- Email: [email protected]
Constructing a triangulated surface model from surface measurements
has remained a practising Architect, he has been involved with CAAD for over twelve years.
ISAAC: a technique for the automatic interpretation o f spaces from d r a w n b u i l d i n g f l o o r plans
programmer where he is working with the GABLE c o m p u t e r aided design research unit.
GEOMETRIC MODELLING
B R Lawson and J P Riley (Department of Architecture, University of Sheffield, UK) In this paper we shall describe part of the GABLE computer aided architectural design system developed at Sheffield University. This system, written in BASIC to run on Tektronix 4050 series desktop computers is intended to be capable of being used even in the smallest design office without the need for specialist staff. In particular we shall show how GABLE allows the user to input a building from a series of simply drawn floor plans jn such a way that ISAAC is able automatically to develop a three dimensional model of the inside of each space. We shall show how this system is sufficiently general to accommodate buildings irregular both in plan and section without the need for any restrictive planning grids. Bryan Lawson studied at the Oxford School of Architecture. He has taught interior and industrial and systems design as well as architecture, and is currently lecturing at the Sheffield University Department of Architecture where he also directs the GABLE CAD research unit.
R O D I N - a system o f m o d e l l i n g t h r e e dimensional r o o f forms J P Riley and B R Lawson (Department of Architecture, University of Sheffield, UK) This paper describes part of the GABLE computer aided architectural design system developed at Sheffield University. This system, written in BASIC to run on Tektronix 4050 series desktop computers is intended to be capable of being used even in the smallest design office without the need for specialist staff. We will show how a roof may be described to the system from a roughly drawn roof plan together with pitches of roof planes and heights of points within the roof in whatever combination is most convenient for the user. RODIN will check the consistency of the information which is given and use it to construct a geometrically correct three dimensional model of the roof. The system imposes no restriction on the type of roof which may be modelled. Patrick Riley has a background of research in pure and applied science. He joined the Department of Architecture in the University of Sheffield in 1979 as a computer
114
Research o n 3 D g e o m e t r i c m o d e l l i n g b y sweep p r i m i t i v e s Y Shiroma, N Okino and Y Kakazu
(Hokhaldo University, Japan) This paper proposes a new modelling method for special mechanical part geometry, such as a coil or a bend, as well as ordinary mechanical ones. The new method is called the 'sweep primitive m e t h o d ' because it constructs a volumetric primitive by a sweep operation. The method of developing a sweep primitive is as follows: to set a secondary pattern as the spine of the sweeping/trajectory curve and to sweep the primary pattern of the plane along the secondary pattern. A set operation is adopted to model the part geometry by combining sweep primitives together with ordinary volumetric primitives. Y Shiroma is a Research Associate, Faculty of Engineering, Hokkaido University, Japan. His current interest is geometric modelling in CAD/CAM, especially R&D aspects of how to model an environment of the moving solid object. Dr N Okino is Professor, Faculty of Engineering, Hokkaido University, Japan. He is one of the pioneers of CAD/CAM in Japan and his main activity is R&D of the 3D CAD/CAM system: TIPS-1 and TIPS-2. Dr Y Kakazu is Associate Professor, Faculty of Engineering, Hokkaido University, Japan. His interests cover a wide field in engineering. Currently his main interest is robotics.
Graphical i n p u t to a Boolean solid modeller J R Woodwark and A F Wallis (University of
Bath, UK) This paper describes a technique for processing sketch input into a form suitable for a Boolean solid modeller. It allows the user to input one or more 2D profiles which may be interpreted as plates, plates with a draft angle, or (facetted) 'turned parts'. The method produces an efficient decomposition of the input profiles into half-spaces, related by an operator tree. In this form the shapes may be combined into larger models using a language.
Andy Wallis did his first degree at Bath University, where he has been working towards a higher degree since 1980.
For J R Woodwark's biography see the paper 'A spatially-segmented solids database - justification and design' in the databases section. SAMMIE - 3D modelling for human factors e v a l u a t i o n E C Kingsley (Compeda, UK) Among the many different computer-aided 3D modelling systems that have become commercially available in the last five years, only one has been developed specifically for carrying out human factors evaluations. SAMMIE (System for Aiding Man-Machine Interaction Evaluation) is a workplace modelling system that contains a sophisticated 3D computerized man-model. This paper describes the facilities available in SAMMIE for evaluating the man-model's visual field, reach capability and fit in a wide range of different applications. Eliot Kingsley graduated at UWIST in Applied Psychology and Ergonomics before several years experience as an ergonomist in the mining industry. He is now a senior consultant with Compeda Ltd.
C o n s t r u c t i n g a t r i a n g u l a t e d surface m o d e l f r o m surface m e a s u r e m e n t s Y c Choong, D Graham and J R Woodwark
(University of Bath, UK) As part of a long term research project into the development of a robotic device for the automated surface finishing of die cast components it has been necessary to develop a suitable method for describing the component geometry. This paper presents the resulting novel heuristic technique for constructing a triangulated surface model from component measurements. Y C Choong obtained his first degree at the University of Bath. He is now working at Bath towards a higher degree on a robotics project supported by the SERC and WalkerCrosweller Ltd. David Graham did his PhD at Leeds University. Since 1973 he has been a lecturer in the Manufacturing Group in the School of Engineering at the University of Bath. His main research interests are in the field of robotics. For J R Woodwark's biography see the paper 'A spatially-segmented solids database - justification and design' in the databases section.
c o m p u t e r - a i d e d design
ISAAC: a technique for the automatic interpretation o f spaces from d r a w n b u i l d i n g f l o o r plans
programmer where he is working with the GABLE c o m p u t e r aided design research unit.
