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<!-- RCSid $Id$ --> |
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<head> |
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<title> |
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< |
The RADIANCE 5.4 Synthetic Imaging System |
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The RADIANCE 6.0 Synthetic Imaging System |
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</title> |
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</head> |
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<body> |
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<p> |
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<h1> |
13 |
< |
The RADIANCE 5.4 Synthetic Imaging System |
13 |
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The RADIANCE 6.0 Synthetic Imaging System |
14 |
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</h1> |
15 |
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|
16 |
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<p> |
75 |
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computer-aided engineering and architecture. |
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|
77 |
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<p> |
78 |
< |
<img SRC="diagram1.gif"> |
78 |
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<img SRC="diagram1.png"> |
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<p> |
80 |
– |
Figure 1 |
81 |
– |
<p> |
80 |
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The diagram in Figure 1 shows the flow between programs (boxes) and data |
81 |
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(ovals). |
82 |
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The central program is <i>rpict</i>, which produces a picture from a scene |
146 |
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... |
147 |
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</pre> |
148 |
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|
149 |
+ |
<p> |
150 |
+ |
|
151 |
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A comment line begins with a pound sign, `#'. |
152 |
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|
153 |
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<p> |
394 |
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0 |
395 |
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</pre> |
396 |
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|
397 |
+ |
<p> |
398 |
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If the modifier is "void", then surfaces will |
399 |
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use the modifiers given in the original description. |
400 |
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Otherwise, the modifier specified is used in their place. |
439 |
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0 |
440 |
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</pre> |
441 |
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|
442 |
+ |
<p> |
443 |
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|
444 |
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If the modifier is "void", then surfaces will |
445 |
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use the modifiers given in the original mesh description. |
446 |
|
Otherwise, the modifier specified is used in their place. |
535 |
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4 red green blue maxrad |
536 |
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</pre> |
537 |
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|
538 |
+ |
<p> |
539 |
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If maxrad is zero, then the surface will never be tested for shadow, although it may participate in an interreflection calculation. |
540 |
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If maxrad is negative, then the surface will never contribute to scene illumination. |
541 |
