love.graphics.newQuad

Creates a new Quad.

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 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.

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.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

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