MorphMan 4.0 layers

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MorphMan 4.0 Layers

How markers define layers
Each layer contains its own set of markers, which define correspondence between source and target pixels. Each layer has its individual transparency and distortion curves. That means there is one and the same curve for all markers on the layer, but curves could be different for different layers. You can add and delete layers, switch them on and off, lock and unlock them for editing; the contents of layers (markers) can be copied and pasted between layers.
Markers on each layer not only control morphing but also define what part of source and target image will participate in morphing on this layer – everything except areas inside closed-shape markers and bounding polygon around other markers will be treated as transparent. To render project with layers Morph Man first calculates morphing for each layer and then superposes layers taking into account the transparency mask on each layer.

The picture shows how different markers cut image in layers.

Background layer
The bottom layer, or background, is treated differently – program always adds (invisibly to user) to background markers a rectangle with vertexes in all image corners. This guarantees that background layer does not contain transparent areas and that morphing on background layer is done the same way as in classical case. Background layer is present in all projects; project with single layer is identical to classical morphing.
It is important to understand how Morph Man decides what portions of image belong to particular layer and what layer areas will be transparent. Parts of image which are inside all closed-shape markers (e.g. ellipses or closed polygons) will belong to the layer, additionally included will be part of image inside bounding polygon comprising all non-closed markers (e.g. points and lines) on this level.