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Glow sources will never illuminate objects on the other side of an illum surface. |
584 |
|
3 red green blue |
585 |
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</pre> |
586 |
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|
587 |
+ |
While alternate materials that are reflective will appear as normal, |
588 |
+ |
indirect rays will use the mirror's reflectance rather than the |
589 |
+ |
alternate type. |
590 |
+ |
Transmitting materials are an exception, where both transmission and |
591 |
+ |
reflection will use the alternate type for all rays not specifically |
592 |
+ |
targeting virtual light sources. |
593 |
+ |
In this case, it is important that any reflections be purely specular |
594 |
+ |
(mirror-like) and equal to the mirror's reflectivity |
595 |
+ |
to maintain a valid result. |
596 |
+ |
A pure diffuse reflection may be added if desired. |
597 |
+ |
|
598 |
|
<p> |
599 |
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|
600 |
+ |
The mirror material type reflects light sources only from the front side |
601 |
+ |
of a surface, regardless of any alternate material. |
602 |
+ |
If virtual source generation is desired on both sides, two coincident |
603 |
+ |
surfaces with opposite normal orientations may be employed to achieve |
604 |
+ |
this effect. |
605 |
+ |
The reflectance and alternate material type may be |
606 |
+ |
different for the overlapped surfaces, |
607 |
+ |
and the two sides will behave accordingly. |
608 |
+ |
|
609 |
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<p> |
610 |
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|
611 |
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<dt> |
612 |
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<a NAME="Prism1"> |
613 |
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<b>Prism1</b> |
629 |
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n A1 A2 .. An |
630 |
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</pre> |
631 |
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|
632 |
+ |
<p> |
633 |
+ |
|
634 |
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The new direction variables dx, dy and dz need not produce a normalized vector. |
635 |
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For convenience, the variables DxA, DyA and DzA are defined as the normalized direction to the target light source. |
636 |
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See <a HREF="#Function">section 2.2.1</a> on function files for further information. |
674 |
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3 source1 mirror1>source10 mirror2>mirror1>source3 |
675 |
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</pre> |
676 |
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|
677 |
+ |
<p> |
678 |
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Normally, only one source is given per mist material, and there is an |
679 |
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upper limit of 32 to the total number of active scattering sources. |
680 |
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The extinction coefficient, if given, is added the the global |
695 |
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P(theta) = (1 - g*g) / (1 + g*g - 2*g*cos(theta))^1.5 |
696 |
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</pre> |
697 |
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|
698 |
+ |
<p> |
699 |
+ |
|
700 |
|
A perfectly isotropic scattering medium has a g parameter of 0, and |
701 |
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a highly directional material has a g parameter close to 1. |
702 |
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Fits to the g parameter may be found along with typical extinction |
711 |
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0|3|6|7 [ rext gext bext [ ralb galb balb [ g ] ] ] |
712 |
