getLocation method
Get location for the domain.
Implementation
@override
double? getLocation(D? domain) {
const epsilon = 2e-10;
if (domain != null) {
final scale = this.scale!;
final range = scale.range!;
final domainLocation = scale[domain]!.toDouble();
// If domain location is outside of scale range but only outside by less
// than epsilon, correct the potential mis-location caused by floating
// point computation by moving it inside of scale range.
if (domainLocation > range.max && domainLocation - epsilon < range.max) {
return domainLocation - epsilon;
} else if (domainLocation < range.min &&
domainLocation + epsilon > range.min) {
return domainLocation + epsilon;
}
return domainLocation;
}
return null;
}