Example:
TrajectoryView *trajectoryView = [[TrajectoryView alloc] initWithParentView:_demoView];
trajectoryView.borderColor = [UIColor redColor];
trajectoryView.borderWidth = 10;
trajectoryView.animationDuration = 2;
[trajectoryView startAnimation];
//模拟2s后，停止动画
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[trajectoryView stopAnimation];
});
Result:
