Name qhull, rbox 2015.2 2016/01/18 Convex hull, Delaunay triangulation, Voronoi diagrams, Halfspace intersection Documentation: html/index.htm Available from: (git@github.com:qhull/qhull.git) News and a paper: Version 1 (simplicial only): Purpose Qhull is a general dimension convex hull program that reads a set of points from stdin, and outputs the smallest convex set that contains the points to stdout. It also generates Delaunay triangulations, Voronoi diagrams, furthest-site Voronoi diagrams, and halfspace intersections about a point. Rbox is a useful tool in generating input for Qhull; it generates hypercubes, diamonds, cones, circles, simplices, spirals, lattices, and random points. Qhull produces graphical output for Geomview. This helps with understanding the output. Environment requirements Qhull and rbox should run on all 32-bit and 64-bit computers. Use an ANSI C or C++ compiler to compile the program. The software is self-contained. It comes with examples and test scripts. Qhull's C++ interface uses the STL. The C++ test program uses QTestLib from the Qt Framework. Qhull's C++ interface may change without notice. Eventually, it will move into the qhull shared library. Qhull is copyrighted software. Please read COPYING.txt and REGISTER.txt before using or distributing Qhull. To cite Qhull, please use Barber, C.B., Dobkin, D.P., and Huhdanpaa, H.T., "The Quickhull algorithm for convex hulls," ACM Trans. on Mathematical Software, 22(4):469-483, Dec 1996, http://www.qhull.org. To modify Qhull, particularly the C++ interface Qhull is on GitHub (http://github.com/qhull/qhull, git@github.com:qhull/qhull.git) For internal documentation, see html/qh-code.htm To install Qhull Qhull is precompiled for Windows 32-bit, otherwise it needs compilation. Qhull includes Makefiles for gcc and other targets, CMakeLists.txt for CMake, .sln/.vcproj/.vcxproj files for Microsoft Visual Studio, and .pro files for Qt Creator. It compiles under Windows with mingw. Install and build instructions follow. See the end of this document for a list of distributed files. ----------------- Installing Qhull on Windows 10, 8, 7 (32- or 64-bit), Windows XP, and Windows NT The zip file contains rbox.exe, qhull.exe, qconvex.exe, qdelaunay.exe, qhalf.exe, qvoronoi.exe, testqset.exe, user_eg*.exe, documentation files, and source files. Qhull.exe and user-eg3.exe are compiled with the reentrant library while the other executables use the non-reentrant library. To install Qhull: - Unzip the files into a directory (e.g., named 'qhull') - Click on QHULL-GO or open a command window into Qhull's bin directory. - Test with 'rbox D4 | qhull' To uninstall Qhull - Delete the qhull directory To learn about Qhull: - Execute 'qconvex' for a synopsis and examples. - Execute 'rbox 10 | qconvex' to compute the convex hull of 10 random points. - Execute 'rbox 10 | qconvex i TO file' to write results to 'file'. - Browse the documentation: qhull\html\index.htm - If an error occurs, Windows sends the error to stdout instead of stderr. Use 'TO xxx' to send normal output to xxx To improve the command window - Double-click the window bar to increase the size of the window - Right-click the window bar - Select Properties - Check QuickEdit Mode Select text with right-click or Enter Paste text with right-click - Change Font to Lucinda Console - Change Layout to Screen Buffer Height 999, Window Size Height 55 - Change Colors to Screen Background White, Screen Text Black - Click OK - Select 'Modify shortcut that started this window', then OK If you use qhull a lot, install a bash shell such as MSYS (www.mingw.org/wiki/msys), Road Bash (www.qhull.org/bash), or Cygwin (www.cygwin.com). ----------------- Installing Qhull on Unix with gcc To build Qhull, static libraries, shared library, and C++ interface - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - make - export LD_LIBRARY_PATH=$PWD/lib:$LD_LIBRARY_PATH The Makefiles may be edited for other compilers. If 'testqset' exits with an error, qhull is broken A simple Makefile for Qhull is in src/libqhull and src/libqhull_r. To build the Qhull executables and libqhullstatic - Extract Qhull from qhull...tgz or qhull...zip - cd src/libqhull_r # cd src/libqhull - make ----------------- Installing Qhull with CMake 2.6 or later See CMakeLists.txt for examples and further build instructions To build Qhull, static libraries, shared library, and C++ interface - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - cd build - cmake --help # List build generators - make -G "" .. && cmake .. - cmake .. - make - make install The ".." is important. It refers to the parent directory (i.e., qhull/) On Windows, CMake installs to C:/Program Files/qhull. 64-bit generators have a "Win64" tag. If creating a qhull package, please include a pkg-config file based on build/qhull*.pc.in If cmake fails with "No CMAKE_C_COMPILER could be found" - cmake was not able to find the build environment specified by -G "..." ----------------- Installing Qhull with Qt To build Qhull, including its C++ test (qhulltest) - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - Load src/qhull-all.pro into QtCreator - Build ------------------- Working with Qhull's C++ interface See html/qh-code.htm#cpp for calling Qhull from C++ programs See html/qh-code.htm#reentrant for converting from Qhull-2012 Examples of using the C++ interface user_eg3_r.cpp qhulltest/*_test.cpp Qhull's C++ interface is likely to change. Stay current with GitHub. To clone Qhull's next branch from http://github.com/qhull/qhull git init git clone git@github.com:qhull/qhull.git cd qhull git checkout next ... git pull origin next Compile qhullcpp and libqhullstatic_r with the same compiler. Both libraries use the C routines setjmp() and longjmp() for error handling. They must be compiled with the same compiler. ------------------- Calling Qhull from C programs See html/qh-code.htm#library for calling Qhull from C programs See html/qh-code.htm#reentrant for converting from Qhull-2012 Warning: You will need to understand Qhull's data structures and read the code. Most users will find it easier to call Qhull as an external command. The new, reentrant 'C' code (src/libqhull_r), passes a pointer to qhT to most Qhull routines. This allows multiple instances of Qhull to run at the same time. It simplifies the C++ interface. The non-reentrant 'C' code (src/libqhull) looks unusual. It refers to Qhull's global data structure, qhT, through a 'qh' macro (e.g., 'qh ferr'). This allows the same code to use static memory or heap memory. If qh_QHpointer is defined, qh_qh is a pointer to an allocated qhT; otherwise qh_qh is a global static data structure of type qhT. ------------------ Compiling Qhull with Microsoft Visual C++ To compile 32-bit Qhull with Microsoft Visual C++ 2010 and later - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - Load solution build/qhull-32.sln - Build target 'Win32' - Project qhulltest requires Qt for DevStudio (http://www.qt.io) Set the QTDIR environment variable to your Qt directory (e.g., c:/qt/5.2.0/5.2.0/msvc2012) If QTDIR is incorrect, precompile will fail with 'Can not locate the file specified' To compile 64-bit Qhull with Microsoft Visual C++ 2010 and later - 64-bit Qhull has larger data structures due to 64-bit pointers - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - Load solution build/qhull-64.sln - Build target 'Win32' - Project qhulltest requires Qt for DevStudio (http://www.qt.io) Set the QTDIR environment variable to your Qt directory (e.g., c:/qt/5.2.0/5.2.0/msvc2012_64) If QTDIR is incorrect, precompile will fail