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Recreating the past using object oriented virtual reality for Ayutthaya world heritage historical park: A case study of Wat Ratchaburana


5.2 Inheritance Object
In complicated environment, objects inherit the attributes and operations of their class. Object classes therefore are members of a super-class and inheritance networks can be established. Figures 8-11 show sub-classes, which are inherited from the super-class. For example, super-class namely Spire-topped prasat-type chedi inheritance object has four sub-classes, which indicate the period of estimate building year (1917, 1931, 2000, 2100 B.E.).


Figure 8. Spire-topped prasat-type chedi inheritance object (Leksukhum, 1998)



Figure 9. Prang-type chedi inheritance object (Leksukhum, 1998)



Figure 10. Multi-angular-type chedi inheritance object (Leksukhum,1998)



Figure 11. Multi-angular-elaborated type chedi inheritance object (Leksukhum,1998)

6. Integreated Object Oriented and Virtual Reality
After selected the most appropriate model from the system by archaeologist, the model will re-scale and map to original image, which already converted from raster image to vector image. The mapped image will transform from 1 dimension to 3 dimension with panorama or VRML (virtual reality modeling language) and put them to Web server. The security restriction is provided in the system, which allows only authorized person to manipulate databases and virtual reality information.


Figure 12. Wat Ratchaburana map (Copyright 1999 G.A. Merit)
Figure 13. Drawing of Wat Ratchaburana(Copyright 1999 G.A. Merit)



Figure 14. Original Image(Copyright 1999 G.A. Merit)
Figure 15. Image after Recreation(Copyright 1999 G.A. Merit)



Figure 16. Original Chedi Image (Copyright 1999 G.A. Merit)
Figure 17. Chedi Image after Recreation(Copyright 1999 G.A. Merit)

7. Conclusion
The historical model created in this research were derived from investigating of targeted ruins and related monuments. Historical documents, archaeological evidence, as well as imaginations were in dispensable in the completion of the work. The object oriented approach and GIS were tools for helping archaeologist to investigate the best model and virtual reality was a visualization technique to present the model in 3D with navigator.

8. Future Work
This paper addressed for designing recreation using object oriented and virtual reality approach. The next phase will attempt to implement and testing recreation software, which will reconstruct the historical object with proposed concept.

References
  • Booch, G., 1991. Object Oriented Design. The Benjamin/Cummings Publishing, California.

  • Leksukhum, S., 1998. The Subsidiary Spire-Topped Prasat-Type Chedi Wat Ratchaburana, Ayutthaya. Amarin, Bangkok.

  • G.A.Merit, 1999. Ayutthaya: World Heritage., Bangkok.

  • Summerville, I., 1992. Software Engineering. Addison-Wesley Publishing, California.
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