boyquotes / godgal

Can you use CGAL from Godot? Find out next week in GodGAL

GodGAL: Godot Geometry Algorithms Library

The answer to the eternal question: Can you use CGAL from Godot?

Table of Contents

• GodGAL: Godot Geometry Algorithms Library
  • Table of Contents
  • Pre-requisites
    • 7-zip
      • Windows
    • CGAL
    • Boost
  • Building for Windows

Pre-requisites

Powershell functions to install the pre-requisites on Windows can be found here.

You can install all the needed dependencies (except Boost) using:

. .\PS_Scripts\install_commands.ps1
Install-GodgalDependencies

Alternatively, you can install the dependencies manually as explained below.

7-zip

7-zip is recommended to install the dependencies.

Windows

To install 7-zip we recommend using Chocolatey. Chocolatey can be installed by doing:

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Force
Invoke-WebRequest 'https://chocolatey.org/install.ps1' -UseBasicParsing | Invoke-Expression

Then installing 7-zip is as simple as running:

choco.exe install 7zip

CGAL

We first need to install a CGAL distribution, this can be done by running:

Invoke-WebRequest `
  -Uri '"https://github.com/CGAL/cgal/releases/download/v5.3.1/CGAL-5.3.1.zip' `
  -OutFile 'CGAL-5.3.1.zip'
7z.exe x 'CGAL-5.3.1.zip'

Then, we have to install GMP, similar to CGAL, we can do that as follows:

Set-Location 'CGAL-5.3.1'
Invoke-WebRequest `
  -Uri '"https://github.com/CGAL/cgal/releases/download/v5.3.1/CGAL-5.3.1-win64-auxiliary-libraries-gmp-mpfr.zip' `
  -OutFile 'CGAL-5.3.1-win64-auxiliary-libraries-gmp-mpfr.zip'
7z.exe x 'CGAL-5.3.1-win64-auxiliary-libraries-gmp-mpfr.zip'

Boost

To setup Boost you first need to download the installer from SourceForge. The installer will ask you to select an install directory, set it to something like D:\Tools\boost_1_78_0.

Next, set the following environmental variables:

• BOOST_LIBRARYDIR = D:\Tools\boost_1_78_0\lib64-msvc-14.2
• BOOST_INCLUDEDIR = D:\Tools\boost_1_78_0

Finally, add the folder D:\Tools\boost_1_78_0\lib64-msvc-14.2 to the PATH environmental variable.

Building for Windows

To build the project on Windows you can use the Powershell script provided in the repo:

# From the repository's root
& .\rebuild_win_x64.ps1