Fix compiler warnings

- declare qhull includes as SYSTEM
- fix uninitialized Vector3d usage

Author: rhaschke

CMakeLists.txt

@@ -105,7 +105,7 @@ target_link_libraries(${PROJECT_NAME}
     rclcpp::rclcpp
     resource_retriever::resource_retriever
 )
-target_include_directories(${PROJECT_NAME} PRIVATE ${QHULL_INCLUDE_DIRS})
+target_include_directories(${PROJECT_NAME} SYSTEM PRIVATE ${QHULL_INCLUDE_DIRS})
 
 if(BUILD_TESTING)
   # Unit tests

src/bodies.cpp

@@ -868,7 +868,7 @@ void bodies::ConvexMesh::useDimensions(const shapes::Shape* shape)
   mesh_data_->triangles_.clear();
   mesh_data_->vertices_.clear();
   mesh_data_->mesh_radiusB_ = 0.0;
-  mesh_data_->mesh_center_ = Eigen::Vector3d();
+  mesh_data_->mesh_center_ = Eigen::Vector3d::Zero();
 
   double xdim = maxX - minX;
   double ydim = maxY - minY;