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Reparameterizing Tectonics Perception on Planar Material-Design

Stephanus Evert Indrawan, Gervasius Herry Purwoko, Tri Noviyanto P. Utomo
2019 International Journal of Creative and Arts Studies  
This paper also presents the results of a studythat has involved digital perception in the study of planar materials and wafflestructure systems from the early stages to the model of construction.  ...  Computers are still usedas tools for drawing and not used as design tools in the design thinking process.Computational design has an ability to integrating the design focus from thematerial side, structure  ...  Parametric Design approach using the principles of UV Mapping to apply geometry onto surface (Murdock, 2008) .  ... 
doi:10.24821/ijcas.v6i1.3276 fatcat:77bdgy6p6bb6labsatg3nrxza4

A parametric strategy for free-form glass structures using quadrilateral planar facets

James Glymph, Dennis Shelden, Cristiano Ceccato, Judith Mussel, Hans Schober
2004 Automation in Construction  
This paper describes ongoing research on the constructability of such structures using planar quadrilateral glass facets for the Jerusalem Museum of Tolerance project by Gehry Partners, in collaboration  ...  The challenge here lies not only in the development of a geometric strategy for generating quadrilateral planar facet solutions, but also in the fact that said solutions must closely match the designs  ...  In the following section, simple methods are presented for creating an almost unlimited multitude of shapes for double-curved surfaces with planar quadrangles. Figure 5.  ... 
doi:10.1016/j.autcon.2003.09.008 fatcat:6r6qntexjjaupci6y4dvc5kaqe

Sketch Based Design of 2D and 3D Freeform Geometry

Masha Nikolski, Gershon Elber
2009 Computer-Aided Design and Applications  
We present an interface for intuitive creation and modification of 2D and 3D freeform, spline based, geometry.  ...  As we consider Boolean operations counter-intuitive for novice users, a direct modeling scheme of complex freeform geometry of similar power is proposed as an alternative.  ...  Carrying the underneath surface as part of the representation, the Euclidean locations could always be recovered from the parametric representation as S x (u, v), S y (u, v), S z (u, v)).  ... 
doi:10.3722/cadaps.2009.157-166 fatcat:2ed22lhstndy7gj3seu2hbcijy

3D NURBS-enhanced finite element method (NEFEM)

Ruben Sevilla, Sonia Fernández-Méndez, Antonio Huerta
2011 International Journal for Numerical Methods in Engineering  
NEFEM is able to exactly represent the geometry of the computational domain by means of its CAD boundary representation with Non-Uniform Rational B-Splines (NURBS) surfaces.  ...  Specific strategies for interpolation and numerical integration are presented for those elements affected by the NURBS boundary representation.  ...  Basic concepts on NURBS surfaces are recalled in this section, see [6] for a complete presentation.  ... 
doi:10.1002/nme.3164 fatcat:bcdrxhx4ezhbjayknq3zwu3sym

The Problem of Naming Shapes: Vision-Language Interface

Ruzena Bajcsy, Aravind K. Joshi
1978 Theoretical Issues In Natural Language Processing  
In general, shape of a 3-D compact object has two aspects: the surface aspect, and the volume " The surface aspect includes properties ncavity, convexity, planarity of surfaces, edges, and corners.  ...  Surface and Volume In this section, we will investigate the relationship between the surface aspect and the volume aspect from the developmental point of view and from the needs of a recognition process  ... 
dblp:conf/tinlap/BajcsyJ78 fatcat:63erhbjolff67eamwsidq6imam

B-rep SE: Simplicially Enhanced Boundary Representation [article]

M. Freytag, V. Shapiro
2004 Solid Modeling  
Boundary representation (B-rep) is a popular representation scheme for mechanical objects due to its ability to accurately represent piecewise smooth surfaces bounding solids.  ...  However, non-trivial topology and geometry of the surface patches hinder point generation, classification, searching, and other algorithms.  ...  The boundary representation for artifacts in engineering applications is usually conceptualized as a cell complex in 3 with faces represented by trimmed parametric surfaces, edges by parametric curve segments  ... 
doi:10.2312/sm.20041386 fatcat:4trkhkqovvcbjkewskmkiciyle

Performance Based Interactive Analysis [chapter]

Odysseas Georgiou, Paul Richens, Paul Shepherd
2011 Computational Design Modelling  
The combination of these tools and their parametric control contributes to a new design approach that outrides the generation of single solutions and enables a deeper exploration of the design parameters  ...  This paper re-approaches structural engineering through an interactive perspective by introducing a series of tools that combine parametric design with structural analysis, thus achieving a synergy between  ...  For clarity and in order to prove the feasibility of the proposed optimisation technique, a rectangular planar surface is used instead of the free-form surface shown in the previous paragraph.  ... 
doi:10.1007/978-3-642-23435-4_14 fatcat:zc76mk2ryre6bammktlccv6l6e

A diabatic three-state representation of photoisomerization in the green fluorescent protein chromophore

