Short: 3D solid modeler (sources,examples) Author: Gershon Elber, Amiga port by Kriton Kyrimis Uploader: kyrimis@cti.gr Type: gfx/3d This archive contains the entire source distribution of version 7.0 of the IRIT 3-D solid modeler, ready for compilation on several platforms, including the Amiga. The IRIT package can create inputs for various 3-D rendering programs, e.g., POVray and rayshade. The archive contains several examples. General Information: The IRIT solid modeling system is a simple environment that allows one to model basic, primitive based, models using Boolean operations as well as freeform surface's based models. The system is designed for simplicity and is geared toward research. As such, no graphical user interface (GUI) exists or is planned in the near future. The modeling is performed using the main module/executable of the system which is called (surprise!) IRIT. A textual interface (or PUI for programmable user interface) is available which provides the interaction interface. An interpreter processes the user's command and executes them. This interpreter includes general mechanisms that are common in high level programming languages such as loops, conditional sentences, and functions. In addition, features that can be found in modern languages such as operator overloading and object oriented design are extensively used. Version 7.0 of the IRIT solid modeling system contains tools that can aid in research and development in the areas of computer aided geometric design and computer graphics. Here is a list of the features that can be found: * Full featured points/vectors/homogeneous matrices algebra by overloading the basic operators +,-,*,/,^. * Polygonal based modeling. Constructors for basic primitives (box, cone, torus, etc.) are provided as well as low level constructors for direct polygonal model's construction. Boolean operations between polygonal models is also supported. * Freeform curve and surface manipulation tools. Supported are polynomial and rational Bezier and piecewise polynomial/rational NURB curves and surfaces. A large set of tools to manipulate freeform curves and surfaces is provided and includes (for both curves and surfaces): + Low level Constructors (direct control points control). + High Level Constructors (Sweep, Extrude, Boolean Sum, etc.). + Merging and Profiling tools. + Evaluation. + Subdivision. + Refinement. + Degree Raising. + Differentiation and Integration. + Symbolic Computation (Difference, Sum, and Product). + Polygonal/Polyline approximation. + Composition. + Offset. + Trimmed surfaces. Tools to compute the zero set of curves, the extreme points, the minimal or maximal distance from a curve to a point or a line, the inflection points and/or points of extreme