Quad - Revision history

EricChadwick: restored and revised

2015-03-17T22:04:09Z

restored and revised

Caustic: Redirected page to Glossary#Quad

2014-10-10T01:55:58Z

Redirected page to Glossary#Quad

Cheeseplus: 1 revision

2014-07-29T08:45:06Z

1 revision

BrandonPhoenix: created quad page

2010-08-16T16:23:59Z

created quad page

New page

__NOTOC__
{{:[[OutOfDate]]}}

= Quad =

A four-sided polygon. Some [[RT3D]] engines use quads instead of triangular polygons because it saves NEED DEFINITION, because a square polygon stored as a quad stores only four vertices, whereas a square created with two triangles means transforming six vertices instead of only four. The artist should keep the vertices of the quad [[Coplanar|coplanar]], or rendering weirdness can happen, because the quad is divided into two triangles at render time. The internal edge between the two tris is determined arbitrarily, so it could look like a ridge or a valley.
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[[Category:Glossary]]

← Older revision		Revision as of 22:04, 17 March 2015
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−	~~#REDIRECT~~ [[Glossary~~#Quad~~]]	+	A quad is a four-sided [[Polygon]].
		+
		+	Some [[:Category:GameEngines\|game engines]] use quads instead of triangular polygons, but most engines just use tris.
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		+	A greater benefit for game artists is that quads work well with edge-loop selection & transform methods that speed up modeling, make it easier to judge the "flow" of a model, and make it easier to weight a [[Skinning\|skinned]] model to its bones.
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		+	Artists usually preserve quads in their models as long as possible. However [[Normal map]]ping usually requires a triangulated model, which keeps the original model's tangent basis consistent, so it will render properly.
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		+	The artist should try to keep the vertices of each quad [[Coplanar]], or rendering weirdness can happen, because the quad is divided into two triangles at render time. The internal edge between the two tris is determined arbitrarily, so it could look like a ridge or a valley.
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		+	[[image:ridge_valley.gif]]
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		+	See also [[Polygon Count]].
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		+	----
		+	[[Category:Glossary]][[Category:Rendering]]

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-__NOTOC__
+#REDIRECT [[Glossary#Quad]]
-{{:[[OutOfDate]]}}
-−
-= Quad =
-−
-A four-sided polygon. Some [[RT3D]] engines use quads instead of triangular polygons because it saves NEED DEFINITION, because a square polygon stored as a quad stores only four vertices, whereas a square created with two triangles means transforming six vertices instead of only four. The artist should keep the vertices of the quad [[Coplanar|coplanar]], or rendering weirdness can happen, because the quad is divided into two triangles at render time. The internal edge between the two tris is determined arbitrarily, so it could look like a ridge or a valley.
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-[[Category:Glossary]]

← Older revision	Revision as of 08:45, 29 July 2014
(No difference)