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Clamp numbers in saturate() et al.

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This commit is contained in:
Natalie Weizenbaum 2016-10-21 21:31:30 -07:00
parent 683f4afb40
commit d0a31b0ade
1 changed files with 8 additions and 4 deletions
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12
lib/src/functions.dart
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@ -173,28 +173,32 @@ void defineCoreFunctions(Environment environment) {
var color = arguments[0].assertColor("color");
var amount = arguments[1].assertNumber("amount");
return color.changeHsl(
lightness: color.lightness + amount.valueInRange(0, 100, "amount"));
lightness: (color.lightness + amount.valueInRange(0, 100, "amount"))
.clamp(0, 100));
});
environment.defineFunction("darken", r"$color, $amount", (arguments) {
var color = arguments[0].assertColor("color");
var amount = arguments[1].assertNumber("amount");
return color.changeHsl(
lightness: color.lightness - amount.valueInRange(0, 100, "amount"));
lightness: (color.lightness - amount.valueInRange(0, 100, "amount"))
.clamp(0, 100));
});
environment.defineFunction("saturate", r"$color, $amount", (arguments) {
var color = arguments[0].assertColor("color");
var amount = arguments[1].assertNumber("amount");
return color.changeHsl(
saturation: color.saturation + amount.valueInRange(0, 100, "amount"));
saturation: (color.saturation + amount.valueInRange(0, 100, "amount"))
.clamp(0, 100));
});
environment.defineFunction("desaturate", r"$color, $amount", (arguments) {
var color = arguments[0].assertColor("color");
var amount = arguments[1].assertNumber("amount");
return color.changeHsl(
saturation: color.saturation - amount.valueInRange(0, 100, "amount"));
saturation: (color.saturation - amount.valueInRange(0, 100, "amount"))
.clamp(0, 100));
});
environment.defineFunction("grayscale", r"$color", (arguments) {