Cumincad : CUMINCAD Papers : Search Results

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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Reformat results as: short short into frame detailed detailed into frame

_id	acadia18_136
id	acadia18_136
authors	Austern, Guy; Capeluto, Isaac Guedi; Grobman, Yasha Jacob
year	2018
title	Fabrication-Aware Design of Concrete Façade Panels. A Computational Method For Evaluating the Fabrication of Large- Scale Molds in Complex Geometries
source	ACADIA // 2018: Recalibration. On imprecisionand infidelity. [Proceedings of the 38th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-17729-7] Mexico City, Mexico 18-20 October, 2018, pp. 136-145
doi	https://doi.org/10.52842/conf.acadia.2018.136
summary	This paper presents a design methodology for concrete façade panels that takes into consideration constraints related to digital fabrication machinery. A computational method for the real-time evaluation of industrial mold-making techniques, such as milling and hot wire cutting, was developed. The method rapidly evaluates the feasibility, material use, and machining time of complex geometry molds for architectural façade elements. Calculation speed is achieved by mathematically approximating CAM-machining operations. As results are obtained in nearly real time, the method can be easily incorporated into the architectural design process during its initial stages, when changes to the design are more effective. In the paper, we describe the algorithms of the computational evaluation method. We also show how it can be used to introduce fabrication considerations into the design process by using it to rationalize several types of panels. Additionally, we demonstrate how the method can be used in complex, large-scale architectural projects to save machining time and materials by evaluating and altering the paneling subdivision.
keywords	full paper, fabrication & robotics, digital fabrication, performance + simulation, geometry
series	ACADIA
type	paper
email
last changed	2022/06/07 07:54

_id	ecaade2024_298
id	ecaade2024_298
authors	Avellaneda Lopez, Omar Fabrisio; Christodoulou, Marilena; Mendoza, Marisela
year	2024
title	Parametric Design and Geometric Optimization for Deployable Domes Based on the icosahedron frequency with hexagonal modules
source	Kontovourkis, O, Phocas, MC and Wurzer, G (eds.), Data-Driven Intelligence - Proceedings of the 42nd Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2024), Nicosia, 11-13 September 2024, Volume 1, pp. 411–420
doi	https://doi.org/10.52842/conf.ecaade.2024.1.411
summary	The systems of deployable structures domes with straight bars are directly related to the geometry of solids. They are lightweight, modular, and transformable systems. This research relates to the design of deployable structures with articulated straight bars, with the purpose of being habitable and offering a solution to the light and traditional architecture. In particular, it refers to the design of deployable domes with articulated straight bars, starting from the transformation of the icosahedron using deployable hexagonal modules. With the possibility of changing its scale when increasing its frequency. In addition, has aims at a parametric design method for deployable domes or shells with straight bars of equal articulated dimension, stabilized with a flexible or rigid architectural covering. The process is defined as quick assembly. The optimization method employed is based on transforming the icosahedron and varying its frequencies. The process consists of optimizing deployable hexagonal modules with bars of equal length following geodesic patterns. Using visual programming algorithms using Rhinoceros + Grasshopper, geometric optimization results are achieved with deployable hexagonal modules applied to different dome frequencies. The system offers efficient solutions to temporary shelters, portable greenhouses, scenarios for medium and large-scale events, and everything related to light and transformable architecture.
keywords	Deployable Structures, Geometric Optimization, Parametric Design, Lightweight Structures
series	eCAADe
email
last changed	2024/11/17 22:05

_id	acadia08_292
id	acadia08_292
authors	Celento, David; Del Harrow
year	2008
title	ceramiSKIN: Digital Possibilities for Ceramic Cladding Systems
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 292-299
doi	https://doi.org/10.52842/conf.acadia.2008.292
summary	CeramiSKIN is an inter-disciplinary investigation by an architect and a ceramics artist examining new possibilities for ceramic cladding using digital design and digital fabrication techniques. Research shown is part of an ongoing collaborative residency at The European Ceramics Work Centre. ¶ Ceramics are durable, sustainable, and capable of easily assuming detailed shapes with double curvature making ceramics seemingly ideal for digitally inspired “plastic” architecture. The primary reason for the decline in complex ceramic cladding is that manual mold-making is time-consuming—which is at odds with today’s high labor costs and compressed construction timeframes. We assert that digital advances in the area of mold-making will assist in removing some of the barriers for the use of complex ceramic cladding in architecture. ; The primary goals of ceramiSKIN as they relate to digitally assisted production are: greater variety and complexity, reduced cost and time, a higher degree of accuracy, and an attempt to facilitate a wider range of digital design possibilities through the use of a ceramics in architectural cladding systems. ¶ The following paper begins with an overview discussing double curvature and biophilia in architecture and their relationship to ceramics. This is followed by detailed commentary on three different experiments prior to a concluding summary.
keywords	Biomorphic; Collaboration; Complex Geometry; Digital Fabrication; Skin
series	ACADIA
last changed	2022/06/07 07:55

