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Diffstat (limited to 'extern/qhull/src/qhalf.c')
| -rw-r--r-- | extern/qhull/src/qhalf.c | 324 |
1 files changed, 0 insertions, 324 deletions
diff --git a/extern/qhull/src/qhalf.c b/extern/qhull/src/qhalf.c deleted file mode 100644 index a2b3875dd7f..00000000000 --- a/extern/qhull/src/qhalf.c +++ /dev/null @@ -1,324 +0,0 @@ -/*<html><pre> -<a href="qh-qhull.htm" - >-------------------------------</a><a name="TOP">-</a> - - qhalf.c - compute the intersection of halfspaces about a point - - see unix.c for full interface - - copyright (c) 1993-2002, The Geometry Center -*/ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <ctype.h> -#include <math.h> -#include "qhull.h" -#include "mem.h" -#include "qset.h" - -#if __MWERKS__ && __POWERPC__ -#include <SIOUX.h> -#include <Files.h> -#include <console.h> -#include <Desk.h> - -#elif __cplusplus -extern "C" { - int isatty (int); -} - -#elif _MSC_VER -#include <io.h> -#define isatty _isatty - -#else -int isatty (int); /* returns 1 if stdin is a tty - if "Undefined symbol" this can be deleted along with call in main() */ -#endif - -/*-<a href="qh-qhull.htm#TOC" - >-------------------------------</a><a name="prompt">-</a> - - qh_prompt - long prompt for qhull - - notes: - restricted version of qhull.c - - see: - concise prompt below -*/ - -/* duplicated in qhalf.htm */ -char hidden_options[]=" d n v Qbb QbB Qf Qg Qm Qr QR Qv Qx Qz TR E V Fa FA FC FD FS Ft FV Gt Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 "; - -char qh_prompta[]= "\n\ -qhalf- compute the intersection of halfspaces about a point\n\ - http://www.geom.umn.edu/software/qhull %s\n\ -\n\ -input (stdin):\n\ - optional interior point: dimension, 1, coordinates\n\ - first lines: dimension+1 and number of halfspaces\n\ - other lines: halfspace coefficients followed by offset\n\ - comments: start with a non-numeric character\n\ -\n\ -options:\n\ - Hn,n - specify coordinates of interior point\n\ - Qt - triangulated output\n\ - QJ - joggled input instead of merged facets\n\ - Qc - keep coplanar halfspaces\n\ - Qi - keep other redundant halfspaces\n\ -\n\ -Qhull control options:\n\ - QJn - randomly joggle input in range [-n,n]\n\ -%s%s%s%s"; /* split up qh_prompt for Visual C++ */ -char qh_promptb[]= "\ - Qbk:0Bk:0 - remove k-th coordinate from input\n\ - Qs - search all halfspaces for the initial simplex\n\ - QGn - print intersection if visible to halfspace n, -n for not\n\ - QVn - print intersections for halfspace n, -n if not\n\ -\n\ -"; -char qh_promptc[]= "\ -Trace options:\n\ - T4 - trace at level n, 4=all, 5=mem/gauss, -1= events\n\ - Tc - check frequently during execution\n\ - Ts - print statistics\n\ - Tv - verify result: structure, convexity, and redundancy\n\ - Tz - send all output to stdout\n\ - TFn - report summary when n or more facets created\n\ - TI file - input data from file, no spaces or single quotes\n\ - TO file - output results to file, may be enclosed in single quotes\n\ - TPn - turn on tracing when halfspace n added to intersection\n\ - TMn - turn on tracing at merge n\n\ - TWn - trace merge facets when width > n\n\ - TVn - stop qhull after adding halfspace n, -n for before (see TCn)\n\ - TCn - stop qhull after building cone for halfspace n (see TVn)\n\ -\n\ -Precision options:\n\ - Cn - radius of centrum (roundoff added). Merge facets if non-convex\n\ - An - cosine of maximum angle. Merge facets if cosine > n or non-convex\n\ - C-0 roundoff, A-0.99/C-0.01 pre-merge, A0.99/C0.01 post-merge\n\ - Rn - randomly perturb computations by a factor of [1-n,1+n]\n\ - Un - max distance below plane for a new, coplanar halfspace\n\ - Wn - min facet width for outside halfspace (before roundoff)\n\ -\n\ -Output formats (may be combined; if none, produces a summary to stdout):\n\ - f - facet dump\n\ - G - Geomview output (dual convex hull)\n\ - i - non-redundant halfspaces incident to each intersection\n\ - m - Mathematica output (dual convex hull)\n\ - o - OFF format (dual convex hull: dimension, points, and facets)\n\ - p - vertex coordinates of dual convex hull (coplanars if 'Qc' or 'Qi')\n\ - s - summary (stderr)\n\ -\n\ -"; -char qh_promptd[]= "\ -More formats:\n\ - Fc - count plus redundant halfspaces for each intersection\n\ - - Qc (default) for coplanar and Qi for other redundant\n\ - Fd - use cdd format for input (homogeneous with offset first)\n\ - FF - facet dump without ridges\n\ - FI - ID of each intersection\n\ - Fm - merge count for each intersection (511 max)\n\ - Fn - count plus neighboring intersections for each intersection\n\ - FN - count plus intersections for each non-redundant halfspace\n\ - FO - options and precision constants\n\ - Fp - dim, count, and intersection coordinates\n\ - FP - nearest halfspace and distance for each redundant halfspace\n\ - FQ - command used for qhalf\n\ - Fs - summary: #int (8), dim, #halfspaces, #non-redundant, #intersections\n\ - for output: #non-redundant, #intersections, #coplanar\n\ - halfspaces, #non-simplicial intersections\n\ - #real (2), max outer plane, min vertex\n\ - Fv - count plus non-redundant halfspaces for each intersection\n\ - Fx - non-redundant halfspaces\n\ -\n\ -"; -char qh_prompte[]= "\ -Geomview output (2-d, 3-d and 4-d; dual convex hull)\n\ - Ga - all points (i.e., transformed halfspaces) as dots\n\ - Gp - coplanar points and vertices as radii\n\ - Gv - vertices (i.e., non-redundant halfspaces) as spheres\n\ - Gi - inner planes (i.e., halfspace intersections) only\n\ - Gn - no planes\n\ - Go - outer planes only\n\ - Gc - centrums\n\ - Gh - hyperplane intersections\n\ - Gr - ridges\n\ - GDn - drop dimension n in 3-d and 4-d output\n\ -\n\ -Print options:\n\ - PAn - keep n largest facets (i.e., intersections) by area\n\ - Pdk:n- drop facet if normal[k] <= n (default 0.0)\n\ - PDk:n- drop facet if normal[k] >= n\n\ - Pg - print good facets (needs 'QGn' or 'QVn')\n\ - PFn - keep facets whose area is at least n\n\ - PG - print neighbors of good facets\n\ - PMn - keep n facets with most merges\n\ - Po - force output. If error, output neighborhood of facet\n\ - Pp - do not report precision problems\n\ -\n\ - . - list of all options\n\ - - - one line descriptions of all options\n\ -"; -/* for opts, don't assign 'e' or 'E' to a flag (already used for exponent) */ - -/*-<a href="qh-qhull.htm#TOC" - >-------------------------------</a><a name="prompt2">-</a> - - qh_prompt2 - synopsis for qhull -*/ -char qh_prompt2[]= "\n\ -qhalf- halfspace intersection about a point. Qhull %s\n\ - input (stdin): [dim, 1, interior point], dim+1, n, coefficients+offset\n\ - comments start with a non-numeric character\n\ -\n\ -options (qhalf.htm):\n\ - Hn,n - specify coordinates of interior point\n\ - Qt - triangulated output\n\ - QJ - joggled input instead of merged facets\n\ - Tv - verify result: structure, convexity, and redundancy\n\ - . - concise list of all options\n\ - - - one-line description of all options\n\ -\n\ -output options (subset):\n\ - s - summary of results (default)\n\ - Fp - intersection coordinates\n\ - Fv - non-redundant halfspaces incident to each intersection\n\ - Fx - non-redundant halfspaces\n\ - o - OFF file format (dual convex hull)\n\ - G - Geomview output (dual convex hull)\n\ - m - Mathematica output (dual convex hull)\n\ - QVn - print intersections for halfspace n, -n if not\n\ - TO file - output results to file, may be enclosed in single quotes\n\ -\n\ -examples:\n\ - rbox d | qconvex FQ n | qhalf s H0,0,0 Fp\n\ - rbox c | qconvex FQ FV n | qhalf s i\n\ - rbox c | qconvex FQ FV n | qhalf s o\n\ -\n\ -"; -/* for opts, don't assign 'e' or 'E' to a flag (already used for exponent) */ - -/*-<a href="qh-qhull.htm#TOC" - >-------------------------------</a><a name="prompt3">-</a> - - qh_prompt3 - concise prompt for qhull -*/ -char qh_prompt3[]= "\n\ -Qhull %s.