Difference between revisions of "love.graphics.newQuad"
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m (Added 0.9.0 variant) |
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{{newobjectnotice}} | {{newobjectnotice}} | ||
== Function == | == Function == | ||
+ | {{oldin|[[0.9.0]]|090|type=variant}} | ||
=== Synopsis === | === Synopsis === | ||
<source lang="lua"> | <source lang="lua"> | ||
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=== Note === | === Note === | ||
The purpose of a Quad is to describe the result of the following transformation on any drawable object. The object is first scaled to dimensions sw × sh. The Quad then describes the rectangular area of dimensions width × height whose upper left corner is at position (x, y) inside the scaled object. | The purpose of a Quad is to describe the result of the following transformation on any drawable object. The object is first scaled to dimensions sw × sh. The Quad then describes the rectangular area of dimensions width × height whose upper left corner is at position (x, y) inside the scaled object. | ||
+ | |||
+ | == Function == | ||
+ | {{newin|[[0.9.0]]|090|type=variant}} | ||
+ | === Synopsis === | ||
+ | <source lang="lua"> | ||
+ | geometry = love.graphics.newQuad( x, y, width, height, sw, sh ) | ||
+ | </source> | ||
+ | === Arguments === | ||
+ | {{param|number|x|The top-left position along the x-axis.}} | ||
+ | {{param|number|y|The top-left position along the y-axis.}} | ||
+ | {{param|number|width|The width of the quad. (Must be greater than 0.)}} | ||
+ | {{param|number|height|The height of the quad. (Must be greater than 0.)}} | ||
+ | {{param|number|sw|The reference width, the width of the [[Image]]. (Must be greater than 0.)}} | ||
+ | {{param|number|sh|The reference height, the height of the [[Image]]. (Must be greater than 0.)}} | ||
+ | === Returns === | ||
+ | {{param|Geometry|geometry|A new Geometry.}} | ||
== Examples == | == Examples == |
Revision as of 23:28, 16 August 2013
Creates a new Quad.
This function can be slow if it is called repeatedly, such as from love.update or love.draw. If you need to use a specific resource often, create it once and store it somewhere it can be reused! |
Contents
Function
Removed in LÖVE 0.9.0 |
This variant is not supported in that and later versions. |
Synopsis
quad = love.graphics.newQuad( x, y, width, height, sw, sh )
Arguments
number x
- The top-left position along the x-axis.
number y
- The top-left position along the y-axis.
number width
- The width of the Quad. (Must be greater than 0.)
number height
- The height of the Quad. (Must be greater than 0.)
number sw
- The reference width, the width of the Image. (Must be greater than 0.)
number sh
- The reference height, the height of the Image. (Must be greater than 0.)
Returns
Quad quad
- The new Quad.
Note
The purpose of a Quad is to describe the result of the following transformation on any drawable object. The object is first scaled to dimensions sw × sh. The Quad then describes the rectangular area of dimensions width × height whose upper left corner is at position (x, y) inside the scaled object.
Function
Available since LÖVE 0.9.0 |
This variant is not supported in earlier versions. |
Synopsis
geometry = love.graphics.newQuad( x, y, width, height, sw, sh )
Arguments
number x
- The top-left position along the x-axis.
number y
- The top-left position along the y-axis.
number width
- The width of the quad. (Must be greater than 0.)
number height
- The height of the quad. (Must be greater than 0.)
number sw
- The reference width, the width of the Image. (Must be greater than 0.)
number sh
- The reference height, the height of the Image. (Must be greater than 0.)
Returns
Geometry geometry
- A new Geometry.
Examples
Use a Quad to display part of an Image:
img = love.graphics.newImage("mushroom-64x64.png")
-- Let's say we want to display only the top-left
-- 32x32 quadrant of the Image:
top_left = love.graphics.newQuad(0, 0, 32, 32, 64, 64)
-- And here is bottom left:
bottom_left = love.graphics.newQuad(0, 32, 32, 32, 64, 64)
function love.draw()
love.graphics.drawq(img, top_left, 50, 50)
love.graphics.drawq(img, bottom_left, 50, 200)
end
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