Development of an Intuitive 3D Sketching Tool

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Development of an Intuitive 3D Sketching Tool

• B. de Vries, A.J. Jessurun, M. Engeli

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3D Modeling SupportCurrent Status

• Application Emphasis on Drawing and
  Presentation, not on Design
• Technology (focus of this presentation)
• Geometrical Representation
• Interface

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Geometrical Representation

• Stack of operations on primitives (e.g. stretch,
  twist)
• Parameterized objects (e.g. length, width)
• Representation consistency vs. design evolution

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Interface

• Unaware of geometrical representation
• 6 DOF input devices are troublesome
• New technologies Touch sensitive LCD screen,
  Voice recognition
• Performing unreal operations is most interesting
• New metaphor instead of Mouse Windows

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DDDoolz objectives

• Minimal set of commands
• Easy creation and manipulation of masses and
  spaces
• Easy visual evaluation of the created model
• Claying metaphor
• LCD sketchpad
• Integration with design database

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Basic PrincipleFace Orientation Method

• Drag and Copy

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System Features

• Sketch
• Straight
• Array
• Curve
• Navigate
• Walk
• Fly
• Orientate
• Move
• Delete
• Rotate model
• Import 3DS, Export to Autocad

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Implementation

• World Up Geometrical primitives, scripting,
  rendering
• Sketch device Wacom sketchpad or Mouse
• Navigation device Trackball or Mouse
• Free distribution of WUP player

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Demo
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Experiences

• First Years CAAD course
• No learning Curve and Time
• Performance limits Design model
• Architectural office
• Boxes used as Spaces
• Quest for Box dimensions adjustment

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Improvements

• Group Boxes into Building Elements
• Boolean operations Clipping Box
• Texture mapping
• Adjustable Box dimensions

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How to get

• www.ds.arch.tue.nl/Research/DDDoolz