bool GraspData::loadRobotGraspData(const ros::NodeHandle& nh, const std::string& end_effector)
{
std::vector<std::string> joint_names;
std::vector<double> pre_grasp_posture; // todo: remove all underscore post-fixes
std::vector<double> grasp_posture;
std::vector<double> grasp_pose_to_eef;
std::vector<double> grasp_pose_to_eef_rotation;
double pregrasp_time_from_start;
double grasp_time_from_start;
std::string end_effector_name;
std::string end_effector_parent_link;
// Load a param
if (!nh.hasParam("base_link"))
{
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `base_link` missing from rosparam server. Did you load your end effector's configuration yaml file? Searching in namespace: " << nh.getNamespace());
return false;
}
nh.getParam("base_link", base_link_);
// Search within the sub-namespace of this end effector name
ros::NodeHandle child_nh(nh, end_effector);
// Load a param
if (!child_nh.hasParam("pregrasp_time_from_start"))
{
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `pregrasp_time_from_start` missing from rosparam server. Did you load your end effector's configuration yaml file? Searching in namespace: " << child_nh.getNamespace());
return false;
}
child_nh.getParam("pregrasp_time_from_start", pregrasp_time_from_start);
// Load a param
if (!child_nh.hasParam("grasp_time_from_start"))
{
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `grasp_time_from_start` missing from rosparam server. Did you load your end effector's configuration yaml file?");
return false;
}
child_nh.getParam("grasp_time_from_start", grasp_time_from_start);
// Load a param
if (!child_nh.hasParam("end_effector_name"))
{
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `end_effector_name` missing from rosparam server. Did you load your end effector's configuration yaml file?");
return false;
}
child_nh.getParam("end_effector_name", end_effector_name);
// Load a param
if (!child_nh.hasParam("end_effector_parent_link"))
{
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `end_effector_parent_link` missing from rosparam server. Did you load your end effector's configuration yaml file?");
return false;
}
child_nh.getParam("end_effector_parent_link", end_effector_parent_link);
// Load a param
if (!child_nh.hasParam("joints"))
{
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `joints` missing from rosparam server. Did you load your end effector's configuration yaml file?");
return false;
}
XmlRpc::XmlRpcValue joint_list;
child_nh.getParam("joints", joint_list);
if (joint_list.getType() == XmlRpc::XmlRpcValue::TypeArray)
for (int32_t i = 0; i < joint_list.size(); ++i)
{
ROS_ASSERT(joint_list[i].getType() == XmlRpc::XmlRpcValue::TypeString);
joint_names.push_back(static_cast<std::string>(joint_list[i]));
}
else
ROS_ERROR_STREAM_NAMED("temp","joint list type is not type array???");
if(child_nh.hasParam("pregrasp_posture"))
{
XmlRpc::XmlRpcValue preg_posture_list;
child_nh.getParam("pregrasp_posture", preg_posture_list);
