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00015 #include "mem.h"
00016 #include "qset.h"
00017 #include "libqhull.h"
00018
00019 #include <ctype.h>
00020 #include <math.h>
00021 #include <string.h>
00022 #include <stdio.h>
00023 #include <stdlib.h>
00024
00025 #if __MWERKS__ && __POWERPC__
00026 #include <SIOUX.h>
00027 #include <Files.h>
00028 #include <console.h>
00029 #include <Desk.h>
00030
00031 #elif __cplusplus
00032 extern "C" {
00033 int isatty(int);
00034 }
00035
00036 #elif _MSC_VER
00037 #include <io.h>
00038 #define isatty _isatty
00039 int _isatty(int);
00040
00041 #else
00042 int isatty(int);
00043
00044 #endif
00045
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00055 char qh_prompta[]= "\n\
00056 qhull- compute convex hulls and related structures.\n\
00057 http://www.qhull.org %s\n\
00058 \n\
00059 input (stdin):\n\
00060 first lines: dimension and number of points (or vice-versa).\n\
00061 other lines: point coordinates, best if one point per line\n\
00062 comments: start with a non-numeric character\n\
00063 halfspaces: use dim plus one and put offset after coefficients.\n\
00064 May be preceeded by a single interior point ('H').\n\
00065 \n\
00066 options:\n\
00067 d - Delaunay triangulation by lifting points to a paraboloid\n\
00068 d Qu - furthest-site Delaunay triangulation (upper convex hull)\n\
00069 v - Voronoi diagram (dual of the Delaunay triangulation)\n\
00070 v Qu - furthest-site Voronoi diagram\n\
00071 Hn,n,... - halfspace intersection about point [n,n,0,...]\n\
00072 Qt - triangulated output\n\
00073 QJ - joggled input instead of merged facets\n\
00074 Qc - keep coplanar points with nearest facet\n\
00075 Qi - keep interior points with nearest facet\n\
00076 \n\
00077 Qhull control options:\n\
00078 Qbk:n - scale coord k so that low bound is n\n\
00079 QBk:n - scale coord k so that upper bound is n (QBk is %2.2g)\n\
00080 QbB - scale input to unit cube centered at the origin\n\
00081 Qbb - scale last coordinate to [0,m] for Delaunay triangulations\n\
00082 Qbk:0Bk:0 - remove k-th coordinate from input\n\
00083 QJn - randomly joggle input in range [-n,n]\n\
00084 QRn - random rotation (n=seed, n=0 time, n=-1 time/no rotate)\n\
00085 %s%s%s%s";
00086 char qh_promptb[]= "\
00087 Qf - partition point to furthest outside facet\n\
00088 Qg - only build good facets (needs 'QGn', 'QVn', or 'PdD')\n\
00089 Qm - only process points that would increase max_outside\n\
00090 Qr - process random outside points instead of furthest ones\n\
00091 Qs - search all points for the initial simplex\n\
00092 Qu - for 'd' or 'v', compute upper hull without point at-infinity\n\
00093 returns furthest-site Delaunay triangulation\n\
00094 Qv - test vertex neighbors for convexity\n\
00095 Qx - exact pre-merges (skips coplanar and angle-coplanar facets)\n\
00096 Qz - add point-at-infinity to Delaunay triangulation\n\
00097 QGn - good facet if visible from point n, -n for not visible\n\
00098 QVn - good facet if it includes point n, -n if not\n\
00099 Q0 - turn off default premerge with 'C-0'/'Qx'\n\
00100 Q1 - sort merges by type instead of angle\n\
00101 Q2 - merge all non-convex at once instead of independent sets\n\
00102 Q3 - do not merge redundant vertices\n\
00103 Q4 - avoid old->new merges\n\
00104 Q5 - do not correct outer planes at end of qhull\n\
00105 Q6 - do not pre-merge concave or coplanar facets\n\
00106 Q7 - depth-first processing instead of breadth-first\n\
00107 Q8 - do not process near-inside points\n\
00108 Q9 - process furthest of furthest points\n\
00109 Q10 - no special processing for narrow distributions\n\
