Specification of an Operator for the Design of Architectural Forms: “Pleating”
During the creative phase, the architect introduces hypotheses and validates them by trying out various adjustments during the process of conception. The use of existing CAD tools during the conception phase is not compatible with the iterative aspect of this process. So the challenge is to define a model that takes into account the entire creative process in a trial and error framework during the conceptual phase. In this article we will define the “pleating” operator.
Specification and Implementation of a Folding Parametric Operator to Assist Architectural Conception at the Drafting Stage
In the early stage of creation, the architect tests his work hypotheses by making many adjustments while designing. During the sketching phase, the existing modeling tools are not compatible with the iterative nature of this process. So the challenge lies in the definition of a model which will allow the whole creative process with its various trying and going back during the phase of conception. We will illustrate this model by implementing a parametric operator allowing the action of folding. Its parametric specificity will enable the architect, in the design phase, to make the numerous moves and returns required to obtain an optimal shape.
Linguistic Operation System for Design of Architectural Form
In a process of architectural design, an architect not only draws by himself/herself but also lets another person modify a design by given a linguistic instruction expressing how the design ought to be. In the case of utilization of CAD systems, it is useful if the system modifies the design according to the linguistic instruction. On the other hand, because of the recent increase of the opportunities of designing a building whose roof has complicated curved surface, it extremely takes labor to change the design. This paper proposes a linguistic operation system that modifies a design according to the linguistic instruction of the modification by the user to support design of a complicated form with curved surface. The proposed system is expected to be integrated with a CAD system. First, the system presents a perspective sketch of a designed form. From the values of the design variables that characterize the form in the system, the system calculates the position of the form in “the association image space.” Second, the designer puts a linguistic instruction i.e., words as like as “let it be more light” to modify the form. The words used for the instruction have the position in the association image space. In the association image space, the system moves the position of the form to a new position that gets to be near the position of the given word. The system calculates the values of the design variables of the form corresponding to the new position. We need a mapping from every vector representing the position of the changed form in the association image space to the corresponding vector representing the values of the design variables. To find the mapping, we construct a neural network system with three levels. Finally, the system presents a perspective sketch of changed form using the calculated values of design variables.