showByIndex method
Displays the trackball at the specified point index.
- pointIndex - index of the point for which the trackball must be shown
Implementation
void showByIndex(int pointIndex) {
final TrackballRenderingDetails trackballRenderingDetails =
TrackballHelper.getRenderingDetails(
_stateProperties.trackballBehaviorRenderer);
trackballRenderingDetails.internalShowByIndex(
pointIndex,
);
}