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complete and general process of object reconstruction. (Remondino,
2006)
A 3D image contains three essential components, there are: 3D
scene description, source of light angle, and view angle of the camera or
eye. There is also another part of the model, which is the surface
description. This description defines the physics of how the
corresponding model gets reflected with light. Whether the color,
shininess, and transparency would be changing as the light moves
around the corresponding object.
There are two essential reasons for building 3D models on the
computer, image-making and simulation. As the image-making defines
the object to look good, requires some complexity which looks fantastic
to the eye and reflects the almost the same model as the real one. In the
other hand, Simulation defines the object to look accurate. To be more
precise, simulation requires some tests to several objects whether they
are fit together with some tolerance or simply a yes or no answer, rather
than an image. (Norman I. Badler, 2009).
2.2.
Particular Theories
2.2.1.
Unified Modeling Language
2.2.1.1.
Use Case
According to Whitten and Bentley
(2007), use case is a
behaviorally related sequence of steps (scenario), both automated and
manual, for the purpose of completing a single business task. However
use case itself has functions to represent single goal of the system, to
capture the essence of business problems and to describe how user will
use the system. However use case itself is divided into 2 primary main
models, which are use-case diagram and use-case narrative.
1.
Use Case Diagram
Based on Whitten and Bentley
(2007), use case diagram is a
graphical model which shows a system as a collection of use cases,
actors (users) and its
relationship. Use case diagram is usually
constructed by:
1.
Use Cases
2.
Actors
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