\n\ -Except for 'F.' and 'PG', upper_case options take an argument.\n\ -\n\ - incidences Geomview mathematica OFF_format point_dual\n\ - summary facet_dump\n\ -\n\ - Fc_redundant Fd_cdd_in FF_dump_xridge FIDs Fmerges\n\ - Fneighbors FN_intersect FOptions Fp_coordinates FP_nearest\n\ - FQhalf Fsummary Fv_halfspace Fx_non_redundant\n\ -\n\ - Gvertices Gpoints Gall_points Gno_planes Ginner\n\ - Gcentrums Ghyperplanes Gridges Gouter GDrop_dim\n\ -\n\ - PArea_keep Pdrop d0:0D0 Pgood PFacet_area_keep\n\ - PGood_neighbors PMerge_keep Poutput_forced Pprecision_not\n\ -\n\ - Qbk:0Bk:0_drop Qcoplanar QG_half_good Qi_redundant QJoggle\n\ - Qsearch_1st Qtriangulate QVertex_good\n\ -\n\ - T4_trace Tcheck_often Tstatistics Tverify Tz_stdout\n\ - TFacet_log TInput_file TPoint_trace TMerge_trace TOutput_file\n\ - TWide_trace TVertex_stop TCone_stop\n\ -\n\ - Angle_max Centrum_size Random_dist Ucoplanar_max Wide_outside\n\ -"; - -/*-<a href="qh-qhull.htm#TOC" - >-------------------------------</a><a name="main">-</a> - - main( argc, argv ) - processes the command line, calls qhull() to do the work, and exits - - design: - initializes data structures - reads points - finishes initialization - computes convex hull and other structures - checks the result - writes the output - frees memory -*/ -int main(int argc, char *argv[]) { - int curlong, totlong; /* used !qh_NOmem */ - int exitcode, numpoints, dim; - coordT *points; - boolT ismalloc; - -#if __MWERKS__ && __POWERPC__ - char inBuf[BUFSIZ], outBuf[BUFSIZ], errBuf[BUFSIZ]; - SIOUXSettings.showstatusline= false; - SIOUXSettings.tabspaces= 1; - SIOUXSettings.rows= 40; - if (setvbuf (stdin, inBuf, _IOFBF, sizeof(inBuf)) < 0 /* w/o, SIOUX I/O is slow*/ - || setvbuf (stdout, outBuf, _IOFBF, sizeof(outBuf)) < 0 - || (stdout != stderr && setvbuf (stderr, errBuf, _IOFBF, sizeof(errBuf)) < 0)) - fprintf (stderr, "qhull internal warning (main): could not change stdio to fully buffered.\n"); - argc= ccommand(&argv); -#endif - - if ((argc == 1) && isatty( 0 /*stdin*/)) { - fprintf(stdout, qh_prompt2, qh_VERSION); - exit(qh_ERRnone); - } - if (argc > 1 && *argv[1] == '-' && !*(argv[1]+1)) { - fprintf(stdout, qh_prompta, qh_VERSION, - qh_promptb, qh_promptc, qh_promptd, qh_prompte); - exit(qh_ERRnone); - } - if (argc >1 && *argv[1] == '.' && !*(argv[1]+1)) { - fprintf(stdout, qh_prompt3, qh_VERSION); - exit(qh_ERRnone); - } - qh_init_A (stdin, stdout, stderr, argc, argv); /* sets qh qhull_command */ - exitcode= setjmp (qh errexit); /* simple statement for CRAY J916 */ - if (!exitcode) { - qh_option ("Halfspace", NULL, NULL); - qh HALFspace= True; /* 'H' */ - qh_checkflags (qh qhull_command, hidden_options); - qh_initflags (qh qhull_command); - if (qh SCALEinput) { - fprintf(qh ferr, "\ -qhull error: options 'Qbk:n' and 'QBk:n' are not used with qhalf.\n\ - Use 'Qbk:0Bk:0 to drop dimension k.\n"); - qh_errexit(qh_ERRinput, NULL, NULL); - } - points= qh_readpoints (&numpoints, &dim, &ismalloc); - if (dim >= 5) { - qh_option ("Qxact_merge", NULL, NULL); - qh MERGEexact= True; /* 'Qx' always */ - } - qh_init_B (points, numpoints, dim, ismalloc); - qh_qhull(); - qh_check_output(); - qh_produce_output(); - if (qh VERIFYoutput && !qh FORCEoutput && !qh STOPpoint && !qh STOPcone) - qh_check_points(); - exitcode= qh_ERRnone; - } - qh NOerrexit= True; /* no more setjmp */ -#ifdef qh_NOmem - qh_freeqhull( True); -#else - qh_freeqhull( False); - qh_memfreeshort (&curlong, &totlong); - if (curlong || totlong) - fprintf (stderr, "qhull internal warning (main): did not free %d bytes of long memory (%d pieces)\n", - totlong, curlong); -#endif - return exitcode; -} /* main */ - |