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fix: black and white point should be set relative to quantum range

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This commit is contained in:
Daniel Rönnkvist
2020-03-26 10:13:54 +01:00
parent 5c5015a10e
commit 36c145d4c4
1 changed files with 8 additions and 2 deletions
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10
src/wand/magick.rs
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@ -257,8 +257,14 @@ impl MagickWand {
gamma: f64, gamma: f64,
white_point: f64, white_point: f64,
) -> Result<(), &'static str> { ) -> Result<(), &'static str> {
let result = let result = unsafe {
unsafe { bindings::MagickLevelImage(self.wand, black_point, gamma, white_point) }; bindings::MagickLevelImage(
self.wand,
black_point * bindings::QuantumRange,
gamma,
white_point * bindings::QuantumRange,
)
};
match result { match result {
bindings::MagickBooleanType_MagickTrue => Ok(()), bindings::MagickBooleanType_MagickTrue => Ok(()),
_ => Err("failed to set size of wand"), _ => Err("failed to set size of wand"),