HSLColor.fromAHSL constructor Null safety
Creates a color.
All the arguments must not be null and be in their respective ranges. See the fields for each parameter for a description of their ranges.
Implementation
const HSLColor.fromAHSL(this.alpha, this.hue, this.saturation, this.lightness)
: assert(alpha != null),
assert(hue != null),
assert(saturation != null),
assert(lightness != null),
assert(alpha >= 0.0),
assert(alpha <= 1.0),
assert(hue >= 0.0),
assert(hue <= 360.0),
assert(saturation >= 0.0),
assert(saturation <= 1.0),
assert(lightness >= 0.0),
assert(lightness <= 1.0);