From e0dd0ac9dc6cbc4b3d719f057ac29ca5955439c7 Mon Sep 17 00:00:00 2001
From: Jan <jan@laupetin.net>
Date: Sun, 12 May 2024 16:35:46 +0200
Subject: [PATCH] chore: add eigen library for vector math

---
 .gitmodules          |  3 +++
 premake5.lua         |  2 ++
 src/ObjWriting.lua   |  1 +
 thirdparty/eigen     |  1 +
 thirdparty/eigen.lua | 23 +++++++++++++++++++++++
 5 files changed, 30 insertions(+)
 create mode 160000 thirdparty/eigen
 create mode 100644 thirdparty/eigen.lua

diff --git a/.gitmodules b/.gitmodules
index 28b1e92e..7bfede4e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "thirdparty/json"]
 	path = thirdparty/json
 	url = https://github.com/nlohmann/json.git
+[submodule "thirdparty/eigen"]
+	path = thirdparty/eigen
+	url = https://gitlab.com/libeigen/eigen.git
diff --git a/premake5.lua b/premake5.lua
index bcdd5ea6..9e850d85 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -84,6 +84,7 @@ workspace "OpenAssetTools"
 -- ThirdParty
 -- ========================
 include "thirdparty/catch2.lua"
+include "thirdparty/eigen.lua"
 include "thirdparty/libtomcrypt.lua"
 include "thirdparty/libtommath.lua"
 include "thirdparty/json.lua"
@@ -95,6 +96,7 @@ include "thirdparty/zlib.lua"
 -- ThirdParty group: All projects that are external dependencies
 group "ThirdParty"
     catch2:project()
+    eigen:project()
     libtommath:project()
     libtomcrypt:project()
     json:project()
diff --git a/src/ObjWriting.lua b/src/ObjWriting.lua
index fa796ae8..6ca48e19 100644
--- a/src/ObjWriting.lua
+++ b/src/ObjWriting.lua
@@ -55,6 +55,7 @@ function ObjWriting:project()
 		Utils:include(includes)
 		minilzo:include(includes)
 		minizip:include(includes)
+		eigen:include(includes)
 		json:include(includes)
 		libtomcrypt:include(includes)
 
diff --git a/thirdparty/eigen b/thirdparty/eigen
new file mode 160000
index 00000000..afb17288
--- /dev/null
+++ b/thirdparty/eigen
@@ -0,0 +1 @@
+Subproject commit afb17288cbb5bac779a850e3ec6ba106b7f42c1c
diff --git a/thirdparty/eigen.lua b/thirdparty/eigen.lua
new file mode 100644
index 00000000..1dab988d
--- /dev/null
+++ b/thirdparty/eigen.lua
@@ -0,0 +1,23 @@
+eigen = {}
+
+function eigen:include(includes)
+	if includes:handle(self:name()) then
+		includedirs {
+			path.join(ThirdPartyFolder(), "eigen", "Eigen")
+		}
+	end
+end
+
+function eigen:link()
+end
+
+function eigen:use()
+	
+end
+
+function eigen:name()
+    return "eigen"
+end
+
+function eigen:project()
+end