A point in the version frame of vid in the render frame; null when vid is not loaded
A direction in the version frame of vid in the render frame, the same length; null when vid is not loaded
A point of the measurement frame (where the measuring tools work, mm) in the version frame of vid; null when vid is not loaded
A render point in the version frame of vid; null when vid is not loaded
A render direction in the version frame of vid, the same length; null when vid is not loaded
A point in the version frame of vid in the measurement frame (mm); null when vid is not loaded
viewer3d.frames of both 3D viewers: a loaded version's own frame (its coordinates before alignment and placement, in metres) and the render frame (the camera's and the section planes', mm). What a stored value keeps its coordinates in, as the render frame moves with the first loaded model (docs/ui-api-wp4/1-frames-and-placement.md F3)