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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_id	c3a7
authors	Beck, Clyde B.
year	1972
title	The Apple, Core of a Drafting System
source	computer Graphics World. March, 1972. vol. 5: pp.68-69
summary	Since a small architecture firm can not afford a big computing system, what is needed is some kind of a computer- aided drafting system that a small firm could afford, which would increase productivity and be readily understood by drafting technicians. The system must be built around a microcomputer. The author takes the Apple II and builds around it his system. The article discusses hardware and software of this project
keywords	architecture, CAD, practice, drafting, hardware, software
series	CADline
last changed	2003/06/02 10:24

_id	893f
authors	Forrest, Robin A.
year	1972
title	Mathematical Principles for Curve and Surface Representation
source	Curved Surfaces in Engineering, Conference proceedings. March, 1972. pp. 5-13 : ill. include bibliography
summary	There are many ways in which curves and surfaces may be represented mathematically. This paper discusses some methods which are appropriate for computer-aided design and provides a semi-formal structure within which comparisons may be made. The subject is approached from the point of view of computational geometry - a blend of differential geometry, approximation theory, computer science and other disciplines
keywords	curves, curved surfaces, representation, CAD, computational geometry
series	CADline
last changed	2003/06/02 10:24

_id	caadria2021_233
id	caadria2021_233
authors	Ascoli, RaphaÃ«l
year	2021
title	Augmenting computational design agency in emerging economies
doi	https://doi.org/10.52842/conf.caadria.2021.2.639
source	A. Globa, J. van Ameijde, A. Fingrut, N. Kim, T.T.S. Lo (eds.), PROJECTIONS - Proceedings of the 26th CAADRIA Conference - Volume 2, The Chinese University of Hong Kong and Online, Hong Kong, 29 March - 1 April 2021, pp. 639-648
summary	This /practice-based design research/ investigates the possibility of computational design to increase agency and impact in emerging economies through real-world projects. By cultivating a new kind of relationship to issues in development and local untapped resources, they inspire for more public engagement and resource-based conversations within a spatial framework. The topics that were addressed in this research are the democratization of data and affordability of construction. These two on-going early-stage initiatives have used computational design tools at specific areas in the projects development, therefore optimizing the parts where low-tech tools werent sufficient. This demand driven design process explores ways in which different levels of technology can augment each other.
keywords	space; resource; housing; myanmar; optimization
series	CAADRIA
email
last changed	2022/06/07 07:54

_id	caadria2021_415
id	caadria2021_415
authors	Chuang, Cheng-Lin and Chien, Sheng-Fen
year	2021
title	Facilitating Architect-Client Communication in the Pre-design Phase
doi	https://doi.org/10.52842/conf.caadria.2021.2.071
source	A. Globa, J. van Ameijde, A. Fingrut, N. Kim, T.T.S. Lo (eds.), PROJECTIONS - Proceedings of the 26th CAADRIA Conference - Volume 2, The Chinese University of Hong Kong and Online, Hong Kong, 29 March - 1 April 2021, pp. 71-80
summary	The process of architects exploring the program with clients often take place through face-to-face oral discussions and visual aids, such as photos and sketches. Our research focuses on two communication mediums: language and sketch. We employ machine learning techniques to assist architects and clients to improve their communication and reduce misunderstandings. We have trained a Naive Bayesian Classifier machine, the language assistant (LA), to classify architectural vocabularies with associations to design requirements. In addition, we have trained a Generative Adversarial Network, the sketch assistant (SA), to generate photo quality images based on architects' sketches. The language assistant and sketch assistant combined can facilitate architect-client communication during the pre-design stage.
keywords	Architect-Client Communication; Pre-design; Architectural Programming; Machine Learning; Schematic Design
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	c7ac
authors	Hardwick, Martin and Spooner, David L.
year	1987
title	Comparison of Some Data Models for Engineering Objects
source	IEEE Computer Graphics and Applications. March, 1987. vol. 7: pp. 56-66 : ill. includes bibliography
summary	Many proposals using object-oriented data models for engineering objects have appeared in the literature. These data models try to represent the data in engineering systems more naturally by organizing it logically and/or physically into objects relevant to the engineering applications using the database. The article reviews and examines several of these proposed data models to identify important properties of the models. It shows that none of the data models excels in all areas, but each has desirable properties
keywords	objects, CAD, design, database, representation, modeling
series	CADline
last changed	2003/06/02 13:58

