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CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id	acadia12_305
id	acadia12_305
authors	Kock, Jeffrey ; Bradley, Benjamin ; Levelle, Evan
year	2012
title	The Digital-Physical Feedback Loop: A Case Study
doi	https://doi.org/10.52842/conf.acadia.2012.305
source	ACADIA 12: Synthetic Digital Ecologies [Proceedings of the 32nd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-62407-267-3] San Francisco 18-21 October, 2012), pp. 305-314
summary	Kukje Art Center, Seoul’s new gallery designed by SO-IL, features a totally bespoke chainmail mesh system (submission note: the authors are not affiliated with SO-IL). A single sheet of complex-curved, tensioned mesh, made up of interlocking 40mm diameter stainless steel rings, wraps the building. This paper discusses the stages of a feedback loop process employed by the authors to refine a digital model of the mesh. The mesh’s perimeter attachment system does not prescribe ring locations, allowing the mesh to form find for itself during installation. As a result, the digital model must capture the behavioral tendencies of the mesh as it negotiates the building’s geometry. Paramount in meeting this challenge was the use of physical mockups. At each stage of the feedback loop process, the working digital model was used to develop a physical mockup of increased scale and complexity, and this mockup was used to refine the digital model. Ultimately, the model output of a mesh relaxation algorithm was used as the basis for engineering simulations and predictions of the mesh vertical ringcount needed at specific locations around the building. Mesh vertical ringcount predictions are validated relative to a 1:1 mockup and the installed Kukje Art Center mesh.
keywords	minimal surface , chainmail mesh , form finding , dynamic relaxation , finite element analysis , feedback loop , tensioned fabric , physical mockup , bespoke cladding , Kukje , Seoul
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:51

_id	4e59
authors	Koparkar, P. A. and Mudur, S.P.
year	1986
title	Generation of Continuous Smooth Curves Resulting from Operations on Parametric Surface Patches
source	Computer Aided Design. May, 1986. pp. 193-206 : ill. includes bibliography
summary	In recent years a number of techniques based on the subdivision principle have been suggested for detecting the curves resulting from the intersection of two parametrically defined surface patches. Silhouette curves of surfaces can also be detected using analogous techniques. Usually the output is a set of pixels or line segments which form the complete curve, though not necessarily in an ordered manner. This paper presents data structures for maintaining the result of subdivision, and algorithms for tracing the curves in a continuous fashion. Using a few iterations of the Newton-Raphson technique the curve points may be refined to any required precision. For each point on the curve the nonlinear equations are chosen by looking at the local topological nature of the curve so as to guarantee convergence of the Newton-Raphson technique in one or two iterations
keywords	curved surfaces, parametrization, curves, intersection, relaxation, geometric modeling, computational geometry
series	CADline
last changed	2003/06/02 14:41

_id	acadia16_130
id	acadia16_130
authors	Koschitz, Duks; Ramagosa, Bernat; Rosenbaum, Eric
year	2016
title	Beetle Blocks: A New Visual Language for Designers and Makers
doi	https://doi.org/10.52842/conf.acadia.2016.130
source	ACADIA // 2016: POSTHUMAN FRONTIERS: Data, Designers, and Cognitive Machines [Proceedings of the 36th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-77095-5] Ann Arbor 27-29 October, 2016, pp. 130-139
summary	We are introducing a new teaching tool to show designers, architects, and artists procedural ways of constructing objects and space. Computational algorithms have been used in design for quite some time, but not all tools are very accessible to novice programmers, especially undergraduate students. ‘Beetle Blocks’ (beetleblocks.com) is a software environment that combines an easy-to-use graphical programming language with a generative model for 3D space, drawing on ‘turtle geometry,’ a geometry paradigm introduced by Abelson and Disessa, that uses a relative as opposed to an absolute coordinate system. With Beetle Blocks, designers are able to learn computational concepts and use them for their designs with more ease, as individual computational steps are made visually explicit. The beetle, the relative coordinate system, follows instructions as it moves about in 3D space. Anecdotal evidence from studio teaching in undergraduate programs shows that despite the early introduction of digital media and tools, architecture students still struggle with learning formal languages today. Beetle Blocks can significantly simplify the teaching of complex geometric ideas and we explain how this can be achieved via several examples. The blocks-based programming language can also be used to teach fundamental concepts of manufacturing and digital fabrication and we elucidate in this paper which possibilities are conducive for 2D and 3D designs. This project was previously implemented in other languages such as Flash, Processing and Scratch, but is now developed on top of Berkeley’s ‘Snap!’
keywords	generative design, design pedagogy, digital fabrication, tool-building, pedagogical tools
series	ACADIA
type	paper
email
last changed	2022/06/07 07:51

