- Openflipper - lists.rwth-aachen.de

Boolean support in OpenFlipper?
by ardi 07 May '18

07 May '18

Hi! Reading the paper "Simple and Robust Boolean Operations for Triangulated Surfaces", by Mei and Tipper (available here: https://arxiv.org/pdf/1308.4434.pdf ), it mentions that "Besides the well-known libraries CGAL [23], several open source packages (MeshLab [5], OpenFlipper [15], MEPP [13]) also contain robust implementations of Boolean operations". However, I've been browsing the OpenFlipper source code, and I don't see any traces of boolean or CSG algorithms. I'm looking for a robust implementation of boolean operations in meshes with a license similar to OpenFlipper (i.e.: non-copyleft), so if there's such an implementation, please tell me. Thanks! ardi

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Thank you
by Emanuele Gissi 11 Apr '18

11 Apr '18

I would like to thank the developers for this great project. I am using OpenFlipper for remeshing parts of a Boeing 747 for use in a fire simulation with the FDS CFD code (https://pages.nist.gov/fds-smv/, open source as well). Thank you again, Emanuele Gissi -- http://www.emanuelegissi.eu/

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Re: [Openflipper] Script Binary Export
by Bathsheba Grossman 02 Jan '18

02 Jan '18

A beautiful remesher, thanks! But it needs one thing to make it useful in a production environment. I see this question has been asked before on this list, and there is an open issue on git, and I want to add my voice: how about an option to export binary STL from scripts? Thanks again, -Bathsheba -- Bathsheba Grossman Bathsheba Sculpture LLC https://bathsheba.com Free Forms https://crystalproteins.com Crystal Proteins

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Script Binary Export
by Malte Asseln 05 Sep '17

05 Sep '17

Hi there, first, thanks for your great contribution to mesh processing. We are frequently using OpenFlipper at our chair for post-processing of STL files. Second, I have a question regarding the export settings. We have the following script: var input = core.loadObject(ScriptPath+"/mesh_v1.stl"); // do stuff core.saveObject(input,ScriptPath+"/mesh_v2.stl"); core.exitApplication(); The generated output is a mesh in ASCII format. Are there any parameters to use binary encoding? Thanks! Best regards, Malte -- Dipl.-Ing. Malte Asseln RWTH Aachen University, Chair of Medical Engineering Helmholtz Institute for Biomedical Engineering Pauwelsstr. 20 Tel: +49 (0) 241 80-23869 D-52074 Aachen Fax: +49 (0) 241 80-22870 Mail: asseln(a)hia.rwth-aachen.de

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Visual Script Editor crashes
by Vijai Kumar 03 Jul '17

