duration QML Value Type

Duration defines a period between two time points. More...

Properties

• nanosec : uint32_t
• sec : int32_t

Detailed Description

Messages of this datatype are of ROS Time following this design: https://design.ros2.org/articles/clock_and_time.html

duration is a structured value type usable in QML. It maps directly to the builtin_interfaces::msg::Duration ROS 2 message type.

Construct a duration in QML by assigning a JavaScript object whose keys are its component properties, or by setting those properties individually.

See also DurationPublisher and DurationSubscriber.

Property Documentation

nanosec : uint32_t

The nanoseconds component, valid in the range [0, 1e9), to be added to the seconds component.

e.g. The duration -1.7 seconds is represented as {sec: -2, nanosec: 3e8} The duration 1.7 seconds is represented as {sec: 1, nanosec: 7e8}

sec : int32_t

The seconds component, valid over all int32 values.