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</pre> |
713 |
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|
714 |
+ |
<p> |
715 |
+ |
|
716 |
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There are two usual uses of the mist type. |
717 |
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One is to surround a beam from a spotlight or laser so that it is |
718 |
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visible during rendering. |
867 |
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<p> |
868 |
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|
869 |
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<dt> |
870 |
+ |
<a NAME="WGMDfunc"> |
871 |
+ |
<b>WGMDfunc</b> |
872 |
+ |
</a> |
873 |
+ |
|
874 |
+ |
<dd> |
875 |
+ |
WGMDfunc is a more programmable version of <a HREF="#Trans2">trans2</a>, |
876 |
+ |
with separate modifier paths and variables to control each component. |
877 |
+ |
(WGMD stands for Ward-Geisler-Moroder-Duer, which is the basis for |
878 |
+ |
this empirical model, similar to previous ones beside Ashik2.) |
879 |
+ |
The specification of this material is given below. |
880 |
+ |
<pre> |
881 |
+ |
mod WGMDfunc id |
882 |
+ |
13+ rs_mod rs rs_urough rs_vrough |
883 |
+ |
ts_mod ts ts_urough ts_vrough |
884 |
+ |
td_mod |
885 |
+ |
ux uy uz funcfile transform |
886 |
+ |
0 |
887 |
+ |
9+ rfdif gfdif bfdif |
888 |
+ |
rbdif gbdif bbdif |
889 |
+ |
rtdif gtdif btdif |
890 |
+ |
A10 .. |
891 |
+ |
</pre> |
892 |
+ |
|
893 |
+ |
<p> |
894 |
+ |
|
895 |
+ |
The sum of specular reflectance (<I>rs</I>), specular transmittance (<I>ts</I>), |
896 |
+ |
diffuse reflectance (<I>rfdif gfdif bfdif</I> for front and <I>rbdif gbdif bbdif</I> for back) |
897 |
+ |
and diffuse transmittance (<I>rtdif gtdif btdif</I>) should be less than 1 for each |
898 |
+ |
channel. |
899 |
+ |
|
900 |
+ |
<p> |
901 |
+ |
|
902 |
+ |
Unique to this material, separate modifier channels are |
903 |
+ |
provided for each component. |
904 |
+ |
The main modifier is used on the diffuse reflectance, both |
905 |
+ |
front and back. |
906 |
+ |
The <I>rs_mod</I> modifier is used for specular reflectance. |
907 |
+ |
If "void" is given for <I>rs_mod</I>, |
908 |
+ |
then the specular reflection color will be white. |
909 |
+ |
The special "inherit" keyword may also be given, in which case |
910 |
+ |
specular reflectance will share the main modifier. |
911 |
+ |
This behavior is replicated for the specular transmittance modifier |
912 |
+ |
<I>ts_mod</I>, which also has its own independent roughness expressions. |
913 |
+ |
Finally, the diffuse transmittance modifier is given as |
914 |
+ |
<I>td_mod</I>, which may also be "void" or "inherit". |
915 |
+ |
Note that any spectra or color for specular components must be |
916 |
+ |
carried by the named modifier(s). |
917 |
+ |
|
918 |
+ |
<p> |
919 |
+ |
|
920 |
+ |
The main advantage to this material over |
921 |
+ |
<a HREF="#BRTDfunc">BRTDfunc</a> and |
922 |
+ |
other programmable types described below is that the specular sampling is |
923 |
+ |
well-defined, so that all components are fully computed. |
924 |
+ |
|
925 |
+ |
<p> |
926 |
+ |
|
927 |
+ |
<dt> |
928 |
|
<a NAME="Dielectric"> |
929 |
|
<b>Dielectric</b> |
930 |
|
</a> |
985 |
|
tn = (sqrt(.8402528435+.0072522239*Tn*Tn)-.9166530661)/.0036261119/Tn |
986 |
|
</pre> |
987 |
|
|
988 |
+ |
<p> |
989 |
+ |
|
990 |
|
Standard 88% transmittance glass has a transmissivity of 0.96. |
991 |
|
(A <a HREF="#Patterns">pattern</a> modifying glass will affect the transmissivity.) |
992 |
|
If a fourth real argument is given, it is interpreted as the index of refraction to use instead of 1.52. |
1018 |
|
4+ red green blue spec A5 .. |
1019 |
|
</pre> |
1020 |
|
|
1021 |
+ |
<p> |
1022 |
+ |
|
1023 |
|
The function refl takes four arguments, the x, y and z |
1024 |
|
direction towards the incident light, and the solid angle |
1025 |
|
subtended by the source. |
1061 |
|
6+ red green blue rspec trans tspec A7 .. |
