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Diffstat (limited to 'extern/qhull/src/qconvex.c')
| -rw-r--r-- | extern/qhull/src/qconvex.c | 334 |
1 files changed, 0 insertions, 334 deletions
diff --git a/extern/qhull/src/qconvex.c b/extern/qhull/src/qconvex.c deleted file mode 100644 index 67b78646e50..00000000000 --- a/extern/qhull/src/qconvex.c +++ /dev/null @@ -1,334 +0,0 @@ -/*<html><pre> -<a href="qh-qhull.htm" - >-------------------------------</a><a name="TOP">-</a> - - qconvex.c - compute convex hulls using qhull - - 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 qconvex - - notes: - restricted version of qhull.c - - see: - concise prompt below -*/ - -/* duplicated in qconvex.htm */ -char hidden_options[]=" d v H Qbb Qf Qg Qm Qr Qu Qv Qx Qz TR E V Fp Gt Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 "; - -char qh_prompta[]= "\n\ -qconvex- compute the convex hull\n\ - http://www.geom.umn.edu/software/qhull %s\n\ -\n\ -input (stdin):\n\ - first lines: dimension and number of points (or vice-versa).\n\ - other lines: point coordinates, best if one point per line\n\ - comments: start with a non-numeric character\n\ -\n\ -options:\n\ - Qt - triangulated output\n\ - QJ - joggled input instead of merged facets\n\ - Qc - keep coplanar points with nearest facet\n\ - Qi - keep interior points with nearest facet\n\ -\n\ -Qhull control options:\n\ - Qbk:n - scale coord k so that low bound is n\n\ - QBk:n - scale coord k so that upper bound is n (QBk is %2.2g)\n\ - QbB - scale input to unit cube centered at the origin\n\ - Qbk:0Bk:0 - remove k-th coordinate from input\n\ - QJn - randomly joggle input in range [-n,n]\n\ - QRn - random rotation (n=seed, n=0 time, n=-1 time/no rotate)\n\ -%s%s%s%s"; /* split up qh_prompt for Visual C++ */ -char qh_promptb[]= "\ - Qs - search all points for the initial simplex\n\ - QGn - good facet if visible from point n, -n for not visible\n\ - QVn - good facet if it includes point 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 point inclusion\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 point n added to hull\n\ - TMn - turn on tracing at merge n\n\ - TWn - trace merge facets when width > n\n\ - TVn - stop qhull after adding point n, -n for before (see TCn)\n\ - TCn - stop qhull after building cone for point 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 point\n\ - Wn - min facet width for outside point (before roundoff)\n\ -\n\ -Output formats (may be combined; if none, produces a summary to stdout):\n\ - f - facet dump\n\ - G - Geomview output (see below)\n\ - i - vertices incident to each facet\n\ - m - Mathematica output (2-d and 3-d)\n\ - n - normals with offsets\n\ - o - OFF file format (dim, points and facets; Voronoi regions)\n\ - p - point coordinates \n\ - s - summary (stderr)\n\ -\n\ -"; -char qh_promptd[]= "\ -More formats:\n\ - Fa - area for each facet\n\ - FA - compute total area and volume for option 's'\n\ - Fc - count plus coplanar points for each facet\n\ - use 'Qc' (default) for coplanar and 'Qi' for interior\n\ - FC - centrum for each facet\n\ - Fd - use cdd format for input (homogeneous with offset first)\n\ - FD - use cdd format for numeric output (offset first)\n\ - FF - facet dump without ridges\n\ - Fi - inner plane for each facet\n\ - FI - ID for each facet\n\ - Fm - merge count for each facet (511 max)\n\ - Fn - count plus neighboring facets for each facet\n\ - FN - count plus neighboring facets for each point\n\ - Fo - outer plane (or max_outside) for each facet\n\ - FO - options and precision constants\n\ - FP - nearest vertex for each coplanar point\n\ - FQ - command used for qconvex\n\ - Fs - summary: #int (8), dimension, #points, tot vertices, tot facets,\n\ - for output: #vertices, #facets,\n\ - #coplanar points, #non-simplicial facets\n\ - #real (2), max outer plane, min vertex\n\ - FS - sizes: #int (0) \n\ - #real(2) tot area, tot volume\n\ - Ft - triangulation with centrums for non-simplicial facets (OFF format)\n\ - Fv - count plus vertices for each facet\n\ - FV - average of vertices (a feasible point for 'H')\n\ - Fx - extreme points (in order for 2-d)\n\ -\n\ -"; -char qh_prompte[]= "\ -Geomview output (2-d, 3-d, and 4-d)\n\ - Ga - all points as dots\n\ - Gp - coplanar points and vertices as radii\n\ - Gv - vertices as spheres\n\ - Gi - inner planes 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 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\ -qconvex- compute the convex hull. Qhull %s\n\ - input (stdin): dimension, number of points, point coordinates\n\ - comments start with a non-numeric character\n\ -\n\ -options (qconvex.htm):\n\ - Qt - triangulated output\n\ - QJ - joggled input instead of merged facets\n\ - Tv - verify result: structure, convexity, and point inclusion\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\ - i - vertices incident to each facet\n\ - n - normals with offsets\n\ - p - vertex coordinates (includes coplanar points if 'Qc')\n\ - Fx - extreme points (convex hull vertices)\n\ - FA - compute total area and volume\n\ - o - OFF format (dim, n, points, facets)\n\ - G - Geomview output (2-d, 3-d, and 4-d)\n\ - m - Mathematica output (2-d and 3-d)\n\ - QVn - print facets that include point n, -n if not\n\ - TO file- output results to file, may be enclosed in single quotes\n\ -\n\ -examples:\n\ - rbox c D2 | qconvex s n rbox c D2 | qconvex i\n\ - rbox c D2 | qconvex o rbox 1000 s | qconvex s Tv FA\n\ - rbox c d D2 | qconvex s Qc Fx rbox y 1000 W0 | qconvex s n\n\ - rbox y 1000 W0 | qconvex s QJ rbox d G1 D12 | qconvex QR0 FA Pp\n\ - rbox c D7 | qconvex FA TF1000\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 mathematica normals OFF_format points\n\ - summary facet_dump\n\ -\n\ - Farea FArea_total Fcoplanars FCentrums Fd_cdd_in\n\ - FD_cdd_out FFacet_xridge Finner FIDs Fmerges\n\ - Fneighbors FNeigh_vertex Fouter FOptions FPoint_near\n\ - FQhull Fsummary FSize Fvertices FVertex_ave\n\ - Fxtremes\n\ -\n\ - Gvertices Gpoints Gall_points Gno_planes Ginner\n\ - Gcentrums Ghyperplanes Gridges Gouter GDrop_dim\n\ -\n\ - PArea_keep Pdrop d0:0D0 PFacet_area_keep Pgood PGood_neighbors\n\ - PMerge_keep Poutput_forced Pprecision_not\n\ -\n\ - QbBound 0:0.5 QbB_scale_box Qcoplanar QGood_point Qinterior\n\ - QJoggle Qrandom QRotate Qsearch_1st Qtriangulate\n\ - 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" - >-------------------------------</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_DEFAULTbox, - 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_checkflags (qh qhull_command, hidden_options); - qh_initflags (qh qhull_command); - 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 */ - |