lighttroupe/luz-next

class VariableInputSliderSpring < VariableInput
    title                "Slider Spring"
    description "Acts as if a spring of a chosen strength is pulling the current value to the chosen slider value."

    categories :slider

    setting :slider, :slider, :summary => true

    setting :spring_strength, :float, :range => 0.0..2.0, :default => 0.1..1.0
    setting :spring_damper, :float, :range => 0.0..1.0, :default => 0.9..1.0

    def value
        delta = (slider - last_value)

        # Accelerate
        @velocity = (((@velocity || 0.0) * spring_damper) + (delta * spring_strength))

        last_value + @velocity
    end
end