ROS_ASSERT(preg_posture_list.getType() == XmlRpc::XmlRpcValue::TypeArray);
for (int32_t i = 0; i < preg_posture_list.size(); ++i)
{
ROS_ASSERT(preg_posture_list[i].getType() == XmlRpc::XmlRpcValue::TypeDouble);
pre_grasp_posture.push_back(static_cast<double>(preg_posture_list[i]));
}
}
ROS_ASSERT(child_nh.hasParam("grasp_posture"));
XmlRpc::XmlRpcValue grasp_posture_list;
child_nh.getParam("grasp_posture", grasp_posture_list);
ROS_ASSERT(grasp_posture_list.getType() == XmlRpc::XmlRpcValue::TypeArray);
for (int32_t i = 0; i < grasp_posture_list.size(); ++i)
{
ROS_ASSERT(grasp_posture_list[i].getType() == XmlRpc::XmlRpcValue::TypeDouble);
grasp_posture.push_back(static_cast<double>(grasp_posture_list[i]));
}
ROS_ASSERT(child_nh.hasParam("grasp_pose_to_eef"));
XmlRpc::XmlRpcValue g_to_eef_list;
child_nh.getParam("grasp_pose_to_eef", g_to_eef_list);
ROS_ASSERT(g_to_eef_list.getType() == XmlRpc::XmlRpcValue::TypeArray);
for (int32_t i = 0; i < g_to_eef_list.size(); ++i)
{
// Cast to double OR int
if (g_to_eef_list[i].getType() != XmlRpc::XmlRpcValue::TypeDouble)
{
if (g_to_eef_list[i].getType() != XmlRpc::XmlRpcValue::TypeInt )
{
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `grasp_pose_to_eef` wrong data type - int or double required.");
return false;
}
else
grasp_pose_to_eef.push_back(static_cast<int>(g_to_eef_list[i]));
}
else
grasp_pose_to_eef.push_back(static_cast<double>(g_to_eef_list[i]));
}
ROS_ASSERT(child_nh.hasParam("grasp_pose_to_eef_rotation"));
XmlRpc::XmlRpcValue g_to_eef_rotation_list;
child_nh.getParam("grasp_pose_to_eef_rotation", g_to_eef_rotation_list);
ROS_ASSERT(g_to_eef_rotation_list.getType() == XmlRpc::XmlRpcValue::TypeArray);
for (int32_t i = 0; i < g_to_eef_rotation_list.size(); ++i)
{
// Cast to double OR int
if (g_to_eef_rotation_list[i].getType() != XmlRpc::XmlRpcValue::TypeDouble)
{
if (g_to_eef_rotation_list[i].getType() != XmlRpc::XmlRpcValue::TypeInt )
{
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `grasp_pose_to_eef_rotation` wrong data type - int or double required.");
return false;
}
else
grasp_pose_to_eef_rotation.push_back(static_cast<int>(g_to_eef_rotation_list[i]));
}
else
grasp_pose_to_eef_rotation.push_back(static_cast<double>(g_to_eef_rotation_list[i]));
}
// -------------------------------
// Convert generic grasp pose to this end effector's frame of reference, approach direction for short
// Orientation
ROS_ASSERT(grasp_pose_to_eef_rotation.size() == 3);
Eigen::Quaterniond quat(Eigen::AngleAxis<double>(double(grasp_pose_to_eef_rotation[1]), Eigen::Vector3d::UnitY())); // turn on Z axis
// TODO: rotate for roll and yaw also, not just pitch (unit y)
// but i don't need that feature right now and it might be tricky
grasp_pose_to_eef_pose_.orientation.x = quat.x();
grasp_pose_to_eef_pose_.orientation.y = quat.y();
grasp_pose_to_eef_pose_.orientation.z = quat.z();
grasp_pose_to_eef_pose_.orientation.w = quat.w();
// Position // approach vector?
