thatopen-impl-measurements

The ThatOpen viewer supports measuring distances, areas, volumes, and angles on BIM scenes using snapping and unit handling. You enable a measurement type, configure the world reference, and start a session to get precise in-scene calculations.

You can perform four types of measurements on BIM scenes: LengthMeasurement, AreaMeasurement, VolumeMeasurement, and AngleMeasurement. Each extends a common base class to provide consistent snapping, unit handling, and visual rendering across different measurement modes.

Yes, the measurement system supports snapping and unit handling to ensure precise calculations on BIM models. These features are built into the core measurement lifecycle, allowing for accurate distance, area, volume, and angle measurements during design review or QA.

You manage a measurement session lifecycle using specific methods: endCreation, cancelCreation, delete, and dispose. These controls allow you to start, stop, remove, and clean up measurements within the ThatOpen viewer for reproducible results across sessions.

Yes, you can use volume measurement tools for BIM cost estimation and QA. The system provides on-demand volume calculations with consistent unit handling and visual feedback, enabling reproducible results for design reviews and cost analysis directly in the viewer.

Before measuring distances in a 3D BIM scene, you need a valid world reference configured in the viewer. The measurement system requires this world binding to accurately calculate dimensions, areas, and angles with snapping support.