Architectural structure design methods, architectural structure design apparatuses, and articles of manufacture

An architectural structure design apparatus comprising:

• a display configured to depict visual images;
• a user interface configured to receive a plurality of user inputs;
• and
• processing circuitry coupled with the display and the user interface and configured to access the user inputs, to control the display to depict a building plan of an architectural structure responsive to the user inputs, to automatically provide a roof for the architectural structure of the building plan, and to control the display to depict the roof;
• and wherein the processing circuitry is configured to identify a condition wherein a roof is appropriate for the architectural structure and to automatically provide the roof as a result of the identification and in the absence of user input which instructs the processing circuitry to provide the roof.

An article of manufacture comprising:

• a computer-readable storage medium encoded with programming configured to cause processing circuitry to perform processing comprising:
• controlling a display to depict an architectural structure comprising a roof;
• accessing a plurality of user inputs at a plurality of moments in time;
• responsive to the user inputs, performing a plurality of respective modifications to the architectural structure at a plurality of moments in time;
• for at least one of the modifications, automatically altering the roof in the absence of user input which instructs alteration of the roof;
• for at least an other of the modifications, maintaining the roof unchanged and in substantially the same configuration as prior to the other of the modifications;
• and
• controlling the display to depict the architectural structure comprising the modifications and the roof after the altering.