1062 |
|
</pre> |
1063 |
|
|
1064 |
+ |
<p> |
1065 |
+ |
|
1066 |
|
Where trans is the total light transmitted and tspec is the non-Lambertian fraction of transmitted light. |
1067 |
|
The function brtd should integrate to 1 over each projected hemisphere. |
1068 |
|
|
1090 |
|
A10 .. |
1091 |
|
</pre> |
1092 |
|
|
1093 |
+ |
<p> |
1094 |
+ |
|
1095 |
|
The variables rrefl, grefl and brefl specify the color coefficients for the ideal specular (mirror) reflection of the surface. |
1096 |
|
The variables rtrns, gtrns and btrns specify the color coefficients for the ideal specular transmission. |
1097 |
|
The functions rbrtd, gbrtd and bbrtd take the direction to the incident light (and its solid angle) and |
1136 |
|
4+ red green blue spec A5 .. |
1137 |
|
</pre> |
1138 |
|
|
1139 |
+ |
<p> |
1140 |
+ |
|
1141 |
|
The coordinate indices (x1, x2, etc.) are themselves functions of the x, y and z direction to the incident light, plus the solid angle |
1142 |
|
subtended by the light source (usually ignored). |
1143 |
|
The data function (func) takes five variables, the |
1304 |
|
0 |
1305 |
|
</pre> |
1306 |
|
|
1307 |
+ |
<p> |
1308 |
+ |
|
1309 |
|
The first modifier will also be used to shade the area leaving the antimatter volume and entering the regular volume. |
1310 |
|
If mod1 is void, the antimatter volume is completely invisible. |
1311 |
|
Antimatter does not work properly with the material type <a HREF="#Trans">"trans"</a>, |
1355 |
|
|
1356 |
|
<pre> |
1357 |
|
mod texdata id |
1358 |
< |
8+ xfunc yfunc zfunc xdfname ydfname zdfname vfname x0 x1 .. xf |
1358 |
> |
8+ xfunc yfunc zfunc xdfname ydfname zdfname funcfile x0 x1 .. xf |
1359 |
|
0 |
1360 |
|
n A1 A2 .. An |
1361 |
|
</pre> |
1362 |
|
|
1363 |
+ |
<p> |
1364 |
+ |
|
1365 |
|
</dl> |
1366 |
|
|
1367 |
|
<p> |
1501 |
|
[spacing] |
1502 |
|
</pre> |
1503 |
|
|
1504 |
+ |
<p> |
1505 |
+ |
|
1506 |
|
or: |
1507 |
|
|
1508 |
|
<pre> |
1540 |
|
[spacing] |
1541 |
|
</pre> |
1542 |
|
|
1543 |
+ |
<p> |
1544 |
+ |
|
1545 |
|
or: |
1546 |
|
|
1547 |
|
<pre> |
1570 |
|
A section of text meant to depict a picture, perhaps using a special purpose font such as hexbit4x1.fnt, calls for uniform spacing. |
1571 |
|
Reasonable magnitudes for proportional spacing are between 0.1 (for tightly spaced characters) and 0.3 (for wide spacing). |
1572 |
|
|
1573 |
+ |
<p> |
1574 |
+ |
|
1575 |
+ |
<dt> |
1576 |
+ |
<a NAME="Spectrum"> |
1577 |
+ |
<b>Spectrum</b> |
1578 |
+ |
</a> |
1579 |
+ |
|
1580 |
+ |
<dd> |
1581 |
+ |
The spectrum primitive is the most basic type for introducing spectral |
1582 |
+ |
color to a material. |
1583 |
+ |
Since materials only provide RGB parameters, spectral patterns |
1584 |
+ |
are the only way to superimpose wavelength-dependent behavior. |
1585 |
+ |
|
1586 |
+ |
<pre> |
1587 |
+ |
mod spectrum id |
1588 |
+ |
0 |
1589 |
+ |
0 |
1590 |
+ |
5+ nmA nmB s1 s2 .. sN |
1591 |
+ |
</pre> |
1592 |
+ |
|
1593 |
+ |
<p> |
1594 |
+ |
The first two real arguments indicate the extrema of the |
1595 |
+ |
spectral range in nanometers. |
1596 |
+ |
Subsequent real values correspond to multipliers at each wavelength. |
1597 |
+ |
The nmA wavelength may be greater or less than nmB, |
1598 |
+ |
but they may not be equal, and their ordering matches |
1599 |
+ |
the order of the spectral values. |
1600 |
+ |
A minimum of 3 values must be given, which would act |
1601 |
+ |
more or less the same as a constant RGB multiplier. |
1602 |
+ |
As with RGB values, spectral quantities normally range between 0 |
1603 |
+ |
and 1 at each wavelength, or average to 1.0 against a standard |
1604 |
+ |
sensitivity functions such as V(lambda). |
1605 |
+ |
The best results obtain when the spectral range and number |
1606 |
+ |
of samples match rendering options, though resampling will handle |
1607 |
+ |
any differences, zero-filling wavelenths outside the nmA to nmB |
1608 |
+ |
range. |
1609 |
+ |
