Transition

Transition

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Transition by Jens Kafitz







The Transition Node provides a simple toolset to the Nodegraph to add detail into the transition of mask edges.


On the left the original Mask, on the right the effect of the Transition Node with a Brownian Noise

defined as Transition Pattern



It works by calculating a Mix Value for each pixel based on the 'Transition' Mode set on the Node,

then using that Mix Value to do a linear blend between ValueA and a ValueB.


The result of that Blend between ValueA and B is composited over Black with a defined Blend Mode

Intro Video


Options


Nodegraph Connections


The 'A' Handle is the main connection that needs to be mapped in the Nodegraph.

You should feed in the Mask you want to affect.


The 'B' Handle is an optional value that can be mapped as the second component of

the calculation of the Transition.


If the 'B' Handle is not mapped, by default a contrasted version of the 'A' Handle is used.

The amount of contrast can be set on the Node Properties 'Contrast B' Slider.


A connection that can be used to offset the Mask Edges.

The 'Pattern' Handle is only evaluated if a 'Transition' Mode is set in the Node Properties

that involves a Pattern calculation


A connection that can be used to offset the Mask Edges.

The 'Transition' Handle is only evaluated if a 'Transition' Mode is set in the Node Prperties

that involves a Transition calculation


Nodegrah Properties


The Transition Mode is the Algorithm used to calculate the Mix Value between Value A and Value B



The value mapped to the 'Transition' Handle in the Nodegraph is used to Blend Value A and B



The value mapped to the 'Pattern' Handle in the Nodegraph is used to Blend Value A and B



The Pattern Handle is multiplied by the Transition Handle and the result used to Blend Value A and B



The Pattern Handle is added to a processed result (2*(Transition-0.5)) of the Transition Handle and the result is used to

Blend Value A and B.



The Pattern Handle is masked over Black with the Transition Handle and the result is used to

Blend Value A and B



The Pattern Handle is masked over White with the Transition Handle and the result is used to

Blend Value A and B



The Blend Mode used for the final compositing of the processed Mask over Black

Best results for mask detailing give modes such as Normal,Soft Light, Hard Light, Overlay etc.

although the full array of Mari Blend Modes is available for different effects.


If no value is fed into the 'B' Handle in the Nodegraph, the node automatically uses a contrasted version

of the 'A' Handle for processing. The Value on the 'Contrast B' Slider determines the Contrast applied

to the 'A' Handle when used as 'B' Handle.


If the 'B' Handle is mapped with another Node in the Nodegraph, this slider will not have any effect.









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