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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Hits 1 to 20 of 168

_id sigradi2005_483
id sigradi2005_483
authors Abdelhameed, Wael
year 2005
title Digital-Media Impact on the Representation Capability of Architects
source SIGraDi 2005 - [Proceedings of the 9th Iberoamerican Congress of Digital Graphics] Lima - Peru 21-24 november 2005, vol. 1, pp. 483-489
summary Architects draw to define design problems, to construct concepts, or to explore ideas. Representation not only connects various design activities and tasks, but also is utilized inside all these activities and tasks. Within the context of this research, the Design Capabilities of architects are defined as the skills used during the design process, including Conceptualization, Representation, Form Giving, Knowledge Building and Retrieving, and Decision-Making. Using representational techniques introduced by digital media during design development has altered what we can represent, perceive, and therefore conceive and imagine. Depending on primary data (a global questionnaire) and secondary data (synthesis of previous researches), the results of this investigation have substantiated that there has been a positive impact of digital media settings on the output of Representation capability of architects. The analysis reveals some detailed findings, which provide a better understanding of the subject matter.
series SIGRADI
email w_wel@yahoo.com
last changed 2016/03/10 08:47

_id ecaade2018_138
id ecaade2018_138
authors Abdulmawla, Abdulmalik, Schneider, Sven, Bielik, Martin and Koenig, Reinhard
year 2018
title Integrated Data Analysis for Parametric Design Environment - mineR: a Grasshopper plugin based on R
source Kepczynska-Walczak, A, Bialkowski, S (eds.), Computing for a better tomorrow - Proceedings of the 36th eCAADe Conference - Volume 2, Lodz University of Technology, Lodz, Poland, 19-21 September 2018, pp. 319-326
summary In this paper we introduce mineR- a tool that integrates statistical data analysis inside the parametric design environment Grasshopper. We first discuss how the integration of statistical data analysis would improve the parametric modelling workflow. Then we present the statistical programming language R. Thereafter, we show how mineR is built to facilitate the use of R in the context of parametric modelling. Using two example cases, we demonstrate the potential of implementing mineR in the context of urban design and analysis. Finally, we discuss the results and possible further developments.
keywords Statistical Data Analysis; Parametric Design
series eCAADe
email abdulmalik.abdulmawla@uni-weimar.de
last changed 2018/07/24 10:24

_id ecaade2016_048
id ecaade2016_048
authors Abramovic, Vasilija and Achten, Henri
year 2016
title From Moving Cube to Urban Interactive Structures - A case study
source Herneoja, Aulikki; Toni Österlund and Piia Markkanen (eds.), Complexity & Simplicity - Proceedings of the 34th eCAADe Conference - Volume 1, University of Oulu, Oulu, Finland, 22-26 August 2016, pp. 661-668
wos WOS:000402063700071
summary When thinking about the future vision of a city, having in mind recent development in digital technologies and digital design tools we are inclined to expect new building structures which incorporate this technology to better help us manage the complexity of life, and to simplify our daily lives and tasks. The idea behind this research paper lies in design of such structures, which could be put inside an urban context and engage in creating a built environment that can add more to the quality of life. For us Interactive architecture is architecture that is responsive, flexible, changing, always moving and adapting to the needs of today. The world is becoming more dynamic, society is constantly changing and the new needs it develops need to be accommodated. As a result architecture has to follow. Spaces have to become more adaptive, responsive and nature concerned, while having the ability for metamorphosis, flexibility and interactivity. Taken as a starting point of this idea is a specific module from graduation project in 2014 "The Unexpected city", where it was possible to test out first ideas about interactive and flexible objects in an urban environment.
keywords Flexible architecture; Interactive architecture; Responsive systems
series eCAADe
email vasilijaabramovic@gmail.com
last changed 2017/06/28 08:46