_id	ecaade2011_020
id	ecaade2011_020
authors	de la Barrera Poblete, Carlos Ignacio
year	2011
title	Evolutionary Strategy to Design Optimized Architecture
source	RESPECTING FRAGILE PLACES [29th eCAADe Conference Proceedings / ISBN 978-9-4912070-1-3], University of Ljubljana, Faculty of Architecture (Slovenia) 21-24 September 2011, pp.293-301
doi	https://doi.org/10.52842/conf.ecaade.2011.293
wos	WOS:000335665500033
summary	The purpose of the present experiment consists in optimizing a building modifying its apertures (windows) and its geometry to reduce heating and air conditioning consumption. The optimization is performed using a Micro-Genetic Algorithm (Micro-GAs) programmed in C# embedded like a series of functions into GenerativeComponents (GC). EnergyPlus (E+) software is used to evaluate the HVAC consumption levels of the building. The aim of the optimization is to keep the temperature at 20ºC on the hottest and coldest day using the least possible energy (Jules). In conclusion, this article proposes a new technique based on parametric modelling, evaluation and evolutionary optimization to generate efficient buildings with HVAC consumptions.
keywords	Optimization; Parametric design; Genetic Algorithms; Energy Consumption; Architecture
series	eCAADe
email
last changed	2022/05/01 23:21

_id	ecaade03_473_175_flanagan_neu
id	ecaade03_473_175_flanagan_neu
authors	Flanagan, Robert H.
year	2003
title	Generative Logic in Digital Design
source	Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 473-484
doi	https://doi.org/10.52842/conf.ecaade.2003.473
summary	This exploration of early-stage, architectural design pedagogy is in essence, a record of an ongoing transformation underway in architecture, from its practice in the art of geometry of space to its practice in the art of geometry of space-time. A selected series of student experiments, from 1992 to the present, illustrate a progression in architectural theory, from Pythagorean concepts of mathematics and geometry, to the symbolic representation of space and non-linear time in film. The dimensional expansion of space, from xyz to xyz+t (time), represents a tactical and strategic opportunity to incorporate multisensory design variables in architectural practice, as well as in its pedagogy.
keywords	Generative; process; derivative; logic; systemic
series	eCAADe
email
last changed	2022/06/07 07:51

_id	ascaad2023_082
id	ascaad2023_082
authors	Georgiou, Michail; Georgiou, Odysseas; Georgiou, Ioulios; Efthimiou, Eftihis
year	2023
title	Reverse Engineering Construction Industry Realities: Repurposing Standardized Leftover Materials for Digital Fabrication
source	C+++: Computation, Culture, and Context – Proceedings of the 11th International Conference of the Arab Society for Computation in Architecture, Art and Design (ASCAAD), University of Petra, Amman, Jordan [Hybrid Conference] 7-9 November 2023, pp. 382-398.
summary	The paper investigates the appropriateness of computational design tools and affordable registration processes for repurposing standardized construction industry leftover materials of variable geometry for subtractive digital fabrication. Through the analysis and discussion of four case studies the authors propose discrete steps towards streamlining a workflow that can help reduce waste, promote sustainable practices and potentially create new revenue streams for the industry.
series	ASCAAD
email
last changed	2024/02/13 14:40

