1. General Principles of Modeling of Information Engineering Graphics L. Čiupaila, J. Zemkauskas, R. Žiūrienė Vilnius Gediminas Technical University

2. 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.

3. Action models GD IGD Geometrical DrawingInformation Geometrical Drawing

4. IEG model

5. IGD ( Information Geometrical Drawing ) working model

6. Information civil engineering drawing model

7. Drawing structure

8. Working technique

9. Graphics projections

10. Model of formation of projections with sectional views

11. Working tools Drawing field Modelling 3D operations Projections Drafting Various Help Windows Units DrawModify Drawing field formation Command line Zoom Osnap Extra helpful things The scheme of TAIGRASI computer tools

12. Drawing elements and visualization

13. TAIGRASI Surface generation possibilities adapted for educational purposes

14. TAIGRASI Solid generation possibilities adapted for educational purposes

15. Surface development in TAIGRASI

16. Intersection of surfaces in TAIGRASI a) Traditional method; b, c) TAIGRASI visualization

17. Intersection of surfaces a, b) Traditional method; c) TAIGRASI visualization

18. Projection making techniques

19. Automatization technique

20. Graphs distinctions GDIGD

21. 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

22. Tools for building plans visualization

23. Visualization tools for facade and plan elements

24. Visualization of ferro-concrete contructions

25. 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/http://www.vtu.lt/fakultetai/fmf/igk/