am f1872aaf: am 28661069: Using relative speed instead of duration rate for gesture input distance calculation.
* commit 'f1872aaf56e00fb2fb857b4d50f86d41df232959':
Using relative speed instead of duration rate for gesture input distance calculation.
diff --git a/native/jni/src/proximity_info_state.cpp b/native/jni/src/proximity_info_state.cpp
index c5f2884..530ac9e 100644
--- a/native/jni/src/proximity_info_state.cpp
+++ b/native/jni/src/proximity_info_state.cpp
@@ -104,6 +104,7 @@
mLengthCache.clear();
mDistanceCache.clear();
mNearKeysVector.clear();
+ mRelativeSpeeds.clear();
}
if (DEBUG_GEO_FULL) {
AKLOGI("Init ProximityInfoState: reused points = %d, last input size = %d",
@@ -159,6 +160,36 @@
mInputSize = mInputXs.size();
}
+ if (mInputSize > 0 && isGeometric) {
+ int sumDuration = mTimes.back() - mTimes.front();
+ int sumLength = mLengthCache.back() - mLengthCache.front();
+ float averageSpeed = static_cast<float>(sumLength) / static_cast<float>(sumDuration);
+ mRelativeSpeeds.resize(mInputSize);
+ for (int i = lastSavedInputSize; i < mInputSize; ++i) {
+ const int index = mInputIndice[i];
+ int length = 0;
+ int duration = 0;
+ if (index == 0 && index < inputSize - 1) {
+ length = getDistanceInt(xCoordinates[index], yCoordinates[index],
+ xCoordinates[index + 1], yCoordinates[index + 1]);
+ duration = times[index + 1] - times[index];
+ } else if (index == inputSize - 1 && index > 0) {
+ length = getDistanceInt(xCoordinates[index - 1], yCoordinates[index - 1],
+ xCoordinates[index], yCoordinates[index]);
+ duration = times[index] - times[index - 1];
+ } else if (0 < index && index < inputSize - 1) {
+ length = getDistanceInt(xCoordinates[index - 1], yCoordinates[index - 1],
+ xCoordinates[index + 1], yCoordinates[index + 1]);
+ duration = times[index + 1] - times[index - 1];
+ } else {
+ length = 0;
+ duration = 1;
+ }
+ const float speed = static_cast<float>(length) / static_cast<float>(duration);
+ mRelativeSpeeds[i] = speed / averageSpeed;
+ }
+ }
+
if (mInputSize > 0) {
const int keyCount = mProximityInfo->getKeyCount();
mNearKeysVector.resize(mInputSize);
@@ -464,7 +495,7 @@
}
int ProximityInfoState::getDuration(const int index) const {
- if (mInputSize > 0 && index >= 0 && index < mInputSize - 1) {
+ if (index >= 0 && index < mInputSize - 1) {
return mTimes[index + 1] - mTimes[index];
}
return 0;
@@ -524,13 +555,6 @@
return newFilterSize;
}
-float ProximityInfoState::getAveragePointDuration() const {
- if (mInputSize == 0) {
- return 0.0f;
- }
- return static_cast<float>(mTimes[mInputSize - 1] - mTimes[0]) / static_cast<float>(mInputSize);
-}
-
void ProximityInfoState::popInputData() {
mInputXs.pop_back();
mInputYs.pop_back();
diff --git a/native/jni/src/proximity_info_state.h b/native/jni/src/proximity_info_state.h
index 48862a7..c1ec76c 100644
--- a/native/jni/src/proximity_info_state.h
+++ b/native/jni/src/proximity_info_state.h
@@ -55,7 +55,7 @@
mHasTouchPositionCorrectionData(false), mMostCommonKeyWidthSquare(0), mLocaleStr(),
mKeyCount(0), mCellHeight(0), mCellWidth(0), mGridHeight(0), mGridWidth(0),
mIsContinuationPossible(false), mInputXs(), mInputYs(), mTimes(), mInputIndice(),
- mDistanceCache(), mLengthCache(), mNearKeysVector(),
+ mDistanceCache(), mLengthCache(), mRelativeSpeeds(), mNearKeysVector(),
mTouchPositionCorrectionEnabled(false), mInputSize(0) {
memset(mInputCodes, 0, sizeof(mInputCodes));
memset(mNormalizedSquaredDistances, 0, sizeof(mNormalizedSquaredDistances));
@@ -220,7 +220,9 @@
int32_t getAllPossibleChars(
const size_t startIndex, int32_t *const filter, const int32_t filterSize) const;
- float getAveragePointDuration() const;
+ float getRelativeSpeed(const int index) const {
+ return mRelativeSpeeds[index];
+ }
private:
DISALLOW_COPY_AND_ASSIGN(ProximityInfoState);
typedef hash_map_compat<int, float> NearKeysDistanceMap;
@@ -283,6 +285,7 @@
std::vector<int> mInputIndice;
std::vector<float> mDistanceCache;
std::vector<int> mLengthCache;
+ std::vector<float> mRelativeSpeeds;
std::vector<NearKeycodesSet> mNearKeysVector;
bool mTouchPositionCorrectionEnabled;
int32_t mInputCodes[MAX_PROXIMITY_CHARS_SIZE_INTERNAL * MAX_WORD_LENGTH_INTERNAL];