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

PDF papers
References

Hits 1 to 20 of 624

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

_id	2f1a
authors	Dabney, M.K., Wright, J.C. and Sanders, D.H.
year	1999
title	Virtual Reality and the Future of Publishing Archaeological Excavations: the multimedia publication of the prehistoric settlement on Tsoungiza at Ancient Nemea
source	New York: The Metropolitan Museum of Art
summary	The Nemea Valley Archaeological Project is a study of settlement and land use in a regional valley system in Greece extending from the Upper Paleolithic until the present. Active field research was conducted by four teams between 1981 and 1990. The first component was a regional archaeological survey. Second, and closely related to the first, was a social anthropological study of modern settlement and land use. Next was a team assigned to excavate the succession of prehistoric settlements of Ancient Nemea on Tsoungiza. Last, historical ecologists, a palynologist, and a geologist formed the environmental component of the research. As a result of advances in electronic publishing, plans for the final publication of the Nemea Valley Archaeological Project have evolved. Complete publication of the excavation of the prehistoric settlements of Ancient Nemea on Tsoungiza will appear in an interactive multimedia format on CD/DVD in Fall 2000. This project is planned to be the first electronic publication of the American School of Classical Studies at Athens. We have chosen to publish in electronic format because it will meet the needs and interests of a wider audience, including avocational archaeologists, advanced high school and college students, graduate students, and professional archaeologists. The multimedia format on CD/DVD will permit the inclusion of text, databases, color and black-and-white images, two and three-dimensional graphics, and videos. This publication is being developed in cooperation with Learning Sites, Inc., which specializes in interactive three-dimensional reconstructions of ancient worlds http://www.learningsites.com. The Nemea Valley Archaeological Project is particularly well prepared for the shift towards electronic publishing because the project's field records were designed for and entered in computer databases from the inception of the project. Attention to recording precise locational information for all excavated objects enables us to place reconstructions of objects in their reconstructed architectural settings. Three-dimensional images of architectural remains and associated features will appear both as excavated and as reconstructed. Viewers will be able to navigate these images through the use of virtual reality. Viewers will also be able to reference all original drawings, photographs, and descriptions of the reconstructed architecture and objects. In this way a large audience will be able to view architectural remains, artifacts, and information that are otherwise inaccessible.
series	other
last changed	2003/04/23 15:14

_id	2092
authors	Voigt, Andreas and Linzer, Helena
year	1999
title	The Digital City
source	III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 438-442
summary	Information-transfer and -management, quality of planning, efficiency in decision-finding and public relations make for the continuous challenges in space-related planning. The integration of the "computer" - an essential tool of modern times - throughout the process of urban and regional planning, particularly regarding city development is a present-day challenge. A "Computer Aided City Development" calls for modular structuring taking the specialized requirements of a up-to-date city development into account as well as integrating suited simulation techniques and media effectively in the planning process in line with the respective state of the art. The present research project was aimed at structuring modular fields of application for "Computer Aided City Development" on the basis of the general framework conditions of regional and urban planning and city development. Paying regard to the "ecological-dynamical" city development the pilot project "The Digital City" puts planning modules of "Computer Aided City Development" to use in a selected transection of the urban area of Vienna (area around UNO-City, Wagramer Straße). By means of a digital, three-dimensional work-as-executed model the urban-spatial development possibilities in variants can be subjected to a spatial discussion throughout workshops making interactive use of a high-speed graphic computer. Furthemore, this pilot project was also dedicated to trying new forms of cooperation between science and administration
keywords	Computer Graphics in Design and Planning, Urban Design, Urban Planning
series	SIGRADI
email
last changed	2016/03/10 10:02

