Editing shapes in TAD
TAD is quite different from other CAD/BIM software in the way it does editing. There are a very small set of commands you need to learn (Hardly 6 buttons on the UI) In this video I use a "rubber band" to show how you can quickly learn them. This video also explains why TAD did NOT use the regular route of other CAD/BIM software.
The reason is: CAD and several BIM software allows "ill formed" shapes to reside alongside "well formed" shapes -- that is simply not acceptable in a software that helps take design decisions.
Finally, it briefly explains why the so-called Municipality checking software used in several municipalities (local government bodies in India) are just a con. They claim their software can read AutoCAD DWG files to check municipal rules really gives architects a big headache.
TAD does these checks automatically in a second; and that too non-interactively. For the same reason; TAD can be used to query the ongoing design (even when the design is incomplete) and get sensible objective values -- such as floor areas, quantities, etc using its extensive programming capabilities.
