BMKTraceOverlay *traceOverlay = [BMKTraceOverlay traceOverlayWithCoordinates:_coords count:_coordsCount option:self.animationOption];
    /// 是否使用渐变色轨迹
    /// 注意：要配合strokeColors使用，否则无效
    traceOverlay.isGradientColor = YES;
    /// 是否使用发光轨迹
    traceOverlay.isTrackBloom = YES;
    traceOverlay.bloomSpeed = 5.0f;
    traceOverlay.delegate = self;
    [self.mapView addOverlay:traceOverlay];
 /// 轨迹动画选项
- (BMKTraceOverlayOption *)animationOption {
    if (!_animationOption) {
        _animationOption = [[BMKTraceOverlayOption alloc] init];
        _animationOption.animate = YES; // 是否动画
        _animationOption.delay = 0.0; // 动画延迟开始时间
        _animationOption.duration = 10.0; // 动画时间
        _animationOption.fromValue = 0.0;
        _animationOption.toValue = 1.0;
        _animationOption.easingCurve = BMKTraceOverlayAnimationEasingCurveLinear;
        _animationOption.trackMove = NO; // 是否跟踪轨迹动画（地图跟随移动）
        _animationOption.pointMove = YES;
        BMKTrace3DModelOption *option = [[BMKTrace3DModelOption alloc] init];
        option.scale = 5;
        option.modelName = @"scenes";
        option.rotateX = 90;
        option.rotateY = -90;
        option.type = BMK3DModelTypeGLTF;
        option.modelYawAxis = BMKTraceOverlay3DModelYawAxisY;
        option.modelPath = [NSString stringWithFormat:@"%@/Model3D", [NSBundle mainBundle].bundlePath];
        option.animationIsEnable = YES;
        option.animationSpeed = 1;
        option.animationRepeatCount = 0;
        option.animationIndex = 1;
        _animationOption.modelOption = option;
    }
    return _animationOption;
}

#pragma mark - <BMKMapViewDelegate>
- (__kindof BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay {

    if ([overlay isKindOfClass:[BMKTraceOverlay class]]) {
        BMKTraceOverlayView *polylineView = [[BMKTraceOverlayView alloc] initWithTraceOverlay:overlay];
        /// 纯色
//        polylineView.strokeColor = [UIColor blueColor];
//        polylineView.fillColor = [UIColor blueColor];
        /// 渐变色颜色
        /// 注意：strokeColors 长度与轨迹点的个数必须保持一致
        polylineView.strokeColors = [_colors copy];
        polylineView.lineWidth = 8.0;
        return polylineView;
    }
    
    return nil;
}

// 暂停轨迹动画绘制
[self.traceOverlay pauseTraceOverlayDraw];
// 继续轨迹动画绘制
[self.traceOverlay resumeTraceOverlayDraw];