_id	e719
authors	Achten, Henri and Turksma, Arthur
year	1999
title	Virtual Reality in Early Design: the Design Studio Experiences
source	AVOCAAD Second International Conference [AVOCAAD Conference Proceedings / ISBN 90-76101-02-07] Brussels (Belgium) 8-10 April 1999, pp. 327-335
summary	The Design Systems group of the Eindhoven University of Technology started a new kind of design studio teaching. With the use of high-end equipment, students use Virtual Reality from the very start of the design process. Virtual Reality technology up to now was primarily used for giving presentations. We use the same technology in the design process itself by means of reducing the time span in which one gets results in Virtual Reality. The method is based on a very brief cycle of modelling in AutoCAD, assigning materials in 3DStudio Viz, and then making a walkthrough in Virtual Reality in a standard landscape. Due to this cycle, which takes about 15 seconds, the student gets immediate feedback on design decisions which facilitates evaluation of the design in three dimensions much faster than usual. Usually the learning curve of this kind of software is quite steep, but with the use of templates the number of required steps to achieve results is reduced significantly. In this way, the potential of Virtual Reality is not only explored in research projects, but also in education. This paper discusses the general set-up of the design studio and shows how, via short workshops, students acquire knowledge of the cycle in a short time. The paper focuses on the added value of using Virtual Reality technology in this manner: improved spatial reasoning, translation from two-dimensional to three-dimensional representations, and VR feedback on design decisions. It discusses the needs for new design representations in this design environment, and shows how fast feedback in Virtual Reality can improve the spatial design at an early stage of the design process.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	64e4
authors	Boardman, Ted and Hubbell, Jeremy
year	1999
title	Inside 3D Studio Max 3 Modeling, Materials and Rendering : Modeling, Materials, and Rendering
source	New Riders Pub
summary	Inside 3D Studio MAX 3 Modeling, Materials, and Rendering is the only in-depth guide dedicated to modeling, materials, and rendering with 3D Studio MAX. You go inside the advanced modeling, texturing, and rendering features of 3D Studio MAX and learn how to use these features to get professional results. Real-world tutorials, advanced tips, and insider tricks take you beyond the basics and help you master high-end techniques. The CD-ROM is loaded with MAX and AVI files, models, materials, and textures for polishing your skills with the book's tutorials.
series	other
last changed	2003/02/26 18:58

_id	48a7
authors	Brooks
year	1999
title	What's Real About Virtual Reality
source	IEEE Computer Graphics and Applications, Vol. 19, no. 6, Nov/Dec, 27
summary	As is usual with infant technologies, the realization of the early dreams for VR and harnessing it to real work has taken longer than the wild hype predicted, but it is now happening. I assess the current state of the art, addressing the perennial questions of technology and applications. By 1994, one could honestly say that VR "almost works." Many workers at many centers could doe quite exciting demos. Nevertheless, the enabling technologies had limitations that seriously impeded building VR systems for any real work except entertainment and vehicle simulators. Some of the worst problems were end-to-end system latencies, low-resolution head-mounted displays, limited tracker range and accuracy, and costs. The technologies have made great strides. Today one can get satisfying VR experiences with commercial off-the-shelf equipment. Moreover, technical advances have been accompanied by dropping costs, so it is both technically and economically feasible to do significant application. VR really works. That is not to say that all the technological problems and limitations have been solved. VR technology today "barely works." Nevertheless, coming over the mountain pass from "almost works" to "barely works" is a major transition for the discipline. I have sought out applications that are now in daily productive use, in order to find out exactly what is real. Separating these from prototype systems and feasibility demos is not always easy. People doing daily production applications have been forthcoming about lessons learned and surprises encountered. As one would expect, the initial production applications are those offering high value over alternate approaches. These applications fall into a few classes. I estimate that there are about a hundred installations in daily productive use worldwide.
series	journal paper
email
last changed	2003/04/23 15:14

_id	1206
authors	Cabezas, M., Mariano, C., Mitolo, S. and Oliva, S.
year	1999
title	Transformaciones en el Proceso Enseñanza-Aprendizaje de la Geometría Descriptiva con la Apliacación de los Medios Digitales (Transformations in the Teaching/Learning Process of Descriptive Geometry with the Aplplication of Digital Media)
source	III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 347-348
summary	The insert of the digital technologies in the atmosphere Áulico has left generalizing in a significant way. An example constitutes it the high percentage of students that they manifested general knowledge in the software handling in the introductory course of visual communication, as well as the voluntary presentation of practical works developed with digital means. The necessity of an answer to the requirements that arise of the students sinks to the certainty of a pedagogic compatibility among the matter to try and the teaching attended by the personal computer that would increase the Iconidad and the understanding of a topic of certain complexity like it is the geometry of the space. An educational program designed for the teaching of the Sistema Monge whose general characteristics were presented in the II Ibero-American Seminar of Digital Graph and that it will be applied as experience pilot in the course 2000, it will allow us to respond to the following queries: what place it will be given to the educational program in the formation process in connection with the other pedagogic means.
series	SIGRADI
email
last changed	2016/03/10 09:47