_id sigradi2004_192
id sigradi2004_192
authors Adrián J. Levy
year 2004
title Espacios 4-d animados - Arquitectura de la música [4-D Animated Spaces - The Architecture of Music]
source SIGraDi 2004 - [Proceedings of the 8th Iberoamerican Congress of Digital Graphics] Porte Alegre - Brasil 10-12 november 2004
summary This project involves the creation of an architecture of music which may be defined as a series of interdisciplinary steps which seek to generate four-dimensional virtual spaces for the materialization of music. This materialization uses music as its .genetic information ., the virtual space as its medium, and the execution time of the musical piece as the fourth dimension to a three-dimensional virtual space. Within this space, each instrument.s execution is represented by a shape whose properties undergo changes resulting from the musical information. Through the use of new Virtual Reality techniques, we will soon have the possibility to be inside the music, as a habitable place. The achievement of this project is to provide the opportunity to experience this representation through virtual animation.
keywords Architecture of music, navigable music, cyberspace, four-dimensional, animation
series SIGRADI
email alevy@in4design.com.ar
last changed 2016/03/10 08:47

_id 0e93
authors Af Klercker, Jonas
year 1989
title Interactive Animation on the Macintosh II
source CAAD: Education - Research and Practice [eCAADe Conference Proceedings / ISBN 87-982875-2-4] Aarhus (Denmark) 21-23 September 1989, pp. 9.5.1-9.5.6
summary The efficiency of images in communication between humans has so far been used almost exclusively by TV and other mass medias. The costs have been too great to encourage the use of images in the financially restricted everyday practice of architecture. With a range of application programs for the Apple Macintosh II the vision has come close to reality. It is now possible to create guided walks with the chance to choose different routes and views in a model of buildings and surroundings in 256 colour graphics. The makers of these programs may not have foreseen this use for their products and that is why it takes quite a lot of effort to make all the necessary images. With some supplementary routines however, this will be made much easier. Animation can also be used to visualize different processes inside a building. We have been studying the working environment in mechanical industry. The goal of this project is to make communication possible between the workers at all levels of an organization in planning changes and has so far been very successful. The use of this technique is only limited by our imagination and funding. Some examples to be tested in the near future are "Escape at a fire", "Animation of a Dairy", "Traffic situations in a parking lot-, "CAD-working place" and others. One of the difficulties in interactive planning with users has been to come close enough to their reality. With animated images it is possible to visualize what is going to happen and what it is going to look like in a more understandable way. In education this must be a challenging possibility. Changes and processes are some of the most difficult subjects to describe and explain! The software used is a handful of individual programs which, thanks to the graphics standards of the Macintosh, can exchange data with each other.

series eCAADe
email Jonas.af_Klercker@caad.lth.se
more http://www.caad.lth.se/
last changed 2003/11/21 14:15

_id ascaad2016_003
id ascaad2016_003
authors Al-Jokhadar, Amer; Wassim Jabi
year 2016
title Humanising the Computational Design Process - Integrating Parametric Models with Qualitative Dimensions
source Parametricism Vs. Materialism: Evolution of Digital Technologies for Development [8th ASCAAD Conference Proceedings ISBN 978-0-9955691-0-2] London (United Kingdom) 7-8 November 2016, pp. 9-18
summary Parametric design is a computational-based approach used for understanding the logic and the language embedded in the design process algorithmically and mathematically. Currently, the main focus of computational models, such as shape grammar and space syntax, is primarily limited to formal and spatial requirements of the design problem. Yet, qualitative factors, such as social, cultural and contextual aspects, are also important dimensions in solving architectural design problems. In this paper, an overview of the advantages and implications of the current methods is presented. It also puts forward a ‘structured analytical system’ that combines the formal and geometric properties of the design, with descriptions that reflect the spatial, social and environmental patterns. This syntactic-discursive model is applied for encoding vernacular courtyard houses in the hot-arid regions of the Middle East and North Africa, and utilising the potentials of these cases in reflecting the lifestyle and the cultural values of the society, such as privacy, human-spatial behaviour, the social life inside the house, the hierarchy of spaces, the segregation and seclusion of family members from visitors and the orientation of spaces. The output of this analytical phase prepares the groundwork for the development of socio-spatial grammar for contemporary tall residential buildings that gives the designer the ability to reveal logical spatial topologies based on socio-environmental restrictions, and to produce alternatives that have an identity while also respecting the context, place and needs of users.
series ASCAAD
email Al-JokhadarA@cardiff.ac.uk
last changed 2017/05/25 11:13