00110 Q11 - copy normals and recompute centrums for tricoplanar facets\n\
00111 \n\
00112 ";
00113 char qh_promptc[]= "\
00114 Topts- Trace options:\n\
00115 T4 - trace at level n, 4=all, 5=mem/gauss, -1= events\n\
00116 Ta - annotate output with message codes\n\
00117 Tc - check frequently during execution\n\
00118 Ts - print statistics\n\
00119 Tv - verify result: structure, convexity, and point inclusion\n\
00120 Tz - send all output to stdout\n\
00121 TFn - report summary when n or more facets created\n\
00122 TI file - input data from file, no spaces or single quotes\n\
00123 TO file - output results to file, may be enclosed in single quotes\n\
00124 TPn - turn on tracing when point n added to hull\n\
00125 TMn - turn on tracing at merge n\n\
00126 TWn - trace merge facets when width > n\n\
00127 TRn - rerun qhull n times. Use with 'QJn'\n\
00128 TVn - stop qhull after adding point n, -n for before (see TCn)\n\
00129 TCn - stop qhull after building cone for point n (see TVn)\n\
00130 \n\
00131 Precision options:\n\
00132 Cn - radius of centrum (roundoff added). Merge facets if non-convex\n\
00133 An - cosine of maximum angle. Merge facets if cosine > n or non-convex\n\
00134 C-0 roundoff, A-0.99/C-0.01 pre-merge, A0.99/C0.01 post-merge\n\
00135 En - max roundoff error for distance computation\n\
00136 Rn - randomly perturb computations by a factor of [1-n,1+n]\n\
00137 Vn - min distance above plane for a visible facet (default 3C-n or En)\n\
00138 Un - max distance below plane for a new, coplanar point (default Vn)\n\
00139 Wn - min facet width for outside point (before roundoff, default 2Vn)\n\
00140 \n\
00141 Output formats (may be combined; if none, produces a summary to stdout):\n\
00142 f - facet dump\n\
00143 G - Geomview output (see below)\n\
00144 i - vertices incident to each facet\n\
00145 m - Mathematica output (2-d and 3-d)\n\
00146 o - OFF format (dim, points and facets; Voronoi regions)\n\
00147 n - normals with offsets\n\
00148 p - vertex coordinates or Voronoi vertices (coplanar points if 'Qc')\n\
00149 s - summary (stderr)\n\
00150 \n\
00151 ";
00152 char qh_promptd[]= "\
00153 More formats:\n\
00154 Fa - area for each facet\n\
00155 FA - compute total area and volume for option 's'\n\
00156 Fc - count plus coplanar points for each facet\n\
00157 use 'Qc' (default) for coplanar and 'Qi' for interior\n\
00158 FC - centrum or Voronoi center for each facet\n\
00159 Fd - use cdd format for input (homogeneous with offset first)\n\
00160 FD - use cdd format for numeric output (offset first)\n\
00161 FF - facet dump without ridges\n\
00162 Fi - inner plane for each facet\n\
00163 for 'v', separating hyperplanes for bounded Voronoi regions\n\
00164 FI - ID of each facet\n\
00165 Fm - merge count for each facet (511 max)\n\
00166 FM - Maple output (2-d and 3-d)\n\
00167 Fn - count plus neighboring facets for each facet\n\
00168 FN - count plus neighboring facets for each point\n\
00169 Fo - outer plane (or max_outside) for each facet\n\
00170 for 'v', separating hyperplanes for unbounded Voronoi regions\n\
00171 FO - options and precision constants\n\
00172 Fp - dim, count, and intersection coordinates (halfspace only)\n\
00173 FP - nearest vertex and distance for each coplanar point\n\
00174 FQ - command used for qhull\n\
00175 Fs - summary: #int (8), dimension, #points, tot vertices, tot facets,\n\
00176 output: #vertices, #facets, #coplanars, #nonsimplicial\n\
00177 #real (2), max outer plane, min vertex\n\
00178 FS - sizes: #int (0)\n\
00179 #real (2) tot area, tot volume\n\
00180 Ft - triangulation with centrums for non-simplicial facets (OFF format)\n\
