Difference between revisions of "love.graphics.newQuad"
Hans adler (talk | contribs) (Unfortunately, the various dimensions must not be necessary, so a Quad can't encapsulate a flipping.) |
Hans adler (talk | contribs) (better with parentheses) |
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{{param|number|x|The top-left position along the x-axis.}} | {{param|number|x|The top-left position along the x-axis.}} | ||
{{param|number|y|The top-left position along the y-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|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|height|The height of the Quad. (Must be greater than 0.)}} |
− | {{param|number|sw|The reference width. Must be greater than 0.}} | + | {{param|number|sw|The reference width. (Must be greater than 0.)}} |
− | {{param|number|sh|The reference height. Must be greater than 0.}} | + | {{param|number|sh|The reference height. (Must be greater than 0.)}} |
=== Returns === | === Returns === | ||
{{param|Quad|quad|The new Quad.}} | {{param|Quad|quad|The new Quad.}} |
Revision as of 02:27, 15 January 2012
Creates a new Quad.
Contents
Function
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. (Must be greater than 0.)
number sh
- The reference height. (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.
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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