_id	sigradi2013_42
id	sigradi2013_42
authors	Kotsopoulos, Sotirios D.; François Guermeur; Federico Casalegno
year	2013
title	Using Computational Fluid Dynamics to Assess Natural Airflow in a Prototype House-Interior
source	SIGraDi 2013 [Proceedings of the 17th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Chile - Valparaíso 20 - 22 November 2013, pp. 373 - 377
summary	This paper presents an airflow study with Computational Fluid Dynamic (CFD) software that was used to model the natural ventilation attributes at the interior of a prototype house. This study informed the design development phase of the house and guided the design of a dynamic curtain wall involving a matrix of 3 x 9 openable windows for its south façade. Alternative ways of modeling the building geometry were employed and different possible states of the house were examined to determine how change in the orientation and the basic dimensions of the envelope, and modifications in the number, distribution and angle of the open windows affect natural ventilation.
keywords	Performance-based design; Airflow; Computational fluid dynamics; Simulation
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	ecaade03_653_144_koutamanis
id	ecaade03_653_144_koutamanis
authors	Koutamanis, Alexander and Steijns, Yolanda
year	2003
title	Types and precedents in design guidance
doi	https://doi.org/10.52842/conf.ecaade.2003.653
source	Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 653-658
summary	In recent years Dutch secondary education has been undergoing a fundamental change due to the introduction of new didactic approaches which relate strongly to ongoing social and technological developments. This affects existing school buildings, the majority of which is quite conventional in spatial terms and is characterized by limited flexibility and transformability. Consequently, most schools require extensive modifications in their spatial and building structure. The requirements underlying these modifications are not stable. Many schools have become interested in experimental ideas that may require inevitably further changes in the buildings. The paper considers the continuous transformation of Dutch school buildings with respect to their typology: by correlating new design briefs to building types rather than their instances we arrive at general guidelines that can be easily adapted to specific cases. To achieve this, the types are analysed with respect to geometry, topology and zoning. The results of the analysis describe the affordances of each type in terms of general flexibility, transformability and adaptability, as well as in relation to generic briefs. They also provide an explanation of the historical evolution of the types and the means for relating primary characteristics to local configurations, thereby allowing the accurate description of hybrid instances. The descriptions and analysis of buildings are organized into a polyhierarchical multilevel database that supports typological abstraction and offers several starting points (at various abstraction levels) for matching a new brief to an existing building. This enriches the development of the brief or a design solution with explicit, specific information derived from concrete precedents with known form, structure, behaviour and performance.
keywords	Typology, precedence, case-based design, briefing, design information systems
series	eCAADe
email
more	http://www.re-h.nl/transformaties/
last changed	2022/06/07 07:51

_id	62ad
authors	Kuan, L.P. and Hinds, John K.
year	1975
title	A New Breed of Geometry for Numerical Control-Surfaces Through General Curves
source	pp. 133- 169 : ill. (pp.144-169)
summary	Recent geometric developments in the CAM-I Sculptured Surface project show promising applications to the perplexing problems of describing blends and fillets for conventional geometric parts, as well as providing greatly increased capability in the expression of pure sculptured shapes. The new geometry -- named 'Surfaces Through General Curves' -- is integrated into both the APT processor and the CASPA preprocessor. The CASPA (acronym for Computer-Aided Sculptures Pre-APT) processor is discussed briefly. All graphics material for this presentation was prepared through the use of this preprocessor. The original purpose of this talk was to discuss a preprocessor to the APT system. This preprocessor -- CASPA -- was first released in July of 1975 and contains the majority of sculptured geometry combined with a graphics processor. The preprocessor has been a great success as a development tool and has also been used by a number of sponsors in design and manufacturing applications. The system has been so successful that the main theme of this talk had to be changed to cover the new geometric developments in Sculptured Surfaces which were made possible by having a development tool such as CASPA. So the first part of this talk will sketch an outline of CASPA and the second part will describe the concepts and applications for some of these new geometric developments. Briefly, the CASPA system was developed in response to a single critical requirement: the need to have a system, simpler and more flexible then the full APT system, for implementing and testing new developments in Sculptured Geometry. The CASPA system today contains all of the Sculptured Geometric capability together with an integrated and extensive 3-dimensional graphics capability. It is a single-pass processor with a very simple, fixed-format input and interfaces with APT by punching APT- readable canonical forms. it is also capable of generating APT readable 'GOTO' cards to accomplish numerical control pattern machining of geometric models
keywords	curves, curved surfaces, representation, computational geometry, CAM, mechanical engineering
series	CADline
last changed	2003/06/02 13:58

