |
|
translators that have not yet been updated properly. |
| 2538 |
+ |
.LP |
| 2539 |
+ |
Mgf2inv converts from MGF to Inventor or VRML format. |
| 2540 |
+ |
Some information is lost, because these formats do not support |
| 2541 |
+ |
physical light sources or materials. |
| 2542 |
|
.ds LH Translators |
| 2543 |
|
.ds RH MGFILT |
| 2544 |
|
.bp |
| 2573 |
|
of MGF that is to be produced. |
| 2574 |
|
Since MGF is in its first major release, this is not yet a useful |
| 2575 |
|
form, but it will be when the second major release comes out. |
| 2576 |
+ |
This has the necessary side-effect of expanding all included files. |
| 2577 |
+ |
(See the |
| 2578 |
+ |
.UL i |
| 2579 |
+ |
entity.)\0 |
| 2580 |
|
.LP |
| 2581 |
|
In the second form, |
| 2582 |
|
.I mgfilt |
| 2601 |
|
.SH |
| 2602 |
|
SEE ALSO |
| 2603 |
|
.LP |
| 2604 |
< |
mgf2rad, rad2mgf |
| 2604 |
> |
i, mgf2inv, mgf2rad, rad2mgf |
| 2605 |
> |
.ds RH MGF2INV |
| 2606 |
> |
.bp |
| 2607 |
> |
.SH |
| 2608 |
> |
NAME |
| 2609 |
> |
.LP |
| 2610 |
> |
mgf2inv - convert from MGF to Inventor or VRML format |
| 2611 |
> |
.SH |
| 2612 |
> |
SYNOPSIS |
| 2613 |
> |
.LP |
| 2614 |
> |
.B mgf2inv |
| 2615 |
> |
[ |
| 2616 |
> |
.B "-1|-2|-vrml" |
| 2617 |
> |
] |
| 2618 |
> |
[ |
| 2619 |
> |
.B input .. |
| 2620 |
> |
] |
| 2621 |
> |
.SH |
| 2622 |
> |
DESCRIPTION |
| 2623 |
> |
.LP |
| 2624 |
> |
.I Mgf2inv |
| 2625 |
> |
takes one or more MGF input files and converts it to |
| 2626 |
> |
Inventor or VRML format. |
| 2627 |
> |
If the |
| 2628 |
> |
.I \-1 |
| 2629 |
> |
option is used, then Inventor 1.0 ASCII output is produced. |
| 2630 |
> |
If the |
| 2631 |
> |
.I \-2 |
| 2632 |
> |
option is used, then Inventor 2.0 ASCII output is produced. |
| 2633 |
> |
(This is the default.)\0 |
| 2634 |
> |
If the |
| 2635 |
> |
.I \-vrml |
| 2636 |
> |
option is used, then VRML 1.0 ASCII output is produced. |
| 2637 |
> |
.LP |
| 2638 |
> |
This converter does not work properly for light sources, since |
| 2639 |
> |
the output formats do not support IES-type luminaires with recorded |
| 2640 |
> |
distributions. |
| 2641 |
> |
Also, some material information may be lost because Inventor lacks |
| 2642 |
> |
a physically valid reflectance model. |
| 2643 |
> |
.SH |
| 2644 |
> |
EXAMPLES |
| 2645 |
> |
.LP |
| 2646 |
> |
To take an MGF file and convert it to VRML format: |
| 2647 |
> |
.IP |
| 2648 |
> |
mgf2inv -vrml myscene.mgf > myscene.iv |
| 2649 |
> |
.SH |
| 2650 |
> |
SEE ALSO |
| 2651 |
> |
.LP |
| 2652 |
> |
mgf2rad, mgfilt, rad2mgf |
| 2653 |
|
.ds RH MGF2RAD |
| 2654 |
|
.bp |
| 2655 |
|
.SH |
| 3331 |
|
#define MG_EMEM 8 /* out of memory */ |
| 3332 |
|
#define MG_ESEEK 9 /* file seek error */ |
| 3333 |
|
#define MG_EBADMAT 10 /* bad material specification */ |
| 3334 |
+ |
#define MG_ELINE 11 /* input line too long */ |
| 3335 |
+ |
#define MG_ECNTXT 12 /* unmatched context close */ |
| 3336 |
|
|
| 3337 |
< |
#define MG_NERRS 11 |
| 3337 |
> |
#define MG_NERRS 13 |
| 3338 |
|
.DE |
| 3339 |
|
If it is inappropriate to send output to standard error, the calling |
| 3340 |
|
program should use the routines listed under |
| 3418 |
|
function reads the next input line from the current file, |
| 3419 |
|
returning the number of characters in the line, or zero if the |
| 3420 |
|
end of file is reached or there is a file error. |
| 3421 |
< |
The function skips over escaped newlines, and keeps track of the |
| 3421 |
> |
If the value returned equals MG_MAXLINE-1, |
| 3422 |
> |
then the input line was too long, and you |
| 3423 |
> |
should return an MG_ELINE error. |
| 3424 |
> |
The function keeps track of the |
| 3425 |
|
line number in the current file context |
| 3426 |
|
.I mg_file, |
| 3427 |
|
which also contains the line that was read. |
