path_align.cpp

/*
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#include "dwb_critics/path_align.hpp"
#include <vector>
#include <string>
#include "dwb_critics/alignment_util.hpp"
#include "pluginlib/class_list_macros.hpp"
 
namespace dwb_critics
{
 
void PathAlignCritic::onInit()
{
  PathDistCritic::onInit();
  stop_on_failure_ = false;
 
  auto node = node_.lock();
  if (!node) {
    throw std::runtime_error{"Failed to lock node"};
  }
 
  forward_point_distance_ = node->declare_or_get_parameter(
    dwb_plugin_name_ + "." + name_ + ".forward_point_distance", 0.325);
}
 
bool PathAlignCritic::prepare(
  const geometry_msgs::msg::Pose & pose, const nav_2d_msgs::msg::Twist2D & vel,
  const geometry_msgs::msg::Pose & goal,
  const nav_msgs::msg::Path & global_plan)
{
  double dx = pose.position.x - goal.position.x;
  double dy = pose.position.y - goal.position.y;
  double sq_dist = dx * dx + dy * dy;
  if (sq_dist > forward_point_distance_ * forward_point_distance_) {
    zero_scale_ = false;
  } else {
    // once we are close to goal, trying to keep the nose close to anything destabilizes behavior.
    zero_scale_ = true;
    return true;
  }
 
  return PathDistCritic::prepare(pose, vel, goal, global_plan);
}
 
double PathAlignCritic::getScale() const
{
  if (zero_scale_) {
    return 0.0;
  } else {
    return costmap_->getResolution() * 0.5 * scale_;
  }
}
 
double PathAlignCritic::scorePose(const geometry_msgs::msg::Pose & pose)
{
  return PathDistCritic::scorePose(getForwardPose(pose, forward_point_distance_));
}
 
}  // namespace dwb_critics
 
PLUGINLIB_EXPORT_CLASS(dwb_critics::PathAlignCritic, dwb_core::TrajectoryCritic)