Change Color of Rectangle

[Manner]

Hey guys,
Im new to Löve and i want to draw a rectangle with the function "love.graphics.rectangle( "line", 10, 10, 50, 50 )" and now i want to change the color of it. Is that possible?

[mickeyjm]

use love.graphics.setColor(R,G,B[,Alpha]) to alter the colour love draws in.

For example to make love draw in red you would do

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love.graphics.setColor(255,0,0)
--Drawing stuff
love.graphics.setColor(255,255,255) -- reset colours

[Jasoco]

The love.graphics.setColor() function is what you use.

Once you set the color, it stays that color until you change it.

When you want to print text or a shape in a color, set the color right before it. But don't worry about setting it every time. Just set it once and it'll remain that color until you change it. For instance, to draw an image which would be set to 255,255,255 (white) to draw normally. But for other things like shapes and text, use whatever color you want.

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love.graphics.setColor(255,0,0) --Red
love.graphics.rectangle( "line", 10, 10, 50, 50 )

Colors are in RGBA format. Red, Green, Blue, Alpha. And go from 0 to 255. If you don't know what numbers you need to use a specific color, Google for RGB tools and there's probably numerous sources on the internet for letting you adjust colors and get the numbers.

Alpha is opacity. 0 is completely transparent and 255 is completely opaque (Solid). Alpha is also optional. You either set it or your don't.

If you have questions, just ask! Fake edit: Beaten but who cares.

[Inny]

Changing the drawing color is a bit of a performance penalization (opengl guys have yelled at me, that I should be drawing in batches before changing color/texture), I generally use this with Love:

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Graphics = {}
function Graphics:setColor(c)
  if self.lastColor ~= c then
    self.lastColor = c
    love.graphics.setColor(c)
  end
  return self
end

WHITE = { 255, 255, 255 }

That way I can simply wrap rectange drawing like so:

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function Graphics:drawRect( x, y, w, h, c )
  if c then self:setColor(c) end
  love.graphics.rectangle( "fill", x, y, w, h )
  return self
end

And then use it like so:

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Graphics:drawRect( 5, 10, 50, 25, WHITE )

-- or method chaining
Graphics:setColor( WHITE ):drawRect( 5, 10, 50, 25 )

[Manner]

thanks