_id	caadria2023_177
id	caadria2023_177
authors	Khajehee, Arastoo, Ikeda, Yasushi and García del Castillo y López, Jose Luis
year	2023
title	RemoSharp: Exploring Solutions for Remote Real-Time Collaboration in Computational Design
doi	https://doi.org/10.52842/conf.caadria.2023.1.443
source	Immanuel Koh, Dagmar Reinhardt, Mohammed Makki, Mona Khakhar, Nic Bao (eds.), HUMAN-CENTRIC - Proceedings of the 28th CAADRIA Conference, Ahmedabad, 18-24 March 2023, pp. 443–452
summary	Parametric Design and Fabrication are highly collaborative fields. In most projects, many people are involved with different backgrounds, skill levels, and scripting methods. The collaboration platforms currently available for these fields are primarily cross-software frameworks. They seem to miss out on the nuances of parametric design thinking, namely, focusing on the "how" rather than the "what" in creative projects. In addition, this research identifies "lack of real-time communication" as the most problematic issue with collaborative projects in Parametric Design and Digital Fabrication. This paper introduces "RemoSharp" as a platform for remote interactive collaboration in parametric modeling. This research provides qualitative and quantitative case studies that showcase the capabilities of RemoSharp as a tool for remote interactive collaboration. We demonstrate how users with different skill sets can interactively participate in projects, providing evidence ofhow RemoSharp may encourage modes of communication that improve group work in parametric design workflows. Altogether, this research showcases how RemoSharp provides a generalizable solution for remote collaboration in computational design and digital fabrication.
keywords	Remote Collaboration, Human-Human Interaction, Real-Time Communication, Computational Design, Communication Tools
series	CAADRIA
email
last changed	2023/06/15 23:14

_id	ab39
authors	Kutay, Ali R.
year	1982
title	Abstractions and Transactions : A Solution for Structuring Complex Applications
source	March, 1982. [1] l, 14 p. includes bibliography
summary	In database systems when large applications are supported, their representation becomes a problem. A proposed model is to use the transaction concept and structure a large application as a nested transaction. This paper proposes to take advantage of abstraction techniques to avoid problems related to nested transactions. It first reviews the transition concept and restates the shortcomings. It then briefly states the available abstraction techniques in databases. It proposes to integrate transactions with abstraction levels and provide communication between the transactions instead of nesting them. It is argued that such a solution presents a better structure for applications and possible integration with abstract data types
keywords	abstraction, relational database, building
series	CADline
last changed	2003/06/02 13:58

