SGI Freeware 1999 August

home *** CD-ROM | disk | FTP | other *** search

/ SGI Freeware 1999 August / SGI Freeware 1999 August.iso / dist / fw_geomview.idb / usr / freeware / catman / u_man / cat1 / geomview.Z / geomview

Wrap

Text File | 1999-01-26 | 18.7 KB | 463 lines

GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) GGGGeeeeoooommmmeeeettttrrrryyyy CCCCeeeennnntttteeeerrrr ((((DDDDeeeecccceeeemmmmbbbbeeeerrrr 11110000,,,, 1111999999996666)))) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) NNNNAAAAMMMMEEEE Geomview - interactive geometry viewer SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS geomview [-opengl] [-b _r _g _b] [-c _c_o_m_m_a_n_d_f_i_l_e] [-wins #_w_i_n_d_o_w_s] [-nopanels] [-wpos _x_m_i_n _y_m_i_n _x_s_i_z_e _y_s_i_z_e] [-wpos _x_s_i_z_e,_y_s_i_z_e[@_x_m_i_n,_y_m_i_n]] [-e _e_x_t_e_r_n_a_l-_m_o_d_u_l_e- _n_a_m_e] [-M[cg][sp] _p_i_p_e_n_a_m_e] [-start _e_x_t_e_r_n_a_l-_m_o_d_u_l_e- _n_a_m_e [_a_r_g ...] --] [-run _e_x_t_e_r_n_a_l-_m_o_d_u_l_e- _p_a_t_h [_a_r_g ...] --] [_f_i_l_e ...] DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN 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 manipu- late them interactively. The present version (1.6.1) of geomview runs on Silicon Graphics Irises, NeXT, and X Window System 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 interactive control over a world of objects via the mouse and keyboard, geomview has an inter- preted language of commands for controlling almost every as- pect of its display. It can execute files containing state- ments 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. TTTTUUUUTTTTOOOORRRRIIIIAAAALLLL This manual page serves only as a (very) terse reference manual for geomview. For a gentler introduction to the pro- gram and the format of the data files it can read, see "overview" and "oogltour" in the "doc" directory of the geomview distribution, or better, see the full manual: "geomview.tex" or "geomview.ps", also in the "doc" directo- ry. The source distribution also includes a tutorial for how to write external modules in the "src/bin/example" directory. OOOOPPPPTTTTIIIIOOOONNNNSSSS -opengl Some geomview distributions include two gvx executables -- one which displays images using only X windows graphics, and another which uses Open GL. The ----ooooppppeeeennnnggggllll (or ----OOOOGGGGLLLL) option selects the latter, if it exists. If Page 1 (printed 12/22/98) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) GGGGeeeeoooommmmeeeettttrrrryyyy CCCCeeeennnntttteeeerrrr ((((DDDDeeeecccceeeemmmmbbbbeeeerrrr 11110000,,,, 1111999999996666)))) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) used, this option mmmmuuuusssstttt bbbbeeee tttthhhheeee ffffiiiirrrrsssstttt ooooppppttttiiiioooonnnn ggggiiiivvvveeeennnn ttttoooo ggggeeeeoooommmmvvvviiiieeeewwww. -b Set the window background color to the given r g b values. -c Interpret the commands in commandfile, which may be ``-'' for standard input. The command language is described in geomview(5). Commands may be supplied literally, as in ``-c "(ui-panel main off)"''; since they include parentheses, they must be quoted. -wins Causes geomview to initially display #windows camera windows. -wpos Specifies the initial location and size of the first camera window. With ``-'', you are prompted for window placement. -M _o_b_j_n_a_m_e Display (possibly dynamically changing) geometry (or commands) sent via ``ttttooooggggeeeeoooommmmvvvviiiieeeewwww ----gggg _o_b_j_n_a_m_e [_g_e_o_m_v_i_e_w- _s_h_e_l_l-_c_o_m_m_a_n_d]'' or ``ggggeeeeoooommmmssssttttuuuuffffffff _o_b_j_n_a_m_e _f_i_l_e ...''