_id	ecaade2013_026
id	ecaade2013_026
authors	Kucukoglu, J. Gozde and Colakoglu, Birgul
year	2013
title	Algorithmic Form Generation for Crochet Technique
doi	https://doi.org/10.52842/conf.ecaade.2013.2.273
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 2, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 273-278
summary	In architecture use of generative computation suggests a possibility of rethinking the form finding process. In order to generate form, one method could be predefining first the production technique and constraining the form by the rules of it. In this study crochet-knitting technique is chosen as a production technique. To explore various forms developed through this technique; a computational model, which the behavior of crochet-knitted surface is embedded into, is developed. This paper explains the process of decoding the behavior of a crochet-knitted surface for a computational model in order to extract the crochet-knitting patterns of complex geometrical surfaces.
wos	WOS:000340643600027
keywords	Form generation; crochet technique; hyperbolic geometry; decoding rule
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ecaade2016_157
id	ecaade2016_157
authors	Kulcke, Matthias and Lorenz, Wolfgang E.
year	2016
title	Utilizing Gradient Analysis within Interactive Genetic Algorithms
doi	https://doi.org/10.52842/conf.ecaade.2016.2.359
source	Herneoja, Aulikki; Toni Österlund and Piia Markkanen (eds.), Complexity & Simplicity - Proceedings of the 34th eCAADe Conference - Volume 2, University of Oulu, Oulu, Finland, 22-26 August 2016, pp. 359-364
summary	The paper describes and discusses the possible integration of gradient analysis, as a method and tool for architects and designers to analyze the degree of proportion-complexity of a design, into the process of designing an object utilizing interactive genetic algorithms (IGA). A VBA implementation for AutoCAD has been developed by the authors, enabling to test the usability of genetic algorithms (GA) for minimizing the angle-redundancy and length-redundancy quotient. The gradient analysis itself has been developed on the basic assumption that the complexity of an objects appearance is reduced by redundancy, which can be measured focussing on different levels of comparison; among others e. g. variety of material, colour-combinations and proportion. The latter comes under scrutiny if the method of gradient analysis is applied.
wos	WOS:000402064400035
keywords	Gradient Analysis; Interactive Genetic Algorithm; Design Complexity; Redundancy; Spatial Analysis; Form and Geometry; Proportion
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ecaade2013_143
id	ecaade2013_143
authors	Kurilla, Lukáš; Achten, Henri and Florián, Miloš
year	2013
title	Scripting Design Supported by Feedback Loop from Structural Analysis
doi	https://doi.org/10.52842/conf.ecaade.2013.1.051
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 1, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 51-59
summary	In order to support an architect’s decision to evaluate and choose more efficient structural solutions in the concept design, it is necessary to establish an interactive feedback loop between structural solver and geometry modeller which would allow one to analyse a great number of solutions generated in the scripting design process. Defining a cross-disciplinary data structure as an analytical model, the communication between existing structural solver (OOFEM) and geometry modeller (Grasshopper) was established. Automation of the entire analysis process was done by the bridging tools MIDAS and Donkey, which have been developed. This paper presents the method of creation of an analytical model by Donkey, and deals with how to visualize, interpret and use the result values from the structural analysis.
wos	WOS:000340635300004
keywords	design tool development; computing design; decision-making support methods; finite element method; cross-disciplinary cooperation.
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ecaade2012_95
id	ecaade2012_95
authors	Ladurner, Georg; Gabler, Markus; Menges, Achim; Knippers, Jan
year	2012
title	Interactive Form-Finding for Biomimetic Fibre Structures: Development of a Computational Design Tool and Physical Fabrication Technique Based on the Biological Structure of the Lichen
doi	https://doi.org/10.52842/conf.ecaade.2012.2.519
source	Achten, Henri; Pavlicek, Jiri; Hulin, Jaroslav; Matejovska, Dana (eds.), Digital Physicality - Proceedings of the 30th eCAADe Conference - Volume 2 / ISBN 978-9-4912070-3-7, Czech Technical University in Prague, Faculty of Architecture (Czech Republic) 12-14 September 2012, pp. 519-529
summary	This contribution shows a biomimetic approach to design and produce fibrous structural elements derived from the morphology of the biologic archetype ‘the lichen’. The physical form fi nding strategy allows for a novel self-organised reinforcement for fibrous composite systems. A computational design tool has been developed, based on the fi ndings of various physical models. The digital device allows for shape control and therefore an interaction to and manipulation of the fabrication process. Since the form fi nding algorithms of the tool are based on physical experiments,every geometry is derived through the program and has its counterpart in production. For example: the fibre density in the model can be adjusted which leads to different geometries. In production the chosen denseness is utilised, thus, the production yields automatically to the desired load-optimized geometry found in the form-finding tool.
wos	WOS:000330320600055
keywords	Biomimetics; Form-finding; Self-organization; Emergence; Fibre structures
series	eCAADe
email
last changed	2022/06/07 07:52