03 Jul '17

Hello there everybody, This is vijai from bangalore. I tried building openflipper in my xubuntu 16.04.2 LTS. I was able to build it successfully without much issues. But when i tried to use the visual script editor, it crashes with the following error. I am not sure if i am missing something here. Any help is appreciated. vijai@asus:~/DevRepos/OpenFlipper-3.1/build/Build/bin$ ls libOpenMeshCore.a libOpenMeshTools.a libOpenVolumeMesh.a OpenFlipper print.ps vijai@asus:~/DevRepos/OpenFlipper-3.1/build/Build/bin$ ./OpenFlipper ./OpenFlipper: symbol lookup error: /home/vijai/DevRepos/OpenFlipper-3.1/build/Build/lib/plugins/libPlugin-VSI.so: undefined symbol: _ZN9QXmlQueryC1Ev vijai@asus:~/DevRepos/OpenFlipper-3.1/build/Build/bin$ I have attached the ldd output too. Hopefully someone can help :) vijai@asus:~/DevRepos/OpenFlipper-3.1/build/Build/bin$ ldd OpenFlipper linux-vdso.so.1 => (0x00007ffe953af000) libOpenFlipperPluginLib.so => /home/vijai/DevRepos/OpenFlipper-3.1/build/Build/bin/./../lib/libOpenFlipperPluginLib.so (0x00007f3525a6f000) libQtOpenGL.so.4 => /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4 (0x00007f3525754000) libQtScript.so.4 => /usr/lib/x86_64-linux-gnu/libQtScript.so.4 (0x00007f3525290000) libQtHelp.so.4 => /usr/lib/x86_64-linux-gnu/libQtHelp.so.4 (0x00007f3525000000) libQtGui.so.4 => /usr/lib/x86_64-linux-gnu/libQtGui.so.4 (0x00007f352430c000) libQtNetwork.so.4 => /usr/lib/x86_64-linux-gnu/libQtNetwork.so.4 (0x00007f3523fb6000) libQtCore.so.4 => /usr/lib/x86_64-linux-gnu/libQtCore.so.4 (0x00007f3523ac3000) libGL.so.1 => /usr/lib/nvidia-375/libGL.so.1 (0x00007f352381f000) libglut.so.3 => /usr/lib/x86_64-linux-gnu/libglut.so.3 (0x00007f35235d6000) libACG.so.1.0 => /home/vijai/DevRepos/OpenFlipper-3.1/build/Build/bin/./../lib/libACG.so.1.0 (0x00007f3523220000) libOpenMeshCore.so.6.3 => /home/vijai/DevRepos/OpenFlipper-3.1/build/Build/bin/./../lib/libOpenMeshCore.so.6.3 (0x00007f3522f96000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f3522c13000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f352290a000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f35226f4000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3522329000) libGLEW.so.1.13 => /usr/lib/x86_64-linux-gnu/libGLEW.so.1.13 (0x00007f35220a6000) libgomp.so.1 => /usr/lib/x86_64-linux-gnu/libgomp.so.1 (0x00007f3521e84000) libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f3521bd9000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f35219d5000) libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f35217cb000) libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f3521490000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f3521273000) libQtSql.so.4 => /usr/lib/x86_64-linux-gnu/libQtSql.so.4 (0x00007f3521031000) libQtCLucene.so.4 => /usr/lib/x86_64-linux-gnu/libQtCLucene.so.4 (0x00007f3520d32000) libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f3520aef000) libaudio.so.2 => /usr/lib/x86_64-linux-gnu/libaudio.so.2 (0x00007f35208d6000) libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f35205c4000) libpng12.so.0 => /lib/x86_64-linux-gnu/libpng12.so.0 (0x00007f352039f000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f3520185000) libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f351ff31000) libSM.so.6 => /usr/lib/x86_64-linux-gnu/libSM.so.6 (0x00007f351fd29000) libICE.so.6 => /usr/lib/x86_64-linux-gnu/libICE.so.6 (0x00007f351fb0f000) libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007f351f8fe000) libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f351f6ec000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f351f4e3000) /lib64/ld-linux-x86-64.so.2 (0x0000555f6d1e1000) libGLX.so.0 => /usr/lib/nvidia-375/libGLX.so.0 (0x00007f351f2b3000) libGLdispatch.so.0 => /usr/lib/nvidia-375/libGLdispatch.so.0 (0x00007f351efe5000) libXxf86vm.so.1 => /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1 (0x00007f351edde000) libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f351ebbc000) libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f351e992000) libXt.so.6 => /usr/lib/x86_64-linux-gnu/libXt.so.6 (0x00007f351e729000) libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f351e525000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f351e2b4000) libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007f351e0ac000) libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f351dea7000) libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f351dca0000) vijai@asus:~/DevRepos/OpenFlipper-3.1/build/Build/bin$ Kind regards Vijai

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hi
by Manoj Dinakaran 23 May '17

