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| Build-it: Designing a tangible
interface for a desktop Augmented reality system |
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| By Fred
Voorhorst (Zürich, 1999). |
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| Build-It
is an AR based desktop tool based on intuitive
manipulation for the support of planning and
configuration tasks. Build-It presents the
user with two views: a table view showing
the virtual environment in plan, and a wall
projection, showing the virtual environment
in perspective. The plan view contains a (virtual)
camera that determines the image presented
on the wall view. Build-it has a so-called
graspable user interface. An interface is
called graspable when each function of the
interface is operated by means of a dedicated
physical device. The device a function is
operated with serves as a graspable function. |
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| The
basic tool: a brick. The user can put it on
an object to manipulate that object. By covering
the brick, the object is deselecetd. |
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| As a proposal, the system is started
by opening the toolbox. The tools become available
and the workspace opens itself around the opened
toolbox. |
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| The toolbox shows a special tool
vor multiple selection, a normal brick and a pen-like
selection tool to facilitate the functional difference
between the dominant and non-dominat hand. |
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| The use of this functional difference
becomes apparent when copying an object. As the
figures show, the brick is placed on the object,
holding the object, while the user uses to pen-like
tool to pull the object from underneeth the brick
thus creating a copy. |
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| For multiple selection a large
pad-handle kind of object was designed, for the
non-dominat hand. When the handle is placed in the
work space, a virtual sheet appears. With the pen-like
selection tool the user can now clip objects to
the virtual sheet thus facilitating multiple selection. |
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| Build-it® is trademark of
the company TELLWARE
GmbH |
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