Direct Manipulation of Feature Models in Web-Based Collaborative Design

2004 ◽  
Author(s):  
Rafael Bidarra ◽  
Andre´ van Bunnik ◽  
Willem F. Bronsvoort
Keyword(s):  
Collaborative Design ◽  
Feature Model ◽  
Feature Models ◽  
Direct Manipulation ◽  
Model Data ◽  
Web Based ◽  
New Approach ◽  
Client Server ◽  
Collaborative Modeling ◽  
Interactive Feature

Providing advanced 3D interactive facilities to users of a client-server collaborative modeling system presents a great challenge when thin clients are involved, mainly due to their lack of both a full-fledged CAD model and adequate modeling and solving functionalities. This paper presents a new approach that provides a convenient representation of feature model data suitable for direct manipulation of feature models at such clients. In particular, feature handles are proposed to support interactive feature editing. This approach combines all advantages of a thin client approach with the sort of 3D direct manipulation facilities usually only found in powerful standalone CAD systems.

A Collaborative Feature Modeling System

2002 ◽  
Vol 2 (3) ◽  
pp. 192-198 ◽  
Author(s):  
Rafael Bidarra ◽  
Eelco van den Berg ◽  
Willem F. Bronsvoort
Keyword(s):  
Feature Modeling ◽  
Feature Model ◽  
Model Specification ◽  
Web Based ◽  
Collaborative Modeling ◽  
Multiple User ◽  
Modeling Systems ◽  
The One ◽  
Research Challenge ◽  
Server Architecture

Collaborative systems are distributed multiple-user systems that are both concurrent and synchronized. An interesting research challenge is to develop a collaborative modeling system that offers all facilities of advanced modeling systems to its users, while at the same time providing them with the necessary coordination mechanisms that guarantee effective collaboration. To achieve this, a web-based collaborative feature modeling system, webSpiff, has been developed. It has a client-server architecture, with an advanced feature modeling system as a basis for the server, providing feature validation, multiple views and sophisticated visualization facilities. A careful distribution of the functionality between the server and the clients has resulted in a well-balanced system. On the one hand, the server offers all the functionality of the original feature modeling system. On the other hand, all desirable interactive modeling functionality is offered by the clients, ranging from display of feature model images to interactive model specification facilities. The architecture of webSpiff, the distribution of model data, the functionality of the server and the clients, and the communication mechanisms are described. It is shown that a good compromise between interactivity and network load has been achieved, and that indeed advanced feature modeling with a collaborative system is feasible.

Feature Validation in a Multiple-View Modeling System

1996 ◽  
Author(s):  
Maurice Dohmen ◽  
Klaas Jan de Kraker ◽  
Willem F. Bronsvoort
Keyword(s):  
Object Oriented ◽  
Feature Modeling ◽  
Feature Model ◽  
Feature Models ◽  
New Approach ◽  
Multiple View ◽  
Feature Parameters ◽  
Constraint Graph ◽  
Geometry Feature ◽  
Model Features

Abstract A new approach to specification and maintenance of feature validity conditions in a multiple-view feature modeling system is presented. Each view of a product contains a feature model. Features are specified declaratively in an object-oriented language, using constraints to specify feature validity conditions. Constraints are also used to specify relations between features. Validation of the feature models is done by a constraint manager that integrates different solving techniques. The constraint graph is mapped by the constraint manager onto constraints that are handled by dedicated solvers. If views are consistent, i.e. their feature models represent the same geometry, feature parameters can be changed. Changes are propagated through link constraints between different views.

Collaborative Modeling With Features

2001 ◽  
Author(s):  
Rafael Bidarra ◽  
Eelco van den Berg ◽  
Willem F. Bronsvoort
Keyword(s):  
Feature Modeling ◽  
Feature Model ◽  
Model Specification ◽  
Web Based ◽  
Collaborative Modeling ◽  
Multiple User ◽  
Modeling Systems ◽  
The One ◽  
Research Challenge ◽  
Server Architecture

Abstract Collaborative systems are distributed multiple-user systems that are both concurrent and synchronized. An interesting research challenge is to develop a collaborative modeling system that offers all facilities of advanced modeling systems to its users, while at the same time providing them with the necessary coordination mechanisms that guarantee an effective collaboration. To achieve this, a web-based collaborative feature modeling system, webSPIFF, has been developed. It has a client-server architecture, with an advanced feature modeling system as a basis for the server, providing feature validation, multiple views and sophisticated visualization facilities. A good distribution of the functionality between the server and the clients has resulted in a well-balanced system. On the one hand, the server offers all the functionality of the original feature modeling system. On the other hand, all desirable interactive modeling functionality is offered by the clients, ranging from display of sophisticated feature model images to interactive model specification facilities. The architecture of webSPIFF, the distribution of model data, the functionality of the server and the clients, and the communication mechanisms are described. It is shown that a good compromise between interactivity and network load has been achieved, and that indeed advanced modeling with a collaborative system is feasible.

