Difference between revisions of "Geometry"

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{{newin|[[0.9.0]]|090|type=type}}
 
A polygonal shape with texture coordinate information.
 
  
Geometries can be used to select part of a texture to draw. In this way, one large [http://en.wikipedia.org/wiki/Texture_atlas texture atlas] can be loaded, and then split up into sub-images.
 
 
Geometries replace the old [[Quad]] type completely since they can do the same and more.
 
 
== Constructors ==
 
{{#ask: [[Category:Functions]] [[Constructs::Geometry]]
 
| headers=hide
 
| default=None.
 
| format=template
 
| template=ListingFields
 
| introtemplate=ListingIntro
 
| outrotemplate=ListingOutro
 
| ?Description
 
| ?PrettySince
 
| ?PrettyRemoved
 
}}
 
== Functions ==
 
{{#ask: [[Category:Functions]] [[parent::Geometry||Object]]
 
| headers=hide
 
| format=template
 
| template=ListingFields
 
| introtemplate=ListingIntro
 
| outrotemplate=ListingOutro
 
| ?Description
 
| ?PrettySince
 
| ?PrettyRemoved
 
}}
 
== Enums ==
 
{{#ask: [[Category:Enums]] [[parent::Geometry||Object]]
 
| headers=hide
 
| format=template
 
| template=ListingFields
 
| introtemplate=ListingIntro
 
| outrotemplate=ListingOutro
 
| ?Description
 
| ?PrettySince
 
| ?PrettyRemoved
 
}}
 
== Supertypes ==
 
* [[parent::Object]]
 
 
== Examples ==
 
=== Emulate 0.8.0's [[Quad:setViewport]] ===
 
<source lang="lua">
 
-- Quad:setViewport doesn't exist in 0.9.0+, but we can still create a function which does the same thing.
 
-- The original image's width and height are needed as well, unlike with 0.8.0's Quad:setViewport.
 
function setQuadViewport(geometry, x, y, w, h, sw, sh)
 
geometry:setVertex(1, 0, 0, x/sw, y/sh)
 
geometry:setVertex(2, 0, h, x/sw, (y+h)/sh)
 
geometry:setVertex(3, w, h, (x+w)/sw, (y+h)/sh)
 
geometry:setVertex(4, w, 0, (x+w)/sw, y/sh)
 
end
 
 
setQuadViewport(myQuad, 0, 0, 32, 32, myImage:getDimensions())
 
</source>
 
 
== See Also ==
 
* [[parent::love.graphics]]
 
* [[love.graphics.draw]]
 
 
[[Category:Types]]
 
{{#set:Description=A polygonal shape with texture coordinate information.}}
 
== Other Languages ==
 
{{i18n|Geometry}}
 
 
--@todo: add [[Concept:Current]] to stuffs when done adding stuffs.
 

Latest revision as of 07:24, 10 October 2013