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Use out instead of uninitialized/pointer

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This commit is contained in:
Alex Clink 2022-02-28 00:02:04 -05:00
parent 5b9a5571e2
commit 2d44da33b4
1 changed files with 2 additions and 13 deletions
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15
src/sprite.cr
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@ -102,12 +102,7 @@ module PF
# Sample a color at an *x* and *y* position # Sample a color at an *x* and *y* position
def sample(x : Int, y : Int) def sample(x : Int, y : Int)
raw_pixel = peak(x, y) raw_pixel = peak(x, y)
LibSDL.get_rgb(raw_pixel, format, out r, out g, out b)
r = uninitialized UInt8
g = uninitialized UInt8
b = uninitialized UInt8
LibSDL.get_rgb(raw_pixel, format, pointerof(r), pointerof(g), pointerof(b))
Pixel.new(r, g, b) Pixel.new(r, g, b)
end end
@ -120,13 +115,7 @@ module PF
def sample(x : Int, y : Int, alpha : Boolean) def sample(x : Int, y : Int, alpha : Boolean)
return sample(x, y) unless alpha return sample(x, y) unless alpha
raw_pixel = pixel_pointer(x, y).value raw_pixel = pixel_pointer(x, y).value
LibSDL.get_rgba(raw_pixel, format, out r, out g, out b, out a)
r = uninitialized UInt8
g = uninitialized UInt8
b = uninitialized UInt8
a = uninitialized UInt8
LibSDL.get_rgba(raw_pixel, format, pointerof(r), pointerof(g), pointerof(b), pointerof(a))
Pixel.new(r, g, b, a) Pixel.new(r, g, b, a)
end end