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Abstract ' This paper proposes a generative design system based on shape grammar. It aims to use for

jewelry design application. The system is aimed to support designers during exploring shapes in conceptual design, and as a source of inspiration. We studied shape transformations in jewelry design process to identify how shapes are transformed from one state to another.

Shape grammar and shape rules are used to explain the transformations of curved outlines in a logical manner.

The experimental results indicates that the interaction of both parameters (number of piecewise lines and number of shape rule applications) influence on the satisfaction of wearers onto jewelry ring shapes. Comparing to design by hand, the proposed automatic design system spends shorter time less than 30 times to generate a set of preference shapes. The proposed system creates 3D new shapes based on a finite set of shape rules defined within a shape grammar by applying transformations to primitive elements. Some examples of jewelry ring designs generated by the proposed system are illustrated in the paper.

Keywords ' Generative design, shape grammar, jewelry design

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Initial Shape

Create 3D Model 3D Modelling Technique Users

System

Input Data

Apply Shape Rule

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System User

Preferred 3D Models Apply Shape Rule

Yes No

Example of Set No.1

Shape Rule # 1

Example of Set No.2

ShapeRule #2

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x z y

7. #ก-

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[2] g !, Jewelry Design, ก $Ž:

W%ก!%", 2549.

[3] "% "Mb, กก./ก/-ก3.!

7(&/9-กI(52I;, ก- ", #$ %%$c, 2544.

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503-520, 2009.

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[6] `""#, %'ก9:8&ก AutoCAD Release 14 (For Windows 95 & NT) Y(- Z2-

!, ก $Ž: ;$ T!e=?% (#%), 2537.

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[22] < $ % ! g %%

#>!<;=, กก./ /Y"ก+.(, ก $Ž: ;$ W%ก$K! Wก, 2551.

[23] $ $! , ก(* 7(-4,

>;K%>?!%$? 1 ก 2556 ก http://www.bcn.ac.th

[24] g%%$ — , ก4./ /Y"Z%.+(*!

SPSS ./ AMOS 13ed, ก $Ž: ;$ !.

!. M%"M ก Wก, 2555.

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