dateTimeInterval function
calculate the dateTime intervals for cardinal spline type
Implementation
num dateTimeInterval(CartesianSeriesRenderer seriesRenderer) {
final DateTimeAxis xAxis =
seriesRenderer._xAxisRenderer!._axis as DateTimeAxis;
final DateTimeIntervalType _actualIntervalType = xAxis.intervalType;
num intervalInMilliseconds;
if (_actualIntervalType == DateTimeIntervalType.years) {
intervalInMilliseconds = 365 * 24 * 60 * 60 * 1000;
} else if (_actualIntervalType == DateTimeIntervalType.months) {
intervalInMilliseconds = 30 * 24 * 60 * 60 * 1000;
} else if (_actualIntervalType == DateTimeIntervalType.days) {
intervalInMilliseconds = 24 * 60 * 60 * 1000;
} else if (_actualIntervalType == DateTimeIntervalType.hours) {
intervalInMilliseconds = 60 * 60 * 1000;
} else if (_actualIntervalType == DateTimeIntervalType.minutes) {
intervalInMilliseconds = 60 * 1000;
} else if (_actualIntervalType == DateTimeIntervalType.seconds) {
intervalInMilliseconds = 1000;
} else {
intervalInMilliseconds = 30 * 24 * 60 * 60 * 1000;
}
return intervalInMilliseconds;
}