. The data appears as a geomview object named _o_b_j_n_a_m_e. Actually listens to the named pipe ``/tmp/geomview/_o_b_j_n_a_m_e''; you can achieve the same ef- fect with the shell commands: mkdir /tmp/geomview; mknod /tmp/geomview/_o_b_j_n_a_m_e p (assuming the directory and named pipe don't already exist), then executing the geomview command: (geometry _o_b_j_n_a_m_e < /tmp/geomview/_o_b_j_n_a_m_e) -M[cg][sp] _p_i_p_e_n_a_m_e The ----MMMM option accepts modifiers: a 'g' suffix expects geometry data (the default), while 'c' suffix expects gcl commands. A 'p' implies the connection should use a named pipe (the default on the Iris), while 's' im- plies using a UNIX-domain socket (default on the NeXT). So ----MMMMccccssss ffffrrrreeeedddd selects reading commands from the UNIX- domain socket named ////ttttmmmmpppp////ggggeeeeoooommmmvvvviiiieeeewwww////ffffrrrreeeedddd. -nopanels Start up displaying no panels, only graphics windows. Panels may be invoked later as usual with the "Px" key- board shortcuts or "(ui-panel ...)" command. -noinit Read no initialization files. By default, geomview Page 2 (printed 12/22/98) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) GGGGeeeeoooommmmeeeettttrrrryyyy CCCCeeeennnntttteeeerrrr ((((DDDDeeeecccceeeemmmmbbbbeeeerrrr 11110000,,,, 1111999999996666)))) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) reads the system-wide ".geomview" file, followed by those in $HOME/.geomview and ./.geomview. -e _m_o_d_u_l_e_n_a_m_e Start an external module; _m_o_d_u_l_e_n_a_m_e is the name asso- ciated with the module, appearing in the main panel's Applications browser, as defined by the emodule-define command (see geomview(5) for details). -start _m_o_d_u_l_e_n_a_m_e _a_r_g_u_m_e_n_t_s ... -- Like -e but allows you to pass arguments to the exter- nal module. "--" signals the end of the argument list; the "--" may be omitted if it would be the last argu- ment on the geomview command line. -run _s_h_e_l_l-_c_o_m_m_a_n_d _a_r_g_u_m_e_n_t_s ... Like -start but takes the pathname of executable of the external module instead of the module's name. GGGGEEEEOOOOMMMMEEEETTTTRRRRYYYY FFFFIIIILLLLEEEE FFFFOOOORRRRMMMMAAAATTTTSSSS 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. SSSSTTTTAAAARRRRTTTTUUUUPPPP FFFFIIIILLLLEEEESSSS 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 direc- tory, and executes it if found. The startup file of an indi- vidual user overrides the systemwide defaults, since later commands take precedence over earlier ones. EEEEXXXXTTTTEEEERRRRNNNNAAAALLLL MMMMOOOODDDDUUUULLLLEEEESSSS 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 "Ap- plication" 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 additional en- try to the browser, beginning with a number in square brack- ets as in ``[1] Crayola'', which represents the running in- stance of that module. You can terminate the module by clicking on the numbered entry. Modules are documented Page 3 (printed 12/22/98) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) GGGGeeeeoooommmmeeeettttrrrryyyy CCCCeeeennnntttteeeerrrr ((((DDDDeeeecccceeeemmmmbbbbeeeerrrr 11110000,,,, 1111999999996666)))) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) separately from geomview. See the manual page for each module for details. IIIINNNNSSSSTTTTAAAALLLLLLLLIIIINNNNGGGG AAAANNNN EEEEXXXXTTTTEEEERRRRNNNNAAAALLLL MMMMOOOODDDDUUUULLLLEEEE Geomview looks for external modules in a special directory for modules. In the geomview distribution tree this is the "bin/$MACHTYPE" 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 direc- tories; by default only the "bin/$MACHTYPE" 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. EEEEXXXXTTTTEEEERRRRNNNNAAAALLLL MMMMOOOODDDDUUUULLLLEEEE IIIINNNNIIIITTTT FFFFIIIILLLLEEEESSSS An external module init file is the file that tells geomview how to run that module. Its name must be ".geomview-" fol- lowed 