_id	sigradi2006_e028c
id	sigradi2006_e028c
authors	Griffith, Kenfield; Sass, Larry and Michaud, Dennis
year	2006
title	A strategy for complex-curved building design:Design structure with Bi-lateral contouring as integrally connected ribs
source	SIGraDi 2006 - [Proceedings of the 10th Iberoamerican Congress of Digital Graphics] Santiago de Chile - Chile 21-23 November 2006, pp. 465-469
summary	Shapes in designs created by architects such as Gehry Partners (Shelden, 2002), Foster and Partners, and Kohn Peterson and Fox rely on computational processes for rationalizing complex geometry for building construction. Rationalization is the reduction of a complete geometric shape into discrete components. Unfortunately, for many architects the rationalization is limited reducing solid models to surfaces or data on spread sheets for contractors to follow. Rationalized models produced by the firms listed above do not offer strategies for construction or digital fabrication. For the physical production of CAD description an alternative to the rationalized description is needed. This paper examines the coupling of digital rationalization and digital fabrication with physical mockups (Rich, 1989). Our aim is to explore complex relationships found in early and mid stage design phases when digital fabrication is used to produce design outcomes. Results of our investigation will aid architects and engineers in addressing the complications found in the translation of design models embedded with precision to constructible geometries. We present an algorithmically based approach to design rationalization that supports physical production as well as surface production of desktop models. Our approach is an alternative to conventional rapid prototyping that builds objects by assembly of laterally sliced contours from a solid model. We explored an improved product description for rapid manufacture as bilateral contouring for structure and panelling for strength (Kolarevic, 2003). Infrastructure typically found within aerospace, automotive, and shipbuilding industries, bilateral contouring is an organized matrix of horizontal and vertical interlocking ribs evenly distributed along a surface. These structures are monocoque and semi-monocoque assemblies composed of structural ribs and skinning attached by rivets and adhesives. Alternative, bi-lateral contouring discussed is an interlocking matrix of plywood strips having integral joinery for assembly. Unlike traditional methods of building representations through malleable materials for creating tangible objects (Friedman, 2002), this approach constructs with the implication for building life-size solutions. Three algorithms are presented as examples of rationalized design production with physical results. The first algorithm [Figure 1] deconstructs an initial 2D curved form into ribbed slices to be assembled through integral connections constructed as part of the rib solution. The second algorithm [Figure 2] deconstructs curved forms of greater complexity. The algorithm walks along the surface extracting surface information along horizontal and vertical axes saving surface information resulting in a ribbed structure of slight double curvature. The final algorithm [Figure 3] is expressed as plug-in software for Rhino that deconstructs a design to components for assembly as rib structures. The plug-in also translates geometries to a flatten position for 2D fabrication. The software demonstrates the full scope of the research exploration. Studies published by Dodgson argued that innovation technology (IvT) (Dodgson, Gann, Salter, 2004) helped in solving projects like the Guggenheim in Bilbao, the leaning Tower of Pisa in Italy, and the Millennium Bridge in London. Similarly, the method discussed in this paper will aid in solving physical production problems with complex building forms. References Bentley, P.J. (Ed.). Evolutionary Design by Computers. Morgan Kaufman Publishers Inc. San Francisco, CA, 1-73 Celani, G, (2004) “From simple to complex: using AutoCAD to build generative design systems” in: L. Caldas and J. Duarte (org.) Implementations issues in generative design systems. First Intl. Conference on Design Computing and Cognition, July 2004 Dodgson M, Gann D.M., Salter A, (2004), “Impact of Innovation Technology on Engineering Problem Solving: Lessons from High Profile Public Projects,” Industrial Dynamics, Innovation and Development, 2004 Dristas, (2004) “Design Operators.” Thesis. Massachusetts Institute of Technology, Cambridge, MA, 2004 Friedman, M, (2002), Gehry Talks: Architecture + Practice, Universe Publishing, New York, NY, 2002 Kolarevic, B, (2003), Architecture in the Digital Age: Design and Manufacturing, Spon Press, London, UK, 2003 Opas J, Bochnick H, Tuomi J, (1994), “Manufacturability Analysis as a Part of CAD/CAM Integration”, Intelligent Systems in Design and Manufacturing, 261-292 Rudolph S, Alber R, (2002), “An Evolutionary Approach to the Inverse Problem in Rule-Based Design Representations”, Artificial Intelligence in Design ’02, 329-350 Rich M, (1989), Digital Mockup, American Institute of Aeronautics and Astronautics, Reston, VA, 1989 Schön, D., The Reflective Practitioner: How Professional Think in Action. Basic Books. 1983 Shelden, D, (2003), “Digital Surface Representation and the Constructability of Gehry’s Architecture.” Diss. Massachusetts Institute of Technology, Cambridge, MA, 2003 Smithers T, Conkie A, Doheny J, Logan B, Millington K, (1989), “Design as Intelligent Behaviour: An AI in Design Thesis Programme”, Artificial Intelligence in Design, 293-334 Smithers T, (2002), “Synthesis in Designing”, Artificial Intelligence in Design ’02, 3-24 Stiny, G, (1977), “Ice-ray: a note on the generation of Chinese lattice designs” Environmental and Planning B, volume 4, pp. 89-98
keywords	Digital fabrication; bilateral contouring; integral connection; complex-curve
series	SIGRADI
email
last changed	2016/03/10 09:52

