Difference between revisions of "love.graphics.newQuad"

m (merge section contens : note to header.)
(Use 'texture' instead of 'image', intro part)
Line 1: Line 1:
 
Creates a new [[Quad]].
 
Creates a new [[Quad]].
  
The purpose of a Quad is to use a fraction of an image to draw objects, as opposed to drawing entire image. It is most useful for sprite sheets and atlases: in a sprite atlas, multiple sprites reside in same image, quad is used to draw a specific sprite from that image; in animated sprites with all frames residing in the same image, quad is used to draw specific frame from the animation.
+
The purpose of a Quad is to use a fraction of a texture to draw objects, as opposed to drawing the entire texture. It is most useful for sprite sheets and atlases: in a sprite atlas, multiple sprites reside in the same texture, quad is used to draw a specific sprite from that texture; in animated sprites with all frames residing in the same texture, quad is used to draw specific frame from the animation.
  
 
{{newobjectnotice}}
 
{{newobjectnotice}}

Revision as of 17:06, 8 December 2020

Creates a new Quad.

The purpose of a Quad is to use a fraction of a texture to draw objects, as opposed to drawing the entire texture. It is most useful for sprite sheets and atlases: in a sprite atlas, multiple sprites reside in the same texture, quad is used to draw a specific sprite from that texture; in animated sprites with all frames residing in the same texture, quad is used to draw specific frame from the animation.


O.png 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!  



Function

Synopsis

quad = love.graphics.newQuad( x, y, width, height, sw, sh )

Arguments

number x
The top-left position in the Image along the x-axis.
number y
The top-left position in the Image along the y-axis.
number width
The width of the Quad in the Image. (Must be greater than 0.)
number height
The height of the Quad in the Image. (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.

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, img:getDimensions())

-- And here is bottom left:
bottom_left = love.graphics.newQuad(0, 32, 32, 32, img:getDimensions())

function love.draw()
	love.graphics.draw(img, top_left, 50, 50)
	love.graphics.draw(img, bottom_left, 50, 200)
	-- v0.8:
	-- love.graphics.drawq(img, top_left, 50, 50)
	-- love.graphics.drawq(img, bottom_left, 50, 200)
end

See Also


Other Languages