00181 Fv - count plus vertices for each facet\n\
00182 for 'v', Voronoi diagram as Voronoi vertices for pairs of sites\n\
00183 FV - average of vertices (a feasible point for 'H')\n\
00184 Fx - extreme points (in order for 2-d)\n\
00185 \n\
00186 ";
00187 char qh_prompte[]= "\
00188 Geomview options (2-d, 3-d, and 4-d; 2-d Voronoi)\n\
00189 Ga - all points as dots\n\
00190 Gp - coplanar points and vertices as radii\n\
00191 Gv - vertices as spheres\n\
00192 Gi - inner planes only\n\
00193 Gn - no planes\n\
00194 Go - outer planes only\n\
00195 Gc - centrums\n\
00196 Gh - hyperplane intersections\n\
00197 Gr - ridges\n\
00198 GDn - drop dimension n in 3-d and 4-d output\n\
00199 Gt - for 3-d 'd', transparent outer ridges\n\
00200 \n\
00201 Print options:\n\
00202 PAn - keep n largest facets by area\n\
00203 Pdk:n - drop facet if normal[k] <= n (default 0.0)\n\
00204 PDk:n - drop facet if normal[k] >= n\n\
00205 Pg - print good facets (needs 'QGn' or 'QVn')\n\
00206 PFn - keep facets whose area is at least n\n\
00207 PG - print neighbors of good facets\n\
00208 PMn - keep n facets with most merges\n\
00209 Po - force output. If error, output neighborhood of facet\n\
00210 Pp - do not report precision problems\n\
00211 \n\
00212 . - list of all options\n\
00213 - - one line descriptions of all options\n\
00214 ";
00215
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00218
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00221
00222
00223 char qh_prompt2[]= "\n\
00224 qhull- compute convex hulls and related structures. Qhull %s\n\
00225 input (stdin): dimension, n, point coordinates\n\
00226 comments start with a non-numeric character\n\
00227 halfspace: use dim+1 and put offsets after coefficients\n\
00228 \n\
00229 options (qh-quick.htm):\n\
00230 d - Delaunay triangulation by lifting points to a paraboloid\n\
00231 d Qu - furthest-site Delaunay triangulation (upper convex hull)\n\
00232 v - Voronoi diagram as the dual of the Delaunay triangulation\n\
00233 v Qu - furthest-site Voronoi diagram\n\
00234 H1,1 - Halfspace intersection about [1,1,0,...] via polar duality\n\
00235 Qt - triangulated output\n\
00236 QJ - joggled input instead of merged facets\n\
00237 Tv - verify result: structure, convexity, and point inclusion\n\
00238 . - concise list of all options\n\
00239 - - one-line description of each option\n\
00240 \n\
00241 Output options (subset):\n\
00242 s - summary of results (default)\n\
00243 i - vertices incident to each facet\n\
00244 n - normals with offsets\n\
00245 p - vertex coordinates (if 'Qc', includes coplanar points)\n\
00246 if 'v', Voronoi vertices\n\
00247 Fp - halfspace intersections\n\
00248 Fx - extreme points (convex hull vertices)\n\
00249 FA - compute total area and volume\n\
00250 o - OFF format (if 'v', outputs Voronoi regions)\n\
00251 G - Geomview output (2-d, 3-d and 4-d)\n\
00252 m - Mathematica output (2-d and 3-d)\n\
00253 QVn - print facets that include point n, -n if not\n\
00254 TO file- output results to file, may be enclosed in single quotes\n\
00255 \n\
00256 examples:\n\
00257 rbox c d D2 | qhull Qc s f Fx | more rbox 1000 s | qhull Tv s FA\n\
00258 rbox 10 D2 | qhull d QJ s i TO result rbox 10 D2 | qhull v Qbb Qt p\n\
00259 rbox 10 D2 | qhull d Qu QJ m rbox 10 D2 | qhull v Qu QJ o\n\
00260 rbox c | qhull n rbox c | qhull FV n | qhull H Fp\n\
00261 rbox d D12 | qhull QR0 FA rbox c D7 | qhull FA TF1000\n\
00262 rbox y 1000 W0 | qhull rbox 10 | qhull v QJ o Fv\n\
00263 \n\
00264 ";
00265
00266
00267
00268
00269
00270
00271
00272
00273 char qh_prompt3[]= "\n\
00274 Qhull %s.\n\
00275 Except for 'F.' and 'PG', upper-case options take an argument.\n\
