Fast constructive-solid geometry display in the pixel-powers graphics system

1986 ◽  
Author(s):  
Jack Goldfeather ◽  
Jeff P M Hultquist ◽  
Henry Fuchs
Keyword(s):  
Constructive Solid Geometry ◽  
Solid Geometry

Environment for Fast Elaboration of Constructive Solid Geometry

1986 ◽  
pp. 20-33 ◽  
Author(s):  
Akira Fujimoto ◽  
Christopher G. Perrott ◽  
Kansei Iwata
Keyword(s):  
Constructive Solid Geometry ◽  
Solid Geometry

Equipment workspace analysis in infrastructure projects

2007 ◽  
Vol 34 (10) ◽  
pp. 1247-1256 ◽  
Author(s):  
Amin Hammad ◽  
Cheng Zhang ◽  
Mohamed Al-Hussein ◽  
Germain Cardinal
Keyword(s):  
Three Dimensional ◽  
Construction Equipment ◽  
Prototype System ◽  
Constructive Solid Geometry ◽  
Infrastructure Projects ◽  
Bridge Construction ◽  
Solid Geometry ◽  
Workspace Analysis ◽  
Computational Aspects

Workspace conflicts are one of the important problems that can delay construction activities, reduce productivity, or cause accidents that threaten the safety of workers. Workspace planning is particularly important in the case of large infrastructure projects, such as bridge construction, and rehabilitation projects where equipment with complex workspace requirement is required. This paper aims to extend the previous research on workspace representation and analysis in the case of large infrastructure projects focusing on the following issues: (i) specific representation of equipment workspaces using composite shapes, (ii) semiautomatic generation and analysis of workspaces, and (iii) development of a prototype system that can generate workspaces and detect spatiotemporal conflicts in a three-dimensional environment. The computational aspects of the proposed approach are discussed and demonstrated through the development of a prototype system, which has been applied in a case study of the deck replacement of Jacques Cartier Bridge in Montréal.Key words: workspace analysis, spatiotemporal conflicts, construction equipment, infrastructure projects, bridge redecking, constructive solid geometry.

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