Add assimp-based mesh import

tests/Resources/Mesh/test_mesh.cpp

@@ -4,6 +4,7 @@
 #include <XCEngine/Core/Asset/ResourceManager.h>
 
 using namespace XCEngine::Resources;
+using namespace XCEngine::Math;
 
 namespace {
 
@@ -30,4 +31,44 @@ TEST(Mesh, GetSections) {
     EXPECT_EQ(mesh.GetSections().Size(), 0u);
 }
 
+TEST(Mesh, SetVertexAndIndexData) {
+    Mesh mesh;
+
+    StaticMeshVertex vertices[3];
+    vertices[0].position = Vector3(0.0f, 0.0f, 0.0f);
+    vertices[1].position = Vector3(1.0f, 0.0f, 0.0f);
+    vertices[2].position = Vector3(0.0f, 1.0f, 0.0f);
+
+    const uint16_t indices[3] = {0, 1, 2};
+
+    mesh.SetVertexData(vertices, sizeof(vertices), 3, sizeof(StaticMeshVertex),
+        VertexAttribute::Position | VertexAttribute::Normal | VertexAttribute::UV0);
+    mesh.SetIndexData(indices, sizeof(indices), 3, false);
+
+    EXPECT_EQ(mesh.GetVertexCount(), 3u);
+    EXPECT_EQ(mesh.GetIndexCount(), 3u);
+    EXPECT_EQ(mesh.GetVertexStride(), sizeof(StaticMeshVertex));
+    EXPECT_TRUE(HasVertexAttribute(mesh.GetVertexAttributes(), VertexAttribute::Position));
+    EXPECT_TRUE(HasVertexAttribute(mesh.GetVertexAttributes(), VertexAttribute::Normal));
+    EXPECT_TRUE(HasVertexAttribute(mesh.GetVertexAttributes(), VertexAttribute::UV0));
+    EXPECT_GT(mesh.GetMemorySize(), 0u);
+}
+
+TEST(Mesh, AddSection) {
+    Mesh mesh;
+
+    MeshSection section{};
+    section.baseVertex = 1;
+    section.vertexCount = 3;
+    section.startIndex = 6;
+    section.indexCount = 9;
+    section.materialID = 2;
+
+    mesh.AddSection(section);
+
+    ASSERT_EQ(mesh.GetSections().Size(), 1u);
+    EXPECT_EQ(mesh.GetSections()[0].baseVertex, 1u);
+    EXPECT_EQ(mesh.GetSections()[0].materialID, 2u);
+}
+
 } // namespace