xshowtrace(1)
interactively show rays traced on RADIANCE image under X11
SYNOPSIS
xshowtrace
[
-s
][
-T
][
rtrace options
]
octree
picture
DESCRIPTION
Xshowtrace
takes a RADIANCE octree and a picture file
and displays it on an X11 window server using
ximage(1).
The picture should have been created from a previous
rpict(1)
or
rvu(1)
calculation using the given octree.
Once the image is displayed, the user can use the 't' command of
ximage
to select points on the image to display the ray tree.
Rtrace
then produces a ray tree, which
xshowtrace
will display (in red on a color screen).
The
-s
option slows the display of each ray traced to make it easier to
follow the process.
The
-T
option traces rays to light sources, which are normally hidden.
AUTHOR
Greg Ward
BUGS
If the pointer is moved between the time 't' is pressed and
xshowtrace
starts drawing rays, the rays will be displaced.