A warning will be issued if the given wavelength range does not |
1610 |
+ |
adequately cover the visible spectrum. |
1611 |
+ |
|
1612 |
+ |
<p> |
1613 |
+ |
|
1614 |
+ |
<dt> |
1615 |
+ |
<a NAME="Specfile"> |
1616 |
+ |
<b>Specfile</b> |
1617 |
+ |
</a> |
1618 |
+ |
|
1619 |
+ |
<dd> |
1620 |
+ |
The specfile primitive is equivalent to the spectrum type, but |
1621 |
+ |
the wavelength range and values are contained in a 1-dimensional |
1622 |
+ |
data file. |
1623 |
+ |
This may be a more convenient way to specify a spectral color, |
1624 |
+ |
especially one corresponding to a standard illuminant such as D65 |
1625 |
+ |
or a library of measured spectra. |
1626 |
+ |
|
1627 |
+ |
<pre> |
1628 |
+ |
mod specfile id |
1629 |
+ |
1 datafile |
1630 |
+ |
0 |
1631 |
+ |
0 |
1632 |
+ |
</pre> |
1633 |
+ |
|
1634 |
+ |
<p> |
1635 |
+ |
As with the spectrum type, rendering wavelengths outside the defined |
1636 |
+ |
range will be zero-filled. |
1637 |
+ |
Unlike the spectrum type, the file may contain non-uniform samples. |
1638 |
+ |
|
1639 |
+ |
<p> |
1640 |
+ |
|
1641 |
+ |
<dt> |
1642 |
+ |
<a NAME="Specfunc"> |
1643 |
+ |
<b>Specfunc</b> |
1644 |
+ |
</a> |
1645 |
+ |
|
1646 |
+ |
<dd> |
1647 |
+ |
The specfunc primitive offers dynamic control over a spectral |
1648 |
+ |
pattern, similar to the colorfunc type. |
1649 |
+ |
|
1650 |
+ |
<pre> |
1651 |
+ |
mod specfunc id |
1652 |
+ |
2+ sfunc funcfile transform |
1653 |
+ |
0 |
1654 |
+ |
2+ nmA nmB A3 .. |
1655 |
+ |
</pre> |
1656 |
+ |
|
1657 |
+ |
<p> |
1658 |
+ |
Like the spectrum primitive, the wavelength range is specified |
1659 |
+ |
in the first two real arguments, and additional real values are |
1660 |
+ |
set in the evaluation context. |
1661 |
+ |
This function is fed a wavelenth sample |
1662 |
+ |
between nmA and nmB as its only argument, |
1663 |
+ |
and it returns the corresponding spectral intensity. |
1664 |
+ |
|
1665 |
+ |
<dt> |
1666 |
+ |
<a NAME="Specdata"> |
1667 |
+ |
<b>Specdata</b> |
1668 |
+ |
</a> |
1669 |
+ |
|
1670 |
+ |
<dd> |
1671 |
+ |
Specdata is like brightdata and colordata, but with more |
1672 |
+ |
than 3 specular samples. |
1673 |
+ |
|
1674 |
+ |
<pre> |
1675 |
+ |
mod specdata id |
1676 |
+ |
3+n+ |
1677 |
+ |
func datafile |
1678 |
+ |
funcfile x1 x2 .. xn transform |
1679 |
+ |
0 |
1680 |
+ |
m A1 A2 .. Am |
1681 |
+ |
</pre> |
1682 |
+ |
|
1683 |
+ |
<p> |
1684 |
+ |
The data file must have one more dimension than the coordinate |
1685 |
+ |
variable count, as this final dimension corresponds to the covered |
1686 |
+ |
spectrum. |
1687 |
+ |
The starting and ending wavelengths are specified in "datafile" |
1688 |
+ |
as well as the number of spectral samples. |
1689 |
+ |
The function "func" will be called with two parameters, the |
1690 |
+ |
interpolated spectral value for the current coordinate and the |
1691 |
+ |
associated wavelength. |
1692 |
+ |
If the spectrum is broken into 12 components, then 12 calls |
1693 |
+ |
will be made to "func" for the relevant ray evaluation. |
1694 |
+ |
|
1695 |
+ |
<dt> |
1696 |
+ |
<a NAME="Specpict"> |
1697 |
+ |
<b>Specpict</b> |
1698 |
+ |
</a> |
1699 |
+ |
|
1700 |
+ |
<dd> |
1701 |
+ |
Specpict is a special case of specdata, where the pattern is |
1702 |
+ |
a hyperspectral image stored in the common-exponent file format. |
1703 |
+ |
The dimensions of the image data are determined by the picture |
1704 |
+ |
just as with the colorpict primitive. |
1705 |
+ |
|
1706 |
+ |
<pre> |
1707 |
+ |
mod specpict id |
1708 |
+ |
5+ |
1709 |
+ |
func specfile |
1710 |
+ |
funcfile u v transform |
1711 |
+ |
0 |
1712 |
+ |
m A1 A2 .. Am |
1713 |
+ |
</pre> |
1714 |
+ |
|
1715 |
+ |
<p> |
1716 |
+ |
The function "func" is called with the interpolated pixel value |
1717 |
+ |
and the wavelength sample in nanometers, the same as specdata, |
1718 |
+ |
with as many calls made as there are components in "specfile". |
1719 |
+ |
|
1720 |
|
</dl> |
1721 |
|
|
1722 |
|
<p> |
1749 |
|
n A1 A2 .. An |
