CGAL users discussion list

["Audette, Michel A." <>]

Dear CGAL users, 

can I trouble you to help me finalize the vcpkg build on Windows? I would like to run CMake after the vcpkg instructions where I build Qt and CGAL 5.2 Qt-compatible, which seem to run fine, the attempt to compile an example meets with the following message. 

 Build FAILED.

   

    "C:\Users\maude\OneDrive\Desktop\Work\CGAL-5.2-examples\CGAL-5.2\examples\Triangulation_3\build\CMakeFiles\3.19.4\VCTargetsPath.vcxproj" (default target) (1) ->

    (PrepareForBuild target) ->

      C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppBuild.targets(411,5): error MSB8020: The build tools for C:\Users\maude\OneDrive\Desktop\Work\vcpkg\scripts\buildsystems\vcpkg.cmake (Platform Toolset = 'C:\Users\maude\OneDrive\Desktop\Work\vcpkg\scripts\buildsystems\vcpkg.cmake') cannot be found. To build using the C:\Users\maude\OneDrive\Desktop\Work\vcpkg\scripts\buildsystems\vcpkg.cmake build tools, please install C:\Users\maude\OneDrive\Desktop\Work\vcpkg\scripts\buildsystems\vcpkg.cmake build tools.  Alternatively, you may upgrade to the current Visual Studio tools by selecting the Project menu or right-click the solution, and then selecting "Retarget solution". [C:\Users\maude\OneDrive\Desktop\Work\CGAL-5.2-examples\CGAL-5.2\examples\Triangulation_3\build\CMakeFiles\3.19.4\VCTargetsPath.vcxproj]

   

        0 Warning(s)

        1 Error(s)

As far as I know, I am providing the right path to the Cmake resource, in compliance with the instruction here: https://doc.cgal.org/latest/Manual/windows.html#title0

The command cmake-gui launches the graphical interface for cmake. When you hit the Configure button, you must:

specify the Generator (e.g., Visual Studio 16 2019),

specify the Optional Platform (e.g., x64 in case you want to create 64 bit binaries),

select Specify toolchain file for cross compilation (the file vcpkg.cmake within the directory where you have installed vcpkg, e.g. C:/dev/vcpkg/scripts/buildsystems/vcpkg.cmake).

What is the issue? Do I have to put everything in /dev?

Thanks for your support. 

Michel

Michel Audette, Ph.D.

Associate Professor, Department of Computational Modeling and Simulation Engineering,

Graduate Program Director, Biomedical Engineering Institute,

Old Dominion University,

Norfolk, VA.

; cellphone: 757-470-1279 . 

 

---

From: <> on behalf of Simon Giraudot <>
Sent: Wednesday, February 10, 2021 2:19 AM
To: <>
Subject: Re: [cgal-discuss] Exporting PLY file with Color Information using Polyhedron_3 in CGAL

 

Hello,

Can you share the header of the generated PLY? I have no idea how
Blender handles colors with PLY input, but it's possible the format you
use is not recognized (I guess the usual way is to have 3 properties
unsigned char "red" "green" and "blue", or "r" "g" and "b"). Do your
colors appear if you try to load it in Meshlab?

For information, one easy way to save a mesh in PLY with colors is to
use a CGAL::Surface_mesh instead of a CGAL::Polyhedron_3 (algorithms in
CGAL should be compatible with both): in that case, you can embed the
colors as properties on the mesh simplices, and these properties are
automatically written if you call `CGAL::write_ply` on your mesh:
https://nam11.safelinks.protection.outlook.com/?url="https%3A%2F%2Fdoc.cgal.org%2Flatest%2FSurface_mesh%2Fgroup__PkgSurface__mesh.html%23ga77bbb79d449c981895eedb6c3c23bd14&amp;data=04%7C01%7Cmaudette%40odu.edu%7C2b34e313004e42d4f55608d8cd943d05%7C48bf86e811a24b8a8cb368d8be2227f3%7C0%7C0%7C637485383863905424%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=pz8uQlFFTmEpK0V9dlld3MPe79j7D0M3HoS2mJ6Hho0%3D&amp;reserved=0

Best,

--
Simon Giraudot, PhD
R&D Engineer
GeometryFactory - https://nam11.safelinks.protection.outlook.com/?url="http%3A%2F%2Fgeometryfactory.com%2F&amp;data=04%7C01%7Cmaudette%40odu.edu%7C2b34e313004e42d4f55608d8cd943d05%7C48bf86e811a24b8a8cb368d8be2227f3%7C0%7C0%7C637485383863905424%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=Jy6jtb7IMD9%2FrLTl%2Fv14oDlH%2BLwlQ6FKbR2uObpyjTY%3D&amp;reserved=0

Le 09/02/2021 à 21:14, Anisa-Aisha (
via cgal-discuss Mailing List) a écrit :
> Hello,
>
> I am a beginner in CGAL, and have been trying to export a PLY file with
> color information in CGAL. However, even though the colors are written in
> file, they are not displayed when I try to visualize it using Blender. I am
> using a Polyhedron_3 structure, and then using iterators to write to PLY
> file like it is done here (
> https://nam11.safelinks.protection.outlook.com/?url="https%3A%2F%2Fpiero.dev%2F2017%2F04%2Fhow-to-write-a-cgal-polyhedron-to-ply-or-any-other-format%2F&amp;data=04%7C01%7Cmaudette%40odu.edu%7C2b34e313004e42d4f55608d8cd943d05%7C48bf86e811a24b8a8cb368d8be2227f3%7C0%7C0%7C637485383863905424%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=Port3rXGSoZIUj73FnYm%2FatWDg3zINGTfhkf9TKtMog%3D&amp;reserved=0
> <https://nam11.safelinks.protection.outlook.com/?url="https%3A%2F%2Fpiero.dev%2F2017%2F04%2Fhow-to-write-a-cgal-polyhedron-to-ply-or-any-other-format%2F&amp;data=04%7C01%7Cmaudette%40odu.edu%7C2b34e313004e42d4f55608d8cd943d05%7C48bf86e811a24b8a8cb368d8be2227f3%7C0%7C0%7C637485383863905424%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=Port3rXGSoZIUj73FnYm%2FatWDg3zINGTfhkf9TKtMog%3D&amp;reserved=0>
> ), with addition of color property. Could anyone guide me on how to export
> PLY files in CGAL using Polyhedron_3 with color information?
> Thank you.
>
>
>
> --
> Sent from: https://nam11.safelinks.protection.outlook.com/?url="http%3A%2F%2Fcgal-discuss.949826.n4.nabble.com%2F&amp;data=04%7C01%7Cmaudette%40odu.edu%7C2b34e313004e42d4f55608d8cd943d05%7C48bf86e811a24b8a8cb368d8be2227f3%7C0%7C0%7C637485383863905424%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=C8G9Vva6EJ0rXZCbkjNf1Q9zEalUj8niFueqT4LrCf8%3D&amp;reserved=0
>

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