Hair Stretch Constraint
Editor Properties: (see get_editor_property/set_editor_property)
project_stretch(bool): [Read-Write] Enable ther projection of the stretch constraint after the xpbd loop
solve_stretch(bool): [Read-Write] Enable the solve of the stretch constraint during the xpbd loop
stretch_damping(float): [Read-Write] Damping for the stretch constraint between 0 and 1
stretch_scale(RuntimeFloatCurve): [Read-Write] This curve determines how much the stretch stiffness will be scaled along each strand.
The X axis range is [0,1], 0 mapping the root and 1 the tip
stretch_stiffness(float): [Read-Write] Stiffness for the stretch constraint in GPa