Building relationships: one example

The AEC software developers have been marketing and trying to up-sell the arrival of their current generation of intelligent modelers for quite a while now, however the adoption and usage has left a lot to be desired. While companies like Autodesk and Bentley have chosen to develop this functionality using their existing 2D systems as a foundation, developers like Graphisoft, Nemetschek and Revit approached the problem with ground-up 3D architectural systems.

The software developers are trying to produce design software that will model an entire building in 3D, using not just lines, circles and arcs but geometric and intelligent compound objects, such as 'virtual' doors, walls, windows etc. Each object has a graphical display component (depending on the view required - 2D/3D, British Standard symbols etc.), attribute data (as to what its parameters are, this could be cost or finish) and 'behavior'. The concept here is that these 'objects' will all interact within the developer's CAD package, with the architect or engineer creating a virtual model of the building/structure - e.g. walls will recognize windows once inserted and trim a correctly sized hole - and will heal, should a window get moved or deleted.
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