_id	caadria2020_100
id	caadria2020_100
authors	Hershcovich, Cheli, van Hout, RENÃ‰, Rinsky, Vladislav, Laufer, Michael and Grobman, Yasha J.
year	2020
title	Insulating with Geometry - Employing Cellular Geometry to Increase the Thermal Performance of Building Facades
source	D. Holzer, W. Nakapan, A. Globa, I. Koh (eds.), RE: Anthropocene, Design in the Age of Humans - Proceedings of the 25th CAADRIA Conference - Volume 1, Chulalongkorn University, Bangkok, Thailand, 5-6 August 2020, pp. 507-516
doi	https://doi.org/10.52842/conf.caadria.2020.1.507
summary	This paper presents the current stage of a study examining the potential of complex geometry concrete tiles to improve thermal performance in building envelopes. This stage focused on developing tile geometries and testing them using physical and digital CFD (Computational Fluid Dynamics) simulations. Tiles were developed taking two approaches: (i) developing variation from basic geometries (triangle, square, circle and trapezoid) and (ii) learning from natural envelopes. Following successful validation of experimental and numerical data, the designed tiles were tested using a digital simulation (Star-CCM+). The results show that for the examined configuration (flow perpendicular to the surface), a significant reduction of heat transfer rate occurs in most of the tested tiles. Furthermore, geometries that achieved the same thermal performance as the base-line flat tile saved up to 38 percent of the material.
keywords	Complex Geometry; Microclimate; CFD
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	1955
authors	Hoffmann, C.M. and Vanecek, G.
year	1990
title	Fundamental techniques for geometric and solid modeling
source	Manufacturing and Automation Systems: Techniques and Technologies, no. 48, pp. 347-356
summary	nD skeletons as the discontinuities of the graph of the distance map in (n+1)D space. Cyclographic map of Descriptive Geometry (generates the ruled & developable surface); its discontinuities form the skeleton. Relation with the Hamilton-Jacobi equation. The shocks of this PDE correspond to the skeleton.
series	journal paper
last changed	2003/05/15 21:22

_id	acadia18_126
id	acadia18_126
authors	Johns, Ryan Luke; Anderson, Jeffrey
year	2018
title	Interfaces for Adaptive Assembly
source	ACADIA // 2018: Recalibration. On imprecisionand infidelity. [Proceedings of the 38th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-17729-7] Mexico City, Mexico 18-20 October, 2018, pp. 126-135
doi	https://doi.org/10.52842/conf.acadia.2018.126
summary	While robotic tools have greatly expanded the scope of computational control and design freedom in architectural assembly, the vast majority of projects involving robotic customization depend on standardized, mass produced components. By relinquishing some design agency to automated systems which respond to on-site material variations, it is possible to produce methods of construction which rely on locally-sourced components with low embodied energy. Such adaptive automation can provide resource efficiency and the aesthetic advantages of natural or reclaimed materials, but can also beget technical challenges of increasing complexity. By expanding design goals to incorporate intuitive collaborative interfaces, technical gaps can be understood even by non-experts, and leveraged towards new forms of creative expression. This paper presents the results of an interactive installation in which visitors can provide any variety of objects to a collaborative robotic manipulator (UR5) which recognizes part geometry and attempts to construct a dry-stacked wall from the material offerings. A visual and auditory interface provides suggestions and error messages to participants to facilitate an understanding of the acceptable material morphologies which can be used within the constraints of the system.
keywords	full paper, materials & adaptive systems, non-production robotics, digital materials, representation + perception
series	ACADIA
type	paper
email
last changed	2022/06/07 07:52