_id ascaad2014_033
id ascaad2014_033
authors Al-Mousa , Sukainah Adnan
year 2014
title Temporary Architecture: An urban mirage
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. 405-413
summary One of the emerging multidisciplinary contemporary art practices is interactive installation art, which is concerned with constructing a temporary artistic environment that is digital, responsive and engaging. It is usually displayed within existing architectural context whether indoor in a gallery space or outdoor in a public space. Recent examples of such art projects show that interactivity and illusion are effectively present and highly influential in the perception and memory of the place. A digital display on a building façade can remain attached to the history of the site in the spectator’s memory even after the display is removed. An interactive space that involves body response and emotional sensory interaction can determine the narrative perceived from the experience. These trends seemingly bring together the physical context and the digital space to contain the spectator. The two mediums are merged to provide a new genre of space, hence a new mode of perception where the art space mediates people’s movement and overlay the context with new meanings. Multiple backgrounds are involved in the creative process of interactive installation art, all of which involve examining various concepts through artistic engagement with temporary spaces. Here, particularly because of interactivity and immerseveness, the spectator becomes part of the performance (the subject); with his moving and reacting he activates the narrative and probably gives it its shape. This paper aims to explore the potentials of the digital spatial display to enhance or weaken our sense of belonging to the surrounding environments while creating an illusionary space within the real physical one. It also aims to discuss how this influence would affect the memory of the mixed experience; the installation being digital, temporary and illusive and the space being physical, permanent and real. What happens to the “spectator” when contained by the digital-interactive and the physical medium(s)?. In order to unfold the mentioned questions, the study uses theories of perception and performance reflected on live case studies of recent art projects where the researcher becomes a member of the audience and an observer at the same time in order to trace the journey inside this new medium. In an era where time is being more difficult to grasp and identities of visual culture is becoming more difficult to define, temporary responsive environments can provide some openings where space becomes durational, yet, influential, and where people’s movements become more meaningful in the visual terrain.
series ASCAAD
email s.almousa@sheffield.ac.uk
last changed 2016/02/15 12:09

_id 20c1
authors Alavalkama, Ilkka
year 1993
title Technical Aspects of the Urban Simulator in Tampere University of Technology
source Endoscopy as a Tool in Architecture [Proceedings of the 1st European Architectural Endoscopy Association Conference / ISBN 951-722-069-3] Tampere (Finland), 25-28 August 1993, pp. 35-46
summary The colour video recording Urban Simulator in TUT was built very early compared with the development of video systems. A contract for planning the simulator electronics, mechanics and camera systems was made in january 1978 with two TUT students: Jani Granholm (computer science and engineering) and Ilkka Alavalkama (machine design and automation). Ease of control and maintenance were asked by side of ”human movement inside coloured small-scale architectural models”. From the beginning, all components of the system were carefully tested and chosen from various alternatives. Financial resources were quite limited, which lead to a long building process and to self-planned and produced mechanical and electronical elements. Some optical systems were constructed by using elements from various manufacturers.

keywords Architectural Endoscopy
series EAEA
more http://info.tuwien.ac.at/eaea/
last changed 2005/09/09 08:43