_id	caadria2006_553
id	caadria2006_553
authors	MARY LOU MAHER, ZAFER BILDA, LEMAN FIGEN GÜL, DAVID MARCHANT
year	2006
title	STUDYING COLLABORATIVE DESIGN IN FACE TO FACE, REMOTE SKETCHING, AND 3D VIRTUAL WORLD ENVIRONMENTS
doi	https://doi.org/10.52842/conf.caadria.2006.x.j4o
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 553-555
summary	The impact of collaborative design in virtual environments on the behaviour of designers depends on the nature of the design task and the resources available to the designers. By introducing new technology, we can identify the kinds of positive impacts that should be integrated, and the kinds of negative impacts that should be eliminated, in order to improve the collaborative design environment. We studied designers collaborating in three environments: (1) face-to-face with their current design and communication tools (pen and paper), (2) a shared remote drawing system (Group Board) with synchronous voice and video conference and (3) a 3D virtual world with synchronous voice and video conference. Collaborative design sessions of 5 architect pairs were video recorded. They respectively worked on separate design briefs in the three different design settings. Protocol analysis was used to study and compare collaborative design behaviour.
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	caadria2006_521
id	caadria2006_521
authors	O. PALMON, M. SAHAR, L.P.WIESS, R.OXMAN
year	2006
title	VIRTUAL ENVIRONMENTS FOR THE EVALUATION OF HUMAN PERFORMANCE: Towards Virtual Occupancy Evaluation in Designed Environments (VOE)
doi	https://doi.org/10.52842/conf.caadria.2006.x.j9t
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 521-528
summary	Analyzing and evaluating designs for modifications to suit the requirements of human performance is typically performed only after the architectural spaces and structures have been built and used, a process that is known as retrofit or post-occupancy evaluation. For people with disabilities, there is a special need to overcome this problem by evaluating the suitability of their home environments before the construction phase. Our work introduces a new methodology in which virtual reality (VR) is used for virtual pre-occupancy environmental evaluation (VOE). Our study demonstrates the potential of the VOE concept by developing an interactive living environments model to evaluate human performance before the construction phase. This paper presents an interactive virtual environment, ‘HabiTest’, as well as the initial results of a usability evaluation of this interactive environment.
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	ascaad2014_029
id	ascaad2014_029
authors	Shih , Rowell Ray L. and Runddy D. Ramilo
year	2014
title	The Visual Perception and Human Cognition of Urban Environments Using Semantic Scales
source	Digital Crafting [7th International Conference Proceedings of the Arab Society for Computer Aided Architectural Design (ASCAAD 2014 / ISBN 978-603-90142-5-6], Jeddah (Kingdom of Saudi Arabia), 31 March - 3 April 2014, pp. 361-374
summary	The purpose of this study was to examine visual perception and human cognition on the use of 3D models to support the proper essential means of urban design presentations. The perception and comprehension of spatial volumes was examined between these 3D visualizations as a means of presentations for urban design. The Semantic Environmental Description Scale was used to investigate the effectiveness of both static 3D conventional scale models and 3D digital modelling. By using the Semantic Environmental Scale, we can find the attributes which affects the visual perception between the users of traditional scale models and the 3D digital models. A survey was conducted to measure how the respondents describe an urban environment. There were two groups of users: The first group was only allowed to analyse the scale model and the other group was given the 3D digital animation model. This methodology allows us to identify these main factors or attributes which describes the laypersons perception between these visualization techniques. In this way, a quantitative way of predicting the overall assessment from these factors can be obtained, thus predicting the success of a specific visualization method and thereby evaluating these main factors that condition it.
series	ASCAAD
email
last changed	2016/02/15 13:09

_id	ascaad2021_041
id	ascaad2021_041
authors	Taºdelen, Sümeyye; Leman Gül
year	2021
title	Social Network Analysis of Digital Design Actors: Exploratory Study Covering the Journal Architectural Design
source	Abdelmohsen, S, El-Khouly, T, Mallasi, Z and Bennadji, A (eds.), Architecture in the Age of Disruptive Technologies: Transformations and Challenges [9th ASCAAD Conference Proceedings ISBN 978-1-907349-20-1] Cairo (Egypt) [Virtual Conference] 2-4 March 2021, pp. 280-292
summary	This research asks the question of how the design knowledge production mechanism is processed differentiates digital design actors from each other in the social media/professional and academic fields of architecture. Due to the broad nature of the research question, the study focuses on academia and academia-related media through prominent architect-authors and subject titles in the literature. Bourdieu’s concept of capital is introduced, in which cultural and symbolic capital are considered part of the production values of digital design actors. Digital design actors use image-based social media tools such as Instagram effectively. The paper uses two methods: the first is a bibliographical analysis of author-texts, and the second is a social network analysis. By employing the keyword-based search from the Web of Science database, this study has managed to extract papers with full records (citations, keywords, and abstracts), with the journal Architectural Design having most publications. Considering that both academicians and professionals contribute to publications in Architectural Design, we selected all its publications between 2010-2020 for bibliometric analysis. These analysis techniques include the bibliometric network analyses and social network analysis with the focus on visualizing the algorithms and statistical calculations of well-established metrics. The research reveals the most critical nodes of the bibliometric network by calculating the appropriate central metrics. The network formed by the selected Instagram accounts of digital design actors are shown to be a small-scale network group, while the hashtags of digital design concepts are more numerous than the digital design actors.
series	ASCAAD
email
last changed	2021/08/09 13:11