1750 |
|
</pre> |
1751 |
|
|
1752 |
+ |
<p> |
1753 |
+ |
|
1754 |
|
Foreground and background are modifier names that must be |
1755 |
|
defined earlier in the scene description. |
1756 |
|
If one of these is a material, then |
1779 |
|
m A1 A2 .. Am |
1780 |
|
</pre> |
1781 |
|
|
1782 |
+ |
<p> |
1783 |
+ |
|
1784 |
|
<dt> |
1785 |
|
<a NAME="Mixpict"> |
1786 |
|
<b>Mixpict</b> |
1825 |
|
[spacing] |
1826 |
|
</pre> |
1827 |
|
|
1828 |
+ |
<p> |
1829 |
+ |
|
1830 |
|
or: |
1831 |
|
|
1832 |
|
<pre> |
1842 |
|
[spacing] |
1843 |
|
</pre> |
1844 |
|
|
1845 |
+ |
<p> |
1846 |
+ |
|
1847 |
|
</dl> |
1848 |
|
|
1849 |
|
<p> |
1888 |
|
cfunc(x) : 10*x / sqrt(x) ; |
1889 |
|
</pre> |
1890 |
|
|
1891 |
+ |
<p> |
1892 |
+ |
|
1893 |
|
Many variables and functions are already defined by the program, and they are listed in the file rayinit.cal. |
1894 |
|
The following variables are particularly important: |
1895 |
|
|
1904 |
|
arg(i) - i'th real argument |
1905 |
|
</pre> |
1906 |
|
|
1907 |
+ |
<p> |
1908 |
+ |
|
1909 |
|
For mesh objects, the local surface coordinates are available: |
1910 |
|
|
1911 |
|
<pre> |
1912 |
|
Lu, Lv - local (u,v) coordinates |
1913 |
|
</pre> |
1914 |
|
|
1915 |
+ |
<p> |
1916 |
+ |
|
1917 |
|
For BRDF types, the following variables are defined as well: |
1918 |
|
|
1919 |
|
<pre> |
1922 |
|
CrP, CgP, CbP - perturbed material color |
1923 |
|
</pre> |
1924 |
|
|
1925 |
+ |
<p> |
1926 |
+ |
|
1927 |
|
A unique context is set up for each file so |
1928 |
|
that the same variable may appear in different |
1929 |
|
function files without conflict. |
1978 |
|
DATA, later dimensions changing faster. |
1979 |
|
</pre> |
1980 |
|
|
1981 |
+ |
<p> |
1982 |
+ |
|
1983 |
|
N is the number of dimensions. |
1984 |
|
For each dimension, the beginning and ending coordinate values and the dimension size is given. |
1985 |
|
Alternatively, individual coordinate values can be given when the points are not evenly spaced. |
2008 |
|
... |
2009 |
|
</pre> |
2010 |
|
|
2011 |
+ |
<p> |
2012 |
+ |
|
2013 |
|
The ASCII codes can appear in any order. N is the number of vertices, and the last is automatically connected to the first. |
2014 |
|
Separate polygonal sections are joined by coincident sides. |
2015 |
|
The character coordinate system is a square with lower left corner at (0,0), lower right at (255,0) and upper right at (255,255). |
2148 |
|
</h2> |
2149 |
|
|
2150 |
|
<pre> |
2151 |
< |
The Radiance Software License, Version 1.0 |
2151 |
> |
The Radiance Software License, Version 2.0 |
2152 |
|
|
2153 |
< |
Copyright (c) 1990 - 2021 The Regents of the University of California, |
2154 |
< |
through Lawrence Berkeley National Laboratory. All rights reserved. |
2153 |
> |
Radiance v6.0 Copyright (c) 1990 to 2025, The Regents of the University of |
2154 |
> |
California, through Lawrence Berkeley National Laboratory (subject to receipt |
2155 |
> |
of any required approvals from the U.S. Dept. of Energy). All rights reserved. |
2156 |
|
|
2157 |
|
Redistribution and use in source and binary forms, with or without |
2158 |
< |
modification, are permitted provided that the following conditions |
1882 |
< |
are met: |
2158 |
> |
modification, are permitted provided that the following conditions are met: |
2159 |
|
|
2160 |
< |
1. Redistributions of source code must retain the above copyright |
2161 |
< |
notice, this list of conditions and the following disclaimer. |
2160 |
> |
(1) Redistributions of source code must retain the above copyright notice, |
2161 |
> |
this list of conditions and the following disclaimer. |
2162 |
|
|
2163 |
< |
2. Redistributions in binary form must reproduce the above copyright |
2164 |
< |
notice, this list of conditions and the following disclaimer in |
2165 |
< |
the documentation and/or other materials provided with the |
1890 |
< |
distribution. |
2163 |
> |
(2) Redistributions in binary form must reproduce the above copyright |
2164 |
> |