_id bba7
authors Alexander, Christopher W.
year 1964
title Notes on the Synthesis of Form
source Harvard Graduate School of Design
summary Every design problem begins with an effort to achieve fitness between two entities: the form in question and its context. The form is the solution to the problem; the context defines the problem. We want to put the context and the form into effortless contact or frictionless coexistence, i.e., we want to find a good fit. For a good fit to occur in practice, one vital condition must be satisfied. It must have time to happen. In slow-changing, traditional, unselfconscious cultures, a form is adjusted soon after each slight misfit occurs. If there was good fit at some stage in the past, no matter how removed, it will have persisted, because there is an active stability at work. Tradition and taboo dampen and control the rate of change in an unselfconscious culture's designs. It is important to understand that the individual person in an unselfconscious culture needs no creative strength. He does not need to be able to improve the form, only to make some sort of change when he notices a failure. The changes may not always be for the better; but it is not necessary that they should be, since the operation of the process allows only the improvements to persist. Unselfconscious design is a process of slow adaptation and error reduction. In the unselfconscious process there is no possibility of misconstruing the situation. Nobody makes a picture of the context, so the picture cannot be wrong. But the modern, selfconscious designer works entirely from a picture in his mind - a conceptualization of the forces at work and their interrelationships - and this picture is almost always wrong. To achieve in a few hours at the drawing board what once took centuries of adaptation and development, to invent a form suddenly which clearly fits its context - the extent of invention necessary is beyond the individual designer. A designer who sets out to achieve an adaptive good fit in a single leap is not unlike the child who shakes his glass-topped puzzle fretfully, expecting at one shake to arrange the bits inside correctly. The designer's attempt is hardly as random as the child's is; but the difficulties are the same. His chances of success are small because the number of factors which must fall simultaneously into place is so enormous. The process of design, even when it has become selfconscious, remains a process of error-reduction. No complex system will succeed in adapting in a reasonable amount of time or effort unless the adaptation can proceed component by component, each component relatively independent of the others. The search for the right components, and the right way to build the form up from these components, is the greatest challenge faced by the modern, selfconscious designer. The culmination of the modern designer's task is to make every unit of design both a component and a system. As a component it will fit into the hierarchy of larger components that are above it; as a system it will specify the hierarchy of smaller components of which it itself is made.
series thesis:PhD
email services@patternlanguage.com
last changed 2003/02/12 21:37

_id ascaad2006_paper23
id ascaad2006_paper23
authors Ali, Rasha
year 2006
title Islamic Architecture and Digital Databases
source Computing in Architecture / Re-Thinking the Discourse: The Second International Conference of the Arab Society for Computer Aided Architectural Design (ASCAAD 2006), 25-27 April 2006, Sharjah, United Arab Emirates
summary Epigraphy in Islamic architecture represented an indispensable element in its conceptual design and structure. Our research investigates this unique role, which epigraphy played in Islamic architecture as a tool singularizing this architecture and the sensuality it inspires inside a building while bestowing on it its particular identity. This how SADEPIG came to being: it is a virtual database regrouping all the information about the monumental epigraphy which date from the Sa‘dian period in Morocco (1527- 1660). The digital corpus of monumental Sa‘dian inscriptions provides also buildings plans, virtual tour within the monument, construction details, information about the identity of patron and builders.
series ASCAAD
email ruchii@aucegypt.edu
last changed 2007/04/08 17:47

_id ga9925
id ga9925
authors Ambrosini, L., Longatti, M. and Miyajima, H.
year 1999
title Time sections, abstract machines
source International Conference on Generative Art
summary conditions a time-spatial discontinuity in the urban grid, ancient walls casually discovered in a substrate of the contemporary town needs a surplus of information to be understood and interfaced with their current condition. diagrams diverse chronological stages of the urban evolution are mapped on the area, in order to read the historical stratifications as a multiplicity of signs; this abstract approach leads to consider the roman space as guided by metrics, a system of measure superimposed on the landscape, vs. medioeval spatial continuity, where more fluid relations between the same urban elements create a completely different pattern.assemblage (time sections) a surface, automatically displaced from the medioeval diagram, moves along the z axis, the historical stratification direction, intersecting in various, unpredictable, manners a series of paths; these paths start as parallels, allowing an undifferentiated access to the area, and mutate along their developing direction, intertweening and blending each other; linear openings are cut on the surface, virtually connecting the two levels by light, following the roman grid in rhythm and measure. Projected on the lateral wall, the cadence of the vertical and horizontal elements becomes a temporal diagram of the design process.movement time takes part into the process through two kinds of movement: the first one, freezed when reaches the best results, in terms of complexity, is given by the surface intersecting the tubular paths; the second one is represented by multiple routes walking on which the project can be experienced (in absence of any objective, fixed, point of view, movement becomes the only way to understand relations). Thresholds between typical architectural categories (such as inside-outside, object-landscape etc.) are blurred in favour of a more supple condition, another kind of continuity (re)appears, as a new media, between the different historical layers of the city.
series other
more http://www.generativeart.com/
last changed 2003/08/07 15:25

