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

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 Benachir.Medjdoub@nottingham.ac.uk
full text file.pdf (1,595,416 bytes)
references Content-type: text/plain
details citation check to select
100%; open Aish, R. (1992) Find in CUMINCAD Computer-Aided Design Software to Augment the Creation of Form , computer in Architecture, 97-104, Longman, London
100%; open Alasdair, S., (et. al.) (1993) Find in CUMINCAD Constraint Definition System: a Computer-Algebra Based Approach to Solving Geometric-Constraint Problem , Computer Aided Design, 25 (12) 741-750
100%; open Aldefeld, B. (1988) Find in CUMINCAD Variation of Geometries Based on a Geometric-Reasoning Method , Computer Aided Design, 20 (3) 117-126
100%; open Andre, G.P. (et. al.) (1992) Find in CUMINCAD Computer Aids For Design Development , Computer in Architecture, 15-24, Longman, London
100%; open Borning, A. and Maher, M. (et. al.) (1989) Find in CUMINCAD Constraints Hierarchies and Logic Programming , Proc. Of the 6th Intemational Logic Programming Conference, 149-164
100%; open Borning, A.H. (1981) Find in CUMINCAD The Programming Language Aspects of ThingLab, a Constraint Oriented Simulation Laboratory , ACM TOPLAS, 3 (4) 353-387
100%; open Bouma, W., (et. al.) (1995) Find in CUMINCAD A Geometric Constraint Solver , Computer Aided Design, 27 487501
100%; open Bruderlin, B. (1986) Find in CUMINCAD Constructing Three Dimensional Geometric Objects Defined by Constraints , Workshop on Interactive 3D Graphics A CM, I 11- 129
100%; open Buchberger, B. (1988) Find in CUMINCAD Algebraic Methods for Geometric Reasoning , Annual Reviews in Computer Science, 3 85-120
100%; open Dohmen, M. (1995) Find in CUMINCAD A Survey of Constraint Satisfaction Techniques for Geometric Modeling , Computer & Graphics 19 (6) 831-845
100%; open Fudos, I. and Hoffmann, C.M. (1993) Find in CUMINCAD Correctness Proof of a Geometric Constraint Solver , Technical Report CSD-TR-93-076, Department of Computer Sciences, Purdue University
100%; open Fudos, I. (1993) Find in CUMINCAD Editable Representations for 2D Geometric Design , Master of Science Thesis, Purdue University
100%; open Gao, X.S. and Chou, S.C. (1998) Find in CUMINCAD Solving Geometric Constraint System, II. A Symbolic Approach and Decision of Re-constructability, , Computer Aided Design, 30 (2) 115-122
100%; open Gao, X.S. and Chou, S.C. (1998) Find in CUMINCAD Solving Geometric Constraint Problems. I. A global propagation approach , Computer Aided Design, 30 (1) 47-54
100%; open Heydon, A. and Nelson, G. (1994) Find in CUMINCAD The Juno-2 Constraint-based Drawing Editor , SRC Research Report 131a
100%; open Kondo, K. (1990) Find in CUMINCAD PIGMOD: Parametric and Interactive Geometric Modeller for Mechanical Design , Computer Aided Design, 22 (10) 633-644
100%; open Kramer, G. (1992) Find in CUMINCAD Solving Geometric Constraint Systems , (MIT Press)
100%; open Light, R. and Gossard, D. (1982) Find in CUMINCAD Modification of Geometric Models Through Variational Geometry , Computer Aided Design, 14 (4) 209-214
100%; open Owen, J.C. (1991) Find in CUMINCAD Algebraic Solution for Geometry from Dimensional Constraints , ACM Symp. Found. of Solid Modeling, Austin TX, 397-407
100%; open Requicha, A. (1977) Find in CUMINCAD Dimensioning and tolerancing , Technical report, Production Automation Project, University of Rochester, PADL TM-19.

last changed 2006/11/07 06:22
HOMELOGIN (you are user _anon_575673 from group guest) Works Powered by SciX Open Publishing Services 1.002