23 May '17

Hi, I have the problem in loading plugin using windows 64 bit ... (for mesh prior algorithm to re mesh for HRTF simulation). Build set-up Openfipper with Cmake-GUI OS: windows X64 bit machine VS: 2010 Issues concerning the error: * Cmake simply fails with a linker error while trying to run cl.exe (clang compiler) from VS2010 folder. PFA the screenshot [cid:image001.png@01D2D3C8.68089AC0] * If the cl.exe is executed after the vcvarsx86_amd64.bat, the error is not reproduced. Query: * Does anyone come across similar issue when trying to build openflipper using Cmake on windows 64-bit machine. * Is it possible approach to call the vcvarsx86_amd64.bat script from within CMake file Will this work for the windows 64 bit as most of them are using linux or mac. KR, Manoj

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Batch Mode Not Returning Result as Expected
by Caplan, Michael 04 Jan '17

04 Jan '17

Hi there, I am trying to run a script from the command line. The script (see below) simply reads in a PLY and outputs a snapshot. When run from the OpenFlipper GUI, it produces the expected thumbnail. When run from the CLI, no thumbnail is produced. can core.snapshot be called from the batch CLI interface? Thanks, Mike var objectId = core.loadObject("/home/michael/Pictures/dental/lower.ply") print(objectId) core.snapshotBaseFileName("/home/michael/Pictures/dental/lower-openflipper.png") core.snapshot(0,300,300,false,true) print("snapshot taken")

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GCC Bug May Cause Crashes in OpenMesh
by Hans-Christian Ebke 13 Sep '16

13 Sep '16

Hi, this is an announcement to make you aware of a GCC compiler bug that caused us a lot of grief. This bug affects the C++11 version of the VectorT class in OpenMesh (and hence also any Vec(2/3/4)(d/f/i) typedef). Since OpenFlipper heavily depends on the OpenMesh vector class, it is affected as well. This bug only affects you, if * you are using OpenMesh's vector class (possibly indirectly) * and you are using GCC >= 4.9 and < 6.0 * and you are compiling with -O3 (that's default in release mode) * and you are compiling with -std=c++11 (or c++0x or c++14). If these four conditions are satisfied then the compiler sometimes generates SSE instructions (which require 16 byte alignment) using memory addresses that are not 16-byte-aligned. Since these errors lead to segfaults, suggesting that you tried to access invalid memory addresses, they are extremely hard to recognize and debug. There are several workarounds: * Use GCC <= 4.8 or use GCC >= 6.0 * or use clang * or use -O2 (instead of -O3) * or use -O3 -march=<architecture> for an architecture that supports AVX. This way the compiler will generate AVX instead of SSE instructions which do allow unaligned memory access at a small performance penalty. This is the corresponding bug report in GCC: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66598 We are currently working on adding a unit test that exposes this bug. Best Hans-Christian Ebke -- Dipl.-Inform. Hans-Christian Ebke RWTH Aachen University Department for Computer Graphics, Multimedia, and Computer Vision Ahornstraße 55 52074 Aachen Building E3, Room 114 Phone: +49 241 8021803

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[Batch mode] Save as binary file in PLY or STL
by XX-00-XX＠web.de 04 Aug '16

04 Aug '16

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[OpenFlipper] Using the batch mode
by Corentin Guézénoc 20 Jul '16

20 Jul '16

Dear OpenFlipper team, I have been trying to use the OpenFlipper batch mode, but it seems I'm not able to make it work. I'm on Windows 8.1. In the Windows console, I went to the setup directory, and pasted the test script (/01_startScript.ofs/) in the same directory. I used the following command line to run the test script (/01_startScript.ofs/) but nothing seems to happen, even when I check the Task Manager in the mean time. /OpenFlipper -b 01_startScript.ofs/ I also tried the following, with no result. /OpenFlipper -b 01_startScript.ofs -c / Could someone be so kind as to explain to me what I did wrong? Many thanks, Regards, -- <http://www.3dsoundlabs.com/> *Corentin Guézénoc * /Research Engineer 3D Sound Labs / *Mobile * +33 6 82 12 14 60 *E-mail * c.guezenoc(a)3dsoundlabs.com <https://fr.linkedin.com/in/corentinguezenoc/en>

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