_id aa7c
authors Amirante, M. Isabella and Burattini, Ernesto
year 1996
title Automatic Procedures for Bio-Climatic Control
source Education for Practice [14th eCAADe Conference Proceedings / ISBN 0-9523687-2-2] Lund (Sweden) 12-14 September 1996, pp. 29-40
summary The experiences illustrated here are related to the new regulation of teaching architecture in Italy and these ones in particular have been concentrated on the technological aspects of teaching architecture. We can consider the evolution of the architect from the individual operator to the manager multi- disciplinary aspects of the building process ( building process manager) as a reality today. Information technology, specifically applied to bio-climatic architecture and environmental control, can be of great importance for this professional role, and for this reason it is very useful to include these topics at the beginning the teaching design process. This paper describes a particular approach to bio-climatic problems of the architectural project. An experimental course has been performed by the second year students of the "Laboratorio di Construzione dell' Architettura", at the School of Architecture of the Second University of Naples, in Aversa. Analysing old and new buildings, they used some flow charts for the evaluation and representation of energetic behaviour of buildings regarding their climatic and geographical environment. In the flow charts the decisions are represented by boxes that allow to determine "rightness index" related to: morphological characters of the site and environment, typology and particular organisation of the inside spaces, shape of building, technological solution of the building "skin". The navigation through the decision boxes is made with simple options like; "winds: protected or exposed site", "shape of building; free, close or cross plane", "presence of trees on the south,; yes or not",; it shows the students the bio-climatic quality of the building and, through numeric value assigned to each option, determines the "weight" of its climatic comfort.

series eCAADe
last changed 2003/11/21 14:15

_id 8378
authors Arlati, Ezio
year 1995
title Patriarch: A Hypermedia Environment for the Support of Architectural Design
source Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 187-198
summary This paper reports on current research in the field of architectural design and knowledge- based systems, through the conception and implementation of two software tools operating as a part of an integrated hypermedia environment denominated PatriArch. Main concern of this set of tools operating in PatriArch is the support of design since the very beginning, in that phase of not yet correctly explored or interpretated constraints and of scarcely specified goals, in which an initial solution model - provisionally composed of fragments of supposed fitting ideas - for the design theme has to take place. The creative activity of the designer is assumed as an 'intentional planning activity' that represents the acquired level of knowledge of the network of connections defining the nature, function, shape in the space etc. of the increasingly integrated solution-model: the final design will be an evolution of this - and other competitive and concurrent - models. PatriArch is meant to be the environment containing and allowing the representation of this evolution through its ability of linking the fragments of designers' knowledge, supported by an integrated relational data base: Sysinfo. These works were conceived inside an educational software development program for architecture students.

series eCAADe
more http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_25.htm
last changed 2003/11/21 14:16

_id e29d
authors Arvesen, Liv
year 1996
title LIGHT AS LANGUAGE
source Full-Scale Modeling in the Age of Virtual Reality [6th EFA-Conference Proceedings]
summary With the unlimited supply of electric light our surroundings very easily may be illuminated too strongly. Too much light is unpleasant for our eyes, and a high level of light in many cases disturbs the conception of form. Just as in a forest, we need shadows, contrasts and variation when we compose with light. If we focus on the term compose, it is natural to conceive our environment as a wholeness. In fact, this is not only aesthetically important, it is true in a physical context. Inspired by old windows several similar examples have been built in the Trondheim Full-scale Laboratory where depth is obtained by constructing shelves on each side of the opening. When daylight is fading, indirect artificial light from above gradually lightens the window. The opening is perceived as a space of light both during the day and when it is dark outside.