ROS_ASSERT(grasp_pose_to_eef.size() == 3);
grasp_pose_to_eef_pose_.position.x = grasp_pose_to_eef[0];
grasp_pose_to_eef_pose_.position.y = grasp_pose_to_eef[1];
grasp_pose_to_eef_pose_.position.z = grasp_pose_to_eef[2];
// -------------------------------
// Create pre-grasp posture if specified
if(!pre_grasp_posture.empty())
{
pre_grasp_posture_.header.frame_id = base_link_;
pre_grasp_posture_.header.stamp = ros::Time::now();
// Name of joints:
pre_grasp_posture_.joint_names = joint_names;
// Position of joints
pre_grasp_posture_.points.resize(1);
pre_grasp_posture_.points[0].positions = pre_grasp_posture;
pre_grasp_posture_.points[0].time_from_start = ros::Duration(pregrasp_time_from_start);
}
// -------------------------------
// Create grasp posture
grasp_posture_.header.frame_id = base_link_;
grasp_posture_.header.stamp = ros::Time::now();
// Name of joints:
grasp_posture_.joint_names = joint_names;
// Position of joints
grasp_posture_.points.resize(1);
grasp_posture_.points[0].positions = grasp_posture;
grasp_posture_.points[0].time_from_start = ros::Duration(grasp_time_from_start);
// -------------------------------
// SRDF Info
ee_parent_link_ = end_effector_parent_link;
ee_group_ = end_effector_name;
// -------------------------------
// Nums
approach_retreat_desired_dist_ = 0.2; // 0.3;
approach_retreat_min_dist_ = 0.06;
// distance from center point of object to end effector
grasp_depth_ = 0.06;// in negative or 0 this makes the grasps on the other side of the object! (like from below)
// generate grasps at PI/angle_resolution increments
angle_resolution_ = 16; //TODO parametrize this, or move to action interface
// Debug
//moveit_simple_grasps::SimpleGrasps::printObjectGraspData(grasp_data);
return true;
}
bool GraspPoseData::loadData(const ros::NodeHandle& nh)
{
std::vector<std::string> joint_names;
std::vector<double> pre_grasp_posture;
std::vector<double> grasp_posture;
std::vector<double> grasp_pose_to_eef;
std::vector<double> grasp_pose_to_eef_rotation;
double pregrasp_time_from_start;
double grasp_time_from_start;
std::string end_effector_name;
std::string end_effector_parent_link;
ROS_ASSERT(nh.hasParam("base_link"));
nh.getParam("base_link", base_link_);
ros::NodeHandle child_nh(nh, "gripper");
ROS_ASSERT(child_nh.hasParam("pregrasp_time_from_start"));
child_nh.getParam("pregrasp_time_from_start", pregrasp_time_from_start);
ROS_ASSERT(child_nh.hasParam("grasp_time_from_start"));
child_nh.getParam("grasp_time_from_start", grasp_time_from_start);
ROS_ASSERT(child_nh.hasParam("end_effector_name"));
child_nh.getParam("end_effector_name", end_effector_name);
ROS_ASSERT(child_nh.hasParam("end_effector_parent_link"));
child_nh.getParam("end_effector_parent_link", end_effector_parent_link);
ROS_ASSERT(child_nh.hasParam("joints"));
XmlRpc::XmlRpcValue joint_list;
child_nh.getParam("joints", joint_list);
if (joint_list.getType() == XmlRpc::XmlRpcValue::TypeArray) {
for (int32_t i = 0; i < joint_list.size(); ++i) {
ROS_ASSERT(joint_list[i].getType() == XmlRpc::XmlRpcValue::TypeString);
joint_names.push_back(static_cast<std::string>(joint_list[i]));
}
} else {
ROS_ERROR_STREAM_NAMED("temp", "joint list type is not type array???");
}
if (child_nh.hasParam("pregrasp_posture")) {
XmlRpc::XmlRpcValue preg_posture_list;
child_nh.getParam("pregrasp_posture", preg_posture_list);
ROS_ASSERT(preg_posture_list.getType() == XmlRpc::XmlRpcValue::TypeArray);
for (int32_t i = 0; i < preg_posture_list.size(); ++i) {
ROS_ASSERT(preg_posture_list[i].getType() == XmlRpc::XmlRpcValue::TypeDouble);
