diff options
Diffstat (limited to 'native/jni/src/proximity_info_state.cpp')
| -rw-r--r-- | native/jni/src/proximity_info_state.cpp | 262 |
1 files changed, 13 insertions, 249 deletions
diff --git a/native/jni/src/proximity_info_state.cpp b/native/jni/src/proximity_info_state.cpp index 118d5c001..31b6e4baf 100644 --- a/native/jni/src/proximity_info_state.cpp +++ b/native/jni/src/proximity_info_state.cpp @@ -23,7 +23,7 @@ #include "geometry_utils.h" #include "proximity_info.h" #include "proximity_info_state.h" -#include "proximity_info_utils.h" +#include "proximity_info_state_utils.h" namespace latinime { @@ -94,82 +94,11 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi mSampledInputSize = 0; if (xCoordinates && yCoordinates) { - if (DEBUG_SAMPLING_POINTS) { - if (isGeometric) { - for (int i = 0; i < inputSize; ++i) { - AKLOGI("(%d) x %d, y %d, time %d", - i, xCoordinates[i], yCoordinates[i], times[i]); - } - } - } -#ifdef DO_ASSERT_TEST - if (times) { - for (int i = 0; i < inputSize; ++i) { - if (i > 0) { - ASSERT(times[i] >= times[i - 1]); - } - } - } -#endif - const bool proximityOnly = !isGeometric && (xCoordinates[0] < 0 || yCoordinates[0] < 0); - int lastInputIndex = pushTouchPointStartIndex; - for (int i = lastInputIndex; i < inputSize; ++i) { - const int pid = pointerIds ? pointerIds[i] : 0; - if (pointerId == pid) { - lastInputIndex = i; - } - } - if (DEBUG_GEO_FULL) { - AKLOGI("Init ProximityInfoState: last input index = %d", lastInputIndex); - } - // Working space to save near keys distances for current, prev and prevprev input point. - NearKeysDistanceMap nearKeysDistances[3]; - // These pointers are swapped for each inputs points. - NearKeysDistanceMap *currentNearKeysDistances = &nearKeysDistances[0]; - NearKeysDistanceMap *prevNearKeysDistances = &nearKeysDistances[1]; - NearKeysDistanceMap *prevPrevNearKeysDistances = &nearKeysDistances[2]; - // "sumAngle" is accumulated by each angle of input points. And when "sumAngle" exceeds - // the threshold we save that point, reset sumAngle. This aims to keep the figure of - // the curve. - float sumAngle = 0.0f; - - for (int i = pushTouchPointStartIndex; i <= lastInputIndex; ++i) { - // Assuming pointerId == 0 if pointerIds is null. - const int pid = pointerIds ? pointerIds[i] : 0; - if (DEBUG_GEO_FULL) { - AKLOGI("Init ProximityInfoState: (%d)PID = %d", i, pid); - } - if (pointerId == pid) { - const int c = isGeometric ? NOT_A_COORDINATE : getPrimaryCodePointAt(i); - const int x = proximityOnly ? NOT_A_COORDINATE : xCoordinates[i]; - const int y = proximityOnly ? NOT_A_COORDINATE : yCoordinates[i]; - const int time = times ? times[i] : -1; - - if (i > 1) { - const float prevAngle = getAngle(xCoordinates[i - 2], yCoordinates[i - 2], - xCoordinates[i - 1], yCoordinates[i - 1]); - const float currentAngle = - getAngle(xCoordinates[i - 1], yCoordinates[i - 1], x, y); - sumAngle += getAngleDiff(prevAngle, currentAngle); - } - - if (pushTouchPoint(i, c, x, y, time, isGeometric /* do sampling */, - i == lastInputIndex, sumAngle, currentNearKeysDistances, - prevNearKeysDistances, prevPrevNearKeysDistances)) { - // Previous point information was popped. - NearKeysDistanceMap *tmp = prevNearKeysDistances; - prevNearKeysDistances = currentNearKeysDistances; - currentNearKeysDistances = tmp; - } else { - NearKeysDistanceMap *tmp = prevPrevNearKeysDistances; - prevPrevNearKeysDistances = prevNearKeysDistances; - prevNearKeysDistances = currentNearKeysDistances; - currentNearKeysDistances = tmp; - sumAngle = 0.0f; - } - } - } - mSampledInputSize = mSampledInputXs.size(); + mSampledInputSize = ProximityInfoStateUtils::updateTouchPoints( + mProximityInfo->getMostCommonKeyWidth(), mProximityInfo, mMaxPointToKeyLength, + mInputProximities, xCoordinates, yCoordinates, times, pointerIds, inputSize, + isGeometric, pointerId, pushTouchPointStartIndex, + &mSampledInputXs, &mSampledInputYs, &mTimes, &mLengthCache, &mInputIndice); } if (mSampledInputSize > 0 && isGeometric) { @@ -324,7 +253,7 @@ void ProximityInfoState::refreshSpeedRates(const int inputSize, const int *const if (i < mSampledInputSize - 1 && j >= mInputIndice[i + 1]) { break; } - length += ProximityInfoUtils::getDistanceInt(xCoordinates[j], yCoordinates[j], + length += getDistanceInt(xCoordinates[j], yCoordinates[j], xCoordinates[j + 1], yCoordinates[j + 1]); duration += times[j + 1] - times[j]; } @@ -333,7 +262,7 @@ void ProximityInfoState::refreshSpeedRates(const int inputSize, const int *const break; } // TODO: use mLengthCache instead? - length += ProximityInfoUtils::getDistanceInt(xCoordinates[j], yCoordinates[j], + length += getDistanceInt(xCoordinates[j], yCoordinates[j], xCoordinates[j + 1], yCoordinates[j + 1]); duration += times[j + 1] - times[j]; } @@ -388,8 +317,7 @@ float ProximityInfoState::calculateBeelineSpeedRate( while (start > 0 && tempBeelineDistance < lookupRadius) { tempTime += times[start] - times[start - 1]; --start; - tempBeelineDistance = ProximityInfoUtils::getDistanceInt(x0, y0, xCoordinates[start], - yCoordinates[start]); + tempBeelineDistance = getDistanceInt(x0, y0, xCoordinates[start], yCoordinates[start]); } // Exclusive unless this is an edge point if (start > 0 && start < actualInputIndex) { @@ -402,8 +330,7 @@ float ProximityInfoState::calculateBeelineSpeedRate( while (end < (inputSize - 1) && tempBeelineDistance < lookupRadius) { tempTime += times[end + 1] - times[end]; ++end; - tempBeelineDistance = ProximityInfoUtils::getDistanceInt(x0, y0, xCoordinates[end], - yCoordinates[end]); + tempBeelineDistance = getDistanceInt(x0, y0, xCoordinates[end], yCoordinates[end]); } // Exclusive unless this is an edge point if (end > actualInputIndex && end < (inputSize - 1)) { @@ -421,7 +348,7 @@ float ProximityInfoState::calculateBeelineSpeedRate( const int y2 = yCoordinates[start]; const int x3 = xCoordinates[end]; const int y3 = yCoordinates[end]; - const int beelineDistance = ProximityInfoUtils::getDistanceInt(x2, y2, x3, y3); + const int beelineDistance = getDistanceInt(x2, y2, x3, y3); int adjustedStartTime = times[start]; if (start == 0 && actualInputIndex == 0 && inputSize > 1) { adjustedStartTime += FIRST_POINT_TIME_OFFSET_MILLIS; @@ -477,166 +404,6 @@ bool ProximityInfoState::checkAndReturnIsContinuationPossible(const int inputSiz return true; } -// Calculating point to key distance for all near keys and returning the distance between -// the given point and the nearest key position. -float ProximityInfoState::updateNearKeysDistances(const int x, const int y, - NearKeysDistanceMap *const currentNearKeysDistances) { - static const float NEAR_KEY_THRESHOLD = 2.0f; - - currentNearKeysDistances->clear(); - const int keyCount = mProximityInfo->getKeyCount(); - float nearestKeyDistance = mMaxPointToKeyLength; - for (int k = 0; k < keyCount; ++k) { - const float dist = mProximityInfo->getNormalizedSquaredDistanceFromCenterFloatG(k, x, y); - if (dist < NEAR_KEY_THRESHOLD) { - currentNearKeysDistances->insert(std::pair<int, float>(k, dist)); - } - if (nearestKeyDistance > dist) { - nearestKeyDistance = dist; - } - } - return nearestKeyDistance; -} - -// Check if previous point is at local minimum position to near keys. -bool ProximityInfoState::isPrevLocalMin(const NearKeysDistanceMap *const currentNearKeysDistances, - const NearKeysDistanceMap *const prevNearKeysDistances, - const NearKeysDistanceMap *const prevPrevNearKeysDistances) const { - static const float MARGIN = 0.01f; - - for (NearKeysDistanceMap::const_iterator it = prevNearKeysDistances->begin(); - it != prevNearKeysDistances->end(); ++it) { - NearKeysDistanceMap::const_iterator itPP = prevPrevNearKeysDistances->find(it->first); - NearKeysDistanceMap::const_iterator itC = currentNearKeysDistances->find(it->first); - if ((itPP == prevPrevNearKeysDistances->end() || itPP->second > it->second + MARGIN) - && (itC == currentNearKeysDistances->end() || itC->second > it->second + MARGIN)) { - return true; - } - } - return false; -} - -// Calculating a point score that indicates usefulness of the point. -float ProximityInfoState::getPointScore( - const int x, const int y, const int time, const bool lastPoint, const float nearest, - const float sumAngle, const NearKeysDistanceMap *const currentNearKeysDistances, - const NearKeysDistanceMap *const prevNearKeysDistances, - const NearKeysDistanceMap *const prevPrevNearKeysDistances) const { - static const int DISTANCE_BASE_SCALE = 100; - static const float NEAR_KEY_THRESHOLD = 0.6f; - static const int CORNER_CHECK_DISTANCE_THRESHOLD_SCALE = 25; - static const float NOT_LOCALMIN_DISTANCE_SCORE = -1.0f; - static const float LOCALMIN_DISTANCE_AND_NEAR_TO_KEY_SCORE = 1.0f; - static const float CORNER_ANGLE_THRESHOLD = M_PI_F * 2.0f / 3.0f; - static const float CORNER_SUM_ANGLE_THRESHOLD = M_PI_F / 4.0f; - static const float CORNER_SCORE = 1.0f; - - const size_t size = mSampledInputXs.size(); - // If there is only one point, add this point. Besides, if the previous point's distance map - // is empty, we re-compute nearby keys distances from the current point. - // Note that the current point is the first point in the incremental input that needs to - // be re-computed. - if (size <= 1 || prevNearKeysDistances->empty()) { - return 0.0f; - } - - const int baseSampleRate = mProximityInfo->getMostCommonKeyWidth(); - const int distPrev = ProximityInfoUtils::getDistanceInt( - mSampledInputXs.back(), mSampledInputYs.back(), - mSampledInputXs[size - 2], mSampledInputYs[size - 2]) * DISTANCE_BASE_SCALE; - float score = 0.0f; - - // Location - if (!isPrevLocalMin(currentNearKeysDistances, prevNearKeysDistances, - prevPrevNearKeysDistances)) { - score += NOT_LOCALMIN_DISTANCE_SCORE; - } else if (nearest < NEAR_KEY_THRESHOLD) { - // Promote points nearby keys - score += LOCALMIN_DISTANCE_AND_NEAR_TO_KEY_SCORE; - } - // Angle - const float angle1 = getAngle(x, y, mSampledInputXs.back(), mSampledInputYs.back()); - const float angle2 = getAngle(mSampledInputXs.back(), mSampledInputYs.back(), - mSampledInputXs[size - 2], mSampledInputYs[size - 2]); - const float angleDiff = getAngleDiff(angle1, angle2); - - // Save corner - if (distPrev > baseSampleRate * CORNER_CHECK_DISTANCE_THRESHOLD_SCALE - && (sumAngle > CORNER_SUM_ANGLE_THRESHOLD || angleDiff > CORNER_ANGLE_THRESHOLD)) { - score += CORNER_SCORE; - } - return score; -} - -// Sampling touch point and pushing information to vectors. -// Returning if previous point is popped or not. -bool ProximityInfoState::pushTouchPoint(const int inputIndex, const int nodeCodePoint, int x, int y, - const int time, const bool sample, const bool isLastPoint, const float sumAngle, - NearKeysDistanceMap *const currentNearKeysDistances, - const NearKeysDistanceMap *const prevNearKeysDistances, - const NearKeysDistanceMap *const prevPrevNearKeysDistances) { - static const int LAST_POINT_SKIP_DISTANCE_SCALE = 4; - - size_t size = mSampledInputXs.size(); - bool popped = false; - if (nodeCodePoint < 0 && sample) { - const float nearest = updateNearKeysDistances(x, y, currentNearKeysDistances); - const float score = getPointScore(x, y, time, isLastPoint, nearest, sumAngle, - currentNearKeysDistances, prevNearKeysDistances, prevPrevNearKeysDistances); - if (score < 0) { - // Pop previous point because it would be useless. - popInputData(); - size = mSampledInputXs.size(); - popped = true; - } else { - popped = false; - } - // Check if the last point should be skipped. - if (isLastPoint && size > 0) { - if (ProximityInfoUtils::getDistanceInt(x, y, mSampledInputXs.back(), - mSampledInputYs.back()) * LAST_POINT_SKIP_DISTANCE_SCALE - < mProximityInfo->getMostCommonKeyWidth()) { - // This point is not used because it's too close to the previous point. - if (DEBUG_GEO_FULL) { - AKLOGI("p0: size = %zd, x = %d, y = %d, lx = %d, ly = %d, dist = %d, " - "width = %d", size, x, y, mSampledInputXs.back(), mSampledInputYs.back(), - ProximityInfoUtils::getDistanceInt(x, y, mSampledInputXs.back(), - mSampledInputYs.back()), - mProximityInfo->getMostCommonKeyWidth() - / LAST_POINT_SKIP_DISTANCE_SCALE); - } - return popped; - } - } - } - - if (nodeCodePoint >= 0 && (x < 0 || y < 0)) { - const int keyId = mProximityInfo->getKeyIndexOf(nodeCodePoint); - if (keyId >= 0) { - x = mProximityInfo->getKeyCenterXOfKeyIdG(keyId); - y = mProximityInfo->getKeyCenterYOfKeyIdG(keyId); - } - } - - // Pushing point information. - if (size > 0) { - mLengthCache.push_back( - mLengthCache.back() + ProximityInfoUtils::getDistanceInt( - x, y, mSampledInputXs.back(), mSampledInputYs.back())); - } else { - mLengthCache.push_back(0); - } - mSampledInputXs.push_back(x); - mSampledInputYs.push_back(y); - mTimes.push_back(time); - mInputIndice.push_back(inputIndex); - if (DEBUG_GEO_FULL) { - AKLOGI("pushTouchPoint: x = %03d, y = %03d, time = %d, index = %d, popped ? %01d", - x, y, time, inputIndex, popped); - } - return popped; -} - float ProximityInfoState::calculateNormalizedSquaredDistance( const int keyIndex, const int inputIndex) const { if (keyIndex == NOT_AN_INDEX) { @@ -809,11 +576,8 @@ bool ProximityInfoState::isKeyInSerchKeysAfterIndex(const int index, const int k } void ProximityInfoState::popInputData() { - mSampledInputXs.pop_back(); - mSampledInputYs.pop_back(); - mTimes.pop_back(); - mLengthCache.pop_back(); - mInputIndice.pop_back(); + ProximityInfoStateUtils::popInputData(&mSampledInputXs, &mSampledInputYs, &mTimes, + &mLengthCache, &mInputIndice); } float ProximityInfoState::getDirection(const int index0, const int index1) const { |