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- PSC P3D VERSION 2.2 AVAILABLE
- -----------------------------
-
- The fifth release of the Pittsburgh Supercomputing Center's P3D
- software is now (finally!) available. This software uses lisp with slight
- extensions to store three-dimensional models; we are using it as the
- standard format for 3D models within the PSC. A simple lisp
- interpreter is included with the P3D release, so there is no need to
- have access to any vendor's lisp to run this software.
-
- The copyright to the P3D software is owned by Carnegie Mellon
- University, of which the Pittsburgh Supercomputing Center is a
- department. We copyright it so that no one can grab it and market it
- as their own. Feel free to copy it and distribute it around your own
- site, and to modify it. We ask that you do not redistribute it, as we
- want new users to get it from us so we can keep track of it and
- maintain a mailing list. If you have modifications to the code or bug
- reports, or would like to arrange to redistribute it, please contact
- us. This code is provided 'as is' without expressed or implied
- warranty; the PSC makes no representations about its suitability for
- any particular purpose.
-
-
- HIGHLIGHTS
-
- The most fundamental change with this release is that the P3D interpreter
- now stores geometrical implementation in a much more compact form. This
- will allow models of roughly twice the earlier size to fit in a machine's
- physical memory.
-
- There have been numerous improvements to the Motif user interface to
- the P3D interpreter. That interface can now generate flybys of P3D
- models, for example. The interface will also link and run with the
- GL renderer on Silicon Graphics and IBM RS6000 platforms.
-
- The DrawP3D library has been improved considerably. Two interactive
- renderers, a version of the Painter renderer and an interface to Silicon
- Graphics GL, have been added. This means that programs calling
- DrawP3D can now draw directly to a workstation screen. Numerous bugs
- have also been patched.
-
- MarchP3D has been completely rewritten to take advantage of the new
- functionality of DrawP3D, and now uses DrawP3D's isosurface routine
- rather than that from the Scry package from Lawrence Berkeley Labs.
- This is now a much more useful and flexible tool. It can, for
- example, now do on-screen rotations of the isosurfaces it generates.
-
- The Sun Phigs renderer has been rewritten to match the new version of
- Sun Phigs, and will link and run with the Motif or Xview user interfaces.
-
-
- RENDERERS
-
- The P3D software currently supports nine renderers. They are:
-
- Painter, a Painter's Algorithm renderer. This runs on just
- about everything, but requires the PSC's DrawCGM library and
- can only draw flat-shaded polygons. If you need the DrawCGM
- library, get the GPlot software distribution by anonymous
- FTP from calpe.psc.edu, in the directory pub/gplot.
-
- Silicon Graphics Inc. GL language renderer interface. This
- is the recommended renderer for SGI workstations and IBM R6000
- workstations.
-
- Generic Phigs renderer interface. This renderer should work with
- only minor modification on any implementation of Phigs, but because
- (like generic Phigs) it does not handle light sources it is not
- the recommended renderer on any platform.
-
- Sun Phigs+ renderer interface. This renderer works with
- Sun Phigs. Try this renderer if you have a Sun platform,
- and if you don't like the results, switch to the Painter
- renderer.
-
- DEC Phigs+ renderer interface. This renderer should work with
- DEC Phigs. It is the recommended renderer for DEC platforms
- with 24 bit displays and graphics accelerators, for example
- accelerated DECStation 5000's. For 8 bit DECStations, one might
- want to try both this renderer and the Painter renderer.
-
- Dore renderer, which is an interface to the Kubota Pacific Dore
- renderer software. This is the recommended renderer for
- Stardent workstations.
-
- Rayshade ray tracer renderer interface. This renderer is an
- interface to Craig Kolb and associates' Rayshade ray tracer
- (version 3.0, patch level 5). It produces some very nice images,
- very slowly. The current implementation is a first release
- of the interaface and does not properly support all P3D
- model elements (for example, vertex colors).