_id	acadia08_472
id	acadia08_472
authors	Key, Sora; Mark D Gross; Ellen Yi-Luen Do
year	2008
title	Computing Spatial Qualities For Architecture
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 472-477
doi	https://doi.org/10.52842/conf.acadia.2008.472
summary	Computational representation of spatial qualities can lead us to a better understanding of how we construct spatial concepts. Analyses of spatial qualities can support architects in reasoning about the form of a configuration, helping them predict the consequences of a design. ¶ In this paper we present three definitions (enclosure, viewfield, continuity) that describe experiential qualities of architectural spaces. Our project aims to provide computable definitions to these qualities to describe common spatial experiences that are implicitly understood by architects. The description, using familiar terms, reveals the analytical structure of spatial qualities that is based on the geometry of the physical elements. ; We therefore introduce a graphic editor, Descriptor, that provides visualization of spatial qualities as the designer diagrams building elements. The system calculates perceived relationships (surrounded, visible, nearby, nearest) between a viewpoint and the architectural elements based on their geometric properties such as location and distance. The relationships are the components of the three qualities we define. We also present a use scenario to demonstrate how one might use our Descriptor system during early design. ¶ Descriptor is an attempt to formalize descriptions of the spatial qualities to help beginners understand how to make design decisions. In the future, we plan to extend the set of qualities and add detailed attributes of the physical elements to the system.
keywords	Analysis; Computation; Environment; Representation; Spatial
series	ACADIA
last changed	2022/06/07 07:52

_id	cf2009_771
id	cf2009_771
authors	LaBelle, Guillaume; Nembrini, Julien and Huang, Jeffrey
year	2009
title	Programming framework for architectural design ANAR+: Object oriented geometry
source	T. Tidafi and T. Dorta (eds) Joining Languages, Cultures and Visions: CAADFutures 2009, PUM, 2009, pp. 771- 785
summary	From the recent advent of scripting tools integrated into commercial CAAD software and everyday design practice, the use of programming applied to an architectural design process becomes a necessary field of study. The presented research explores the use of programming as explorative and reflexive medium (Schön, 1983) through the development of a programming framework for architectural design. Based on Java, the ANAR+ library is a parametric geometry environment meant to be used as programming interface by designers. Form exploration strategies based on parametric variations depend on the internal logic description, a key role for form generation. In most commercial CAD software, geometric data structures are often predefined objects, thus constraining the form exploration, whereas digital architectural research and teaching are in need for an encompassing tool able to step beyond new software products limitations.
keywords	Parametric design, programming language, architectural Geometry, pro-cessing
series	CAAD Futures
email
last changed	2009/06/08 20:53

_id	ecaade2010_142
id	ecaade2010_142
authors	Labelle, Guillaume; Nembrini, Julien; Huang, Jeffrey
year	2010
title	Geometric Programming Framework: ANAR+: Geometry library for Processing
source	FUTURE CITIES [28th eCAADe Conference Proceedings / ISBN 978-0-9541183-9-6] ETH Zurich (Switzerland) 15-18 September 2010, pp.403-410
doi	https://doi.org/10.52842/conf.ecaade.2010.403
wos	WOS:000340629400043
summary	This paper introduces a JAVA based library for parametric modeling through programming. From the recent advent of scripting tools integrated into commercial CAAD software and everyday design practice, the use of programming applied to an architectural design process becomes a necessary field of study. The ANAR+ library is a parametric geometry environment meant to be used as programming interface by designers. Form exploration strategies based on parametric variations depends on the internal logic description, a key role for form generation. In most commercial CAD software, geometric data structures are often predefined objects, thus constraining the form exploration, whereas digital architectural research and teaching are in need for an encompassing tool able to step beyond new software products limitations. We introduce key concepts of the library and show a use of the library within a form finding process driven by irradiance simulation.
keywords	Processing; JAVA; Scene graph; Parametric modeling; Geometry
series	eCAADe
email
last changed	2022/06/07 07:52