with 'Can not locate the file specified' To compile Qhull with Microsoft Visual C++ 2005 (vcproj files) - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - Load solution build/qhull.sln - Build target 'win32' (not 'x64') - Project qhulltest requires Qt for DevStudio (http://www.qt.io) Set the QTDIR environment variable to your Qt directory (e.g., c:/qt/4.7.4) If QTDIR is incorrect, precompile will fail with 'Can not locate the file specified' ----------------- Compiling Qhull with Qt Creator Qt (http://www.qt.io) is a C++ framework for Windows, Linux, and Macintosh Qhull uses QTestLib to test qhull's C++ interface (see src/qhulltest/) To compile Qhull with Qt Creator - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - Download the Qt SDK - Start Qt Creator - Load src/qhull-all.pro - Build ----------------- Compiling Qhull with mingw on Windows To compile Qhull with MINGW - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - Install Road Bash (http://www.qhull.org/bash) or install MSYS (http://www.mingw.org/wiki/msys) - Install MINGW-w64 (http://sourceforge.net/projects/mingw-w64). Mingw is included with Qt SDK. - make ----------------- Compiling Qhull with cygwin on Windows To compile Qhull with cygwin - Download and extract Qhull (either GitHub, .tgz file, or .zip file) - Install cygwin (http://www.cygwin.com) - Include packages for gcc, make, ar, and ln - make ----------------- Compiling from Makfile without gcc The file, qhull-src.tgz, contains documentation and source files for qhull and rbox. To unpack the tgz file - tar zxf qhull-src.tgz - cd qhull - Use qhull/Makefile Simpler Makefiles are qhull/src/libqhull/Makefile and qhull/src/libqhull_r/Makefile Compiling qhull and rbox with Makefile - in Makefile, check the CC, CCOPTS1, PRINTMAN, and PRINTC defines - the defaults are gcc and enscript - CCOPTS1 should include the ANSI flag. It defines __STDC__ - in user.h, check the definitions of qh_SECticks and qh_CPUclock. - use '#define qh_CLOCKtype 2' for timing runs longer than 1 hour - type: make - this builds: qhull qconvex qdelaunay qhalf qvoronoi rbox libqhull.a libqhull_r.a - type: make doc - this prints the man page - See also qhull/html/index.htm - if your compiler reports many errors, it is probably not a ANSI C compiler - you will need to set the -ansi switch or find another compiler - if your compiler warns about missing prototypes for fprintf() etc. - this is ok, your compiler should have these in stdio.h - if your compiler warns about missing prototypes for memset() etc. - include memory.h in qhull_a.h - if your compiler reports "global.c: storage size of 'qh_qh' isn't known" - delete the initializer "={0}" in global.c, stat.c and mem.c - if your compiler warns about "stat.c: improper initializer" - this is ok, the initializer is not used - if you have trouble building libqhull.a with 'ar' - try 'make -f Makefile.txt qhullx' - if the code compiles, the qhull test case will automatically execute - if an error occurs, there's an incompatibility between machines - If you can, try a different compiler - You can turn off the Qhull memory manager with qh_NOmem in mem.h - You can turn off compiler optimization (-O2 in Makefile) - If you find the source of the problem, please let us know - to install the programs and their man pages: - define MANDIR and BINDIR - type 'make install' - if you have Geomview (www.geomview.org) - try 'rbox 100 | qconvex G >a' and load 'a' into Geomview - run 'q_eg' for Geomview examples of Qhull output (see qh-eg.htm) ------------------ Compiling on other machines and compilers Qhull may compile with Borland C++ 5.0 bcc32. A Makefile is included. Execute 'cd src/libqhull; make -f Mborland'. If you use the Borland IDE, set the ANSI option in Options:Project:Compiler:Source:Language-compliance. Qhull