_id	sigradi2020_157
id	sigradi2020_157
authors	Lanzara, Emanuela; Capone, Mara
year	2020
title	Tangential surfaces to optimize digital manufacturing of complex shapes
source	SIGraDi 2020 [Proceedings of the 24th Conference of the Iberoamerican Society of Digital Graphics - ISSN: 2318-6968] Online Conference 18 - 20 November 2020, pp. 157-165
summary	The knowledge of geometric-mathematical rules allows to solve several problems about complex systems design and manufacturing. Geometric genesis of surfaces and their properties represent the main basis to solve both constructive and measurement problems. A developable surface can be manufactured starting from a flat strip, using a flexible and non- deformable material. Geometry studies properties that don't change and, therefore, the shape of the strip to obtain a certain configuration after a series of rigid movements. Our goal is to test different approches (Additive Manufacturing vs Subtractive Manufacturing) to manufacture a lamp using a tangential developable surface.
keywords	Generative design, tangential surfaces, digital fabrication, developable surfaces, Additive Manufacturing, Subtractive Manufacturing
series	SIGraDi
email
last changed	2021/07/16 11:48

_id	acadia12_209
id	acadia12_209
authors	Larsen, Niels Martin ; Pedersen, Ole Egholm ; Pigram, Dave
year	2012
title	A Method for the Realization of Complex Concrete Gridshell Structures in Pre-Cast Concrete
doi	https://doi.org/10.52842/conf.acadia.2012.209
source	ACADIA 12: Synthetic Digital Ecologies [Proceedings of the 32nd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-62407-267-3] San Francisco 18-21 October, 2012), pp. 209-216
summary	This paper describes a method for the design and fabrication of complex funicular structures fromdiscrete precast concrete elements. The research proposes that through the integration of digitalform-finding techniques, computational file-to-fabrication workflows, and innovative sustainableconcrete casting techniques, complex funicular structures can be constructed using prefabricatedelements in a practical, affordable, and materially efficient manner.A recent case study is examined, in which the methodology has been used to construct a pavilion.Custom-written dynamic relaxation software was used to define the overall form and successivealgorithms; it then defined each component’s unique geometry, unrolled into flat shapes, andnested all parts into cut-files. PETG plastic sheets were two-dimensionally laser cut and folded toproduce the unique casting molds. The case study was carried out in collaboration between theAarhus School of Architecture and the University of Technology, Sydney (UTS). Basic research incasting techniques defined the framework for the design process, and a custom-written dynamicrelaxation software application became the primary form-generating tool in the design process ofa constructed pavilion. Fabrication and construction constraints were embedded within the designof both the overall structure and its components. Finite element analysis [FEA] was completed inorder to verify the form-finding results, to ensure structural stability, and to direct adjustments ofthe structure during the design process.The constructed pavilion case study, constructed in a very short time, for low cost and with relativelyunskilled labor, demonstrates that the integration of algorithmic form-finding techniques, CNCfabrication workflows, and the use of innovative PETG folded-mold techniques enables thepractical realization of freeform funicular structures in precast concrete.
keywords	Gridshells , pre-cast concrete , folded moulds , dynamic relaxation , file-to-factory , form-finding , parametric modeling , computational design , zero-waste production
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:52

