Module: Replay Spatial Graph Edit Log (Avizo Lite)

Description:

The module Replay Spatial Graph Edit Log applies edit operations that have been recorded with Filament-Editor startLogging <dir> to a Spatial Graph.

Edit operations are stored as a sequence of JSON files together with the initial Spatial Graph, when Filament-Editor startLogging was called, and the final Spatial Graph, when Filament-Editor stopLogging was called. Intermediate Spatial Graphs are stored for some edit operations and after a certain number of changes. The filenames start with an ISO datetime, so that they can be easily ordered.

Each edit operation is stored as a JSON object with the following format:

{
    // Current file format version.
    "version": 1,

    // ISO datetime when the operation was recorded.
    "timestamp": <String>,

    // The operation type (for example "DeleteOperation").
    "operation": <String>,

    "executionType": "EXEC" | "REDO" | "UNDO",

    // See McBitfield::serialize() for encoding details.  Briefly, the number of
    // bits is stored as an int followed by the individual bits stored as
    // 4-byte words; all in little-endian.  The buffer is then compressed with
    // qCompress() and encoded as Base64.
    "highlightedSelection": <Base64-encoded string>,
    "visibleSelection": <Base64-encoded string>,

    // Additional, operation-dependent information.
    "customData": <object>
}

Connections:

Data [required]
The original spatial graph to which the edit operations shall be applied.

Step control [optional]
Connection to module that controls time.

Ports:

Log directory
Directory from which to load the log.

Step control
Controls which operations to apply. Edit operations can only be applied in forward direction starting from 0.