İzdüşümlerden hacime dayalı 3B'lu nesneler elde etmede dahili elemanların kullanımı

Bu makalede üç temel görünüş veya izdüşümleri verilen nesnelerin 3B'lu modellerini bilgisayar ortamında oluşturmada kullanılacak yeni bir hacimsel yaklaşım tanıtılmaktadır. Bu yaklaşım: 2B'lu nesne görünüşlerine ait dış profil ve iç ayrıntı yapılandırma elemanlarının tanınması, dış ve iç yapılandırma elemanları elde etme, görünüşlere ait elde edilen katıların doğru konuma getirilmesi için döndürülme ve taşınması, ve kesiştirme ile son katının elde edilmesini içermektedir. Tanıtılan bu metod kullanılarak Visual LISP kodunda yazılan ve AutoCAD 2000 ortamında çalışan bir program geliştirilmiştir. Bu program, orta karmaşıklık düzeyli çeş'itli nesnelerin YKG veya hacimsel modelleri hızlı bir şekilde oluşturabilmekte ve kullanıcıya sunabilmektedir.

The use of internal elements on the construction of volume-oriented 3D objects from their orthographic projections

This paper describes a new volume - oriented approach that would be used for the reconstruction of 3D models depending on their basic views or orthographic projection drawings. The approach involves: the recognition of various 2D primitives regarding contours of views and those inside of contours, application of extrusions to contours with respect to their normal vectors and then some Boolean operations (usually subtractions) by the use of inside primitives, translations and rotations of the obtained solids for bringing them in a correct orientation, and finally construction of 3D object (solid) by the application of an intersection operation. A computer program that running under AutoCAD 2000 environment has been developed by using Visual LISP facilities. This program can reconstruct volume - oriented 3D models of various components with medium complexify and shows them on the screen.

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