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

_id	caadria2005_b_4b_d
id	caadria2005_b_4b_d
authors	Martin Tamke
year	2005
title	Baking Light: Global Illumination in VR Environments as architectural design tool
doi	https://doi.org/10.52842/conf.caadria.2005.214
source	CAADRIA 2005 [Proceedings of the 10th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] New Delhi (India) 28-30 April 2005, vol. 2, pp. 214-228
summary	As proven in the past, immersive Virtual Environments can be helpful in the process of architectural design (Achten et al. 1999). But still years later, these systems are not common in the architectural design process, neither in architectural education nor in professional work. The reasons might be the high price of e.g. CAVEs, the lack of intuitive navigation and design tools in those environments, the absence of useful and easy to handle design workflows, and the quality constraints of real-time display of 3D models. A great potential for VR in the architectural workflow is the review of design decisions: Display quality, comfortable navigation and realistic illumination are crucial ingredients here. Light is one of the principal elements in architectural design, so design reviews must enable the architect to judge the quality of his design in this respect. Realistic light simulations, e.g. via radiosity algorithms, are no longer the domain of high-end graphic workstations. Today's off-the-shelf hardware and 3D-software provide the architect with high-quality tools to simulate physically correct light distributions. But the quality and impression of light is hard to judge from looking at still renderings. In collaboration with the Institute of Computer Graphics at our university we have established a series of regular design reviews in their immersive virtual environment. This paper describes the workflow that has emerged from this collaboration, the tools that were developed and used, and our practical experiences with global-light-simulations. We share results which we think are helpful to others, and we highlight areas where further research is necessary.
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	02dc
authors	Ng, E.N., Poh, L.K., Wei, W. and Nagakura, T.
year	1999
title	Advanced Lighting Simulation in Architectural Design in the Tropics
doi	https://doi.org/10.52842/conf.caadria.1999.429
source	CAADRIA '99 [Proceedings of The Fourth Conference on Computer Aided Architectural Design Research in Asia / ISBN 7-5439-1233-3] Shanghai (China) 5-7 May 1999, pp. 429-441
summary	This paper outlines a two years research program that the team attempted to apply one of the most powerful computational lighting simulation software RADIANCE to assist in daylighting design of an actual building in the tropics. The validation studies, which were carried out in the Asian Civilisation Museum (ACM) in Singapore, show that Radiance can be used to predict the internal illuminance with a high degree of accuracy under overcast sky conditions without external obstruction. The experimental application of Radiance to daylighting investigation of the ACM further supports its capabilities as well as its accuracy. Using Radiance to study two daylighting control options (curtains and louvers), it can be found that louvers are more effective than curtains as daylighting control devices, and that the angle of the louvers has more effect than their reflectance on daylight penetration and distribution.
series	CAADRIA
last changed	2022/06/07 07:58

_id	b6d4
authors	Rousse, Pierre
year	1999
title	Envisioning an Urban space that Integrates Architecture into an Information Oriented Society
source	III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 197-200
summary	There is an assumption that architecture can provide an evocative vision of an artificial environment using digitalized and wireless communication technology. It is a ideal based on perception of virtual space, where distance is minimized through the continual process of breaking barriers in none visible planes. It is domain of mind, in which the object becomes real by individual choice. It is conceived in a plane known as virtual space or cyber space. Marcos Novak describes it as "space created as habitat for our imagination". I approach the topic trying to establish a connection between the boundaries of virtual space and real space through architecture. These are the objectives of my inquiry: 1) To explore an architectural form in a media of non-concrete space. Space created by a negative space (empty space, residual space, loading space). 2) To define a new technology that marks the beginning of a real virtual environment accessible to everybody. Proposing the idea of socialization through the architecture and revitalizing negative spaces comprehended as valuable public places. 3) Identification and representation of sources that make possible telecommunication technology in an enclosed space. Prototype of a new communicational platform re-interpreted by cyber space, digital images, high-speed data, mobile Internet and application based on Intranets, extranets and mobile multimedia.
series	SIGRADI
email
last changed	2016/03/10 09:59

