如何在QT 中部署点云库（Point Cloud Library） demo 范例

Name qhull, rbox 2020.2 2020/08/31 (8.0.2) Convex hull, Delaunay triangulation, Voronoi diagrams, Halfspace intersection Documentation: html/index.htm <http://www.qhull.org/html> Available from: <http://www.qhull.org> <http://www.qhull.org/download> <http://github.com/qhull/qhull/wiki> ([email protected]:qhull/qhull.git) News and a paper: <http://www.qhull.org/news> <http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.117.405> Version 1 (simplicial only): <http://www.qhull.org/download/qhull-1.0.tar.gz> 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. <http://www.geomview.org> 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 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/wiki, [email protected]: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. (<https://github.com/qhull/qhull/wiki/Qhull-build-systems>) Install and build instructions follow. See the end of this document for a list of distributed files. ------------------ Index Installing Qhull on Windows 10, 8, 7 (32- or 64-bit), Windows XP, and Windows NT Installing Qhull on Unix with gcc Installing Qhull with CMake 2.6 or later Installing Qhull with Qt Working with Qhull's C++ interface Calling Qhull from C programs Compiling Qhull with Microsoft Visual C++ Compiling Qhull with Qt Creator Compiling Qhull with mingw/gcc on Windows Compiling Qhull with cygwin on Windows Compiling from Makfile without gcc Compiling on other machines and compilers Distributed files Authors ------------------ 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. Or 'qconvex --help' or 'qconvex -?' - 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 regularly use qhull on a Windows host, install a bash shell such as https://gitforwindows.org/ # based on MSYS2 https://github.com/git-for-windows/git/wiki http://www.msys2.org/ https://github.com/msys2/msys2/wiki [mar'19] Git for Windows v2.21 requires 'qhull --help' Install in C:\Git\... # Not 'Program Files\...' otherwise './configure && make' fails www.cygwin.com www.mingw.org/wiki/msys # for Windows XP Road Bash (www.qhull.org/bash) # based on MSYS ------------------ 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 - make test 'make install' installs Qhull at '/usr/local/'. It installs pkg-config files at '/usr/local/lib/pkgconfig'. Change the install directory with DESTDIR and PREFIX. To build 32-bit Qhull on a 64-bit host (uses 33% less memory in 4-d) - make new M32=-m32 To build 32-bit Qhull without -fpic (may be faster, but shared library may fail) - make new M32=-m32 FPIC= 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 - cmake -G "<generator>" .. # e.g., for MINGW-w64 -- cmake -G "MSYS Makefiles" .. - cmake .. - make - ctest - make install # If MSYS or UNIX, default CMAKE_INSTALL_PREFIX is '/usr/local' # otherwise if WINDOWS, installs to ../bin, ../include, and ../lib - make uninstall # Delete the files in install_manifest.txt The ".." is important. It refers to the parent directory (i.e., qhull/) CMake installs lib/pkgconfig/qhull*.pc for use with pkg-config If CMAKE_INSTALL_PREFIX is C:/Program Files/qhull, you may need to give 'Users' "full control" to qhull's sub-directories: bin, doc, include, lib, and man (folder > Properties > Security > Edit > Users). On Windows, CMake's 64-bit generators have a "Win64" tag. Qhull's data structures are substantial larger as 64-bit code than as 32-bit code. This may slow down Qhull. If cmake fails with "No CMAKE_C_COMPILER could be found" - cmake was not able to find the build environment specified by -G "..." If cmake's gcc smoketest fails after a Windows update - Reinstall MINGW-w64 and delete CMakeCache.txt. A Windows update can break gcc process creation for cc1. ------------------ Installing Qhull with Qt To build Qhull, including its C++ tes