Editing Hidden-surface determination (section)

{{short description|Visibility in 3D computer graphics}}
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{{3D computer graphics}}
In [[3D computer graphics]], '''hidden-surface determination''' (also known as '''shown-surface determination''', '''hidden-surface removal''' ('''HSR'''), '''occlusion culling''' ('''OC''') or '''visible-surface determination''' ('''VSD''')) is the process of identifying what [[Computer representation of surfaces|surfaces]] and parts of surfaces can be seen from a particular viewing angle. A hidden-surface determination [[algorithm]] is a solution to the [[visibility problem]], which was one of the first major problems in the field of 3D computer graphics.{{citation-needed|date=June 2020}} The process of hidden-surface determination is sometimes called '''hiding''', and such an algorithm is sometimes called a '''hider'''.{{citation-needed|date=June 2020}} When referring to line rendering it is known as [[hidden-line removal]].{{citation-needed|date=June 2020}} Hidden-surface determination is necessary to render a scene correctly, so that one may not view features hidden behind the model itself, allowing only the naturally viewable portion of the graphic to be visible.