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In addition to the WriteOOGL
and Geomview
commands
described above, the package `OOGL.m' also defines the command
WriteRI
b which writes a 3D graphics object to a RenderMan RIB
file: WriteRIB[file, graphics]
writes graphics
to file file. RenderMan is a commercial rendering system available
from Pixar, Inc., which can produce extremely high quality images.
In[1] := <<OOGL.m In[2] := <<Graphics/Polyhedra.m In[3] := Graphics3D[Cube[]] Out[3] := -Graphics3D- In[4] := WriteRIB["cube.rib", %3] Out[4] := -Graphics3D- |
This generates the file `math.ri'b. This is a ready-to-render RIB
file of the given geometry, using a default camera position, lighting,
and the "plastic" shader. In a shell window, type render
cube.ri
b to generate the image file `mma.tiff'. Of course, you
need to have RenderMan installed for this to work. A shortcut to render
from inside Mathematica is WriteRIB["!render", foo]
.
WriteRI
b works by first converting the Mathematica graphics
object to OOGL format using WriteOOGL
and then calls an external
program `oogl2ri'b to convert OOGL to RIB format. The
oogl2rib program takes several options which you can specify in a
string as an optional third argument to WriteRI
b. The default
option string is " -n mma.tiff "
, which indicates that the RIB
file should generate a rendered TIFF file named `mma.tiff'. A
particularly useful option is -g
, which tells oogl2rib to
convert only the geometry into a RIB fragment. You can insert that
fragment into a full RIB file of your own making with camera positions
and shaders of your choice, to harness the full power of RenderMan.
The full usage of oogl2rib is:
oogl2rib [-n name] [-B r,g,b] [-w width] [-h height] [-fgb] [infile] [outfile] |
By default it reads from stdin and writes to stdout. Either infile or outfile may be `-', which means use stdin/stdout. The options are:
-n name
Use name for the name of the rendered TIFF file (default "geom.tiff") or framebuffer window (default "geom.rib").
-B r,g,b
Use background color (r,g,b). Each component ranges from 0 to 1. Default: none.
-w width -h height
Rendered frame will be width by height pixels.
-f
RIB file renders to on-screen framebuffer instead of TIFF file.
-g
Output only the geometry in RIB format.
-b
Output only a Quick Renderman clip object. Ignores -nBwhf.
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This document was generated by Steve M. Robbins on June, 22 2006 using texi2html 1.76.