notice, this list of conditions and the following disclaimer in the |
2165 |
> |
documentation and/or other materials provided with the distribution. |
2166 |
|
|
2167 |
< |
3. The end-user documentation included with the redistribution, |
2168 |
< |
if any, must include the following acknowledgment: |
2169 |
< |
"This product includes Radiance software |
2170 |
< |
(<a HREF="http://radsite.lbl.gov/">http://radsite.lbl.gov/</a>) |
1896 |
< |
developed by the Lawrence Berkeley National Laboratory |
1897 |
< |
(<a HREF="http://www.lbl.gov/">http://www.lbl.gov/</a>)." |
1898 |
< |
Alternately, this acknowledgment may appear in the software itself, |
1899 |
< |
if and wherever such third-party acknowledgments normally appear. |
2167 |
> |
(3) Neither the name of the University of California, Lawrence Berkeley |
2168 |
> |
National Laboratory, U.S. Dept. of Energy nor the names of its contributors |
2169 |
> |
may be used to endorse or promote products derived from this software |
2170 |
> |
without specific prior written permission. |
2171 |
|
|
2172 |
< |
4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
2173 |
< |
and "The Regents of the University of California" must |
2174 |
< |
not be used to endorse or promote products derived from this |
2175 |
< |
software without prior written permission. For written |
2176 |
< |
permission, please contact [email protected]. |
2172 |
> |
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
2173 |
> |
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
2174 |
> |
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
2175 |
> |
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
2176 |
> |
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
2177 |
> |
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
2178 |
> |
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
2179 |
> |
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
2180 |
> |
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
2181 |
> |
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
2182 |
> |
POSSIBILITY OF SUCH DAMAGE. |
2183 |
|
|
2184 |
< |
5. Products derived from this software may not be called "Radiance", |
2185 |
< |
nor may "Radiance" appear in their name, without prior written |
2186 |
< |
permission of Lawrence Berkeley National Laboratory. |
2187 |
< |
|
2188 |
< |
THIS SOFTWARE IS PROVIDED ``AS IS" AND ANY EXPRESSED OR IMPLIED |
2189 |
< |
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
2190 |
< |
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
2191 |
< |
DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
2192 |
< |
ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
2193 |
< |
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
1917 |
< |
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
1918 |
< |
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
1919 |
< |
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
1920 |
< |
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
1921 |
< |
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
1922 |
< |
SUCH DAMAGE. |
2184 |
> |
You are under no obligation whatsoever to provide any bug fixes, patches, |
2185 |
> |
or upgrades to the features, functionality or performance of the source |
2186 |
> |
code ("Enhancements") to anyone; however, if you choose to make your |
2187 |
> |
Enhancements available either publicly, or directly to Lawrence Berkeley |
2188 |
> |
National Laboratory, without imposing a separate written license agreement |
2189 |
> |
for such Enhancements, then you hereby grant the following license: a |
2190 |
> |
non-exclusive, royalty-free perpetual license to install, use, modify, |
2191 |
> |
prepare derivative works, incorporate into other computer software, |
2192 |
> |
distribute, and sublicense such enhancements or derivative works thereof, |
2193 |
> |
in binary and source code form. |
2194 |
|
</pre> |
2195 |
+ |
|
2196 |
+ |
<p> |
2197 |
|
|
2198 |
|
<hr> |
2199 |
|
|