Another of the built examples at Trondheim University which will be presented, is a doctor's waitingroom. It is a case study of special interest because it often appears to be a neglected area. Let us start asking: What do we have in common when we are waiting to come in to a doctor? We are nervous and we feel sometimes miserable. Analysing the situation we understand the need for an interior that cares for our state of mind. The level of light is important in this situation. Light has to speak softly. Instead of the ordinary strong light in the middle of the ceiling, several spots are selected to lighten the small tables separating the seats. The separation is supposed to give a feeling of privacy. By the low row of reflected planes we experience an intimate and warming atmosphere in the room. A special place for children contributes to the total impression of calm. In this corner the inside of some shelves are lit by indirect light, an effect which puts emphasis on the small scale suitable for a child. And it also demonstrates the good results of variation. The light setting in this room shows how light is “caught” two different ways.

keywords Model Simulation, Real Environments
series other
type normal paper
more http://info.tuwien.ac.at/efa/
last changed 2004/05/04 12:34

_id e72e
authors Asaro, N., Corrao, R., Faconti, D., Fiandaca, O., Grifoni, P. and Silvani, A.
year 1995
title Riesce: An Hypertextual Tool for Browsing Information Produced in the Building Sector by PFEd
source Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 401-408
summary The structure of a set of documents allow for navigation inside single texts. Yet it is often also an obstacle to comparability between different parts and concepts. Even document formatting is only a partial answer to the problem, since it fails to develop the matter of relationships between enunciation and results. It was need to retrieve information about the scientific findings made by Research Units (Operating Units) during the first three year period of the "Progetto Finalizzato Edilizia" (PFEd) for assessment and transfer purposes which led us to design and develop a system to facilitate the retrieval of the relevant information. We chose the building sector for this application because of its relative lack of previous experience of this type, the variety and complexity of documentation available and, last but not least, the general underestimation of research topics and results vis-à-vis the development of the sector. By making the suggestion and information inherent in its findings more available, in terms of method and ambit, as well as more explicit, the research has already achieved a significant result. In view of the prototype character of the experiment, the information will probably be adopted to produce an hypertext on the final results.

series eCAADe
more http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_48.htm
last changed 2003/11/21 14:16

_id ecaade2010_196
id ecaade2010_196
authors Augustynowicz, Edyta; Sixt, Stefanie; Georgakopoulou, Sofia
year 2010
title Attractive City - An Interactive City Generator
source FUTURE CITIES [28th eCAADe Conference Proceedings / ISBN 978-0-9541183-9-6] ETH Zurich (Switzerland) 15-18 September 2010, pp.379-387
wos WOS:000340629400040
summary The Attractive City Generator is an interactive installation with which users can create or rearrange virtual cities by placing and moving physical objects. Through the set of simple inputs that the users provide and which represent city areas, landscapes or landmarks, the ACG is capable of creating complex and growing cities. In addition, a plethora of factual feedback on these cities is calculated. Becoming physically involved enhances the learningprocess and increases the user’s interest. The users are drawn to the colourful and simple interface. Due to the practical feedback that the city returns, the users can feel more attached to the city they have created. A dynamic dialogue is formed between the city and its creators, that involves the wishes of the users versus the needs of the virtual city, the practical interaction on the table versus the theoretical calculations taking place inside the computer, the physical input versus the digital output.
keywords Interactivity; City planning; Human-computer interface; L-system; Developmental models
series eCAADe
email edytaau@gmail.com
last changed 2016/05/16 09:08

_id 8ae8
authors Ayala, D., P. Brunet and Juan (et al)
year 1985
title Object Representation by Means of Nominimal Division Quadtrees and Octrees
source ACM Transactions on Graphics. January, 1985. vol. 4: pp. 41-59 : ill. includes bibliography
summary Quadtree representation of two-dimensional objects is performed with a tree that describes the recursive subdivision of the more complex parts of a picture until the desired resolution is reached. At the end, all the leaves of the tree are square cells that lie completely inside or outside the object. There are two great disadvantages in the use of quadtrees as a representation scheme for objects in geometric modeling system: The amount of memory required for polygonal objects is too great, and it is difficult to recompute the boundary representation of the object after some Boolean operations have been performed. In the present paper a new class of quadtrees, in which nodes may contain zero or one edge, is introduced. By using these quadtrees, storage requirements are reduced and it is possible to obtain the exact backward conversion to boundary representation. Algorithms for the generation of the quadtree, boolean operation, and recomputation of the boundary representation are presented, and their complexities in time and space are discussed. Three- dimensional algorithms working on octrees are also presented. Their use in the geometric modeling of three-dimensional polyhedral objects is discussed
keywords geometric modeling, algorithms, octree, quadtree, curves, curved surfaces, boolean operations
series CADline
last changed 2003/06/02 11:58

