| 15 |
|
][ |
| 16 |
|
.B "\-y yres" |
| 17 |
|
][ |
| 18 |
< |
.B "\-i{f|d} |
| 18 |
> |
.B "\-i{a|f|d} |
| 19 |
|
][ |
| 20 |
< |
.B "\-o{f|d|c} |
| 20 |
> |
.B "\-o{a|f|d|c} |
| 21 |
|
] |
| 22 |
|
.B DCspec |
| 23 |
|
[ |
| 34 |
|
][ |
| 35 |
|
.B "\-i{f|d} |
| 36 |
|
][ |
| 37 |
< |
.B "\-o{f|d} |
| 37 |
> |
.B "\-o{f|d|c} |
| 38 |
|
] |
| 39 |
|
.B Vspec |
| 40 |
|
.B Tbsdf |
| 106 |
|
The standard output of |
| 107 |
|
.I dctimestep |
| 108 |
|
is either a color vector with as many RGB triplets |
| 109 |
< |
as there are rows in the View matrix, or a combined |
| 110 |
< |
.I Radiance |
| 109 |
> |
as there are rows in the View matrix, or a combined Radiance |
| 110 |
|
picture. |
| 111 |
|
Which output is produced depends on the first argument. |
| 112 |
|
A regular file name will be loaded and interpreted as a matrix to |
| 113 |
|
generate a color results vector. |
| 114 |
|
A file specification containing a '%d' format string will be |
| 115 |
< |
interpreted as a list of |
| 117 |
< |
.I Radiance |
| 115 |
> |
interpreted as a list of Radiance |
| 116 |
|
component pictures, which will be summed according to the computed |
| 117 |
|
vector. |
| 118 |
|
.PP |
| 135 |
|
A header will normally be produced on the output, unless the |
| 136 |
|
.I \-h |
| 137 |
|
option is specified. |
| 138 |
+ |
Default output format is ASCII text. |
| 139 |
|
The |
| 140 |
|
.I \-of, |
| 141 |
|
.I \-od, |
| 143 |
|
.I \-oc |
| 144 |
|
option may be used to specify IEEE float, double, or RGBE (picture) output |
| 145 |
|
data, respectively. |
| 146 |
+ |
The |
| 147 |
+ |
.I \-oc |
| 148 |
+ |
option is set automatically if input is a collection of RGBE or XYZE pictures. |
| 149 |
|
.SH EXAMPLES |
| 150 |
|
To compute workplane illuminances at 3:30pm on Feb 10th: |
| 151 |
|
.IP "" .2i |
| 160 |
|
.IP "" .2i |
| 161 |
|
gensky 12 21 14 | genskyvec | dctimestep IllPts.vmx Blinds20.xml Window1.dmx > Ill_12-21-14.dat |
| 162 |
|
.PP |
| 163 |
< |
To compute Window2's contribution to an interior view at 12 noon on the Summer solstice: |
| 163 |
> |
To compute Window2's contribution to an interior view at 12 noon on the summer solstice: |
| 164 |
|
.IP "" .2i |
| 165 |
|
gensky 6 21 12 | genskyvec | dctimestep view%03d.hdr Blinds30.xml |
| 166 |
|
Window2.dmx > view_6-21-12.hdr |
| 198 |
|
since matrix operations are carried out using 32-bit "float" values. |
| 199 |
|
This take less memory, but can also be less accurate than an |
| 200 |
|
equivalent invocation of |
| 201 |
< |
.I rmtxop(1), |
| 202 |
< |
which performs all operations on 64-bit "double" values. |
| 201 |
> |
.I rmtxop(1) |
| 202 |
> |
or |
| 203 |
> |
.I rcomb(1), |
| 204 |
> |
which perform all operations on 64-bit "double" values. |
| 205 |
> |
.PP |
| 206 |
> |
.I Dctimestep |
| 207 |
> |
does not accept on input or produce on output Radiance |
| 208 |
> |
spectral pictures. |
| 209 |
> |
This is a limitation of the implementation and its underlying |
| 210 |
> |
data representation. |
| 211 |
> |
Use instead the similar |
| 212 |
> |
.I pvsum(1) |
| 213 |
> |
tool for spectral input and output. |
| 214 |
|
.SH AUTHOR |
| 215 |
|
Greg Ward |
| 216 |
|
.SH "SEE ALSO" |
| 217 |
< |
gendaymtx(1), genskyvec(1), getinfo(1), |
| 218 |
< |
mkillum(1), rcollate(1), rcontrib(1), rcrop(1), |
| 217 |
> |
dcglare(1), gendaymtx(1), genskyvec(1), getinfo(1), mkillum(1), |
| 218 |
> |
pvsum(1), ra_rgbe(1), rcollate(1), rcomb(1), rcontrib(1), rcrop(1), |
| 219 |
|
rfluxmtx(1), rmtxop(1), rtrace(1), vwrays(1) |