may compile with Borland C++ 4.02 for Win32 and DOS Power Pack. Use 'cd src/libqhull; make -f Mborland -D_DPMI'. Qhull 1.0 compiles with Borland C++ 4.02. For rbox 1.0, use "bcc32 -WX -w- -O2-e -erbox -lc rbox.c". Use the same options for Qhull 1.0. [D. Zwick] If you have troubles with the memory manager, you can turn it off by defining qh_NOmem in mem.h. ----------------- Distributed files README.txt // Instructions for installing Qhull REGISTER.txt // Qhull registration COPYING.txt // Copyright notice QHULL-GO.lnk // Windows icon for eg/qhull-go.bat Announce.txt // Announcement CMakeLists.txt // CMake build file (2.6 or later) CMakeModules/CheckLFS.cmake // enables Large File Support in cmake File_id.diz // Package descriptor index.htm // Home page Makefile // Makefile for gcc and other compilers qhull*.md5sum // md5sum for all files bin/* // Qhull executables and dll (.zip only) build/qhull*.pc.in // pkg-config templates for qhull_r, qhull, and qhull_p build/qhull-32.sln // 32-bit DevStudio solution and project files (2010 and later) build/*-32.vcxproj build/qhull-64.sln // 64-bit DevStudio solution and project files (2010 and later) build/*-64.vcxproj build/qhull.sln // DevStudio solution and project files (2005 and 2009) build/*.vcproj eg/* // Test scripts and geomview files from q_eg html/index.htm // Manual html/qh-faq.htm // Frequently asked questions html/qh-get.htm // Download page html/qhull-cpp.xml // C++ style notes as a Road FAQ (www.qhull.org/road) src/Changes.txt // Change history for Qhull and rbox src/qhull-all.pro // Qt project eg/ q_eg // shell script for Geomview examples (eg.01.cube) q_egtest // shell script for Geomview test examples q_test // shell script to test qhull q_test-ok.txt // output from q_test qhulltest-ok.txt // output from qhulltest (Qt only) make-vcproj.sh // bash shell script to create vcproj and vcxprog files qhull-zip.sh // bash shell script for distribution files rbox consists of (bin, html): rbox.exe // Win32 executable (.zip only) rbox.htm // html manual rbox.man // Unix man page rbox.txt qhull consists of (bin, html): qconvex.exe // Win32 executables and dlls (.zip download only) qhull.exe // Built with the reentrant library (about 2% slower) qdelaunay.exe qhalf.exe qvoronoi.exe qhull_r.dll qhull-go.bat // command window qconvex.htm // html manual qdelaun.htm qdelau_f.htm qhalf.htm qvoronoi.htm qvoron_f.htm qh-eg.htm qh-code.htm qh-impre.htm index.htm qh-opt*.htm qh-quick.htm qh--*.gif // images for manual normal_voronoi_knauss_oesterle.jpg qhull.man // Unix man page qhull.txt bin/ msvcr80.dll // Visual C++ redistributable file (.zip download only) src/ qhull/unix.c // Qhull and rbox applications using non-reentrant libqhullstatic.a rbox/rbox.c qconvex/qconvex.c qhalf/qhalf.c qdelaunay/qdelaunay.c qvoronoi/qvoronoi.c qhull/unix_r.c // Qhull and rbox applications using reentrant libqhullstatic_r.a rbox/rbox_r.c qconvex/qconvex_r.c // Qhull applications built with reentrant libqhull_r/Makefile qhalf/qhalf_r.c qdelaunay/qdelaun_r.c qvoronoi/qvoronoi_r.c user_eg/user_eg_r.c // example of using qhull_r.dll from a user program user_eg2/user_eg2_r.c // example of using libqhullstatic_r.a from a user program user_eg3/user_eg3_r.cpp // example of Qhull's C++ interface libqhullcpp with libqhullstatic_r.a qhulltest/qhulltest.cpp // Test of Qhull's C++ interface using Qt's QTestLib qhull-*.pri // Include files for Qt projects testqset_r/testqset_r.c // Test of reentrant qset_r.c and mem_r.c testqset/testqset.c // Test of non-rentrant qset.c and mem.c src/libqhull libqhull.pro // Qt project for non-rentrant, shared library (qhull.dll) index.htm // design documentation for libqhull qh-*.htm qhull-exports.def // Export Definition file for Visual C++ Makefile // Simple gcc Makefile for qhull and libqhullstatic.a