curvature, and the intersection points of two curves are also available. The symbolic tools provided allow one to represent scalar and vector fields of differential properties of the curves and surfaces such as normals and curvature. The curve's inflection and extreme curvature detection tools, mentioned above, exploits these symbolic tool and are therefore robust. * Trivariate Bspline and bezier support that includes evaluation, iso surface extraction, subdivision, differentiation etc. In addition to the main module of IRIT, several other tools are provided: + poly3d-h: A hidden line removal tool. + illustrt: A line drawing illustration tool. + xgldrvs/xglmdrvs/xmtdrvs/x11drvs/wntdrvs/os2drvs/amidrvs: Display devices (and viewing programs at the same time) for SGI's gl, gl/Motif, X11, X11/Motif, Window NT, OS2 2.x, and AMIGA. All these drivers supports the display of animation using animation curves. + irit2ps/irit2dxf/irit2iv/irit2nff/irit2plg/irit2ray/irit2scn/irit2xfg: Filters to convert data files created by IRIT to PostScript, DXF, SGI Inventor, NFF, REND386, Rayshade, SCN, and Xfig format. + dat2irit/dxf2irit: Filters to convert from data file of IRIT to IRIT's solid modeling scripts and from DXF to IRIT. The IRIT solid modeller is actively used in various research areas: + Adaptive Isocurve Algorithm. A coverage based on adaptive extraction of isocurves can be used for various purposes from toolpath for machining purposes to image rendering. This algorithm, that is exploiting symbolic computation, is implemented using the IRIT solid modeller and a tool named xgladap make use of the hardware of the SGI systems to provide real time rendering using adaptive isocurves. + Layout. A new fabrication scheme automatically computes an approximated layout of a free form surface, on the plane, so it can be cut from planar sheets (such as paper or fabric) and stitched together to form an approximation of the original surface. Tools to automatically compute the layout were implemented using IRIT. + Morphing. Using refinement and degree raising, two tools that are available in this system, different surfaces can be brought to a common function space and be continuously morphed or transformed from one to the other. Again, a successful implementation exists in IRIT. + Illustrt. Line drawings is a neglected area of computer graphics. Illustrt is a tool developed with the aid of IRIT, and now is part of IRIT, to automatically generate line drawings with special effects such as width/size and intensity depth cueing, Z sorting, and end of edge clipping etc. The system is written in C and is running on virtually all Unix environments, including but not limited to SUN's SPARC, SGI's SGI4D, HP3xx/4xx/7xx, DEC 5000, IBM RS6000, E&S ESV, and