Class MotionClient

A gRPC-web client for a Motion service.

Implements

Constructors

Properties

callOptions: CallOptions = ...
name: string

The name of the resource.

Methods

  • Send/Receive arbitrary commands to the resource.

    Parameters

    • command: Struct

      The command to execute.

    • callOptions: CallOptions = ...

    Returns Promise<JsonValue>

    const result = await resource.doCommand({
    name: 'myCommand',
    args: { key: 'value' },
    });
  • By default: returns the plan history of the most recent moveOnGlobe() or moveOnMap() call to move a component. The plan history for executions before the most recent can be requested by providing an ExecutionID in the request. Returns a result if both of the following conditions are met:

    • The execution (call to moveOnGlobe() or moveOnMap()) is still executing or changed state within the last 24 hours
    • The robot has not reinitialized

    Plans never change. Replans always create new plans. Replans share the ExecutionID of the previously executing plan. All repeated fields are in chronological order.

    Parameters

    • componentName: PlainMessage

      The component to query

    • OptionallastPlanOnly: boolean
    • OptionalexecutionId: string
    • extra: {} = {}
    • callOptions: CallOptions = ...

    Returns Promise<motionApi.GetPlanResponse>

    const motion = new VIAM.MotionClient(machine, 'builtin');
    const baseName = new VIAM.ResourceName({
    name: 'my_base',
    namespace: 'rdk',
    type: 'component',
    subtype: 'base',
    });

    // Get the plan(s) of the base component
    const response = await motion.getPlan(baseName);
  • Get the current location and orientation of a component.

    Parameters

    • componentName: PlainMessage

      The component whose Pose is being requested.

    • destinationFrame: string

      The reference frame in which the component's Pose should be provided, if unset this defaults to the "world" reference frame.

    • supplementalTransforms: PlainMessage<commonApi.Transform>[]

      Pose information on any additional reference frames that are needed to compute the component's Pose.

    • extra: {} = {}
    • callOptions: CallOptions = ...

    Returns Promise<commonApi.PoseInFrame>

    const motion = new VIAM.MotionClient(machine, 'builtin');

    const gripperName = new VIAM.ResourceName({
    name: 'my_gripper',
    namespace: 'rdk',
    type: 'component',
    subtype: 'gripper',
    });

    // Get the gripper's pose in world coordinates
    const gripperPoseInWorld = await motion.getPose(
    gripperName,
    'world',
    []
    );
  • Returns the statuses of plans created by MoveOnGlobe calls that meet at least one of the following conditions since the motion service initialized:

    • The plan's status is in progress
    • The plan's status changed state within the last 24 hours

    All repeated fields are in chronological order.

    Parameters

    • OptionalonlyActivePlans: boolean

      If true, the response will only return plans which are executing.

    • extra: {} = {}
    • callOptions: CallOptions = ...

    Returns Promise<motionApi.ListPlanStatusesResponse>

    const motion = new VIAM.MotionClient(machine, 'builtin');

    // List plan statuses within the TTL
    const response = await motion.listPlanStatuses();
  • Move any component on the robot to a specified destination which can be from the reference frame of any other component on the robot.

    Parameters

    • destination: PlainMessage

      Destination to move to, which can a pose in the reference frame of any frame in the robot's frame system.

    • componentName: PlainMessage

      Component on the robot to move to the specified destination.

    • OptionalworldState: PlainMessage<commonApi.WorldState>

      Avoid obstacles by specifying their geometries in the world state. Augment the frame system of the robot by specifying additional transforms to add to it for the duration of the Move.

    • Optionalconstraints: PlainMessage<motionApi.Constraints>

      Constrain the way the robot will move.

    • extra: {} = {}
    • callOptions: CallOptions = ...

    Returns Promise<boolean>

    const motion = new VIAM.MotionClient(machine, 'builtin');

    // Assumes a gripper configured with name "my_gripper"
    const gripperName = new VIAM.ResourceName({
    name: 'my_gripper',
    namespace: 'rdk',
    type: 'component',
    subtype: 'gripper',
    });

    const goalPose: VIAM.Pose = {
    x: -817,
    y: -230,
    z: 62,
    oX: -1,
    oY: 0,
    oZ: 0,
    theta: 90,
    };
    const goalPoseInFrame = new VIAM.PoseInFrame({
    referenceFrame: 'world',
    pose: goalPose,
    });

    // Move the gripper
    const moved = await motion.move(goalPoseInFrame, gripperName);
  • Move a component to a specific latitude and longitude, using a MovementSensor to check the location. moveOnGlobe() is non blocking, meaning the motion service will move the component to the destination GPS point after moveOnGlobe() returns. Each successful moveOnGlobe() call retuns a unique ExectionID which you can use to identify all plans generated durring the moveOnGlobe() call. You can monitor the progress of the moveOnGlobe() call by querying getPlan() and listPlanStatuses().

    Parameters

    Returns Promise<string>

    const motion = new VIAM.MotionClient(machine, 'builtin');

    // Define destination at GPS coordinates [0,0]
    const destination: VIAM.GeoPoint = {
    latitude: 40.7,
    longitude: -73.98,
    };

    const baseName = new VIAM.ResourceName({
    name: 'my_base',
    namespace: 'rdk',
    type: 'component',
    subtype: 'base',
    });
    const movementSensorName = new VIAM.ResourceName({
    name: 'my_movement_sensor',
    namespace: 'rdk',
    type: 'component',
    subtype: 'movement_sensor',
    });

    // Move the base to the geographic location
    const globeExecutionId = await motion.moveOnGlobe(
    destination,
    baseName,
    movementSensorName
    );
  • Move a component to a Pose in respect to the origin of the SLAM map, using a SLAM service to check the location. moveOnMap()is non blocking, meaning the motion service will move the component to the destination Pose aftermoveOnMap()returns. Each successfulmoveOnMap()call retuns a unique ExectionID which you can use to identify all plans generated durring themoveOnMap()call. You can monitor the progress of themoveOnMap()call by queryinggetPlan()andlistPlanStatuses()`.

    Parameters

    Returns Promise<string>

    const motion = new VIAM.MotionClient(machine, 'builtin');

    // Define destination pose with respect to map origin
    const myPose: VIAM.Pose = {
    x: 0,
    y: 10,
    z: 0,
    oX: 0,
    oY: 0,
    oZ: 0,
    theta: 0,
    };

    const baseName = new VIAM.ResourceName({
    name: 'my_base',
    namespace: 'rdk',
    type: 'component',
    subtype: 'base',
    });
    const slamServiceName = new VIAM.ResourceName({
    name: 'my_slam_service',
    namespace: 'rdk',
    type: 'service',
    subtype: 'slam',
    });

    // Move the base to Y=10 (location of 0,10,0) relative to map origin
    const executionId = await motion.moveOnMap(
    myPose,
    baseName,
    slamServiceName
    );
  • Stop a component being moved by an in progress moveOnGlobe() or moveOnMap() call.

    Parameters

    • componentName: PlainMessage

      The component to stop

    • extra: {} = {}
    • callOptions: CallOptions = ...

    Returns Promise<null>

    const motion = new VIAM.MotionClient(machine, 'builtin');
    const baseName = new VIAM.ResourceName({
    name: 'my_base',
    namespace: 'rdk',
    type: 'component',
    subtype: 'base',
    });

    // Stop the base component which was instructed to move
    await motion.stopPlan(baseName);
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