Solid modeling: Difference between revisions

Revision as of 06:47, 28 October 2023

Revision as of 19:03, 20 April 2024

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[[File:Jack-in-cube solid model, light background.gif|thumb|right|The geometry in solid modeling is fully described in 3{{nbhyph}}D space; objects can be viewed from any angle.]]

'''Solid modeling''' (or '''solid modelling''') is a consistent set of principles for mathematical and computer modeling of three-dimensional shapes ''[[solid (mathematics)|(solids)]]''. Solid modeling is distinguished within the broader related areas of [[geometric modeling]] and [[computer graphics]], such as ''[[3D modeling]]'', by its emphasis on physical fidelity.<ref name = "Solid Modeling">{{cite book |url=http://sal-cnc.me.wisc.edu/index.php?option=com_remository&Itemid=143&func=fileinfo&id=53 |title= Solid Modeling|author= Shapiro, Vadim |year= 2001 |publisher= Elsevier |access-date=20 April 2010}}</ref> Together, the principles of geometric and solid modeling form the foundation of 3D-[[computer-aided design]] and in general support the creation, exchange, visualization, animation, interrogation, and annotation of digital models of physical objects.

== Overview ==

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===Parametric and feature-based modeling===

Features are defined to be parametric shapes associated with ''attributes'' such as intrinsic geometric parameters (length, width, depth etc.), position and orientation, [[geometric tolerance]]s, [[material properties]], and references to other features.<ref name = "Features">{{cite journal |title= Challenges in feature based manufacturing research |journal= Communications of the ACM |volume= 39 |issue= 2 |pages= 77–85 |author= Mantyla, M., Nau, D. , and Shah, J.|year= 1996|doi= 10.1145/230798.230808 |s2cid= 3340804 |doi-access= free }}</ref> Features also provide access to related production processes and resource models. Thus, features have a semantically higher level than primitive closed regular sets. Features are generally expected to form a basis for linking CAD with downstream manufacturing applications, and also for organizing [[database]]s for design data reuse. Parametric feature based modeling is frequently combined with constructive binary solid geometry (CSG) to fully describe systems of complex objects in engineering.

== History of solid modelers ==

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* [[Wireframe modeling|Wire frame modelling]]

* [[Free-surface modelling]]

* [[Computational geometry]]

* [[Computer graphics]]