Previously, we use animationTimeRatio to control layer animation time. Developer can configure the animationTimeRatio for model and layers. The base animationTime is 2 seconds, the final animation time will be base * animationTimeRatio_model * animationTimeRatio_layer, however, it will be too complex and confusing.

The latest strategy is to use animeTime, which is the real animation time, animeTime default to 2000 (which means 2 second). Developer can configure animeTime for model and layer, the model's animeTime will override default animeTime, the layer's animeTime will override model's animeTime.