i386 SVR4, using either X11 or, when available, SGI's GL. In addition, other environments such as Window NT and OS2 using IBM PC 386 and above or 68xxx AMIGA are also supported. ============================= Archive contents ============================= Original Packed Ratio Date Time Name -------- ------- ----- --------- -------- ------------- 16130 6150 61.8% 28-Feb-97 11:20:14 +e_j1.c 497 267 46.2% 28-Feb-97 11:20:14 +getenv.c 277 193 30.3% 07-Apr-97 11:50:12 +makefile.ami 266 188 29.3% 28-Feb-97 11:15:28 +makefile.sas 206 112 45.6% 28-Feb-97 11:21:38 +math.h 7360 1843 74.9% 07-Apr-97 11:50:12 +math_private.h 2938 1037 64.7% 28-Feb-97 11:20:16 +popen.c 146 120 17.8% 28-Feb-97 11:21:38 +popen.h 229 160 30.1% 28-Feb-97 11:20:16 +putenv.c 2186 884 59.5% 28-Feb-97 11:20:16 +usleep.c 57 57 0.0% 28-Feb-97 11:15:10 +backup 128 83 35.1% 26-Mar-97 20:17:42 +backup.cmd 1091 409 62.5% 20-May-96 17:16:08 +difftree 34623 2530 92.6% 18-Sep-96 14:18:12 +iritfont.dat 790 399 49.4% 30-Dec-93 07:10:18 +mksymlin 614 382 37.7% 26-Mar-97 18:18:00 +nt_mkdef.cmd 27988 5830 79.1% 28-Feb-97 11:20:16 +adjacncy.c 21127 4669 77.9% 28-Feb-97 11:20:16 +bool-2d.c 42412 6652 84.3% 28-Feb-97 11:20:16 +bool-hi.c 58485 12547 78.5% 16-Apr-97 09:27:06 +bool1low.c 48977 12810 73.8% 14-Mar-97 13:27:18 +bool2low.c 5700 1970 65.4% 28-Feb-97 11:21:38 +bool_loc.h 2143 465 78.3% 25-Feb-95 12:26:18 +makefile.ami 972 366 62.3% 13-Oct-94 15:45:16 +makefile.djg 2419 498 79.4% 17-Mar-97 19:01:44 +makefile.os2 2121 455 78.5% 26-Feb-95 14:28:54 +makefile.sas 1228 475 61.3% 18-Dec-94 23:35:16 +makefile.tc 2516 517 79.4% 17-Mar-97 19:01:44 +makefile.unx 1011 368 63.6% 18-Dec-94 23:35:18 +makefile.wnt 13368 2974 77.7% 28-Feb-97 11:20:18 +afd_cube.c 28388 5964 78.9% 28-Feb-97 11:20:18 +bsp2poly.c 16529 1981 88.0% 28-Feb-97 11:20:18 +bsp_gen.c 71876 9658 86.5% 28-Feb-97 11:20:18 +bsp_knot.c 9282 2402 74.1% 28-Feb-97 11:20:20 +bspboehm.c 10486 2832 72.9% 28-Feb-97 11:20:20 +bspcoxdb.c 18258 4153 77.2% 26-Mar-97 10:44:54 +bzr2poly.c 3817 678 82.2% 28-Feb-97 11:20:20 +bzr_gen.c 54611 4553 91.6% 28-Feb-97 11:20:22 +cagd1gen.c 69102 6598 90.4% 13-Apr-97 13:26:12 +cagd2gen.c 15912 2815 82.3% 28-Feb-97 11:20:22 +cagd_arc.c 67240 8847 86.8% 26-Mar-97 10:27:54 +cagd_aux.c 12429 2790 77.5% 28-Feb-97 11:20:22 +cagd_cci.c 2360 623 73.6% 28-Feb-97 11:20:22 +cagd_dbg.c 6091 1884 69.0% 28-Feb-97 11:20:24 +cagd_err.c 1915 480 74.9% 28-Feb-97 11:20:24 +cagd_ftl.c 1691 606 64.1% 28-Feb-97 11:21:38 +cagd_loc.h 17770 2511 85.8% 28-Feb-97 11:20:24 +cagdbbox.c 8491 2096 75.3% 28-Feb-97 11:20:24 +cagdbsum.c 13126 2204 83.2% 28-Feb-97 11:20:24 +cagdcmpt.c 18611 3356 81.9% 13-Apr-97 09:59:26 +cagdcmrg.c 20175 2506 87.5% 02-Mar-97 13:49:36 +cagdcoer.c 4352 1425 67.2% 28-Feb-97 11:20:24 +cagdcsrf.c 5360 1114 79.2% 28-Feb-97 11:20:24 +cagdedit.c 4141 1299 68.6% 28-Feb-97 11:20:26 +cagdextr.c 4097 807 80.3% 28-Feb-97 11:20:26 +cagdmesh.c 13929 2792 79.9% 28-Feb-97 11:20:26 +cagdoslo.c 11868 1574 86.7% 28-Feb-97 11:20:26 +cagdprim.c 7614 1939 74.5% 28-Feb-97 11:20:26 +cagdruld.c 13478 2780 79.3% 28-Feb-97 11:20:26 +cagdsmrg.c 8115 1925 76.2% 28-Feb-97 11:20:26 +cagdsrev.c 22830 5940 73.9% 28-Mar-97 11:22:12 +cagdswep.c 35592 6577 81.5% 28-Mar-97 10:20:40 +cbsp_aux.c 18896 4598 75.6% 28-Feb-97 11:20:28 +cbsp_int.c 9199 2401 73.8% 28-Feb-97 11:20:28 +cbspeval.c 25823 4477 82.6% 26-Mar-97 10:41:50 +cbzr_aux.c 9527 1683 82.3% 28-Feb-97 11:20:28 +cbzr_pwr.c 18604 3446 81.4% 28-Feb-97 11:20:28 +cbzreval.c 41203 7588 81.5% 28-Feb-97 11:20:28 +crvmatch.c 5333 1227 76.9% 28-Feb-97 11:20:30 +hermite.c 11302 1164 89.7% 06-Dec-96 09:58:18 +makefile.ami 2222 674 69.6% 06-Dec-96 09:58:36 +makefile.djg 14688 1288 91.2% 17-Mar-97 19:01:28 +makefile.os2 11280 1151 89.7% 06-Dec-96 09:58:58 +makefile.sas 2949 876 70.2% 06-Dec-96 09:59:20 +makefile.tc 14781 1309 91.1% 17-Mar-97 19:01:26 +makefile.unx 2129 644 69.7% 06-Dec-96 09:59:38 +makefile.wnt 15486 3058 80.2% 28-Feb-97 11:20:30 +mshplanr.c 8878 1776 79.9% 28-Feb-97 11:20:30 +poly_err.c 49061 8934 81.7% 26-Mar-97 10:36:04 +sbsp_aux.c 16619 3967 76.1% 28-Feb-97 11:20:30 +sbsp_int.c 15514 2836 81.7% 28-Feb-97 11:20:30 +sbspeval.c 22806 3976 82.5% 26-Mar-97 10:38:44 +sbzr_aux.c 8963 1763 80.3% 28-Feb-97 11:20:30 +sbzreval.c 1237 438 64.5% 28-Feb-97 11:20:32 +circlink.c 472 241 48.9% 25-Feb-95 12:29:02 +makefile.ami 309 218 29.4% 13-Oct-94 15:45:56 +makefile.djg 572 273 52.2% 17-Mar-97 19:01:46 +makefile.os2 472 241 48.9% 26-Feb-95 14:31:08 +makefile.sas 663 424 36.0% 18-Dec-94 23:35:18 +makefile.tc 549 256 53.3% 17-Mar-97 19:01:44 +makefile.unx 335 222 33.7% 18-Dec-94 23:35:20 +makefile.wnt 45587 15372 66.2% 14-Feb-97 16:33:56 +3dhead.32 209 161 22.9% 14-Feb-97 17:02:26 +3dhead.inf 57088 8724 84.7% 14-Feb-97 15:57:02 +sphere16.dat 7307 944 87.0% 14-Feb-97 15:55:40 +sphere8.dat 2118 1116 47.3% 30-Dec-93 07:10:18 +disclaim 537 148 72.4% 12-Feb-95 07:57:48 +conv_c_to_tex 2543 1108 56.4% 12-Feb-95 07:26:22 +lst_sqrs.c 3289 1153 64.9% 17-Apr-97 17:53:32 +lst_sqrs.tex 527 226 57.1% 12-Feb-95 07:02:36 +makefile.unx 852 450 47.1% 03-Feb-95 05:05:02 +polyarea.c 1045 469 55.1% 17-Apr-97 17:53:30 +polyarea.tex 1004 509 49.3% 03-Feb-95 04:38:04 +polygons.c 1225 531 56.6% 17-Apr-97 17:53:30 +polygons.tex 2379 866 63.5% 03-Feb-95 05:06:50 +transfrm.c 2761 898 67.4% 17-Apr-97 17:53:32 +transfrm.tex 10140 4125 59.3% 18-Mar-97 09:56:50 +coding.std 633 389 38.5% 07-Apr-97 11:50:16 +contrib.ack 747 373 50.0% 10-Sep-95 23:35:20 +contrib.rul 5506 2493 54.7% 29-Nov-95 01:17:16 +general.inf 1652 886 