00276 \n\
00277 delaunay voronoi Geomview Halfspace facet_dump\n\
00278 incidences mathematica normals OFF_format points\n\
00279 summary\n\
00280 \n\
00281 Farea FArea-total Fcoplanars FCentrums Fd-cdd-in\n\
00282 FD-cdd-out FF-dump-xridge Finner FIDs Fmerges\n\
00283 Fneighbors FNeigh-vertex Fouter FOptions Fpoint-intersect\n\
00284 FPoint_near FQhull Fsummary FSize Ftriangles\n\
00285 Fvertices Fvoronoi FVertex-ave Fxtremes FMaple\n\
00286 \n\
00287 Gvertices Gpoints Gall_points Gno_planes Ginner\n\
00288 Gcentrums Ghyperplanes Gridges Gouter GDrop_dim\n\
00289 Gtransparent\n\
00290 \n\
00291 PArea-keep Pdrop d0:0D0 Pgood PFacet_area_keep\n\
00292 PGood_neighbors PMerge-keep Poutput_forced Pprecision_not\n\
00293 \n\
00294 QbBound 0:0.5 Qbk:0Bk:0_drop QbB-scale-box Qbb-scale-last Qcoplanar\n\
00295 Qfurthest Qgood_only QGood_point Qinterior Qmax_out\n\
00296 QJoggle Qrandom QRotate Qsearch_1st Qtriangulate\n\
00297 QupperDelaunay QVertex_good Qvneighbors Qxact_merge Qzinfinite\n\
00298 \n\
00299 Q0_no_premerge Q1_no_angle Q2_no_independ Q3_no_redundant Q4_no_old\n\
00300 Q5_no_check_out Q6_no_concave Q7_depth_first Q8_no_near_in Q9_pick_furthest\n\
00301 Q10_no_narrow Q11_trinormals\n\
00302 \n\
00303 T4_trace Tannotate Tcheck_often Tstatistics Tverify\n\
00304 Tz_stdout TFacet_log TInput_file TPoint_trace TMerge_trace\n\
00305 TOutput_file TRerun TWide_trace TVertex_stop TCone_stop\n\
00306 \n\
00307 Angle_max Centrum_size Error_round Random_dist Visible_min\n\
00308 Ucoplanar_max Wide_outside\n\
00309 ";
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00325
00326 int main(int argc, char *argv[]) {
00327 int curlong, totlong;
00328 int exitcode, numpoints, dim;
00329 coordT *points;
00330 boolT ismalloc;
00331
00332 #if __MWERKS__ && __POWERPC__
00333 char inBuf[BUFSIZ], outBuf[BUFSIZ], errBuf[BUFSIZ];
00334 SIOUXSettings.showstatusline= false;
00335 SIOUXSettings.tabspaces= 1;
00336 SIOUXSettings.rows= 40;
00337 if (setvbuf(stdin, inBuf, _IOFBF, sizeof(inBuf)) < 0
00338 || setvbuf(stdout, outBuf, _IOFBF, sizeof(outBuf)) < 0
00339 || (stdout != stderr && setvbuf(stderr, errBuf, _IOFBF, sizeof(errBuf)) < 0))
00340 fprintf(stderr, "qhull internal warning (main): could not change stdio to fully buffered.\n");
00341 argc= ccommand(&argv);
00342 #endif
00343
00344 if ((argc == 1) && isatty( 0 )) {
00345 fprintf(stdout, qh_prompt2, qh_version);
00346 exit(qh_ERRnone);
00347 }
00348 if (argc > 1 && *argv[1] == '-' && !*(argv[1]+1)) {
00349 fprintf(stdout, qh_prompta, qh_version, qh_DEFAULTbox,
00350 qh_promptb, qh_promptc, qh_promptd, qh_prompte);
00351 exit(qh_ERRnone);
00352 }
00353 if (argc >1 && *argv[1] == '.' && !*(argv[1]+1)) {
00354 fprintf(stdout, qh_prompt3, qh_version);
00355 exit(qh_ERRnone);
00356 }
00357 qh_init_A(stdin, stdout, stderr, argc, argv);
00358 exitcode= setjmp(qh errexit);
00359 if (!exitcode) {
00360 qh_initflags(qh qhull_command);
00361 points= qh_readpoints(&numpoints, &dim, &ismalloc);
00362 qh_init_B(points, numpoints, dim, ismalloc);
00363 qh_qhull();
00364 qh_check_output();
00365 qh_produce_output();
00366 if (qh VERIFYoutput && !qh FORCEoutput && !qh STOPpoint && !qh STOPcone)
00367 qh_check_points();
00368 exitcode= qh_ERRnone;
00369 }
00370 qh NOerrexit= True;
00371 #ifdef qh_NOmem
00372 qh_freeqhull( True);
00373 #else
00374 qh_freeqhull( False);
00375 qh_memfreeshort(&curlong, &totlong);
00376 if (curlong || totlong)
00377 fprintf(stderr, "qhull internal warning (main): did not free %d bytes of long memory(%d pieces)\n",
00378 totlong, curlong);
00379 #endif
00380 return exitcode;
00381 }
00382