_id	caadria2023_151
id	caadria2023_151
authors	Zhang, Wei and Hao, Jiaxue
year	2023
title	Planting Design Scenario Analysis With 3D Vegetation Models Generated From L-system Algorithm
doi	https://doi.org/10.52842/conf.caadria.2023.1.393
source	Immanuel Koh, Dagmar Reinhardt, Mohammed Makki, Mona Khakhar, Nic Bao (eds.), HUMAN-CENTRIC - Proceedings of the 28th CAADRIA Conference, Ahmedabad, 18-24 March 2023, pp. 393–402
summary	Due to the complex branching structure and enormous details of the plants, it has always been a challenge to simulate the vegetation’s 3D appearance. The currently widely used triangular surface models have multiple limitations in the representation of the tree structure for a large number of trees such as the low performance and low fidelity. As a generative algorithm, the L-system algorithm has been used to rapidly construct different vegetation models based on the branching characteristics and self-similarity of the foliage. In this study, a 160m×160m vegetation area in Qingshan Waterfront Park, Wuhan, China, was selected as the study area to construct a vegetation model based on the L-system algorithm to generate virtual 720° panoramic images. The virtual panoramic images were then compared with the on-site captured panoramic images by semantic segmentation method to verify the accuracy of the constructed parametric vegetation model. We calculated 3D vegetation volume during 3 different plant growth stages in the study area by converting the algorithmic vegetation model into a geometric voxel model. The results showed that the generated virtual panoramic visible green index was similar to the actual panoramic visible green index at the same location with an average difference of about 16% and the mean intersection over union (mIoU) of 50.18%. The 3D vegetation volume in this study area during the initial stage, the growing stage, and the mature stage was 17396m3, 35679m3, and 161007m3, and the 3D vegetation volume per unit area was 0.68 m3, 1.39 m3, and 6.26 m3, respectively.
keywords	L-system, 3D vegetation volume, panoramic visible green index, semantic segmentation
series	CAADRIA
email
last changed	2023/06/15 23:14

_id	ecaade2013_111
id	ecaade2013_111
authors	Androutsopoulou, Eirini
year	2013
title	Urban Body Mutations through the Use of the Network Configuration
doi	https://doi.org/10.52842/conf.ecaade.2013.1.275
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. 275-281
summary	Taking as a starting point the hypotheses that the urban body is a self-adapted ecology made of material and non-material components (Bateson, 1972), relationships between elements are examined in an attempt to destabilize the static division of matter and idea and to inquire into those relationships that determine the structural coupling (Maturana, 2002) between body and environment, as well as the constitution of the body itself. Contemporary technology is used in order to trace these alterations and the urban body is examined as a network configuration. The importance of the methodology adopted by the current research lies in the fact that social and economic factors merge with spatial characteristics, allowing for a visualization and re-interpretation of the urban body mutations based on self-adapted reconfigurations and for a prediction of the structural alterations made possible through the reconfiguration of the synaptic forces between elements.
wos	WOS:000340635300028
keywords	Mutation; urban body; visualization techniques; network; data manipulation.
series	eCAADe
email
last changed	2022/06/07 07:54