_id	acadia22pr_190
id	acadia22pr_190
authors	Lasting, Liam; Akbari, Mostafa; Mogas-Soldevila, Laia; Akbarzadeh, Masoud
year	2022
title	Terrene 2.0 - Biomaterial Systems and Shellular Structures for Augmented Earthen Construction
source	ACADIA 2022: Hybrids and Haecceities [Projects Catalog of the 42nd Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 979-8-9860805-7-4]. University of Pennsylvania Stuart Weitzman School of Design. 27-29 October 2022. edited by M. Akbarzadeh, D. Aviv, H. Jamelle, and R. Stuart-Smith. 190-195.
summary	For specific design criteria, rammed earth construction offers solutions as a concrete substitute since it has significantly less embodied energy. However, its typical construction process still utilizes wasteful formwork. Therefore, we propose to augment the principles of rammed earth by integrating renewable additives to improve the mechanical properties of the system towards richer geometry and developing a reusable waste-free formwork.
series	ACADIA
type	project
email
last changed	2024/02/06 14:06

_id	a4b7
authors	Lee, D. T. and Preparata, Franco P.
year	1977
title	Location of a Point in a Planar Subdivision and its Applications
source	SIAM Journal of Computing. September, 1977. vol. 6: pp. 594-606 : ill. includes bibliography
summary	Given a subdivision of the plane induced by a planar graph with n vertices, in this paper the problem of identifying which region of the subdivision contains a given test points is considered. A search algorithm, called point-location algorithm, which operates on a suitably preprocessed data structure is presented. The search runs in time at most O((log n)2), while the preprocessing task runs in time at most O(n log n) and requires O(n) storage. The methods are quite general, since an arbitrary subdivision can be transformed in time at most O(n log n) into one to which the preprocessing procedure is applicable. This solution of the point location problem yields interesting and efficient solutions of other geometric problems, such as spatial convex inclusion and inclusion in an arbitrary polygon
keywords	computational geometry, algorithms, analysis, graphs, point inclusion
series	CADline
last changed	2003/06/02 13:58

_id	61a0
authors	Lee, Philip, Wei, Susanna and Zhao, Jianmin (et al)
year	1990
title	Strength Guided Motion
source	Computer Graphics. ACM, August, 1990. vol. 24: pp. 253-262 : ill. includes bibliography
summary	A methodology and algorithm are presented that generate motion imitating the way humans complete a lifting task under various loading conditions. The path taken depends on 'natural' parameters: the figure geometry, the given load, the final destination, and especially, the strength model of the agent. Additional user controllable parameters of the motion are the comfort of the action and the perceived exertion of the agent. The algorithm uses this information to incrementally compute a motion path of the end-effector moving the load. It is therefore instantaneously adaptable to changing force, loading, and strength conditions. Various strategies are used to model human behavior that compute the driving torques as the situation changes. The algorithm runs in near-real time and offers an agent-dependent toolkit for fast path prediction. Example are presented for various tasks
keywords	algorithms, animation, computer graphics, modeling
series	CADline
last changed	2003/06/02 13:58

_id	4843
authors	Lee, Y.C. and Fu, K.S.
year	1983
title	Integration of Solid Modeling and Data Base Management for CAD/CAM
source	ACM IEEE Design Automation Conference Proceedings (20th : 1983 : Miami Beach, Florida). pp. 367-373 : ill
summary	For the fast growing CAD/CAM technologies, geometric solid modeling plays one of the most important roles. In order to satisfy a variety of engineering applications, an integrated database management system based on solid modeling is highly desirable. In the proposed approach, a concise object representation scheme, Constructive Solid Geometry (CSG), is adopted as the basis for database design. The underlying generic relational model is found to be more adequate than the conventional relational model in characterizing the embedded data abstraction. A systematic method is devised for converting the CSG scheme into a generic model based on the BNF grammar which depicts the CSG scheme. A relational query language, SEQUEL, has been modified to define, control, and manipulate the flat relations which represent the highly structural generic model
keywords	integration, CSG, relational database, management, solid modeling, CAD, CAM
series	CADline
last changed	2003/06/02 13:58