_id	1c67
authors	Sanchez, S., Zulueta A., and Barrallo J.
year	1999
title	Bilbao: The Revitalisation of a City
doi	https://doi.org/10.52842/conf.ecaade.1999.694
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 694-699
summary	The city of Bilbao has suffered in the last decade a deep transformation. After a glorious industrial past, Bilbao was in 1990 a depressed city, and the strategies necessary to transform an industrial city into a service capital were no simple due to the high level of pollution and unemployment rate. The "Bilbao Metropoli-30" Association was created to coordinate the synergetic action of all the involved institutions: City Hall, Basque Country and Spanish Governments, financial institutions, transport companies, airport and port, etc. But it was also necessary the acceptance of the public opinion to recover the illusion and the lost pride of the city. The desolated social scene was not adequate for revolutionary designs like the winding Frank Gehry's Bilbao Guggenheim Museum, or the cavernous Norman Foster's underground. This work pretends to show the means and strategies, especially computational, that allowed the transformation of Bilbao with an enthusiastic citizen support.
keywords	Metropolitan Bilbao, City Revitalisation, Architectural Computer Simulation
series	eCAADe
email
last changed	2022/06/07 07:56

_id	ga9926
id	ga9926
authors	Antonini, Riccardo
year	1999
title	Let's Improvise Together
source	International Conference on Generative Art
summary	The creators of ‘Let's-Improvise-Together’ adhere to the idea that while there is a multitude of online games now available in cyberspace, it appears that relatively few are focused on providing a positive, friendly and productive experience for the user. Producing this kind of experience is one the goals of our Amusement Project.To this end, the creation of ‘Let's Improvise Together’ has been guided by dedication to the importance of three themes:* the importance of cooperation,* the importance of creativity, and* the importance of emotion.Description of the GameThe avatar arrives in a certain area where there are many sound-blocks/objects. Or he may add sound "property" to existing ones. He can add new objects at will. Each object may represents a different sound, they do not have to though. The avatar walks around and chooses which objects he likes. Makes copies of these and add sounds or change the sounds on existing ones, then with all of the sound-blocks combined make his personalized "instrument". Now any player can make sounds on the instrument by approaching or bumping into a sound-block. The way that the avatar makes sounds on the instrument can vary. At the end of the improvising session, the ‘composition’ will be saved on the instrument site, along with the personalized instrument. In this way, each user of the Amusement Center will leave behind him a unique instrumental creation, that others who visit the Center later will be able to play on and listen to. The fully creative experience of making a new instrument can be obtained connecting to Active Worlds world ‘Amuse’ and ‘Amuse2’.Animated colorful sounding objects can be assembled by the user in the Virtual Environment as a sort of sounding instrument. We refrain here deliberately from using the word musical instrument, because the level of control we have on the sound in terms of rythm and melody, among other parameters, is very limited. It resembles instead, very closely, to the primitive instruments used by humans in some civilizations or to the experience made by children making sound out of ordinary objects. The dimension of cooperation is of paramount importance in the process of building and using the virtual sounding instrument. The instrument can be built on ones own effort but preferably by a team of cooperating users. The cooperation has as an important corolary: the sharing of the experience. The shared experience finds its permanence in the collective memory of the sounding instruments built. The sounding instrument can be seen also as a virtual sculpture, indeed this sculpture is a multimedial one. The objects have properties that ranges from video animation to sound to virtual physical properties like solidity. The role of the user representation in the Virtual World, called avatar, is important because it conveys, among other things, the user’s emotions. It is worth pointing out that the Avatar has no emotions on its own but it simply expresses the emotions of the user behind it. In a way it could be considered a sort of actor performing the script that the user gives it in real-time while playing.The other important element of the integration is related to the memory of the experience left by the user into the Virtual World. The new layout is explored and experienced. The layout is a permanent editable memory. The generative aspects of Let's improvise together are the following.The multi-media virtual sculpture left behind any participating avatar is not the creation of a single author/artist. The outcome of the sinergic interaction of various authors is not deterministic, nor predictable. The authors can indeed use generative algorythm in order to create the texture to be used on the objects. Usually, in our experience, the visitors of