_id caadria2010_029
id caadria2010_029
authors Baerlecken, Daniel; Martin Manegold, Judith Reitz and Arne Kuenstler
year 2010
title Integrative parametric form-finding processes
source Proceedings of the 15th International Conference on Computer Aided Architectural Design Research in Asia / Hong Kong 7-10 April 2010, pp. 303-312
summary The recent developments in digital technologies and contemporary design tools are initiating new approaches of form-finding based on parametric development of multiple geometries with simultaneous consideration of various aspects. This paper focuses on the use of advanced parametric CAD systems and reformulated construction logics to enhance the potential and possibilities of form finding processes. This approach is exemplified through the “Greenhouse Trauttmansdorff project”. The project demonstrates a form finding approach which is based on defined parameters that not only fulfil aesthetic and functional aspects, but simultaneously take structural properties and the resulting sun shading behaviour into account. We will explore within this paper how – next to the functional and contextual building requirements – required illumination levels inside the greenhouse create a feedback loop between the structural system and its cladding system.
keywords parametric representations; digital technologies; digital fabrication; variable systems; load bearing construction
series CAADRIA
email baerlecken@bfrlab.com
last changed 2012/05/30 19:29

_id 30d7
authors Bartnicka, Malgorzata
year 1995
title Childishly Honest Associate of the Trickery
source CAD Space [Proceedings of the III International Conference Computer in Architectural Design] Bialystock 27-29 April 1995, pp. 209-219
summary Perspective is a method of presentation of 3- dimensional space on the 2-dimensional surface. It can only approximately express the complexity of the authentic perception of reality. During the centuries canons of presentation varied in different epochs. It is quite possible that conventions of presentation considered today as exact expressions of reality may seem for the future generations as untrue as the ancient Egypt paintings seem for us. Our mind plays the major role in all kinds of presentation. During the whole life we learn to perceive the surrounding reality. We have formed also ability to ,see" the perspective. The linear perspective is not so easy in perception without factors of colour and light. These factors play a very important role in perception of the distance. The perception of perspective is not always unmistakable. Introduction of light and shadow is one of the measures to limit the ambiguity. Objects shown in perspective with appropriately chosen colouring and light-and-shade effects reveal impression of the distance inside the flat picture. Illusions of perspective are most astonishing when one can assume deep-rooted expectations and suppositions of the addressee. The computer monitor, like the picture, has only one plane on which our project can be presented. The major feature of architecture programs is both the possibility of creating various architecture spaces and the possibility to examine how (in our opinion) the created space would affect the addressee. By means of computer programs we are able to generate drawings and objects of two kinds: first - being the ideal projection of reality (at least in the same measure as the photograph), and the second - being the total negation of perspective rules. By means of CAD programs enabling 3-dimensional job we can check how all sorts of perspective tricks and artifices affect our imagination. The program cooperates with us trying to cheat the imperfect sense of sight. The trickeries can be of various type, starting from play of lights, through the elements changing the perception of perspective, and terminating with objects totally negating the rules of sound construction of solids. The knowledge contained in these programs is an encyclopaedic recapitulation of all sorts of achievements in the field of perspective and application of colour and light effects. All that remains to the users is to exploit this tremendous variety of capabilities.
series plCAD
last changed 2000/01/24 09:08

_id 8a27
authors Bentley, Jon L. and Carruthers, Wendy
year 1980
title Algorithms for Testing the Inclusion of Points in Polygons
source Allertorn Conference on Communication, Control and Computing (18th : 1980). (10) p. includes bibliography
summary Determining whether a given point lies inside or outside a simple polygon is an important problem in many applications, including computer vision systems and computer-assisted political redistricting systems. In this paper the authors give algorithms for inclusion problems that are efficient for polygons that are 'close to convex' in a certain precise sense. An empirical study of polygons that arise in several applications shows that typical polygons are indeed 'close to convex,' and a program implementing the algorithm shows that is extremely efficient on point sets of practical sizes
keywords point inclusion, polygons, algorithms, computational geometry
series CADline
last changed 2003/06/02 11:58

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