GEOMETRIC MODELLING
B R Lawson and J P Riley (Department of Architecture, University of Sheffield, UK) In this paper we shall describe part of the GABLE computer aided architectural design system developed at Sheffield University. This system, written in BASIC to run on Tektronix 4050 series desktop computers is intended to be capable of being used even in the smallest design office without the need for specialist staff. In particular we shall show how GABLE allows the user to input a building from a series of simply drawn floor plans jn such a way that ISAAC is able automatically to develop a three dimensional model of the inside of each space. We shall show how this system is sufficiently general to accommodate buildings irregular both in plan and section without the need for any restrictive planning grids. Bryan Lawson studied at the Oxford School of Architecture. He has taught interior and industrial and systems design as well as architecture, and is currently lecturing at the Sheffield University Department of Architecture where he also directs the GABLE CAD research unit.
R O D I N - a system o f m o d e l l i n g t h r e e dimensional r o o f forms J P Riley and B R Lawson (Department of Architecture, University of Sheffield, UK) This paper describes part of the GABLE computer aided architectural design system developed at Sheffield University. This system, written in BASIC to run on Tektronix 4050 series desktop computers is intended to be capable of being used even in the smallest design office without the need for specialist staff. We will show how a roof may be described to the system from a roughly drawn roof plan together with pitches of roof planes and heights of points within the roof in whatever combination is most convenient for the user. RODIN will check the consistency of the information which is given and use it to construct a geometrically correct three dimensional model of the roof. The system imposes no restriction on the type of roof which may be modelled. Patrick Riley has a background of research in pure and applied science. He joined the Department of Architecture in the University of Sheffield in 1979 as a computer
114
Research o n 3 D g e o m e t r i c m o d e l l i n g b y sweep p r i m i t i v e s Y Shiroma, N Okino and Y Kakazu
(Hokhaldo University, Japan) This paper proposes a new modelling method for special mechanical part geometry, such as a coil or a bend, as well as ordinary mechanical ones. The new method is called the 'sweep primitive m e t h o d ' because it constructs a volumetric primitive by a sweep operation. The method of developing a sweep primitive is as follows: to set a secondary pattern as the spine of the sweeping/trajectory curve and to sweep the primary pattern of the plane along the secondary pattern. A set operation is adopted to model the part geometry by combining sweep primitives together with ordinary volumetric primitives. Y Shiroma is a Research Associate, Faculty of Engineering, Hokkaido University, Japan. His current interest is geometric modelling in CAD/CAM, especially R&D aspects of how to model an environment of the moving solid object. Dr N Okino is Professor, Faculty of Engineering, Hokkaido University, Japan. He is one of the pioneers of CAD/CAM in Japan and his main activity is R&D of the 3D CAD/CAM system: TIPS-1 and TIPS-2. Dr Y Kakazu is Associate Professor, Faculty of Engineering, Hokkaido University, Japan. His interests cover a wide field in engineering. Currently his main interest is robotics.
Graphical i n p u t to a Boolean solid modeller J R Woodwark and A F Wallis (University of
Bath, UK) This paper describes a technique for processing sketch input into a form suitable for a Boolean solid modeller. It allows the user to input one or more 2D profiles which may be interpreted as plates, plates with a draft angle, or (facetted) 'turned parts'. The method produces an efficient decomposition of the input profiles into half-spaces, related by an operator tree. In this form the shapes may be combined into larger models using a language.
Andy Wallis did his first degree at Bath University, where he has been working towards a higher degree since 1980.
For J R Woodwark's biography see the paper 'A spatially-segmented solids database - justification and design' in the databases section. SAMMIE - 3D modelling for human factors e v a l u a t i o n E C Kingsley (Compeda, UK) Among the many different computer-aided 3D modelling systems that have become commercially available in the last five years, only one has been developed specifically for carrying out human factors evaluations. SAMMIE (System for Aiding Man-Machine Interaction Evaluation) is a workplace modelling system that contains a sophisticated 3D computerized man-model. This paper describes the facilities available in SAMMIE for evaluating the man-model's visual field, reach capability and fit in a wide range of different applications. Eliot Kingsley graduated at UWIST in Applied Psychology and Ergonomics before several years experience as an ergonomist in the mining industry. He is now a senior consultant with Compeda Ltd.
C o n s t r u c t i n g a t r i a n g u l a t e d surface m o d e l f r o m surface m e a s u r e m e n t s Y c Choong, D Graham and J R Woodwark
(University of Bath, UK) As part of a long term research project into the development of a robotic device for the automated surface finishing of die cast components it has been necessary to develop a suitable method for describing the component geometry. This paper presents the resulting novel heuristic technique for constructing a triangulated surface model from component measurements. Y C Choong obtained his first degree at the University of Bath. He is now working at Bath towards a higher degree on a robotics project supported by the SERC and WalkerCrosweller Ltd. David Graham did his PhD at Leeds University. Since 1973 he has been a lecturer in the Manufacturing Group in the School of Engineering at the University of Bath. His main research interests are in the field of robotics. For J R Woodwark's biography see the paper 'A spatially-segmented solids database - justification and design' in the databases section.
c o m p u t e r - a i d e d design