BMK3DTraceOverlay *traceOverlay = [BMK3DTraceOverlay traceOverlay3DWithCoordinates:_coords count:_coordsCount option:self.traceOption];
traceOverlay.delegate = self;
[self.mapView addOverlay:traceOverlay];

/// 轨迹动画选项
- (BMK3DTraceOverlayOption *)traceOption {
if (!_traceOption) {
    _traceOption = [[BMK3DTraceOverlayOption alloc] init];
    // 轨迹样式
    _traceOption.traceType = BMK3DTraceOverlayTypeDefault;
    // 动画时间
    _traceOption.duration = 10.0;
    _traceOption.easingCurve = BMK3DTraceOverlayAnimationEasingCurveLinear;
    // 轨迹绘制的透明度，取值范围[0.0, 1.0], 默认1.0
    _traceOption.opacity = 0.8;
    // 轨迹投影面的透明度，取值范围[0.0, 1.0], 默认1.0
    _traceOption.paletteOpacity = 1.0;
    // 调色板图片（3D轨迹线高度面的取色板）
    _traceOption.paletteImage = [UIImage imageNamed:@"bule_wall_128x128"];
    // 投影调色板图片 （贴合底图的2D轨迹线的取色板）
    _traceOption.projectionPaletteImage = [UIImage imageNamed:@"red_wall_64x64"];
    
}
return _traceOption;
}

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

    if ([overlay isKindOfClass:[BMK3DTraceOverlay class]]) {
        BMK3DTraceOverlayView *traceOverlayView = [[BMK3DTraceOverlayView alloc] initWithTraceOverlay:overlay];

        /// 3D效果的高度
        /// 注意：strokeHeights 长度与轨迹点的个数必须保持一致
        traceOverlayView.strokeHeights = [_heights copy];
        traceOverlayView.lineWidth = 12.0;
        return traceOverlayView;
    }
    
    return nil;
}

#pragma mark - <BMK3DTraceOverlayAnimationDelegate>
/// 动画开始
- (void)traceOverlayAnimationDidStart:(BMK3DTraceOverlay *)traceOverlay {
    NSLog(@"动画开始");
}

/// 动画进度
/// @param traceOverlay BMK3DTraceOverlay
/// @param progress 进度 0.0 ~ 100.0
- (void)traceOverlay:(BMK3DTraceOverlay *)traceOverlay animationRunningProgress:(CGFloat)progress {
    NSLog(@"动画进度：%.1f", progress);
}

/// 追踪动画实时位置
/// @param traceOverlay BMK3DTraceOverlay
/// @param position 当前位置
- (void)traceOverlay:(BMK3DTraceOverlay *)traceOverlay animationTraceMovePosition:(CLLocationCoordinate2D)position {
    NSLog(@"动画实时位置：%lf, %lf", position.latitude, position.longitude);
}

/// 动画结束
/// @param traceOverlay BMK3DTraceOverlay
/// @param flag 动画是否完成
- (void)traceOverlay:(BMK3DTraceOverlay *)traceOverlay animationDidEnd:(BOOL)flag {
    NSLog(@"动画结束");
}