From 1e06a4d8e9e71188ed685282155ea52a48ddc050 Mon Sep 17 00:00:00 2001
From: Keisuke Kuroyanagi <ksk@google.com>
Date: Thu, 11 Oct 2012 20:24:41 +0900
Subject: [PATCH] Improve gesture input scoring method 3.
Change-Id: I3142cb5ec922e661f0d7c1e1706de6015360b2ff
---
native/jni/src/proximity_info_state.cpp | 8 ++++++++
native/jni/src/proximity_info_state.h | 8 ++++++--
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/native/jni/src/proximity_info_state.cpp b/native/jni/src/proximity_info_state.cpp
index 0f7e4d65f5..bbc0deedec 100644
--- a/native/jni/src/proximity_info_state.cpp
+++ b/native/jni/src/proximity_info_state.cpp
@@ -108,6 +108,7 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi
mSearchKeysVector.clear();
mRelativeSpeeds.clear();
mCharProbabilities.clear();
+ mDirections.clear();
}
if (DEBUG_GEO_FULL) {
AKLOGI("Init ProximityInfoState: reused points = %d, last input size = %d",
@@ -216,6 +217,13 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi
mRelativeSpeeds[i] = speed / averageSpeed;
}
}
+
+ // Direction calculation.
+ mDirections.resize(mInputSize - 1);
+ for (int i = max(0, lastSavedInputSize - 1); i < mInputSize - 1; ++i) {
+ mDirections[i] = getDirection(i, i + 1);
+ }
+
}
if (DEBUG_GEO_FULL) {
diff --git a/native/jni/src/proximity_info_state.h b/native/jni/src/proximity_info_state.h
index 927244b024..1a3f2869d5 100644
--- a/native/jni/src/proximity_info_state.h
+++ b/native/jni/src/proximity_info_state.h
@@ -55,8 +55,8 @@ class ProximityInfoState {
mHasTouchPositionCorrectionData(false), mMostCommonKeyWidthSquare(0), mLocaleStr(),
mKeyCount(0), mCellHeight(0), mCellWidth(0), mGridHeight(0), mGridWidth(0),
mIsContinuationPossible(false), mInputXs(), mInputYs(), mTimes(), mInputIndice(),
- mDistanceCache(), mLengthCache(), mRelativeSpeeds(), mCharProbabilities(),
- mNearKeysVector(), mSearchKeysVector(),
+ mDistanceCache(), mLengthCache(), mRelativeSpeeds(), mDirections(),
+ mCharProbabilities(), mNearKeysVector(), mSearchKeysVector(),
mTouchPositionCorrectionEnabled(false), mInputSize(0) {
memset(mInputCodes, 0, sizeof(mInputCodes));
memset(mNormalizedSquaredDistances, 0, sizeof(mNormalizedSquaredDistances));
@@ -226,6 +226,9 @@ class ProximityInfoState {
return mRelativeSpeeds[index];
}
+ float getDirection(const int index) const {
+ return mDirections[index];
+ }
// get xy direction
float getDirection(const int x, const int y) const;
@@ -306,6 +309,7 @@ class ProximityInfoState {
std::vector<float> mDistanceCache;
std::vector<int> mLengthCache;
std::vector<float> mRelativeSpeeds;
+ std::vector<float> mDirections;
// probabilities of skipping or mapping to a key for each point.
std::vector<hash_map_compat<int, float> > mCharProbabilities;
// The vector for the key code set which holds nearby keys for each sampled input point
--
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