the Amuse worlds use shareware programs in order to generate their texture. In most cases the shareware programs are simple fractals generators. In principle, it is possible to generate also the shape of the object in a generative way. Taking into account the usual audience of our world, we expected visitors to use very simple algorythm that could generate shapes as .rwx files. Indeed, noone has attempted to do so insofar. As far as the music is concerned, the availability of shareware programs that allow simple generation of sounds sequences has made possible, for some users, to generate sounds sequences to be put in our world. In conclusion, the Let's improvise section of the Amuse worlds could be open for experimentation on generative art as a very simple entry point platform. We will be very happy to help anybody that for educational purposes would try to use our platform in order to create and exhibit generative forms of art.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	ga0020
id	ga0020
authors	Codignola, G.Matteo
year	2000
title	[Title missing]
source	International Conference on Generative Art
summary	This paper is a summary of my last degree in architecture (discussed in December 1999) with Prof. Celestino Soddu and Prof. Enrica Colabella. In this work I had the possibility to reach complexity by a generative approach with the construction of a paradigm that organizes the different codes of project identity. My general objective was to design shape complexity in variable categories : 3d space surfaces, 2d drawings and 2d textures. I was to discover the identity of one of my favourite architects of the 20th century : Antoni Gaudì, by constructing codes relative to shape complexity. I defined my particular objective in the possibility to abduct from Gaudì's imaginary reference the generatives codes that operate in the logical processing I use to create a possible species project. The next step was to verify the exact working of the new generative codes by means of 3d scenaries, that are recognizable as "Antoni Gaudì specie's architecture". Whit project processing on the generative codes and not on a possible resulting shape design, I was able to organize by my general paradigm the attributes of the project's species : different shapes, different attributes (color, scale, proportion), to get to possible and different scenarys, all recognizable by the relative class codes. I chose three examples in Barcellona built during the period 1902 to 1914 : The Parco Guell, Casa Batllò and Casa Milà are the three reference sceneryes that I used to create the generative codes. In the second step I defined different codes that operate in sequence (it is defined in the paradigm) : The generatives codes are only subjective; they are one possible solution of my interpretation of Antoni Gaudì's identity. This codes operate in four differents ways : Geometrical codes for 2d shapes Geometrical codes for interface relations Spatial codes for 3d extrusion of 2d shapes Geometrical codes for 2d and 3d texturing of generated surfaces. By a stratified application of this codes I arrived at one idea for all the generative processes but many different, possible scenaryes, all recognizable in Gaudì's species. So, my final result has made possible sceneryes belonging to related species defined previously. At the end of my research I designed a project by combination : using Antoni Gaudì's generative codes on a new 3d scenary with a shape catalyst : the Frank Lloyd Wright Guggenheim Museum of New York. In this process I created a "hybrid scenary" : a new species of architectural look; a Guggenheim museum planned by Wright with a god pinch of Gaudì.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	2076
authors	Holmgren, Steen and Rüdiger, Bjarne
year	1999
title	IT in Urban Regeneration Projects
doi	https://doi.org/10.52842/conf.ecaade.1999.708
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 708-713
summary	This paper is about the development of new tools for the residents to use for participation in the planning process and by the professional generating proposals for projects. It deals with two actual research projects, which might be described as transition projects. The projects are Digital 3D City Model of Copenhagen and Urban Architecture in Urban Renewal, - in dialogue between professionals and residents. These projects take their point of departure in the architects traditional working methods and working tools, but they focus on new methods for the dialogue between professionals and inhabitants and on a new visual language based on the digital technology. In this transition situation we see the educated architect as well as the politician and the inhabitant as students in a common learning process. In the end of the paper we introduce a planned project about IT in Urban Renewal. The project is based on an ongoing governmental experiment with involving inhabitants actively in the renewal of their urban area. This project is intended to combine dialogue methods with the use of interactive 3D-digital City models on the Internet.
keywords	3D City modeling, Urban Regeneration, Participation, Dialogue Method, 3D Digital City Model, Urban Architecture
series	eCAADe
email
last changed	2022/06/07 07:50

