Added center mesh parameter

Former-commit-id: e010a81e3f00ca6091e438d405e3e6ca14938b8f

src/Nazara/Graphics/Loaders/OBJ/Loader.cpp

@@ -63,7 +63,7 @@ namespace
 			unsigned int faceCount = meshes[i].faces.size();
 
 			std::vector<unsigned int> indices;
-			indices.reserve(faceCount*3); // Pire cas (si les faces sont des triangles)
+			indices.reserve(faceCount*3); // Pire cas si les faces sont des triangles
 
 			// Bien plus rapide qu'un vector (pour la recherche)
 			std::unordered_map<int, std::unordered_map<int, std::unordered_map<int, unsigned int>>> vertices;
@@ -167,6 +167,9 @@ namespace
 			subMesh->SetMaterialIndex(meshes[i].material);
 			subMesh->SetPrimitiveMode(nzPrimitiveMode_TriangleList);
 
+			if (parameters.mesh.center)
+				subMesh->Center();
+
 			if (hasNormals && hasTexCoords)
 				subMesh->GenerateTangents();
 			else if (hasTexCoords)

src/Nazara/Utility/Loaders/MD2/Loader.cpp

@@ -227,6 +227,10 @@ namespace
 		subMesh->GenerateAABB();
 		subMesh->GenerateTangents();
 		subMesh->SetMaterialIndex(0);
+
+		if (parameters.center)
+			subMesh->Center();
+
 		mesh->AddSubMesh(subMesh.release());
 
 		return true;

src/Nazara/Utility/Loaders/MD5Mesh/Parser.cpp

@@ -351,10 +351,14 @@ bool NzMD5MeshParser::Parse(NzMesh* mesh)
 
 			// Material
 			mesh->SetMaterial(i, baseDir + md5Mesh.shader);
+
 			subMesh->GenerateAABB();
 			subMesh->GenerateNormalsAndTangents();
 			subMesh->SetMaterialIndex(i);
 
+			if (m_parameters.center)
+				subMesh->Center();
+
 			mesh->AddSubMesh(subMesh.get());
 			subMesh.release();
 		}

src/Nazara/Utility/StaticMesh.cpp

@@ -7,6 +7,7 @@
 #include <Nazara/Utility/Algorithm.hpp>
 #include <Nazara/Utility/BufferMapper.hpp>
 #include <Nazara/Utility/Mesh.hpp>
+#include <Nazara/Utility/VertexMapper.hpp>
 #include <stdexcept>
 #include <Nazara/Utility/Debug.hpp>
 
@@ -20,6 +21,20 @@ NzStaticMesh::~NzStaticMesh()
 	Destroy();
 }
 
+void NzStaticMesh::Center()
+{
+	NzVector3f offset(m_aabb.x + m_aabb.width/2.f, m_aabb.y + m_aabb.height/2.f, m_aabb.z + m_aabb.depth/2.f);
+
+	NzVertexMapper mapper(this);
+	unsigned int vertexCount = mapper.GetVertexCount();
+	for (unsigned int i = 0; i < vertexCount; ++i)
+		mapper.SetPosition(i, mapper.GetPosition(i) - offset);
+
+	m_aabb.x -= offset.x;
+	m_aabb.y -= offset.y;
+	m_aabb.z -= offset.z;
+}
+
 bool NzStaticMesh::Create(NzVertexBuffer* vertexBuffer)
 {
 	Destroy();