begin method
Implementation
void begin(Offset point, {double velocity = 0.0}) {
_points.add(point is OffsetPoint ? point : OffsetPoint.from(point));
_currentVelocity = velocity;
}
void begin(Offset point, {double velocity = 0.0}) {
_points.add(point is OffsetPoint ? point : OffsetPoint.from(point));
_currentVelocity = velocity;
}