Seth Olsen, Ross H. McKenzie
2009 Journal of Chemical Physics  
At planar geometries, the diabatic picture recaptures the charge transfer resonance of the anion.  ...  We give a quantum chemical description of bridge photoisomerization reaction of green fluorescent protein (GFP) chromophores using a representation over three diabatic states.  ...  Smith, for helpful discussions. We also thank J.R. Reimers and M.J.T. Jordan for many constructive suggestions on a draft manuscript.  ... 
doi:10.1063/1.3121324 pmid:19449916 fatcat:ox4dpklg45gnpj73xry25z2nhy


F. Diara, F. Rinaudo
2019 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
and how they could integrate their tools for the purpose of managing dynamic high detailed data for the creation of an HBIM platform.  ...  This kind of modelling of Cultural Heritage assets, fundamental for HBIM creation, need to be correctly planned especially for classification and definition of its historical features connected to an informative  ...  Figure 5 . 5 From profiles of planar sections to a custom NURBS spar profile Figure 6 .Figure 7 . 67 Modelling of the rib vault: patch tool for vaults and sweep tool for ribs Final NURBS model of the  ... 
doi:10.5194/isprs-archives-xlii-2-w15-413-2019 fatcat:rf6wgpbybvcshp6slqoi23bdxu

Interactive curve design using digital French curves

Karan Singh
1999 Proceedings of the 1999 symposium on Interactive 3D graphics - SI3D '99  
Algorithmically, the contributions of this paper are twofold. We describe an efficient technique for approximating a planar parametric curve by a small set of elliptic arcs.  ...  We also describe a simple approach to smoothly replace sections of design curves with sections of the French curve.  ...  We would also like to thank Eugene Fiume and Gord Kurtenbach for their guidance and assistance with the writing of this paper and Jerome Maillot, George Fitzmaurice and Ravin Balakrishnan for their comments  ... 
doi:10.1145/300523.300525 dblp:conf/si3d/Singh99 fatcat:4pvby2sifracrbdmjkwbssuhsm

Biquartic C1-surface splines over irregular meshes

Jörg Peters
1995 Computer-Aided Design  
That is, the mesh points serve as control points of a smooth piecewise polynomial surface representation that is local and evaluates by averaging.  ...  The splines generalize the construction of C 1 surfaces from tensor-product B-spline control points to a wider class of control meshes capable of outlining arbitrary free-form surfaces in space.  ...  For given connectivity and shape parameters, the surface spline form a vector space of geometrically smooth surface parametrizations.  ... 
doi:10.1016/0010-4485(95)00010-0 fatcat:hv3dalosrjgevaoeiipquqwuua

Ontology-Based Semantic Conceptualisation of Historical Built Heritage to Generate Parametric Structured Models from Point Clouds

Elisabetta Colucci, Xufeng Xing, Margarita Kokla, Mir Abolfazl Mostafavi, Francesca Noardo, Antonia Spanò
2021 Applied Sciences  
Committee for Documentation conceptual reference model (CIDOC-CRM), Industry Foundation Classes (IFC), Getty Art and Architecture Thesaurus (AAT), as well as reasoning about morphology of historical centres  ...  as an effective approach for the formal conceptualisation of application domains.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app11062813 fatcat:sj4avlkpzjb35jpmzbjg6yj4u4

Distance functions and skeletal representations of rigid and non-rigid planar shapes

Ata A. Eftekharian, Horea T. Ilieş
2009 Computer-Aided Design  
We use our approximate distance functions to define a new type of skeleton, i.e, the C-skeleton, which is piecewise linear for polygonal domains, generalizes naturally to planar and spatial domains with  ...  However, exact computation of these skeletons of even fairly simple planar shapes remains an open problem.  ...  All 3D examples were created by using Parasolid and Unigraphics, courtesy of Siemens PLM.  ... 
doi:10.1016/j.cad.2009.05.006 fatcat:tx2xx6c2rvbe7lhlvtx6salocm

Programmed design of ship forms

A. Rodríguez, L. Fernández-Jambrina
2012 Computer-Aided Design  
For instance, the development of specialized parametric hull form generators for a ship type or a family of ships or the creation of palettes of hull form components to be used as parametric design patterns  ...  These levels are the conceptual level based on the design language, the mathematical level based on the geometric formulation of the product model and the visual level based on the polyhedral representation  ...  Longitudinal curves which control the parametric distribution of design sections are also very meaningful for the designer as it is for example the sectional area curve.  ... 
doi:10.1016/j.cad.2012.03.003 fatcat:4mpotudxe5c2zc3wzn46atimfi

Approximate Implicitization Using Monoid Curves and Surfaces

Thomas W. Sederberg, Jianmin Zheng, Kris Klimaszewski, Tor Dokken
1999 Graphical Models and Image Processing  
This paper presents an approach to nding an approximate implicit equation and an approximate inversion map of a planar rational parametric curve or a rational parametric surface.  ...  The monoids are expressed in exact implicit and parametric equations simultaneously, and upper bounds are derived for the approximate errors of implicitization and inversion equations.  ...  The second author is also supported by Doctoral Science Foundation of China.  ... 
doi:10.1006/gmip.1999.0497 fatcat:zyrvkpv4ine4nfqbgkt53y3n7y
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