General Principles of Modeling of Information

Engineering Graphics

L. Čiupaila, J. Zemkauskas, R. Žiūrienė

Vilnius Gediminas Technical University

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.

Action models

GD IGDGeometrical Drawing Information Geometrical Drawing

User

Theory acquisitionand application

Drafting

Drawing analysis

Page setup

Tools preparation

User Drawing

Input of visualization

Formation of

parameters

Results

task analysis

visualization operationsAutomatization of

drawing fields

Visualization

Information submission

Extra information

Drawing parameters

DrawingsystemGraphical

Tools of visualization,arrangement etc.

Analysis

Formation of

Information Engineering Graphics

General IEG Special IEG

Theory

Computertools

Tasks

Essence

Auxiliarymaterial

Solutions

ToolsManagement

Practical

Self-study

Control

IGD

Mod

ellin

g

Vie

w re

ceiv

ing

and

man

agin

g

Civ

il en

gine

erin

gfo

unda

tions

Mac

hine

bui

ldin

g

Elek

troni

cs

Oth

ers

Civ

il en

gine

erin

g

IEG model

IGD (Information Geometrical Drawing) working model

Content IGD

Skill

Facilities

Practical useDrawing elements

Drawing structure

Fulfilment technology

Civ

il e

ngin

eeri

ng Civil construction

Ferro-concrete

Metal

Wooden

Solutions

Plans Sections Facades

Con

stru

ctio

ns

Flo

or

Roo

fF

ound

atio

n

Oth

ers

Tra

nsve

rse

Lon

gitu

dina

l

Fro

nt

Sid

e

Bac

k

Information civil engineering drawing model

Drawing structure

Drawing structureDrawing field

View groupsModel space

Paper space

Layers

Line types

Colors Axe

s

Con

tour

Tex

t

Dim

ensi

ons

View types

Sym

met

rica

l

Com

mon

type

Mul

tiele

men

tical

Irre

gula

r

Working technique

Fulfilment technologyF

orm

atin

g

Lay

er

man

agin

g

Com

man

dap

plic

atio

n Visualization

Transformation

Modifying

Graphics projections

Model of formation of projections with sectional views

3D model

Projection

Main view

Supplementaryview

1/2 projection

Projectionwith Section

Section

1/2

sect

ion

Working tools

Drawing field Modelling 3D operations Projections Drafting Various Help Windows Units

Draw Modify

Drawing field formation

Command line

ZoomOsnap

Extra helpful things

The scheme of TAIGRASI computer tools

Drawing elements and visualization D

raw

ing

ele

men

ts

Lines

Text

Dimensions groups

Graphical symbols

Features

TAIGRASI Surface generation possibilitiesadapted for educational purposes

TAIGRASI Solid generation possibilities adapted for educational purposes

Surface development in TAIGRASI

T1

T2a)

b)

c) d)

Intersection of surfaces in TAIGRASI

a) Traditional method; b, c) TAIGRASI visualization

Intersection of surfaces

a, b) Traditional method; c) TAIGRASI visualization

Projection making techniques

Automatization technique

Graphs distinctions

GD IGD

IGD (Information Geometrical Drawing) possibilities

Area – 3328Perimeter – 300Center X – 10Center Y – 26Moment of inertia X – 33363142Moment of inertia Y – 2028319Moment of inertia XY – 1642316Radii of inertia X – 32Radii of inertia Y – 25Central moment X – 529947Central moment Y – 2196959

Tools for building plans visualization

Visualization tools for facade and plan elements

Visualization of ferro-concrete contructions

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/