toJson method
Implementation
Map<String, Object?> toJson() => {
'kind': kind.name,
'colors': [for (final c in colors) argbToHex(c)],
'angleTenths': angleTenths,
'pattern': pattern.name,
'patternColor': argbToHex(patternColor),
'patternScaleCdp': patternScaleCdp,
'patternOpacityPermille': patternOpacityPermille,
'driftPeriodMs': driftPeriodMs,
};