_id	67c9
authors	Lipski, Witold Jr. and Preparata, Franco P.
year	1980
title	Finding the Contour of a Union of Iso-Oriented Rectangles
source	Journal of Algorithms. Academic Press Inc., January, 1980. pp. 235-246 : some ill. a short bibliography
summary	In this paper the following geometric problem is considered. Let R1,...,Rm be rectangles on the plane with sides parallel to the coordinate axes. An algorithm is described for finding the contour of F = R1, U...U Rm, in O(m log m+p log(2m2/p)) time, where p is the number of edges in the contour. This is O(m2) in the general case, and o(m log m) when F is without holes (then p < 8m - 4); both of these performances are optimal
keywords	rectangles, geometry, computational geometry, algorithms
series	CADline
last changed	2003/06/02 10:24

_id	ascaad2023_069
id	ascaad2023_069
authors	lºbilir, Sümeyye
year	2023
title	A Method Proposal for 3D Digital Modelling of Historical Ottoman Fountains
source	C+++: Computation, Culture, and Context – Proceedings of the 11th International Conference of the Arab Society for Computation in Architecture, Art and Design (ASCAAD), University of Petra, Amman, Jordan [Hybrid Conference] 7-9 November 2023, pp. 90-108.
summary	Historical buildings are in critical position in terms of heritage value with their role in examination and preservation of urban culture and identity. Historical buildings are affected by changes in physical and social environment. Consequently, they face risks such as deformation and destruction. Considering that documentation of historical buildings provides contributions to research, conservation and restoration studies. Fountains, public elements of Ottoman civil architecture, hold significant positions in cultural and architectural heritage. Creation of 3D digital models of Ottoman fountains will also make significant contributions to studies. This study aims to search for method for 3D digital modelling of Ottoman fountains through example of III. Ahmed Fountain. Ottoman fountains contain common characteristics and typological elements coming from construction period, location and architectural style. This study presents modelling method combines multiple techniques for 3D digital modelling of fountains, due to inadequacy of single modelling method in conveying details, and applicability of chosen method to digital modelling process of fountains with different characteristics. In this study, research was carried out on different modelling methods to create most detailed and accurate model. Fountain elements are classified into three subgroups as main mass, details and regular elements to apply most appropriate modelling methods. Main mass was shaped on Rhinoceros using geometry-based modelling method, while ornaments in regular elements group were created in Grasshopper with parametric modelling. Detail elements were created in Agisoft Metashape with photogrammetric modelling to convey in detail. This study presents gradual method proposal with multiple techniques but also tries to include suggestions for problems encountered in modelling process of historical buildings. In this context, texture and geometry deformations in scanning models were corrected with ZBrush, and color differences caused by effect of light and shadow were tried to be solved by creating new texture maps on Adobe Substance 3D Sampler.
series	ASCAAD
email
last changed	2024/02/13 14:40

_id	ddssar0222
id	ddssar0222
authors	Mahdavi, Ardeshir and Gurtekin, Beran
year	2002
title	Shapes, Numbers, Perception: Aspects and Dimensions of the Design-Performance Space
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary	The design-performance space denotes a virtual space that can be constructed based on discretized design variables and performance indicators. For an n-dimensional design-performance space, n = d + p,whereby d = the number of discrete design variables, and p = the number of discrete performance indicators. Once constructed, this space can be visualized and used by the designer to explore the relationship between design variables and corresponding performance attributes. We present, for the building design domain, an approach to generation and exploration of the design-performance space. In this approach, an initial design is used to generate a set of alternative designs that collectively constitutethe design space. One way of doing this relies on the "scalarization" of design variables. The scalarization leads to the representation of a building as a point in a d-dimensional design space. Each coordinate ofsuch a space accommodates a salient (semantic or geometric) design variable. Subsequently, the entire corpus of design alternatives is subjected to performance modeling. Based on the modeling results, an ndimensionaldesign-performance space is constructed. We specifically address the potential for and limitations of describing building geometry in terms of a continuous scalar dimension of the design space. We introduce the concept of "Relative Compactness", which is derived by comparing the volume tosurface area ratio of a shape to that of a (compact) reference shape with the same volume. We present the results of an empirical study, which shows a significant correlation between the numeric values of relativecompactness and the subjective evaluation of the compactness of architectural shapes.
keywords	Buildings, design, performance, simulation, geometry
series	DDSS
last changed	2003/08/07 16:36

