commit ddd1ac0a7f1929d59c4b5bd2a84aa16ca947ef75
author Ralph <git@ralph.ms> Wed Aug 28 05:02:02 2019 +0900
committer Gabriel Peal <gpeal@users.noreply.github.com> Tue Aug 27 16:02:02 2019 -0400
tree 1832ee5157ece8afccafffc898c168a2686bf03c
parent e2b0041a285c08ecb34d4055e66650664aef92d2

Fix progress calculation logic when the layer is time-remapped layer (#1368)

There are 2 problem on progress calculating with the layer that is applied time-remapping.

If the layer with time-remapping is placed on the way of animation, the progress calculation becomes wrong.
The value that is got from timeRemapping is already adjusted with layerModel.getStartProgress().
If the root layer is started from on the way (LottieComposition#startFrame isn't 0), the child layer with time-remapping is drawn wrongly.
The value that is got from timeRemapping isn't adjusted with LottieComposition#startFrame

lottie/src/main/java/com/airbnb/lottie/model/layer/CompositionLayer.java

diff --git a/lottie/src/main/java/com/airbnb/lottie/model/layer/CompositionLayer.java b/lottie/src/main/java/com/airbnb/lottie/model/layer/CompositionLayer.java
index b8827a7..28e6e85 100644
--- a/lottie/src/main/java/com/airbnb/lottie/model/layer/CompositionLayer.java
+++ b/lottie/src/main/java/com/airbnb/lottie/model/layer/CompositionLayer.java
@@ -117,14 +117,17 @@
     super.setProgress(progress);
     if (timeRemapping != null) {
       float duration = lottieDrawable.getComposition().getDuration();
-      long remappedTime = (long) (timeRemapping.getValue() * 1000);
+      float compositionDelayTime = layerModel.getComposition().getStartFrame() / layerModel.getComposition().getFrameRate() * 1000;
+      long remappedTime = (long) (timeRemapping.getValue() * 1000 - compositionDelayTime);
       progress = remappedTime / duration;
     }
     if (layerModel.getTimeStretch() != 0) {
       progress /= layerModel.getTimeStretch();
     }
 
-    progress -= layerModel.getStartProgress();
+    if (timeRemapping == null) {
+      progress -= layerModel.getStartProgress();
+    }
     for (int i = layers.size() - 1; i >= 0; i--) {
       layers.get(i).setProgress(progress);
     }