Move definition logger to cpp to avoid "multiple definition" linker error

kinematics_interface/CMakeLists.txt

@@ -18,19 +18,19 @@ foreach(Dependency IN ITEMS ${THIS_PACKAGE_INCLUDE_DEPENDS})
 endforeach()
 
 # Create interface library for kinematics base class
-add_library(kinematics_interface INTERFACE)
-target_compile_features(kinematics_interface INTERFACE cxx_std_17)
-target_include_directories(kinematics_interface INTERFACE
+add_library(kinematics_interface SHARED src/kinematics_interface.cpp)
+target_compile_features(kinematics_interface PUBLIC cxx_std_17)
+target_include_directories(kinematics_interface PUBLIC
   $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
   $<INSTALL_INTERFACE:include/kinematics_interface>
 )
-ament_target_dependencies(kinematics_interface INTERFACE
+ament_target_dependencies(kinematics_interface PUBLIC
   ${THIS_PACKAGE_INCLUDE_DEPENDS}
 )
 
 # Causes the visibility macros to use dllexport rather than dllimport,
 # which is appropriate when building the dll but not consuming it.
-target_compile_definitions(kinematics_interface INTERFACE "KINEMATICS_INTERFACE_BUILDING_DLL")
+target_compile_definitions(kinematics_interface PUBLIC "KINEMATICS_INTERFACE_BUILDING_DLL")
 
 install(
   DIRECTORY include/

kinematics_interface/include/kinematics_interface/kinematics_interface.hpp

@@ -30,8 +30,6 @@
 
 namespace kinematics_interface
 {
-rclcpp::Logger LOGGER = rclcpp::get_logger("kinematics_interface");
-
 class KinematicsInterface
 {
 public:
@@ -94,61 +92,19 @@ class KinematicsInterface
 
   bool convert_cartesian_deltas_to_joint_deltas(
     std::vector<double> & joint_pos_vec, const std::vector<double> & delta_x_vec,
-    const std::string & link_name, std::vector<double> & delta_theta_vec)
-  {
-    auto joint_pos = Eigen::Map<const Eigen::VectorXd>(joint_pos_vec.data(), joint_pos_vec.size());
-    auto delta_x = Eigen::Map<const Eigen::VectorXd>(delta_x_vec.data(), delta_x_vec.size());
-    // TODO(anyone): heap allocation should be removed for realtime use
-    Eigen::VectorXd delta_theta =
-      Eigen::Map<Eigen::VectorXd>(delta_theta_vec.data(), delta_theta_vec.size());
-
-    bool ret = convert_cartesian_deltas_to_joint_deltas(joint_pos, delta_x, link_name, delta_theta);
-    for (auto i = 0ul; i < delta_theta_vec.size(); i++)
-    {
-      delta_theta_vec[i] = delta_theta[i];
-    }
-    return ret;
-  }
+    const std::string & link_name, std::vector<double> & delta_theta_vec);
 
   bool convert_joint_deltas_to_cartesian_deltas(
     const std::vector<double> & joint_pos_vec, const std::vector<double> & delta_theta_vec,
-    const std::string & link_name, std::vector<double> & delta_x_vec)
-  {
-    auto joint_pos = Eigen::Map<const Eigen::VectorXd>(joint_pos_vec.data(), joint_pos_vec.size());
-    Eigen::VectorXd delta_theta =
-      Eigen::Map<const Eigen::VectorXd>(delta_theta_vec.data(), delta_theta_vec.size());
-    if (delta_x_vec.size() != 6)
-    {
-      RCLCPP_ERROR(
-        LOGGER, "The length of the cartesian delta vector (%zu) must be 6.", delta_x_vec.size());
-      return false;
-    }
-    Eigen::Matrix<double, 6, 1> delta_x(delta_x_vec.data());
-    bool ret = convert_joint_deltas_to_cartesian_deltas(joint_pos, delta_theta, link_name, delta_x);
-    for (auto i = 0ul; i < delta_x_vec.size(); i++)
-    {
-      delta_x_vec[i] = delta_x[i];
-    }
-    return ret;
-  }
+    const std::string & link_name, std::vector<double> & delta_x_vec);
 
   bool calculate_link_transform(
     const std::vector<double> & joint_pos_vec, const std::string & link_name,
-    Eigen::Isometry3d & transform)
-  {
-    auto joint_pos = Eigen::Map<const Eigen::VectorXd>(joint_pos_vec.data(), joint_pos_vec.size());
-
-    return calculate_link_transform(joint_pos, link_name, transform);
-  }
+    Eigen::Isometry3d & transform);
 
