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Commit f58a2b9c authored by Sunny Goyal's avatar Sunny Goyal
Browse files

Fixing wrong velocity state when there are too few samples 

Bug: 160568387
Change-Id: I32b3b7ee1bff5595941fc0c0b37c9f5a28d1a1fa
(cherry picked from commit 48afb6b3)
parent 9b98d130

quickstep/src/com/android/quickstep/util/MotionPauseDetector.java

+15 −10
Original line number Diff line number Diff line
@@ -358,19 +358,24 @@ public class MotionPauseDetector { 


            if (count < 3) {

                // Too few samples

                if (count == 2) {

                switch (count) {

                    case 2: {

                        int endPos = pointPos - 1;

                        if (endPos < 0) {

                            endPos += HISTORY_SIZE;

                        }

                        float denominator = eventTime - mHistoricTimes[endPos];

                        if (denominator != 0) {

                        return (eventTime - mHistoricPos[endPos]) / denominator;



                            return (mHistoricPos[pointPos] - mHistoricPos[endPos]) / denominator;

                        }

                    }

                    // fall through

                    case 1:

                        return 0f;

                    default:

                        return null;

                }

            }



            float Sxx = sxi2 - sxi * sxi / count;

            float Sxy = sxiyi - sxi * syi / count;