_id	39cb
authors	Kelleners, Richard H.M.C.
year	1999
title	Constraints in object-oriented graphics
source	Eindhoven University of Technology
summary	In the area of interactive computer graphics, two important approaches to deal with the complexity of designing and implementing graphics systems are object-oriented programming and constraint-based programming. From literature, it appears that combination of these two has clear advantages but has also proven to be difficult. One of the main problems is that constraint programming infringes the information hiding principle of object-oriented programming. The goal of the research project is to combine these two approaches to benefit from the strengths of both. Two research groups at the Eindhoven University of Technology investigate the use of constraints on graphics objects. At the Architecture department, constraints are applied in a virtual reality design environment. At the Computer Science department, constraints aid in modeling 3D animations. For these two groups, a constraint system for 3D graphical objects was developed. A conceptual model, called CODE (Constraints on Objects via Data flows and Events), is presented that enables integration of constraints and objects by separating the object world from the constraint world. In the design of this model, the main aspect being considered is that the information hiding principle among objects may not be violated. Constraint solvers, however, should have direct access to an object’s internal data structure. Communication between the two worlds is done via a protocol orthogonal to the message passing mechanism of objects, namely, via events and data flows. This protocol ensures that the information hiding principle at the object-oriented programming level is not violated while constraints can directly access “hidden” data. Furthermore, CODE is built up of distinct elements, or entity types, like constraint, solver, event, data flow. This structure enables that several special purpose constraint solvers can be defined and made to cooperate to solve complex constraint problems. A prototype implementation was built to study the feasibility of CODE. Therefore, the implementation should correspond directly to the conceptual model. To this end, every entity (object, constraint, solver) of the conceptual model is represented by a separate process in the language MANIFOLD. The (concurrent) processes communicate by events and data flows. The implementation serves to validate the conceptual model and to demonstrate that it is a viable way of combining constraints and objects. After the feasibility study, the prototype was discarded. The gained experience was used to build an implementation of the conceptual model for the two research groups. This implementation encompassed a constraint system with multiple solvers and constraint types. The constraint system was built as an object-oriented library that can be linked to the applications in the respective research groups. Special constructs were designed to ensure information hiding among application objects while constraints and solvers have direct access to the object data. CODE manages the complexity of object-oriented constraint solving by defining a communication protocol to allow the two paradigms to cooperate. The prototype implementation demonstrates that CODE can be implemented into a working system. Finally, the implementation of an actual application shows that the model is suitable for the development of object-oriented software.
keywords	Computer Graphics; Object Oriented Programming; Constraint Programming
series	thesis:PhD
last changed	2003/02/12 22:37

_id	41d4
authors	Medjdoub, Benachir
year	1999
title	Interactive 2D Constraint-Based Geometric Construction System
source	Proceedings of the Eighth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-8536-5] Atlanta, 7-8 June 1999, pp. 197-212
summary	This paper presents a 2D Constraint-Based Geometric Construction System where positioning and manipulating geometry is very precise. An unusually simple interface makes this system particularly interactive and easy to use. In our approach, the geometry types supported are: points, lines, circles, ellipses, circular arcs and b-spline curves. All the fundamental topologic constraints, i.e. tangent, parallel, perpendicular, coincident and concentric, are provided. Metric constraints, i.e. dividing the shapes into equal parts or fixing the geometric parameters, are also provided. These constraints are automatically applied by the application in response to the implied intentions of the end- user. Dynamic modifications of partially dimensioned models are supported, whereby the design is modified while enforcing the constraints. A graph-constructive approach is used to solve the model. As we are dealing with partial modifications, this resolution technique is quite sufficient, and makes our system stable and flexible. Our approach focuses highly on interactivity. Positioning a shape constrained to another is made directly through the graphic interface. Constraint relaxation is also done by direct manipulations. Modifications are made by dragging the geometry, or by typing into a numerical panel displaying the free shape parameters. Again, existing constraints are maintained as those numbers are applied. Well -constrained and under-constrained problems are discussed. This approach was developed in Java, JDK 3.0.1 of SGI's Java software.
keywords	Sketching, Geometric Constraints, Interactivity, Geometric construction, Dynamic Modifications
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	cd0b
authors	Meloni, Wanda
year	2001
title	The Slow Rise of 3D on the Web
source	Computer Graphics Worlds - July 2001, p. 22
summary	Consumer, commercial, and educational applications on the Web have been slow to take advantage of 3D, although for years it has been viewed as a boon for the graphics industry. Over the last 18 months, the situation has begun to look more favorable for the graphics industry, reports M2 Research's Wanda Meloni. Meloni says changes in the market and in technology have fueled the rise of 3D on the Web. The increase in broadband connections from 2.7 million users in 1999 to 8 million users in 2000 means that the market of consumers who have Internet connections fast enough to view and interact with 3D content has grown considerably. Also, 3D players are no longer limited to a proprietary format now that new game consoles from Nintendo and Microsoft will offer Web-based real-time 3D multiplayer gaming; in addition, 3D graphics technology will now be embedded into applications for Internet appliances and handheld devices. M2 Research estimates that the number of Web media players that are 3D-enabled will rise from 17 percent currently to 32 percent by the end of the year, as 3D player vendors offer more direct support to 2D players such as RealPlayer and Shockwave. Still, content production will remain a major hurdle because millions of Web authors are not using 3D. Meloni says creative professionals and digital designers will need a new set of 3D tools that will work seamlessly with current Web content in video, 2D graphics, and audio.
series	journal paper
last changed	2003/04/23 15:50