_id	29f0
authors	Maver, T.W.
year	1987
title	Modelling the Cityscape with Geometry Engines
source	Computer Aided Design, vol 19, No 4, 193-196 (+ colour plates)
series	journal paper
email
last changed	2003/06/02 15:00

_id	2415
authors	Nievergelt, J. and Preparata, Franco P.
year	1982
title	Plane-Sweep Algorithms for Intersecting Geometric Figures
source	Communications of the ACM. October, 1982. vol. 25: pp. 739-747 : ill. includes bibliography
summary	Algorithms in computational geometry are of increasing importance in computer-aided design, for example, in the layout of integrated circuits. The efficient computation of the intersection of several superimposed figures is a basic problem. Plane figures defined by points connected by straight line segments are considered, for example, polygons (not necessarily simple) and maps (embedded planar graphs). The regions into which the plane is partitioned by these intersecting figures are to be processed in various ways such as listing the boundary of each region in cyclic order or sweeping the interior of each region. Let m be the total number of points of all the figures involved and s be the total number of intersections of all line segments. A two plane-sweep algorithm that solves the problems above is presented; in the general case (non convexity) in time O((n+s)log-n) and space O(n+s); when the regions of each given figure are convex, the same can be achieved in time O(n log n +s) and space O(n)
keywords	computational geometry, algorithms, intersection, mapping, polygons, data structures, analysis
series	CADline
last changed	2003/06/02 10:24

_id	acadia11_284
id	acadia11_284
authors	Ogrydziak; Luke
year	2011
title	Tetrahedron Cloud
source	ACADIA 11: Integration through Computation [Proceedings of the 31st Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA)] [ISBN 978-1-6136-4595-6] Banff (Alberta) 13-16 October, 2011, pp. 284-291
doi	https://doi.org/10.52842/conf.acadia.2011.284
summary	The research project, tetrahedron cloud, explores agent-based stochastic behavior as a design tool. It investigates the possibilities for producing volumetric tetrahedral meshes based on the interactions of individual stochastic agents. The research situates itself at the intersection of the visual arts, the physical sciences, and computer science. The basic interest in stochastics comes from the visual arts; the growth simulation approach is borrowed from the natural sciences; and the use of a tetrahedral mesh within C++ comes from computer science. But more generally, the project focuses on architecture’s ongoing engagement with stochastic systems. By embedding extremely specific tendencies within an agent’s behavior, while also allowing for stochastic variation, we can create larger systems that are both in and out of our “control”. This sidesteps the typical limitations of many computational geometry and parametric methods, where there is often an overly deterministic relationship between the input and output of a given system. Such a shift from optimization to behavior inevitably brings up troubling questions of style. Abandoning the search for a “best” solution, or even the articulation of the criteria for such a task, re-opens computational architecture at its deepest levels as a site for design speculation.
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:58

_id	acadia07_074
id	acadia07_074
authors	Peters, Brady
year	2007
title	The Smithsonian Courtyard Enclosure: A Case-Study of Digital Design Processes
source	Expanding Bodies: Art • Cities• Environment [Proceedings of the 27th Annual Conference of the Association for Computer Aided Design in Architecture / ISBN 978-0-9780978-6-8] Halifax (Nova Scotia) 1-7 October 2007, 74-83
doi	https://doi.org/10.52842/conf.acadia.2007.074
summary	This paper outlines the processes involved in the design of the Smithsonian Institution’s Patent Office Building’s new courtyard enclosure. In 2004, Foster + Partners won an invited international competition to design the new courtyard enclosure in Washington, D.C. Early in the project, the Specialist Modelling Group (SMG), an internal research and design consultancy, was brought in to advise the project team on computer modelling techniques, develop new digital design tools, and help solve the complex geometric issues involved. Throughout the project, computer programming was used as one of the primary tools to explore design options. The design constraints were encoded within a system of associated geometries. This set-out geometry performed as a mechanism to control the parameters of a generative script. The design evolution involved the use of many different media and techniques and there was an intense dialog between a large team and many consultants. The computer script was a synthesis of the design ideas and was constantly modified and adapted during the design process. The close collaboration between architects, consultants, and fabricators was of key importance to the success of the project. This project, now named The Robert and Arlene Kogod Courtyard, will complete in late 2007.
series	ACADIA
email
last changed	2022/06/07 08:00

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