XyzColor.fromList constructor
Constructs a XyzColor from a list of xyz
values.
xyz
must not be null and must have exactly 3
or 4
values.
x, y, and z all must not be null and must be >= 0
.
The alpha value, if provided, must be >= 0 && <= 255
.
Implementation
factory XyzColor.fromList(List<num> values) {
assert(values.length == 3 || values.length == 4);
assert(values[0] >= 0);
assert(values[1] >= 0);
assert(values[2] >= 0);
if (values.length == 4) assert(values[3] >= 0 && values[3] <= 255);
final alpha = values.length == 4 ? values[3].round() : 255;
return XyzColor(values[0], values[1], values[2], alpha);
}