scholarly journals Context modeling based on feature models expressed as views on ontologies via mappings

2015 ◽  
Vol 12 (3) ◽  
pp. 961-977 ◽  
Author(s):  
Sinisa Neskovic ◽  
Rade Matic
Keyword(s):  
Contextual Information ◽  
Product Line ◽  
Feature Model ◽  
Local Context ◽  
Context Modeling ◽  
Feature Models ◽  
Context Model ◽  
Global Context ◽  
Software Product ◽  
Global And Local

This paper presents an approach for context modeling in complex self adapted systems consisting of many independent context-aware applications. The contextual information used for adaptation of all system applications is described by an ontology treated as a global context model. A local context model tailored to the specific needs of a particular application is defined as a view over the global context in the form of a feature model. Feature models and their configurations derived from the global context state are then used by a specific dynamic software product line in order to adapt applications at runtime. The main focus of the paper is on the realization of mappings between global and local contexts. The paper describes an overall model architecture and provides corresponding metamodels as well as rules for a mapping between feature models and ontologies.

Web-Enabled Feature-Based Modeling in a Distributed Design Environment

1999 ◽  
Author(s):  
Jae Yeol Lee ◽  
Hyun Kim ◽  
Sung-Bae Han
Keyword(s):  
Collaborative Design ◽  
Feature Modeling ◽  
Feature Model ◽  
Internet Technology ◽  
Global Network ◽  
Dynamic Feature ◽  
Distributed Design ◽  
Product Modeling ◽  
Design Environment ◽  
Feature Based

Abstract Network and Internet technology open up another domain for building future CAD/CAM environments. The environment will be global, network-centric, and spatially distributed. In this paper, we present Web-enabled feature-based modeling in a distributed design environment. The presented approach combines the current feature-based modeling technique with distributed computing and communication technology for supporting product modeling and collaborative design activities over the network. The approach is implemented in a client/server architecture, in which Web-enabled feature modeling clients, neutral feature model server, and other applications communicate with one another via a standard communication protocol. The paper discusses how the neutral feature model supports multiple views and maintains naming consistency between geometric entities of the server and clients as the user edits the part in a client. Moreover, it explains how to minimize the network delay between the server and client according to dynamic feature modeling operations.

Feature Visualization

1997 ◽  
Author(s):  
Jan Wouter Versluis ◽  
Willem F. Bronsvoort ◽  
Klaas Jan de Kraker ◽  
Kees Seebregts
Keyword(s):  
Feature Model ◽  
Feature Models ◽  
New Techniques ◽  
Additional Information ◽  
Model Image ◽  
Feature Geometry ◽  
Engineering Information ◽  
Visualization Techniques ◽  
Insight Into ◽  
Feature Visualization

Abstract New techniques for visualizing feature models are presented. These do not only provide better geometric and spatial model insight than the standard display techniques, but also functional insight into a feature model by visualizing engineering information. Geometry is visualized by combining shaded and line visualization techniques, resulting in clearer images. Among the engineering information that is visualized are feature intersections, closure faces and feature parameters. This is done by explicitly displaying feature geometry instead of the geometry of the final shape only, and by displaying additional information in a model image. Combined, these techniques provide powerful possibilities to visualize feature models. The implementation uses specified feature and camera properties and a cellular geometric datastructure for generating images. The cellular data structure contains the feature geometry information required for feature visualization.

Towards Ubiquitous and Adaptive Web-Based Multimedia Communications via the Cloud

2015 ◽  
pp. 307-360 ◽  
Author(s):  
Spyros Panagiotakis ◽  
Ioannis Vakintis ◽  
Haroula Andrioti ◽  
Andreas Stamoulias ◽  
Kostas Kapetanakis ◽  
...  
Keyword(s):  
Web Applications ◽  
Multimedia Communications ◽  
Web Based ◽  
Client Server ◽  
Web Technologies ◽  
3D Environment ◽  
The Future ◽  
Web 3D ◽  
Service Adaptation ◽  
The Web

This chapter at first surveys the Web technologies that can enable ubiquitous and pervasive multimedia communications over the Web and then reviews the challenges that are raised by their combination. In this context, the relevant HTML5 APIs and technologies provided for service adaptation are introduced and the MPEG-DASH, X3Dom, and WebRTC frameworks are discussed. What is envisaged for the future of mobile multimedia is that with the integration of these technologies one can shape a diversity of future pervasive and personalized cloud-based Web applications, where the client-server operations are obsolete. In particular, it is believed that in the future Web cloud-based Web applications will be able to communicate, stream, and transfer adaptive events and content to their clients, creating a fully collaborative and pervasive Web 3D environment.

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