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. KKKKEEEEYYYYBBBBOOOOAAAARRRRDDDD SSSSHHHHOOOORRRRTTTTCCCCUUUUTTTTSSSS 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 Page 4 (printed 12/22/98) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) GGGGeeeeoooommmmeeeettttrrrryyyy CCCCeeeennnntttteeeerrrr ((((DDDDeeeecccceeeemmmmbbbbeeeerrrr 11110000,,,, 1111999999996666)))) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) 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 3as Smooth, non-lighted al Shade lines aV Vectors aT allow transparency at Texture-mapping Color: aC allow concave polygons 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 FOV Shift=slow motion, vd Draw other views' cameras f fly in r/t modes. ] #vv field of View o orbit [Left=steer, Middle=speed ] #vn near clip distance s scale #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 #vl focal length L Look At object v~ Software shading 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 ms Euclidean Hyperbolic Spherical Model: mv mp mc Virtual Projective Conformal Other: N normalization < Pf load geom/command file 0N none > Ps save something to file ui motion has inertia 1N each TV NTSC mode toggle uc constrained (X/Y) motion 2N all uo motion in Own coord system Rightmouse-doubleclick pick as current target object Shift-Rightmouse pick interest (center) point 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 Rt choose Display token to specify .tiff file (default) Rf choose Display token to specify framebuffer Rs Simulate background color with Polygon (default) Rx No background simulation - fully transparent (alpha) background NNNNOOOOTTTTEEEESSSS PPPPaaaaggggeeee 5555 ((((pppprrrriiiinnnntttteeeedddd 11112222////22222222////99998888)))) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) GGGGeeeeoooommmmeeeettttrrrryyyy CCCCeeeennnntttteeeerrrr ((((DDDDeeeecccceeeemmmmbbbbeeeerrrr 11110000,,,, 1111999999996666)))) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) 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 pro- gram "gvx" (or "gvx.OGL"). Do not run "gvx" by itself; al- ways invoke geomview with the "geomview" shell script. SSSSEEEEEEEE AAAALLLLSSSSOOOO oogl(5) - OOGL geometric file formats and conventions geomview(5) - geomview command language reference FFFFIIIILLLLEEEESSSS data/.geomview - default initialization file in geomview command language data/geom - sample data files EEEENNNNVVVVIIIIRRRROOOONNNNMMMMEEEENNNNTTTT The ``geomview'' shell script sets these internally by de- fault; if you set them before invoking geomview, the values you set will be used instead of the built-in defaults. GEOMROOT - main directory under which geomview finds its data files, modules, and gvx executable. GEOMVIEW_GVX - geomview executable GEOMVIEW_LOAD_PATH - colon-separated search path for data files GEOMVIEW_EMODULE_PATH - colon-separated search path for external modules GEOMVIEW_SYSTEM_INITFILE - system-wide GCL initialization script GEOMDATA - top directory of the default data tree, used by some modules AAAAUUUUTTTTHHHHOOOORRRRSSSS 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 Daniel Krech Scott Wisdom krech@geom.umn.edu wisdom@geom.umn.edu Daeron Meyer Timothy Rowley daeron@geom.umn.edu trowley@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 Page 6 (printed 12/22/98) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) GGGGeeeeoooommmmeeeettttrrrryyyy CCCCeeeennnntttteeeerrrr ((((DDDDeeeecccceeeemmmmbbbbeeeerrrr 11110000,,,, 1111999999996666)))) GGGGeeeeoooommmmvvvviiiieeeewwww((((1111)))) software@geom.umn.edu BBBBUUUUGGGGSSSS Sometimes core dumps on bad input files. Zoom and scale have no inertia. Virtual 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. Page 7 (printed 12/22/98)