void OnInitialNodeSelected()
{
trajectoryTool = TrajectoryToolType.INIT_NODE;
beginSideIndex = -1;
}
void OnDeleteNodeSelected()
{
trajectoryTool = TrajectoryToolType.DELETE_NODE;
beginSideIndex = -1;
}
void OnEditSideSelected()
{
trajectoryTool = TrajectoryToolType.EDIT_SIDE;
beginSideIndex = -1;
}