Mborland // Makefile for Borland C++ 5.0 libqhull.h // header file for qhull user.h // header file of user definable constants libqhull.c // Quickhull algorithm with partitioning user.c // user re-definable functions usermem.c userprintf.c userprintf_rbox.c qhull_a.h // include files for libqhull/*.c geom.c // geometric routines geom2.c geom.h global.c // global variables io.c // input-output routines io.h mem.c // memory routines, this is stand-alone code mem.h merge.c // merging of non-convex facets merge.h poly.c // polyhedron routines poly2.c poly.h qset.c // set routines, this only depends on mem.c qset.h random.c // utilities w/ Park & Miller's random number generator random.h rboxlib.c // point set generator for rbox stat.c // statistics stat.h src/libqhull_r libqhull_r.pro // Qt project for rentrant, shared library (qhull_r.dll) index.htm // design documentation for libqhull_r qh-*_r.htm qhull-exports_r.def // Export Definition file for Visual C++ Makefile // Simple gcc Makefile for qhull and libqhullstatic.a libqhull_r.h // header file for qhull user_r.h // header file of user definable constants libqhull_r.c // Quickhull algorithm wi_r.hpartitioning user_r.c // user re-definable functions usermem.c userprintf.c userprintf_rbox.c qhull_ra.h // include files for libqhull/*_r.c geom_r.c // geometric routines geom2.c geom_r.h global_r.c // global variables io_r.c // input-output routines io_r.h mem_r.c // memory routines, this is stand-alone code mem.h merge_r.c // merging of non-convex facets merge.h poly_r.c // polyhedron routines poly2.c poly_r.h qset_r.c // set routines, this only depends on mem_r.c qset.h random_r.c // utilities w/ Park & Miller's random number generator random.h rboxlib_r.c // point set generator for rbox stat_r.c // statistics stat.h src/libqhullcpp/ libqhullcpp.pro // Qt project for renentrant, static C++ library Qhull.cpp // Calls libqhull_r.c from C++ Qhull.h qt-qhull.cpp // Supporting methods for Qt Coordinates.cpp // input classes Coordinates.h PointCoordinates.cpp PointCoordinates.h RboxPoints.cpp // call rboxlib.c from C++ RboxPoints.h QhullFacet.cpp // data structure classes QhullFacet.h QhullHyperplane.cpp QhullHyperplane.h QhullPoint.cpp QhullPoint.h QhullQh.cpp QhullRidge.cpp QhullRidge.h QhullVertex.cpp QhullVertex.h QhullFacetList.cpp // collection classes QhullFacetList.h QhullFacetSet.cpp QhullFacetSet.h QhullIterator.h QhullLinkedList.h QhullPoints.cpp QhullPoints.h QhullPointSet.cpp QhullPointSet.h QhullSet.cpp QhullSet.h QhullSets.h QhullVertexSet.cpp QhullVertexSet.h functionObjects.h // supporting classes QhullError.cpp QhullError.h QhullQh.cpp QhullQh.h QhullStat.cpp QhullStat.h RoadError.cpp // Supporting base classes RoadError.h RoadLogEvent.cpp RoadLogEvent.h usermem_r-cpp.cpp // Optional override for qh_exit() to throw an error src/libqhullstatic/ libqhullstatic.pro // Qt project for non-reentrant, static library src/libqhullstatic_r/ libqhullstatic_r.pro // Qt project for reentrant, static library src/qhulltest/ qhulltest.pro // Qt project for test of C++ interface Coordinates_test.cpp // Test of each class PointCoordinates_test.cpp Qhull_test.cpp QhullFacet_test.cpp QhullFacetList_test.cpp QhullFacetSet_test.cpp QhullHyperplane_test.cpp QhullLinkedList_test.cpp QhullPoint_test.cpp QhullPoints_test.cpp QhullPointSet_test.cpp QhullRidge_test.cpp QhullSet_test.cpp QhullVertex_test.cpp QhullVertexSet_test.cpp RboxPoints_test.cpp RoadTest.cpp // Run multiple test files with QTestLib RoadTest.h ----------------- Authors: C. Bradford Barber Hannu Huhdanpaa (Version 1.0) bradb@shore.net hannu@qhull.org Qhull 1.0 and 2.0 were developed under NSF grants NSF/DMS-8920161 and NSF-CCR-91-15793 750-7504 at the Geometry Center and Harvard University. If you find Qhull useful, please let us know.