Interior angle at the corner, in radians, between the
two arms (origin → corner) and (corner → target). Always in
[0, π]. Returns 0 when an arm has zero length.
Same as angle, but in degrees.
Color for the arm wires, arc, dots, and label background.
True once destroy has run.
One angle measurement — three world-space anchors (origin, corner, target) plus the overlay DOM/SVG that shows the two arms and the angle at the corner.
Instances are created and owned by AngleMeasurementsTool; external callers should go through the tool's AngleMeasurementsTool.createMeasurement factory and call AngleMeasurementsTool.destroyMeasurement (or AngleMeasurementsTool.clear) to tear them down.
Layout
The measurement composes 2 arm wires, 3 anchor dots, 1 angle label, and a small arc that hints at which angle is being measured (always the interior angle ≤ 180° formed at the corner).
Toggles visible, wireVisible, labelsVisible compose like CSS visibility — hiding the whole measurement (
visible = false) overrides the others.