// Copyright 2018 The Cartographer Authors
//
// 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.

syntax = "proto3";

import "cartographer/common/proto/ceres_solver_options.proto";

package cartographer.mapping.proto;

message ConstantVelocityPoseExtrapolatorOptions {
  // Time constant in seconds for the orientation moving average based on
  // observed gravity via the IMU. It should be chosen so that the error
  // 1. from acceleration measurements not due to gravity (which gets worse when
  // the constant is reduced) and
  // 2. from integration of angular velocities (which gets worse when the
  // constant is increased) is balanced.
  double imu_gravity_time_constant = 1;
  double pose_queue_duration = 2;
}

message ImuBasedPoseExtrapolatorOptions {
  double pose_queue_duration = 1;
  double gravity_constant = 2;
  double pose_translation_weight = 3;
  double pose_rotation_weight = 4;
  double imu_acceleration_weight = 5;
  double imu_rotation_weight = 6;
  cartographer.common.proto.CeresSolverOptions solver_options = 7;
  double odometry_translation_weight = 8;
  double odometry_rotation_weight = 9;
}

message PoseExtrapolatorOptions {
  bool use_imu_based = 1;
  ConstantVelocityPoseExtrapolatorOptions constant_velocity = 2;
  ImuBasedPoseExtrapolatorOptions imu_based = 3;
}