geomview [ -b r g b ] [-c commandfile] [-wins #windows ] [-nopanels] [-wpos xmin ymin xsize ysize] [-wpos -] [-wpos xsize,ysize[@xmin,ymin]] [-e external-module-name] [-M[cg][sp] pipename] [-start external-module-name [arg ...] --] [-run external-module-path [arg ...] --] [ file ... ]
Geomview is an interactive geometry viewer written at the Geometry Center. It displays the objects in the files given on the command line and allows the user to view and manipulate them interactively.
The present version (1.4) of geomview runs on Silicon Graphics Irises and NeXT workstations. We are very interested in hearing about any problems you may have using it; see below for information on how to contact us.
In addition to providing interacive control over a world of objects via the mouse and keyboard, geomview has an interpreted language of commands for controlling almost every aspect of its display. It can execute files containing statements in this language, and it can communicate with other programs using the language. See geomview(5), e.g. the file man/cat5/geomview.5 in the geomview distribution, for more details of the language.
This manual page serves only as a (very) terse reference manual for geomview. For a gentler introduction to the program and the format of the data files it can read, see the documents "overview" and "oogltour" in the "doc" directory of the geomview distribution. There is a also tutorial for how to write external modules in the "src/bin/example" directory (available only in the source distribution).
Actually listens to the named pipe ``/tmp/geomview/objectname'';
you can achieve the same effect with the shell commands:
mkdir /tmp/geomview;
mknod /tmp/geomview/objectname p
(assuming the directory and named pipe don't already exist), then
executing the geomview command:
(geometry objectname < /tmp/geomview/objectname)
Note: on the NeXT, -M listens on a UNIX-domain socket rather than a named pipe.
The format of the files read by geomview is described in oogl(5); type "man 5 oogl", or see the file man/cat5/oogl.5 in the geomview distribution, for details.
Note to users of MinneView (the precursor to geomview): geomview can read MinneView files, but MinneView cannot read all geomview files.
Immediately upon starting up geomview reads and executes the commands in the system-wide .geomview file in the "data" subdirectory of the geomview directory. Then, if there is a file named .geomview in the current directory, it executes the commands in that file. If no in the user's home directory, and executes it if found. The startup file of an individual user overrides the systemwide defaults, since later commands take precedence over earlier ones.
Geomview has the ability to interact via its command language with other programs, called "external modules". Many such modules have been written and appear in the "Application" browser in the main geomview panel. To invoke a module you click the mouse on the module's entry in this browser. This starts the module and adds an addition red entry to the browser which represents the running instance of that module. You can terminate the module by clicking on the red entry. Modules are documented separately from geomview. See the manual page for each module for details.
Geomview looks for external modules in a special directory for modules. In the geomview distribution tree this is the "bin/sgi" subdirectory. A module consists of two files: the executable program, and a "module init file", which is a whose name is ".geomview-" followed by the module name. The module init file tells geomview how to run that program. Be sure to always keep these two files together; geomview needs both of them in order to run the module. To install a new module, simply put the module's executable file and its init file in your geomview's module directory. The next time you run geomview, it will know about that module.
Geomview can actually looks for modules in a list of directories; by default only the "bin/sgi" directory is on this list. See the set-emodule-path command in geomview(5) for details.
There is a tutorial for how to write external modules in the "src/bin/example" directory.
An external module init file is the file that tells geomview how to run that module. Its name must be ".geomview-" followed by the name of the module, e.g. ".geomview-foo". It should contain geomview commands; typically it will contain a single emodule-define command which enters the module into geomview's application browser:
(emodule-define "Foo" "foo")The first string is the name that appears in the browser. The second string is the command to invoke the module. It may contain arguments; in fact it can be an arbitrary shell command.
Many geomview operations are available from the keyboard. Hitting the "?" button on the main panel, or typing "?" with the cursor in any window, causes geomview to print a message on standard output listing all the keyboard shortcuts.
Keyboard commands apply while cursor is in any graphics window and most control panels. Most commands allow one of the following selection prefixes (if none is provided the command applies to the current object): g world geom g# #'th geom g* All geoms c current camera c# #'th camera c* All cameras Many allow a numeric prefix: if none they toggle or reset current value. Appearance: Draw: Shading: Other: af Faces 0as Constant av eVert normals: always face viewer ae Edges 1as Flat #aw Line Width (pixels) an Normals 2as Smooth #ac edges Closer than faces(try 5-100) ab Bounding Boxes aV draw Vectors ax remove object's Appearance Color: aT allow transparency Cf Ce Cn Cb CB face/edge/normal/bbox/backgnd Motions: Viewing: r rotate [ Leftmouse=X-Y plane, 0vp Orthographic view t translate Middle=Z axis, 1vp Perspective view z zoom Shift=slow motion, vd Draw other views' cameras f fly in r/t modes. ] #vv field of View s scale [Left=turn, Middle=speed ] #vn near clip distance #vf far clip distance w/W recenter/all v+ add new camera h/H halt/halt all vx cursor on/off @ select center of motion (e.g. g3@) vb backfacing poly cull on/off show Panel: Pm Pa Pl Po main/appearance/lighting/obscure Pt Pc PC Pf tools/cameras/Commands/file-browser Ps P- saving/read commands from tty Lights: ls le Show lights / Edit Lights Metric: me mh mo ms Euclidean Hyperbolic OutsideHyp Spherical Other: #N normalization: 0N none, 1N each, 2N all < load geometry/command file dd delete current object >/Ps save state to file TV NTSC mode toggle p/(rightmouse doubleclick) pick as current target object Renderman: RR send RIB output to <fileprefix>NNN.rib (default fileprefix == "geom") RC Emulate lines using cylinders (default) RP Emulate lines using polygons Ra choose ASCII RIB format (default) Rb choose BINARY RIB format RD Toggle display type (.tiff file or onscreen window)
The "geomview" command is actually a shell script that sets various environment variables which tell geomview about your local setup, and then invokes the geomview executable program "gvx". Do not run "gvx" by itself; always invoke geomview with the "geomview" shell script.
Stuart Levy Tamara Munzner Mark Phillips slevy@geom.umn.edu munzner@geom.umn.edu mbp@geom.umn.edu Celeste Fowler Nathaniel Thurston fowler@geom.umn.edu njt@geom.umn.edu The National Science and Technology Research Center for Computation and Visualization of Geometric Structures (The Geometry Center) University of Minnesota 1300 South Second Street Minneapolis, MN 55454 USA software@geom.umn.edu
Zoom and scale have no inertia.
Constrained motion (to X or Y axis) no longer works.
Spherical mode doesn't work on VGXes.
If you find a bug, please let us know about it by sending email to software@geom.umn.edu, or by contacting us at the address above.