_id	2dc4
authors	Ng, E., Lam, K.P., Wu, W., Nagakura T.
year	1999
title	The application of computer simulation techniques to the design and preservation of a national monument
source	IBPSA, Kyoto, vol 2, 555-562
summary	The paper outlines a two-year research program where Radiance was used in the conversion of Empress Place, a national monument in Singapore, into an Asian Civilisation Museum. The paper describes how the research team fine-tune the modeling and software settings to cope with some of the contextual issues of design. Inaddition, the paper discusses how Radiance could be used to aid the design of the building. One of the more difficult tasks the researchers faced was to model and validate some of the daylighting control devices that are part of the existing features of the building. And to design new control devices that are architecturally consistent with the building. Working with the design team, options and strategies are studied. At the end, contrary to the original beliefs of the architect, and much to the liking of the curator, it has been demonstrated that, carefully designed, daylighting could be introduced into the gallery and that it will enhance the quality of the interior spaces. The building is currently under construction.
series	other
last changed	2003/04/23 15:50

_id	2c4a
authors	Aroztegui, Carmen
year	1999
title	The Architect's Use of the Internet - Study of the Architectural Presentation Possibilities
source	III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 363-368
summary	The Internet media is opening new horizons in communication and representation in architecture. However, its use today is superficial, limited, and without creativity. This study will explore theories, methods and examples of how the virtual space of the Internet can be used in its full potential. That means to present ways of observing, understanding, interacting, and communicating the space without precedents in architecture. The existent presentations made by architects in the Internet are in general poor and static. Through the comparative analysis of two presentations of the same architectural space in the Internet and the use of state of the art technology in the Internet, this study will show innovations that will make the exploration of the architectural space more attractive, dynamic and interactive. The main issues will be on one hand, the improvement in the communication of the design through the use of the Internet, and on the other hand, the rise of the standards in the quality of the architectural presentations. This work will project possible implications of the Internet in architecture.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	f317
authors	Arvin, Scott A. and House, Donald H.
year	1999
title	Modeling Architectural Design Objectives in Physically Based Space Planning
doi	https://doi.org/10.52842/conf.acadia.1999.212
source	Media and Design Process [ACADIA ‘99 / ISBN 1-880250-08-X] Salt Lake City 29-31 October 1999, pp. 212-225
summary	Physically based space planning is a means for automating the conceptual design process by applying the physics of motion to space plan elements. This methodology provides for a responsive design process, which allows a designer to easily make decisions whose consequences immediately propagate throughout the design. It combines the speed of automated design methods with the flexibility of manual design methods, while adding a highly interactive quality and a sense of collaboration with the design itself. In our approach, the designer creates a space plan by specifying and modifying graphic design objectives rather than by directly manipulating primitive geometry. The plan adapts to the changing state of objectives by applying the physics of motion to its elements. For design objectives to have an effect on a physically based space plan, they need to be able to apply appropriate forces to space plan elements. Space planning can be separated into two problems, determining topological properties and determining geometric properties. Design objectives can then be categorized as topological or geometric objectives. Topological objectives influence the location of individual spaces, affecting how one space relates to another. Geometric objectives influence the size and shape of space boundaries, affecting the dimensions of individual walls. This paper focuses on how to model a variety of design objectives for use in a physically based space planning system. We describe how topological objectives, such as adjacency and orientation, can be modeled to apply forces to space locations, and how geometric objectives, such as area, proportion, and alignment, can be modeled to apply forces to boundary edges.
series	ACADIA
email
last changed	2022/06/07 07:54

For more results click below: