Class MouseAngleMeasurementsControl

Mouse-driven creation of AngleMeasurements on a AngleMeasurementsTool.

Workflow

• activate attaches pointermove + click to the tool's View canvas.
• As the cursor moves over geometry the control shows a small hover dot at the picked world point (or hides it on a miss).
• First click captures the origin anchor.
• Second click captures the corner (the angle's vertex) and starts a "draft" measurement whose target follows the cursor so the angle updates live.
• Third click commits the target anchor.
• Esc cancels an in-progress measurement.

Repeats until deactivate (or destroy) is called.

Picking goes through AngleMeasurementsTool.picker — the same BVH-based path the rest of the demo helpers use.