Torso

The Torso movement is defined along four directional dimensions: Vertical, Collapse, Sagittal and Lateral dimension.

• Vertical Torso Turn is a Left/Right rotation around the vertical axis (around y axis).
• Sagittal Torso Lean is a Forward/Backward leaning movement in the sagittal plan (around x axis).
• Lateral Torso Lean is a lateral flexion to the Left/Right in the lateral plan (around z axis).
• Collapse Torso movement is an upward/downward flexion in the sagittal plan (around x axis).

We distinguish two types of Torso movement: Torso Gesture and Torso posture. As mentioned in the description of Head Gesture, we can use one, two or three directional dimensions for torso gestures as well as for torso postures. Below are two examples of torso movement (including torso gesture and torso posture).

<torso id="LinearRLLateralSwing" lexeme="LateralSwing" trajectory="Linear" speed="0.5" repetition="2" amount="0.5" start="0" >
	<KeyPoint type="strokeStart">
		<LateralLean direction="Right" min="0.0" max="1.0"><!--amount*max--></LateralLean>
	</KeyPoint>

	<KeyPoint type="strokeEnd">
		<LateralLean direction="Left" min="0.0" max="1.0"><!--amount*max--></LateralLean>
	</KeyPoint>
</torso>

<torsoDirectionShift id="RightVerticalForward" >
	<VerticalTurn direction="Right" amount="0.5" min="0.0" max="1.0"></VerticalTurn>
	<SagittalLean direction="Forward" amount="0.5" min="0.0" max="1.0"></SagittalLean>
</torsoDirectionShift>

Similarly to the head gestures, the proposed set of torso movements and the maximal real values of torso movements are presented respectively in TorsoGesture and TorsoAmount XML files.