| 612 |
|
.SH EXAMPLES |
| 613 |
|
To compute radiance values for the rays listed in samples.inp: |
| 614 |
|
.IP "" .2i |
| 615 |
< |
rtrace -ov scene.oct < samples.inp > radiance.out |
| 615 |
> |
rtrace \-ov scene.oct < samples.inp > radiance.out |
| 616 |
|
.PP |
| 617 |
|
To compute illuminance values at locations selected with the 't' |
| 618 |
|
command of |
| 619 |
|
.I ximage(1): |
| 620 |
|
.IP "" .2i |
| 621 |
< |
ximage scene.pic | rtrace -h -x 1 -i scene.oct | rcalc -e '$1=47.4*$1+120*$2+11.6*$3' |
| 621 |
> |
ximage scene.pic | rtrace \-h \-x 1 \-i scene.oct | rcalc \-e '$1=47.4*$1+120*$2+11.6*$3' |
| 622 |
|
.PP |
| 623 |
|
To record the object identifier corresponding to each pixel in an image: |
| 624 |
|
.IP "" .2i |
| 625 |
< |
vwrays -fd scene.pic | rtrace -fda `vwrays -d scene.pic` -os scene.oct |
| 625 |
> |
vwrays \-fd scene.pic | rtrace \-fda `vwrays \-d scene.pic` \-os scene.oct |
| 626 |
|
.PP |
| 627 |
|
To compute an image with an unusual view mapping: |
| 628 |
|
.IP "" .2i |
| 629 |
< |
cnt 640 480 | rcalc -e 'xr:640;yr:480' -f unusual_view.cal | rtrace |
| 630 |
< |
-x 640 -y 480 -fac scene.oct > unusual.pic |
| 629 |
> |
cnt 640 480 | rcalc \-e 'xr:640;yr:480' \-f unusual_view.cal | rtrace |
| 630 |
> |
\-x 640 \-y 480 \-fac scene.oct > unusual.pic |
| 631 |
|
.SH ENVIRONMENT |
| 632 |
|
RAYPATH the directories to check for auxiliary files. |
| 633 |
|
.SH FILES |