pre_grasp_posture.push_back(static_cast<double>(preg_posture_list[i]));
}
}
ROS_ASSERT(child_nh.hasParam("grasp_posture"));
XmlRpc::XmlRpcValue grasp_posture_list;
child_nh.getParam("grasp_posture", grasp_posture_list);
ROS_ASSERT(grasp_posture_list.getType() == XmlRpc::XmlRpcValue::TypeArray);
for (int32_t i = 0; i < grasp_posture_list.size(); ++i) {
ROS_ASSERT(grasp_posture_list[i].getType() == XmlRpc::XmlRpcValue::TypeDouble);
grasp_posture.push_back(static_cast<double>(grasp_posture_list[i]));
}
ROS_ASSERT(child_nh.hasParam("grasp_pose_to_eef"));
XmlRpc::XmlRpcValue g_to_eef_list;
child_nh.getParam("grasp_pose_to_eef", g_to_eef_list);
ROS_ASSERT(g_to_eef_list.getType() == XmlRpc::XmlRpcValue::TypeArray);
for (int32_t i = 0; i < g_to_eef_list.size(); ++i) {
if (g_to_eef_list[i].getType() != XmlRpc::XmlRpcValue::TypeDouble) {
if (g_to_eef_list[i].getType() != XmlRpc::XmlRpcValue::TypeInt ) {
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `grasp_pose_to_eef` wrong data type - int or double required.");
return false;
} else {
grasp_pose_to_eef.push_back(static_cast<int>(g_to_eef_list[i]));
}
} else {
grasp_pose_to_eef.push_back(static_cast<double>(g_to_eef_list[i]));
}
}
ROS_ASSERT(child_nh.hasParam("grasp_pose_to_eef_rotation"));
XmlRpc::XmlRpcValue g_to_eef_rotation_list;
child_nh.getParam("grasp_pose_to_eef_rotation", g_to_eef_rotation_list);
ROS_ASSERT(g_to_eef_rotation_list.getType() == XmlRpc::XmlRpcValue::TypeArray);
for (int32_t i = 0; i < g_to_eef_rotation_list.size(); ++i) {
if (g_to_eef_rotation_list[i].getType() != XmlRpc::XmlRpcValue::TypeDouble) {
if (g_to_eef_rotation_list[i].getType() != XmlRpc::XmlRpcValue::TypeInt ) {
ROS_ERROR_STREAM_NAMED("grasp_data_loader","Grasp configuration parameter `grasp_pose_to_eef_rotation` wrong data type - int or double required.");
return false;
} else {
grasp_pose_to_eef_rotation.push_back(static_cast<int>(g_to_eef_rotation_list[i]));
}
} else {
grasp_pose_to_eef_rotation.push_back(static_cast<double>(g_to_eef_rotation_list[i]));
}
}
ROS_ASSERT(grasp_pose_to_eef_rotation.size() == 3);
Eigen::Quaterniond quat(Eigen::AngleAxis<double>(double(grasp_pose_to_eef_rotation[1]), Eigen::Vector3d::UnitY()));
grasp_pose_to_eef_pose_.orientation.x = quat.x();
grasp_pose_to_eef_pose_.orientation.y = quat.y();
grasp_pose_to_eef_pose_.orientation.z = quat.z();
grasp_pose_to_eef_pose_.orientation.w = quat.w();
ROS_ASSERT(grasp_pose_to_eef.size() == 3);
grasp_pose_to_eef_pose_.position.x = grasp_pose_to_eef[0];
grasp_pose_to_eef_pose_.position.y = grasp_pose_to_eef[1];
grasp_pose_to_eef_pose_.position.z = grasp_pose_to_eef[2];
if (!pre_grasp_posture.empty()) {
pre_grasp_posture_.header.frame_id = base_link_;
pre_grasp_posture_.header.stamp = ros::Time::now();
pre_grasp_posture_.joint_names = joint_names;
pre_grasp_posture_.points.resize(1);
pre_grasp_posture_.points[0].positions = pre_grasp_posture;
pre_grasp_posture_.points[0].time_from_start = ros::Duration(pregrasp_time_from_start);
}
grasp_posture_.header.frame_id = base_link_;
grasp_posture_.header.stamp = ros::Time::now();
grasp_posture_.joint_names = joint_names;
grasp_posture_.points.resize(1);
grasp_posture_.points[0].positions = grasp_posture;
grasp_posture_.points[0].time_from_start = ros::Duration(grasp_time_from_start);
ee_parent_link_ = end_effector_parent_link;
ee_group_ = end_effector_name;
approach_retreat_desired_dist_ = 0.2;
approach_retreat_min_dist_ = 0.06;
grasp_depth_ = 0.06;
angle_resolution_ = 16;
return true;
}
