From 16bec12e3e75e95d251745f904ac4e15af9c9724 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 28 Oct 2023 02:34:45 +0100
Subject: Initial OpenMesh based terrain data and tests

---
 game/terrain2.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 game/terrain2.h

(limited to 'game/terrain2.h')

diff --git a/game/terrain2.h b/game/terrain2.h
new file mode 100644
index 0000000..d2da8d0
--- /dev/null
+++ b/game/terrain2.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <OpenMesh/Core/Mesh/TriMesh_ArrayKernelT.hh>
+#include <filesystem>
+#include <glm/vec2.hpp>
+#include <thirdparty/openmesh/glmcompat.h>
+
+struct TerrainTraits : public OpenMesh::DefaultTraits {
+	FaceAttributes(OpenMesh::Attributes::Normal | OpenMesh::Attributes::Status);
+	EdgeAttributes(OpenMesh::Attributes::Status);
+	VertexAttributes(OpenMesh::Attributes::Normal | OpenMesh::Attributes::Status);
+	HalfedgeAttributes(OpenMesh::Attributes::Normal | OpenMesh::Attributes::Status);
+	using Point = glm::vec3;
+	using Normal = glm::vec3;
+};
+
+class TerrainMesh : public OpenMesh::TriMesh_ArrayKernelT<TerrainTraits> {
+public:
+	explicit TerrainMesh(const std::filesystem::path &);
+
+protected:
+	[[nodiscard]] static bool triangleContainsPoint(const glm::vec2, const glm::vec2, const glm::vec2, const glm::vec2);
+	[[nodiscard]] bool triangleContainsPoint(const glm::vec2, FaceHandle) const;
+};
-- 
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