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- === Tcl-SIPP 3.0a ===
-
- This package provides a Tcl command interface to the SIPP rendering
- program. SIPP, the SImple Polygon Processor, is a library for creating
- 3-dimensional scenes and rendering them using a scan-line z-buffer algorithm.
- Tcl is an easy to use, powerful, interpretive programming language, that is
- designed to be imbeddable in applications.
-
- Tcl-SIPP is a set of Tcl commands used to programmed SIPP without having to
- write and compile C code. Commands are used to specify surfaces, objects,
- scenes and rendering options. Scenes may be rendered to files in the PPM
- format or in Utah Raster Toolkit RLE format.
-
- This interface greatly speeds the development of scenes because no compile
- and link phase is required. Data is represented in a simple ASCII form.
- This is particularly useful when for producing 3D scenes from ASCII data
- generated by other programs. Since most of the work in creating a scene is
- still done in libsipp, the is only a small performance cost in programming from
- Tcl.
-
-
- REQUIREMENTS
- ============
- The following software packages are required to build and use Tcl-SIPP:
-
- o SIPP 3.0 - The SImple Polygon Processor
- wuarchive.wustl.edu:/graphics/graphics/packages/sipp/sipp-3.0.tar.Z
- isy.lie.se:/src/sipp-3.0.tar.Z (note: this site is in Sweden)
-
- o Tcl 6.4 - The Tcl command language
- sprite.bekerley.edu:/pub/tcl/tcl6.4.tar.Z
-
- o TclX6.4c - Extended Tcl, an add on package for Tcl.
- sprite.bekerley.edu:/pub/tcl/tclX6.4c.tar.Z
- barkley.bekerley.edu:/tcl/extensions/tclX6.4c.tar.Z
-
- o Utah Raster Toolkit (optional) - This tool kit is great, check it out.
- cs.utah.edu:/pub/urt/urt-3.0.tar.Z
- cs.utah.edu:/pub/urt/urt-3.0.patch1
- cs.utah.edu:/pub/urt/urt-3.0.patch2.Z
-
-
- VERSION NUMBERING
- =================
- The Tcl-SIPP version number is a concatenation of the SIPP library version
- number that it works with and a single letter indicating the Tcl interface
- version. The version may also include a patch level if Tcl-SIPP has been
- patched. This is Tcl-SIPP 3.0a.
-
-
- DIRECTORY STRUCTURE
- ===================
- The following is the directory structure of the Tcl-SIPP code:
-
-
- tsipp3.0a
- src sippsrc man tests demos help
-
- o src - The source directory containing the Tcl interface to SIPP.
-
- o sippsrc - Code from the SIPP that has been modified for use with Tcl-SIPP.
- One file is modified (libsipp/rendering.c) to support optionally processing
- scan lines in the opposite direction. This change was made to support the
- RLE file format. The file rendering.c is included in the modified form along
- with a context diff. This code has been submitted to the SIPP developers.
- Also contains a fix to the libsipp function spotlight_create.
-
- o man - Contains the Tcl-SIPP manual page.
-
- o tests - Contains basic tests that validate the individual commands.
-
- o demos - A port of the demo programs from SIPP. These also server to test
- Tcl-SIPP functionality not checked by the basic tests.
-
- o help - This directory is not actually included with the distribution, but
- is built. It contains help files that can read via the Extended Tcl help
- system.
-
-
- BUILDING
- ========
- Sipp 3.0, Tcl 6.4 and Extended Tcl 6.4c should all have been built before
- building Tcl-SIPP. Extended Tcl should also be installed in its configured
- location, if not you will need to set the TCLDEFAULT environment variable
- to point to the TCLDEFAULT file in the Extended Tcl build directory before
- running Tcl-SIPP.
-
- Edit "Config.mk" to set the compilation options and to point to the
- other packages required by Tcl-SIPP. Follow the instructions in Config.mk
- carefully.
-
- Enter the command:
-
- make
-
- to compile and link Tcl-SIPP. This should result in an interactive Tcl
- interpreter being created in top-level directory called tsipp. This program
- is the Extended Tcl shell with the Tcl-SIPP commands built-in. A very minimal
- test is to run tsipp to see if you get an interactive prompt (tsipp>). Use
- the exit command or enter an EOF to exit tsipp.
-
-
- TESTING
- =======
- A basic set of tests to validate Tcl-SIPP is run with the command:
-
- make test
-
- This will do some basic validation of the commands. If the RLE libraries are
- linked into Tcl-SIPP, then the URT program `rlehdr' should be in a directory in
- the PATH, or some tests will fail.
-
-
- DEMOS
- =====
- The demostration pictures are built by entering the command:
-
- make demo
-
- If you built Tcl-SIPP with the RLE library, the RLE format files will be
- built by default. IF RLE is not available, PPM format files will be build.
- The can be overridden in the Config.mk file. Other options controlling the
- creation of the demo images maye be set in Config.mk.
-
- The programs to create these images are ports of the C programs provided
- with SIPP. They are good example on how to use Tcl-SIPP. If your generate
- RLE images, use the Utah Raster Toolkit program getx11 (or what ever get
- command is appropriate for your environment). to display them. If you have
- a 256 color display instead of full color, try the following:
-
- cat demos/*.rle | rlequant | getx11
-
- A RLE comment is added to the image to specify a correct image gamma for
- these images. See Utah Raster Toolkit Documentation for more details.
-
- If you create PPM images, use your favorite view capable of handling them,
- or use the PBMPlus toolkit to convert them to a format that you can view.
-
-
- BUILDING HELP FILES
- ===================
- Extended Tcl help files may be extracted from the man page with the
- command:
-
- make buildhelp
-
- Note that this requires nroff to be installed on your system. To install the
- help files copy everything that was created under the help directory into the
- help directory under the directory specified by TCL_TCLDIR in your Extended
- Tcl Config.mk file (usually /usr/local/tcl/help). Note that there is a bug
- in the current Extended Tcl buildhelp.tcl that causes all help file names
- to be truncated to 14 characters, even on systems that have long file names.
-
- INSTALLING
- ==========
- No install script currently exists for Tcl-SIPP. Install the help files
- as described above. Copy tsipp to your favorite bin directory and
- man/tsipp.man to the appropriate manual directory.
-
-
- AUTHOR
- ======
- Mark Diekhans - markd@grizzly.com
-
- Please send all bugs, questions or comments to the above address
-
-