Intro: Generative Design
Basics: Parametric Modeling
Generative design is a design method in which the output â€“ image, sound, architectural models, animation â€“ is generated by a set of rules or an Algorithm, normally by using a computer program. Most generative design is based on parametric modeling. It is a fast method of exploring design possibilities that is used in various design fields
[Figure 1] shows a set of two objects with their dimensioned relationships. This example can be referred to as an explicit design.Any of the dimensioned parameters can be changed, but only through a sequence of erasures and redrawing.
The benefits of this process are immediate. It is a huge leap in the quality of our process, since we are not bound by our tools anymore; now it will be us who design our own tools. Parametric design is fundamental when minimizing the effort needed to create and test design variants. Generating an automated process eliminates tedious repetitive tasks, the need for complicated calculations on the fly, the possibility of human error, and generates huge shifts in the outcomes with slight variations of the original parameters.
Parametric thinking introduces the shift in the mindset between the search for an specific static and defined formal solution, and the design of the specific stages and factors used to achieve it. It is the use of algorithms and advanced computational techniques not for the sake of drawing shapes, but creating formal possibilities. It is not about producing a solution, but the family of possible outcomes. It is the shift from using CAD software as a representation tool, to do it as a design tool. It is, altogether, the new paradigm.
[Figure 2] is an example of a parametrically generated model and shows the difference in philosophy between explicit and associative geometry.
[Figure 3] shows the topological effect of reconfiguring the parameters. A parametrically generated model can be â€˜updatedâ€™ by identifying one or more of the parameters and changing their values.
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Published on Apr 1, 2014