_id	cf2011_p170
id	cf2011_p170
authors	Barros, Mário; Duarte José, Chaparro Bruno
year	2011
title	Thonet Chairs Design Grammar: a Step Towards the Mass Customization of Furniture
source	Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 181-200.
summary	The paper presents the first phase of research currently under development that is focused on encoding Thonet design style into a generative design system using a shape grammar. The ultimate goal of the work is the design and production of customizable chairs using computer assisted tools, establishing a feasible practical model of the paradigm of mass customization (Davis, 1987). The current research step encompasses the following three steps: (1) codification of the rules describing Thonet design style into a shape grammar; (2) implementing the grammar into a computer tool as parametric design; and (3) rapid prototyping of customized chair designs within the style. Future phases will address the transformation of the Thonet’s grammar to create a new style and the production of real chair designs in this style using computer aided manufacturing. Beginning in the 1830’s, Austrian furniture designer Michael Thonet began experimenting with forming steam beech, in order to produce lighter furniture using fewer components, when compared with the standards of the time. Using the same construction principles and standardized elements, Thonet produced different chairs designs with a strong formal resemblance, creating his own design language. The kit assembly principle, the reduced number of elements, industrial efficiency, and the modular approach to furniture design as a system of interchangeable elements that may be used to assemble different objects enable him to become a pioneer of mass production (Noblet, 1993). The most paradigmatic example of the described vision of furniture design is the chair No. 14 produced in 1858, composed of six structural elements. Due to its simplicity, lightness, ability to be stored in flat and cubic packaging for individual of collective transportation, respectively, No. 14 became one of the most sold chairs worldwide, and it is still in production nowadays. Iconic examples of mass production are formally studied to provide insights to mass customization studies. The study of the shape grammar for the generation of Thonet chairs aimed to ensure rules that would make possible the reproduction of the selected corpus, as well as allow for the generation of new chairs within the developed grammar. Due to the wide variety of Thonet chairs, six chairs were randomly chosen to infer the grammar and then this was fine tuned by checking whether it could account for the generation of other designs not in the original corpus. Shape grammars (Stiny and Gips, 1972) have been used with sucesss both in the analysis as in the synthesis of designs at different scales, from product design to building and urban design. In particular, the use of shape grammars has been efficient in the characterization of objects’ styles and in the generation of new designs within the analyzed style, and it makes design rules amenable to computers implementation (Duarte, 2005). The literature includes one other example of a grammar for chair design by Knight (1980). In the second step of the current research phase, the outlined shape grammar was implemented into a computer program, to assist the designer in conceiving and producing customized chairs using a digital design process. This implementation was developed in Catia by converting the grammar into an equivalent parametric design model. In the third phase, physical models of existing and new chair designs were produced using rapid prototyping. The paper describes the grammar, its computer implementation as a parametric model, and the rapid prototyping of physical models. The generative potential of the proposed digital process is discussed in the context of enabling the mass customization of furniture. The role of the furniture designer in the new paradigm and ideas for further work also are discussed.
keywords	Thonet; furniture design; chair; digital design process; parametric design; shape grammar
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	8af2
authors	Bezier, Pierre E.
year	1972
title	UNISURF SYSTEM : Principles, Programme, Language
source	North Holland Pub. Co., 1972? pp. 417-426
summary	UNISURF is aimed at computer-assisted conception of sculptured surfaces. It is also used for numerical definition of shapes previously defined, whether they are the result of experiments based on physical measurements, or they materialize purely subjective aesthetic conceptions
keywords	curves, curved surfaces, Bezier, representation, mechanical engineering
series	CADline
last changed	2003/06/02 13:58

_id	91c4
authors	Checkland, P.
year	1981
title	Systems Thinking, Systems Practice
source	John Wiley & Sons, Chichester
summary	Whether by design, accident or merely synchronicity, Checkland appears to have developed a habit of writing seminal publications near the start of each decade which establish the basis and framework for systems methodology research for that decade."" Hamish Rennie, Journal of the Operational Research Society, 1992 Thirty years ago Peter Checkland set out to test whether the Systems Engineering (SE) approach, highly successful in technical problems, could be used by managers coping with the unfolding complexities of organizational life. The straightforward transfer of SE to the broader situations of management was not possible, but by insisting on a combination of systems thinking strongly linked to real-world practice Checkland and his collaborators developed an alternative approach - Soft Systems Methodology (SSM) - which enables managers of all kinds and at any level to deal with the subtleties and confusions of the situations they face. This work established the now accepted distinction between hard systems thinking, in which parts of the world are taken to be systems which can be engineered, and soft systems thinking in which the focus is on making sure the process of inquiry into real-world complexity is itself a system for learning. Systems Thinking, Systems Practice (1981) and Soft Systems Methodology in Action (1990) together with an earlier paper Towards a Systems-based Methodology for Real-World Problem Solving (1972) have long been recognized as classics in the field. Now Peter Checkland has looked back over the three decades of SSM development, brought the account of it up to date, and reflected on the whole evolutionary process which has produced a mature SSM. SSM: A 30-Year Retrospective, here included with Systems Thinking, Systems Practice closes a chapter on what is undoubtedly the most significant single research programme on the use of systems ideas in problem solving. Now retired from full-time university work, Peter Checkland continues his research as a Leverhulme Emeritus Fellow. "
series	other
last changed	2003/04/23 15:14