- See the associated document in the 'doc' subdirectory for
- more information on the limitations of the renderer, but don't
- get too discouraged by them; it can still do an excellent job
- on a wide range of models. This renderer should run on any
- platform. The Rayshade renderer also uses the DrawCGM library
- by default, but can be switched to using the Utah Raster Library
- by applying the proper -D option to the compilation of
- src/rayshade/outputp.c . Note that some optimizing compilers
- have problems with some of the routines in src/rayshade; if
- you have problems with the ray tracer try recompiling some or
- all of these routines without -O. This renderer supports
- facilities for doing multiple scenes for animation purposes.
-
- ART ray tracer interface. This renderer is an interface to
- the ART ray tracer, distributed with the VORT package. VORT
- is available by anonymous FTP from gondwana.ecr.mu.oz.au.
- This is currently the best free high-quality renderer for P3D.
- The ART folks have been very generous in supporting new
- features for us, and now almost all aspects of P3D are well
- supported. This renderer also supports facilities for doing
- multiple scenes for animation purposes. See doc/art_ren.t for
- further information. This renderer interface should run on
- any platform.
-
- Pixar RenderMan interface. This renderer links against
- Pixar's RenderMan renderer interface to produce high quality
- rendered images. This software is generally significantly
- faster than a ray tracer, for example ART. The software was
- developed using Pixar's own Developer's Renderman product, but
- in theory it should work with any renderer with a
- Renderman-compatible interface. Contact us if you don't have
- the library but are interested in an executable which can
- output models in the RenderMan 'RIB' format. This renderer
- and Developer's Renderman should run on any Unix platform.
-
-
- GETTING THE CODE
-
- The code is available via anonymous FTP from the machine
- ftp.psc.edu. If you do not already have the PSC's GPlot and DrawCGM
- software, you can get that also from the same machine. (You will need
- GPlot/DrawCGM if you are using the Painter renderer, which is the
- recommended renderer on machines lacking special 3D graphics
- hardware). To install the software on a Unix system, do the
- following:
-
- - FTP to ftp.psc.edu (internet address 128.182.62.148).
-
- - Log in as anonymous, with your name as password.
-
- - cd to the directory pub/p3d (the GPlot software is in pub/gplot).
-
- - Set file transfer mode to Binary or Image.
-
- - Get p3d_2_2.tar.Z, (or p3d_2_2.tar if your machine doesn't
- have the 'uncompress' utility).
-
- - Move the tar file to an otherwise empty directory on your machine.
-
- - Uncompress the tar file with the command 'uncompress p3d_2_2.tar'.
- If this doesn't work, you should have gotten the uncompressed
- version; see above.
-
- - Extract the contents of the tar file with the command
- 'tar -xvf p3d_2_2.tar' . (On Silicon Graphics machines, you
- will want to use the command 'tar -xvof p3d_2_2.tar'.)
-
- - Follow the directions in the README file contained in the tar file.
-
- To install the software on a VMS system, do the following:
-
- - FTP to ftp.psc.edu (internet address 128.182.62.148).
-
- - Log in as anonymous, with your name as password.
-
- - cd to the directory pub/p3d (the GPlot software is in pub/gplot).
-
- - Get tar2vms.c, a freely distributable tool copyrighted by Sid Penstone,
- Dept. of Electrical Engineering, Queen's University, Kingston, Ontario,
- Canada K7L3N6.
-
- - Set file transfer mode to Binary or Image.
-
- - Get p3d_2_2.tar, giving it the local name p3d_2_2.tar .
-
- - Move the tar file and tar2vms.c to an otherwise empty directory on
- your machine.
-
- - Compile and link tar2vms.c. It's a stand-alone program needing no
- libraries except the usual sys$library:vaxcrtl.olb.
-
- - Give the following commands to unpack the tar file:
-
- $ assign p3d_2_2.tar tape
- $ tar2vms:== $dev:[directory]tar2vms.exe
- (where dev and directory are your current default device
- and directory).
- $ tar2vms xv
-
- - Follow the directions in the README file contained within the tar file.
-
-
- If you get this software, please send your name and network address
- to me at welling@psc.edu so that we can send you announcements of
- updates and bug fixes. If you find bugs, that is also the address to
- which to send the bug reports.
-
-
- -Joel Welling
- Pittsburgh Supercomputing Center
- welling@psc.edu
-
-