46.3% 17-Apr-97 11:01:10 +irit.get 404355 114774 71.6% 09-Apr-97 16:46:22 +irit.src 6571 2840 56.7% 07-Apr-97 11:57:06 +iritbeta.lst 27584 5722 79.2% 11-Mar-97 11:32:08 +irithlp.c 3852 926 75.9% 20-Jan-96 22:57:52 +makefile.ami 534 268 49.8% 30-Dec-93 05:10:00 +makefile.djg 610 296 51.4% 17-Mar-97 19:02:04 +makefile.os2 3942 965 75.5% 21-Jan-96 14:25:38 +makefile.sas 808 434 46.2% 18-Dec-94 23:36:10 +makefile.tc 4136 999 75.8% 17-Mar-97 19:52:00 +makefile.unx 808 410 49.2% 18-Dec-94 23:36:12 +makefile.wnt 17813 6638 62.7% 18-Mar-97 10:15:48 +papers 21621 6057 71.9% 17-Mar-97 18:42:24 +prog_man.html 30563 9086 70.2% 17-Mar-97 18:42:12 +prog_man.tex 3118 1208 61.2% 11-Sep-94 17:52:28 +template.c 48230 8187 83.0% 28-Feb-97 11:20:32 +progman.c 7239 3137 56.6% 29-Nov-95 01:12:20 +technion.inf 18658 7697 58.7% 07-Apr-97 15:26:32 +update.new 78345 13287 83.0% 11-Mar-97 11:30:14 +doc_figs.irt 7237 1742 75.9% 20-Jan-96 23:14:32 +makefile.ami 8529 2143 74.8% 17-Mar-97 19:34:02 +makefile.unx 16980 4403 74.0% 09-Feb-97 18:26:08 +irit.el 5337 1310 75.4% 17-Mar-97 20:05:46 +dat2bin.c 27899 4739 83.0% 17-Mar-97 20:09:26 +dat2irit.c 43784 7982 81.7% 17-Mar-97 20:06:52 +dxf2irit.c 45948 6113 86.6% 13-Apr-97 09:26:32 +ffcnvrt.c 3916 1120 71.3% 09-Apr-97 10:50:14 +ffcnvrt.h 22309 4784 78.5% 17-Mar-97 20:05:30 +irit2dxf.c 15600 3520 77.4% 09-Apr-97 10:46:10 +irit2hgl.c 17835 3279 81.6% 09-Apr-97 10:46:28 +irit2iv.c 23018 5329 76.8% 17-Mar-97 20:05:06 +irit2nff.c 14928 3329 77.6% 17-Mar-97 20:04:58 +irit2plg.c 37724 8203 78.2% 09-Apr-97 10:45:52 +irit2pov.c 43806 9421 78.4% 09-Apr-97 10:45:32 +irit2ps.c 33454 7310 78.1% 09-Apr-97 10:45:08 +irit2ray.c 21792 4992 77.0% 17-Mar-97 20:04:24 +irit2scn.c 15221 3396 77.6% 09-Apr-97 10:44:32 +irit2xfg.c 7037 1042 85.1% 09-Dec-96 10:29:28 +makefile.ami 6112 1113 81.7% 09-Dec-96 10:31:56 +makefile.djg 8447 1088 87.1% 17-Mar-97 19:02:04 +makefile.os2 7622 1103 85.5% 09-Dec-96 10:28:48 +makefile.sas 6257 1131 81.9% 09-Dec-96 10:31:16 +makefile.tc 9554 1213 87.3% 17-Mar-97 19:02:02 +makefile.unx 5318 896 83.1% 09-Dec-96 10:30:14 +makefile.wnt 26971 5371 80.0% 28-Mar-97 11:45:40 +obj2irit.c 11685 2674 77.1% 28-Feb-97 11:20:36 +skeletn1.c 989 332 66.4% 13-Apr-97 11:32:44 +test-os2.cmd 1024 358 65.0% 13-Apr-97 11:34:08 +test-unx 989 335 66.1% 13-Apr-97 11:32:52 +test-wnt.cmd 7342 1714 76.6% 27-Mar-97 11:08:22 +test.dat 754 299 60.3% 28-Feb-97 11:20:38 +anim_aux.c 23278 4894 78.9% 28-Feb-97 11:20:38 +animate.c 12842 2077 83.8% 28-Feb-97 11:20:38 +bbox.c 25669 6122 76.1% 28-Feb-97 13:43:16 +convex.c 35410 7041 80.1% 28-Feb-97 11:20:38 +decimate.c 65608 9911 84.8% 15-Apr-97 10:31:00 +geomat3d.c 14866 3394 77.1% 28-Feb-97 18:06:38 +geomvals.c 10914 2144 80.3% 28-Feb-97 11:20:40 +intrnrml.c 11123 2502 77.5% 