   bool calculate_jacobian(
     const std::vector<double> & joint_pos_vec, const std::string & link_name,
-    Eigen::Matrix<double, 6, Eigen::Dynamic> & jacobian)
-  {
-    auto joint_pos = Eigen::Map<const Eigen::VectorXd>(joint_pos_vec.data(), joint_pos_vec.size());
-
-    return calculate_jacobian(joint_pos, link_name, jacobian);
-  }
+    Eigen::Matrix<double, 6, Eigen::Dynamic> & jacobian);
 };
 
 }  // namespace kinematics_interface

kinematics_interface/src/kinematics_interface.cpp

@@ -0,0 +1,83 @@
+// Copyright (c) 2022, PickNik, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+/// \author: Andy Zelenak, Paul Gesel
+/// \description: Base class for kinematics interface
+
+#include "kinematics_interface/kinematics_interface.hpp"
+
+namespace kinematics_interface
+{
+
+rclcpp::Logger LOGGER = rclcpp::get_logger("kinematics_interface");
+
+bool KinematicsInterface::convert_cartesian_deltas_to_joint_deltas(
+  std::vector<double> & joint_pos_vec, const std::vector<double> & delta_x_vec,
+  const std::string & link_name, std::vector<double> & delta_theta_vec)
+{
+  auto joint_pos = Eigen::Map<const Eigen::VectorXd>(joint_pos_vec.data(), joint_pos_vec.size());
+  auto delta_x = Eigen::Map<const Eigen::VectorXd>(delta_x_vec.data(), delta_x_vec.size());
+  // TODO(anyone): heap allocation should be removed for realtime use
+  Eigen::VectorXd delta_theta =
+    Eigen::Map<Eigen::VectorXd>(delta_theta_vec.data(), delta_theta_vec.size());
+
+  bool ret = convert_cartesian_deltas_to_joint_deltas(joint_pos, delta_x, link_name, delta_theta);
+  for (auto i = 0ul; i < delta_theta_vec.size(); i++)
+  {
+    delta_theta_vec[i] = delta_theta[i];
+  }
+  return ret;
+}
+
+bool KinematicsInterface::convert_joint_deltas_to_cartesian_deltas(
+  const std::vector<double> & joint_pos_vec, const std::vector<double> & delta_theta_vec,
+  const std::string & link_name, std::vector<double> & delta_x_vec)
+{
+  auto joint_pos = Eigen::Map<const Eigen::VectorXd>(joint_pos_vec.data(), joint_pos_vec.size());
+  Eigen::VectorXd delta_theta =
+    Eigen::Map<const Eigen::VectorXd>(delta_theta_vec.data(), delta_theta_vec.size());
+  if (delta_x_vec.size() != 6)
+  {
+    RCLCPP_ERROR(
+      LOGGER, "The length of the cartesian delta vector (%zu) must be 6.", delta_x_vec.size());
+    return false;
+  }
+  Eigen::Matrix<double, 6, 1> delta_x(delta_x_vec.data());
+  bool ret = convert_joint_deltas_to_cartesian_deltas(joint_pos, delta_theta, link_name, delta_x);
+  for (auto i = 0ul; i < delta_x_vec.size(); i++)
+  {
+    delta_x_vec[i] = delta_x[i];
+  }
+  return ret;
+}
+
+bool KinematicsInterface::calculate_link_transform(
+  const std::vector<double> & joint_pos_vec, const std::string & link_name,
+  Eigen::Isometry3d & transform)
+{
+  auto joint_pos = Eigen::Map<const Eigen::VectorXd>(joint_pos_vec.data(), joint_pos_vec.size());
+
+  return calculate_link_transform(joint_pos, link_name, transform);
+}
+
+bool KinematicsInterface::calculate_jacobian(
+  const std::vector<double> & joint_pos_vec, const std::string & link_name,
+  Eigen::Matrix<double, 6, Eigen::Dynamic> & jacobian)
+{
+  auto joint_pos = Eigen::Map<const Eigen::VectorXd>(joint_pos_vec.data(), joint_pos_vec.size());
+
+  return calculate_jacobian(joint_pos, link_name, jacobian);
+}
+
+}  // namespace kinematics_interface