NA SENDA DA IMAGEM A Representação ea Tecnologia na Arte

A representation of the non-linear narrative as a network of
connected scenes.
The component of the Authoring Tool that
creates the script is the Narration Engine. The
Narration Engine loads the story model or
grammar that describes in a formal way the
allowed sequence of scenes. The scene
descriptions are stored in a scene database and
are loaded at runtime. At any given time, there
are possible sequences of scenes that are correct
according to the rules of the story grammar.
Any story must be coherent; that is, at any
point in the story the circumstances at that
specific point must be consistent with
everything that happened beforehand. This does
not mean that stories must be predictable, rather
than they should make sense in a satisfying
manner. The difficulty with using interactive
storytelling is to ensure that a high degree of
participant freedom is combined with the story
in a coherent way at every instance of the art
experience.
In order to facilitate the process of building
the story model, the artist is provided with a
graphical interface where the script is
represented as a collection of bubbles (figure 5-
2). Each node of the graph represents as a scene
and the links between nodes represent the
networking of the scenes.
Editor for story modelling.
It must be pointed out that the graph is
directed. This means that the possibility of
going from scene A to scene B does not
necessarily imply the possibility of going from
B to A.
A great effort has been put on the selection of
the graphical editor. For this first version, the
implementation of the graphical interface is
based on an open source graph editor.
In order to insert a new scene, it is enough to
click and insert the name of the new scene. The
rest of the scenes are created just by drag-anddrop.
Moreover, artists can navigate through the
script and edit the information of the nodes
(scenes) and links (Interaction Metaphors) at
any time.
In order to define the flow and the possible
transitions between different scenes, a Rules
Editor will be implemented. The first approach
for this component has been a Finite State
Machine model.
B. Content Browser
When building the art experience, artists must
know exactly the content stored in the database
and have the possibility to access data that may
help him/her to create an interesting art
experience. Therefore, the Authoring Tool
supports the interaction with the cultural content
provided by the database. This interaction and
actually, the browsing of the content is done
through a domain ontology.
The Content Browser provides the artists with
information about the concepts and other related
issues concerning the ontology. The displayed
concepts are obtained querying the ontology. In
such a way, artists get the information requested
with the precise content to build the story.
The Content Browser will enhance the
content stored in the database adding a
conceptual hierarchical layer above it, being
based on two possible approaches: hyperbolic
trees or Windows alike folder trees. It provides
the following functionalities: visual exploration
support of the ontology and the content for the
authoring process; and access to the content of
the databases with which the artist will develop
the story.
Editor for browsing the ontology
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Copyright © ARTECH 2004 – 1º Workshop Luso-Galaico de Artes Digitais 12 de Julho de 2004, FC - UL