Animation & Shaping - Processing Library \ Shaper \ BackShaper

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BackShaper

BackShaper is a modified cubic function which provides anticipation. Anticipation is often used in animation to create a wind-up and follow through effect. A backwards motion occurs before the forward action is executed. The default is an anticipation of 0.1, or 10% of the motion from 0 to 1.

BackShaper is capable of producing values outside of the 0 to 1 range, if you are working in a domain which requires 0 to 1, be sure to use clamp().

May be referred to as Tween.BACK for use in setEasing().

Constructor


				BackShaper()

				BackShaper( shapeMode )

				BackShaper( shapeMode, transition )

				BackShaper( shapeMode, transitionX, transitionY )

Parameters

shapeMode: int: a shaping mode such as Shaper.SIGMOID
transitionX: float: sets the transition point in the x dimension for SIGMOID and SEAT
transitionY: float: sets the transition point in the f(x) dimension, for skewing the transition

Methods

setAnticipation(): Sets the anticipation, how far back the shape should go before moving forward
getAnticipation(): Returns the amount of anticipation.

Implementation

f(x){
  x*x*( (s+1)*x - s )
}

Related

Shaper