_id	acadia20_436
id	acadia20_436
authors	Chun Hin Fong, Jacky; Long Wun Poon, Adabelle; Sze Ngan, Wing; Hei Ho, Chung; Goepel, Garvin; Crolla, Kristof
year	2020
title	Augmenting Craft with Mixed Reality
doi	https://doi.org/10.52842/conf.acadia.2020.1.436
source	ACADIA 2020: Distributed Proximities / Volume I: Technical Papers [Proceedings of the 40th Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 978-0-578-95213-0]. Online and Global. 24-30 October 2020. edited by B. Slocum, V. Ago, S. Doyle, A. Marcus, M. Yablonina, and M. del Campo. 436-444.
summary	This paper discusses novel methods for and advantages of integrating augmented reality (AR) and photogrammetry in hand clay-sculpting workflows. These techniques permit nontrained users to achieve higher precision during the sculpting process by holographically overlaying instructions from digital 3D source geometry on top of the sculpting material. By employing alternative notational systems in design implementation methods, the research positions itself in a postdigital context aimed at humanizing digital technologies. Throughout history, devices have been developed to increase production, such as Henry Dexter’s 1842 “Apparatus for Sculptors” for marble sculpting. Extrapolating from this, the workflow presented in this paper uses AR to overlay extracted information from 3D models directly onto the sculptor’s field of vision. This information can then become an AR-driven guidance system that assists the sculptor. Using the Microsoft HoloLens, holographic instructions are introduced in the production sequence, connecting the analog sculpture fabrication directly with a digital environment, thus augmenting the craftspeople’s agency. A series of AR-aided sculpting methods were developed and tested in a demonstrator case study project that created a small-scale clay copy of Henry Moore’s Sheep Piece (1971–1972). This paper demonstrates how user-friendly software and hardware tools have lowered the threshold for end users to develop new methods that straightforwardly facilitate and improve their crafts’ effectiveness and agency. This shows that the fusion of computational design technology and AR visualization technology can innovate a specific craft’s design and production workflow, opening the door for further application developments in more architecture-specific fabrication contexts.
series	ACADIA
type	paper
email
last changed	2023/10/22 12:06

_id	ecaade2014_185
id	ecaade2014_185
authors	Eirini Androutsopoulou
year	2014
title	Urban body network configurations - Attica
doi	https://doi.org/10.52842/conf.ecaade.2014.1.191
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 191-199
summary	The methodology presented here is grounded on the reconstruction of the urban body as a network configuration consisting of material and non-material components (Bateson, 1972). It is based on the assumption that if one can describe the rules that define the nodes and the connections of the network construction/urban body, as well as their attributes, then the differentiation on the relationships between elements, or even a shift from one value to another, would result in different network constructions, that would produce a time-based sequence of the self-adaptational and self-organizational reconfigurations occurring during the mutational procedure. The urban body is defined as the part of the urban tissue which distinguishes itself from the whole of the urban landscape, either because of constructed boundaries, or because of the strengthening of a specific attribute, which would result in a kind of an immaterial boundary, or, in other words the formation of an identity.
wos	WOS:000361384700019
keywords	Mutation; urban body; visualization techniques; network; data manipulation
series	eCAADe
email
last changed	2022/06/07 07:55

_id	c703
authors	Flutter, A.G.
year	1972
title	The POLYSURF System
source	North Holland Pub. Co., 1972? pp. 403-415 : ill. includes bibliography
summary	POLYSURF is a system for the computer aided design and manufacture of engineering objects which are composed largely of 3D curved surfaces. The POLYSURF routines enable a design engineer to assemble a mathematical model of such objects in terms of bounded surface geometry. The model can then be appraised, analyzed and interactively adapted, and finally used as a basis for n/c manufacture
keywords	engineering, systems, CAD, CAM, solid modeling, curved surfaces
series	CADline
last changed	2003/06/02 13:58

_id	00c9
authors	Forrest, Robin A.
year	1972
title	On Coons and Other Methods for the Representation of Curved Surfaces
source	Computer Graphics and Image Processing. 1972. vol. 1: pp. 341-359 : ill. includes bibliography
summary	Although Coons surfaces are mentioned frequently in the context of computer graphics and computer-aided design, very little of the work has been published. The purpose of this paper is to provide an up to date account of Coons methods and extensions thereof, drawing mainly on unpublished material. The subject is not approached from a rigorous mathematical point of view, which can be found elsewhere, but from the standpoint of the computer scientist or engineer who wishes to implement or use such methods. An extensive bibliography of the subject, including unpublished papers, is appended
keywords	curved surfaces, representation, computer graphics, Coons
series	CADline
last changed	2003/06/02 10:24

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