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sfa_taxonomy [2017/10/05 07:52] – external edit 127.0.0.1sfa_taxonomy [2025/03/15 11:16] (current) – external edit 127.0.0.1
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 ===== SFA Taxonomy ===== ===== SFA Taxonomy =====
  
-Taxonomy means a classification system. SFA stands for **Sabu Francis and Associates**, the company that holds the copyrights of TAD.+Taxonomy means a classification system. SFA stands for **Sabu Francis and Associates**, the architectural practice which discovered and used this taxonomy in all their projects.
  
 The SFA Taxonomy is based on the fractal theories in geometry. According to the fractal theory, all the volumes in architecture designs can be represented by either solids or spaces.  The SFA Taxonomy is based on the fractal theories in geometry. According to the fractal theory, all the volumes in architecture designs can be represented by either solids or spaces. 
  
 In TAD, objects  are classified in the following types: In TAD, objects  are classified in the following types:
-  * **Atom** - It represents the space inside a room. +  * **Atom** - It represents a space that is not further sub-divided in the minds-eye of the architect. For example; when designing a building, an //atom// would be  the rooms in the building. But this actually depends on the scale of the design. If you are designing a table; it would be possible the architect considers the space below the material of the table, where your legs would go into; that space could be an atom for that scale of design.  And so on, for other scales. 
-  * **Envelope** - It represents an enclosure wrapping an atom or a group of atoms. +  *   **Envelope** - It represents an enclosure space that //wraps// other spatial elements. 
-  * **Connector** - It represents elements that connect atoms to envelopes. For example, Doors and windows. +  * **Connector** - It represents spatial elements that connects between other spatial elements. For example, Doors and windows. [[working_with_connectors|Read more on how one works with connectors here]] 
-  * **Artefacts** - It represents elements that cannot be further sub-divided at the current level of investigation. For example, canopies, interior furniture, and other similar objects.+  * **Artefacts** - It represents elements that cannot be further sub-divided at the current level of investigation. For example, canopies, interior furniture, and other similar objects. Think of //artefacts// as either fully solid matter For eg - Chajjas (aka sunshades), canopies etc... or they are to be later broken down further into its constituent ''atoms", "envelopes" and "connectors "; when the design gets detailed out.
   * **Linked-nodes** - It represents a set of artefacts that are linked to each other. For example, column-beam frame.   * **Linked-nodes** - It represents a set of artefacts that are linked to each other. For example, column-beam frame.
   * **Pseudo objects** - It represents the objects that are not actual built objects. For example, referential objects like lights, location, and look at.   * **Pseudo objects** - It represents the objects that are not actual built objects. For example, referential objects like lights, location, and look at.
  
-**Note**: In TAD, objects are assigned their properties via **isKindOf** option in [[the Site Info Pane]].+You may wonder where the //walls// are represented here. Well, by and large; walls are a //bye-product// of the fact that we classify spaces into atoms, envelopes and connectors. When you place spatial objects as per the aforesaid taxonomy, the 3D CSG (boolean) operations of subtracting the atoms and connectors from the envelopes would yield the //walls//  
 + 
 +Of course, I am referring here to the scale of a building here.  What I should have mentioned is that the boolean operation yields the //left-over// (that is the correct technical term we use) which stand for the built-matter after the boolean operation is done.  So to give an example at another scale; say you are designing a table; then this boolean operation would yield the amount of //wood// i.e. the material that would go to make the table. 
 + 
 +You may have guessed that in TAD we largely //invert// the CAD process. In CAD one largely talks of the edges of solid matter. But in TAD we often represent spaces; and the solid matter //emerges// as a bye-product of having placed the spatial elements of atoms, connectors into envelopes. 
 + 
 +**Note**: In TAD, objects are assigned their category in this taxonomy via **isKindOf** option in [[the Site Info Pane]].
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