28-Feb-97 11:20:40 +ln_sweep.c 2773 583 78.9% 28-Feb-97 14:17:46 +makefile.ami 1402 458 67.3% 28-Feb-97 14:18:04 +makefile.djg 5358 802 85.0% 17-Mar-97 19:01:42 +makefile.os2 2751 571 79.2% 28-Feb-97 14:18:20 +makefile.sas 2062 770 62.6% 28-Feb-97 14:18:38 +makefile.tc 5430 801 85.2% 17-Mar-97 19:01:42 +makefile.unx 1464 476 67.4% 28-Feb-97 14:18:52 +makefile.wnt 4585 1026 77.6% 28-Feb-97 11:20:40 +poly_cln.c 7122 1942 72.7% 05-Apr-97 19:29:50 +poly_pts.c 6648 1506 77.3% 28-Feb-97 11:20:40 +polyofst.c 75741 13281 82.4% 28-Feb-97 11:20:40 +primitiv.c 2812 888 68.4% 28-Feb-97 11:20:40 +sph_pts.c 40154 7850 80.4% 07-Apr-97 11:50:14 +amidrvs.c 2826 1259 55.4% 24-Dec-95 11:56:28 +amidrvs.cfg 60091 8193 86.3% 29-Mar-97 22:20:08 +anim_wnt.c 64307 8211 87.2% 28-Feb-97 11:20:42 +anim_xmt.c 2444 709 70.9% 28-Feb-97 11:20:42 +djgdrvs.c 43400 7899 81.7% 28-Feb-97 11:20:42 +djggraph.c 958 370 61.3% 28-Feb-97 11:21:40 +djggraph.h 3565 986 72.3% 28-Feb-97 11:20:42 +draw_crv.c 5713 1389 75.6% 28-Feb-97 11:20:42 +draw_mdl.c 2923 835 71.4% 28-Feb-97 11:20:42 +draw_obj.c 5561 1316 76.3% 28-Feb-97 11:20:44 +draw_srf.c 4436 827 81.3% 28-Feb-97 11:20:44 +drawln3d.c 4291 1188 72.3% 28-Feb-97 11:20:44 +drawpoly.c 2252 611 72.8% 28-Feb-97 11:20:44 +drawptvc.c 5400 1277 76.3% 28-Feb-97 11:20:44 +drawtris.c 4941 1258 74.5% 28-Feb-97 11:20:44 +drawtriv.c 5632 1374 75.6% 28-Feb-97 11:20:44 +drawtsrf.c 49262 11179 77.3% 13-Apr-97 20:45:48 +gen_grap.c 32927 6670 79.7% 28-Feb-97 11:20:46 +hpsbutil.c 8985 1064 88.1% 30-Jan-97 16:31:40 +makefile.ami 4661 712 84.7% 30-Jan-97 16:31:50 +makefile.djg 12994 1469 88.6% 17-Mar-97 19:01:50 +makefile.os2 9068 1104 87.8% 30-Jan-97 16:32:00 +makefile.sas 14387 1570 89.0% 17-Mar-97 19:01:48 +makefile.unx 5018 751 85.0% 28-Feb-97 18:11:34 +makefile.wnt 7792 1194 84.6% 28-Feb-97 11:20:46 +nuldrvs.c 56051 10933 80.4% 27-Mar-97 20:42:54 +os2drvs.c 3392 1563 53.9% 23-May-96 10:26:50 +os2drvs.cfg 2301 760 66.9% 28-Feb-97 11:21:40 +os2drvs.h 3995 1375 65.5% 11-Jan-96 23:52:02 +os2drvs.rc 126 65 48.4% 10-Jan-96 11:58:58 +forward.bmp 126 57 54.7% 10-Jan-96 11:58:58 +play.bmp 126 62 50.7% 10-Jan-96 11:59:00 +playback.bmp 126 69 45.2% 10-Jan-96 11:59:00 +rewind.bmp 126 43 65.8% 10-Jan-96 11:59:00 +stop.bmp 766 209 72.7% 10-Jan-96 11:59:00 +wntdrvs.ico 26193 6233 76.2% 31-Mar-97 19:49:36 +wnt_ogl.c 15233 2213 85.4% 27-Mar-97 18:54:36 +wnt_win.c 44395 9293 79.0% 29-Mar-97 21:57:56 +wntdrvs.c 3631 1659 54.3% 23-May-96 10:26:58 +wntdrvs.cfg 4827 1541 68.0% 28-Feb-97 11:21:40 +wntdrvs.h 3821 1317 65.5% 25-May-96 10:52:00 +wntdrvs.rc 16792 2874 82.8% 28-Mar-97 11:42:40 +x11draw.c 42759 8039 81.1% 28-Mar-97 14:01:14 +x11drvs.c 3599 1641 54.4% 23-May-96 10:27:12 +x11drvs.cfg 1306 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