_id	88e0
authors	Lee, Y.T., De Pennington, P. and Shaw, N.K.
year	1984
title	Automatic Finite- Element Mesh Generation from Geometric Models : A Point Based Approach
source	ACM Transactions on Graphics. October, 1984. vol. 3: pp. 287-311 : ill. includes bibliography
summary	A novel algorithm for automatic finite-element mesh generation is described. It uses constructive solid geometry to provide the geometric data for the object to be meshed. The geometric definition of the object and a value for the required mesh density are the only inputs. The method consists of two stages: point generation and mesh construction over the points. It has been implemented in two dimensions and is capable of generating predominantly 'good' quadrilateral elements. Triangular elements are only created in circumstances under which quadrilateral elements are not feasible
keywords	solids, geometric modeling, finite elements, analysis, CSG
series	CADline
last changed	2003/06/02 13:58

_id	2406
authors	Levens, S. A
year	1962
title	Graphics ; with an Introduction to Conceptual Design
source	743 p. : ill. New York: John Wiley & Sons Inc., 1962. includes index
summary	Provides engineering students modern treatment of graphics fundamental principles and applications of orthogonal projection, graphical solutions and computations and an introduction to conceptual design
keywords	computer graphics, conceptual design, drafting, education, projective geometry
series	CADline
last changed	1999/02/12 15:09

_id	888b
authors	Levin, Joshua
year	1976
title	A Parametric Algorithm for Drawing Pictures of Solid Objects Composed of Quadric Surfaces
source	Communications of the ACM. October, 1976. vol. 19: pp. 555- 563. includes bibliography
summary	An algorithm for drawing pictures of three-dimensional objects, with surfaces made up of patches of quadric surfaces, is described. The emphasis of this algorithm is on calculating the intersections of quadric surfaces. A parametrization scheme is used. Each quadric surface intersection curve (QSIC) is represented as a set of coefficients and parameter limits. Each value of the parameter represents at most two points, and these may easily be distinguished. This scheme can find the coordinates of points of even quartic (fourth-order) intersection curves, using equations of no more than second order. Methods of parametrization for each type of QSIC are discussed, as well as surface bounding and hidden surface removal
keywords	algorithms, curves, curved surfaces, intersection, hidden surfaces, parametrization, computational geometry
series	CADline
last changed	1999/02/12 15:09

_id	ga0009
id	ga0009
authors	Lewis, Matthew
year	2000
title	Aesthetic Evolutionary Design with Data Flow Networks
source	International Conference on Generative Art
summary	For a little over a decade, software has been created which allows for the design of visual content by aesthetic evolutionary design (AED) [3]. The great majority of these AED systems involve custom software intended for breeding entities within one fairly narrow problem domain, e.g., certain classes of buildings, cars, images, etc. [5]. Only a very few generic AED systems have been attempted, and extending them to a new design problem domain can require a significant amount of custom software development [6][8]. High end computer graphics software packages have in recent years become sufficiently robust to allow for flexible specification and construction of high level procedural models. These packages also provide extensibility, allowing for the creation of new software tools. One component of these systems which enables rapid development of new generative models and tools is the visual data flow network [1][2][7]. One of the first CG packages to employ this paradigm was Houdini. A system constructed within Houdini which allows for very fast generic specification of evolvable parametric prototypes is described [4]. The real-time nature of the software, when combined with the interlocking data networks, allows not only for vertical ancestor/child populations within the design space to be explored, but also allows for fast "horizontal" exploration of the potential population surface. Several example problem domains will be presented and discussed. References: [1] Alias \| Wavefront. Maya. 2000, http://www.aliaswavefront.com [2] Avid. SOFTIMAGE. 2000, http://www.softimage.com [3] Bentley, Peter J. Evolutionary Design by Computers. Morgan Kaufmann, 1999. [4] Lewis, Matthew. "Metavolve Home Page". 2000, http://www.cgrg.ohio-state.edu/~mlewis/AED/Metavolve/ [5] Lewis, Matthew. "Visual Aesthetic Evolutionary Design Links". 2000, http://www.cgrg.ohio-state.edu/~mlewis/aed.html [6] Rowley, Timothy. "A Toolkit for Visual Genetic Programming". Technical Report GCG-74, The Geometry Center, University of Minnesota, 1994. [7] Side Effects Software. Houdini. 2000, http://www.sidefx.com [8] Todd, Stephen and William Latham. "The Mutation and Growth of Art by Computers" in Evolutionary Design by Computers, Peter Bentley ed., pp. 221-250, Chapter 9, Morgan Kaufmann, 1999.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

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