fix: removes last trajectory segment with different sampling time.

this ensures that the new sample time will be lowered, thus not violating precomputed distance interpolation constraints

at the same time avoids the issue on the last point generating small displacement interpolation

moveit_planners/pilz_industrial_motion_planner/src/trajectory_functions.cpp

@@ -217,11 +217,12 @@ bool pilz_industrial_motion_planner::generateJointTrajectory(
   rclcpp::Time generation_begin = clock.now();
 
   // generate the time samples
-  const double epsilon = 10e-06;  // avoid adding the last time sample twice
   std::vector<double> time_samples;
-  for (double t_sample = 0.0; t_sample < trajectory.Duration() - epsilon; t_sample += sampling_time)
+  int num_samples = std::floor(trajectory.Duration() / sampling_time);
+  sampling_time = trajectory.Duration() / num_samples;
+  for (int i = 0; i < num_samples; ++i)
   {
-    time_samples.push_back(t_sample);
+    time_samples.push_back(i * sampling_time);
   }
   time_samples.push_back(trajectory.Duration());