General%20Principles%20of%20Modeling%20of%20Information%20Engineering%20Graphics

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General Principles of Modeling of Information
Engineering Graphics

• L. Ciupaila, J. Zemkauskas, R. Žiuriene
• Vilnius Gediminas Technical University

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Introduction

• The experience showed that application of
  Engineering Graphics in computer graphics loses
  any sense because
• software is based on mathematical expressions
• EG content is a problem solving by graphical
  methods on a plane heuristically processing 3D
  information what is not needed in solving by
  mathematical form.
• So Engineering Graphics has to become
  Information Engineering Graphics (IEG)
• To solve the tasks of IEG it is necessary to have
  an applied programming system, as only advantages
  of information technologies at most, because of
• possible rational management
• automation of formalized stages
• automation of text information management.

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Action models GD IGD Geometrical
Drawing Information Geometrical Drawing
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IEG model
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IGD (Information Geometrical Drawing) working
model
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Information civil engineering drawing model
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Drawing structure
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Working technique
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Graphics projections
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Model of formation of projections with sectional
views
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The scheme of TAIGRASI computer tools
Working tools Drawing field
Modelling 3D operations Projections Drafting
Various Help Windows Units
Zoom
Osnap
Drawing field formation
Extra helpful things
Draw
Modify
Command line
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Drawing elements and visualization
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TAIGRASI Surface generation possibilitiesadapted
for educational purposes
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TAIGRASI Solid generation possibilities adapted
for educational purposes
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Surface development in TAIGRASI
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Intersection of surfaces in TAIGRASI
a) Traditional method b, c)
TAIGRASI visualization
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Intersection of surfaces
a, b) Traditional method c)
TAIGRASI visualization
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Projection making techniques
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Automatization technique
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Graphs distinctions
GD
IGD
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IGD (Information Geometrical Drawing)
possibilities
Area 3328 Perimeter 300 Center X 10 Center
Y 26 Moment of inertia X 33363142 Moment of
inertia Y 2028319 Moment of inertia XY
1642316 Radii of inertia X 32 Radii of inertia
Y 25 Central moment X 529947 Central moment Y
2196959
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Tools for building plans visualization
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Visualization tools for facade and plan elements
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Visualization of ferro-concrete contructions
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Conclucions

• Computer possibilities can be completely used
  only going over from command management to
  process management. It requires to change
  graphics content which would allow not to draw
  but get necessary information by using
  intelligence of hardware. That is why the term of
  the title information is not advertising but
  essential one which reflects absolutely different
  IEG possibilities.
• Especial role fall to software which should be
  adapted for solution of proper tasks, so
  formalization of pending tasks and modelling of
  proper tools are necessary
• The core of computer-aided graphical file
  (drawing) becomes not a view, but management of
  the object which is represented in a drawing
• IEG element structure is unique, its intellectual
  level is limited and can not be very high, so
  even in information surrounding the essential
  role falls to user.
• TAIGRASI software http//www.vtu.lt/fakultetai/fmf
  /igk/