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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef LATINIME_PROXIMITY_INFO_PARAMS_H
     18 #define LATINIME_PROXIMITY_INFO_PARAMS_H
     19 
     20 #include "defines.h"
     21 
     22 namespace latinime {
     23 
     24 class ProximityInfoParams {
     25  public:
     26     static const float NOT_A_DISTANCE_FLOAT;
     27     static const int MIN_DOUBLE_LETTER_BEELINE_SPEED_PERCENTILE;
     28     static const float VERTICAL_SWEET_SPOT_SCALE;
     29     static const float VERTICAL_SWEET_SPOT_SCALE_G;
     30 
     31     // Used by ProximityInfoStateUtils::initGeometricDistanceInfos()
     32     static const float NEAR_KEY_NORMALIZED_SQUARED_THRESHOLD;
     33 
     34     // Used by ProximityInfoStateUtils::updateNearKeysDistances()
     35     static const float NEAR_KEY_THRESHOLD_FOR_DISTANCE;
     36 
     37     // Used by ProximityInfoStateUtils::isPrevLocalMin()
     38     static const float MARGIN_FOR_PREV_LOCAL_MIN;
     39 
     40     // Used by ProximityInfoStateUtils::getPointScore()
     41     static const int DISTANCE_BASE_SCALE;
     42     static const float NEAR_KEY_THRESHOLD_FOR_POINT_SCORE;
     43     static const int CORNER_CHECK_DISTANCE_THRESHOLD_SCALE;
     44     static const float NOT_LOCALMIN_DISTANCE_SCORE;
     45     static const float LOCALMIN_DISTANCE_AND_NEAR_TO_KEY_SCORE;
     46     static const float CORNER_ANGLE_THRESHOLD_FOR_POINT_SCORE;
     47     static const float CORNER_SUM_ANGLE_THRESHOLD;
     48     static const float CORNER_SCORE;
     49 
     50     // Used by ProximityInfoStateUtils::refreshSpeedRates()
     51     static const int NUM_POINTS_FOR_SPEED_CALCULATION;
     52 
     53     // Used by ProximityInfoStateUtils::pushTouchPoint()
     54     static const int LAST_POINT_SKIP_DISTANCE_SCALE;
     55 
     56     // Used by ProximityInfoStateUtils::updateAlignPointProbabilities()
     57     static const float MIN_PROBABILITY;
     58     static const float MAX_SKIP_PROBABILITY;
     59     static const float SKIP_FIRST_POINT_PROBABILITY;
     60     static const float SKIP_LAST_POINT_PROBABILITY;
     61     static const float MIN_SPEED_RATE_FOR_SKIP_PROBABILITY;
     62     static const float SPEED_WEIGHT_FOR_SKIP_PROBABILITY;
     63     static const float SLOW_STRAIGHT_WEIGHT_FOR_SKIP_PROBABILITY;
     64     static const float NEAREST_DISTANCE_WEIGHT;
     65     static const float NEAREST_DISTANCE_BIAS;
     66     static const float NEAREST_DISTANCE_WEIGHT_FOR_LAST;
     67     static const float NEAREST_DISTANCE_BIAS_FOR_LAST;
     68     static const float ANGLE_WEIGHT;
     69     static const float DEEP_CORNER_ANGLE_THRESHOLD;
     70     static const float SKIP_DEEP_CORNER_PROBABILITY;
     71     static const float CORNER_ANGLE_THRESHOLD;
     72     static const float STRAIGHT_ANGLE_THRESHOLD;
     73     static const float SKIP_CORNER_PROBABILITY;
     74     static const float SPEED_MARGIN;
     75     static const float CENTER_VALUE_OF_NORMALIZED_DISTRIBUTION;
     76     static const float SPEEDxANGLE_WEIGHT_FOR_STANDARD_DEVIATION;
     77     static const float MAX_SPEEDxANGLE_RATE_FOR_STANDARD_DEVIATION;
     78     static const float SPEEDxNEAREST_WEIGHT_FOR_STANDARD_DEVIATION;
     79     static const float MAX_SPEEDxNEAREST_RATE_FOR_STANDARD_DEVIATION;
     80     static const float MIN_STANDARD_DEVIATION;
     81     static const float PREV_DISTANCE_WEIGHT;
     82     static const float NEXT_DISTANCE_WEIGHT;
     83 
     84     // Used by ProximityInfoStateUtils::suppressCharProbabilities()
     85     static const float SUPPRESSION_LENGTH_WEIGHT;
     86     static const float MIN_SUPPRESSION_RATE;
     87     static const float SUPPRESSION_WEIGHT;
     88     static const float SUPPRESSION_WEIGHT_FOR_PROBABILITY_GAIN;
     89     static const float SKIP_PROBABALITY_WEIGHT_FOR_PROBABILITY_GAIN;
     90 
     91     // Used by ProximityInfoStateUtils::getMostProbableString()
     92     static const float DEMOTION_LOG_PROBABILITY;
     93 
     94     // Used by ProximityInfoStateUtils::updateSampledSearchKeySets()
     95     static const float SEARCH_KEY_RADIUS_RATIO;
     96 
     97     // Used by ProximityInfoStateUtils::calculateBeelineSpeedRate()
     98     static const int LOOKUP_RADIUS_PERCENTILE;
     99     static const int FIRST_POINT_TIME_OFFSET_MILLIS;
    100     static const int STRONG_DOUBLE_LETTER_TIME_MILLIS;
    101 
    102     // Used by ProximityInfoStateUtils::calculateNormalizedSquaredDistance()
    103     static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR;
    104 
    105  private:
    106     DISALLOW_IMPLICIT_CONSTRUCTORS(ProximityInfoParams);
    107 };
    108 } // namespace latinime
    109 #endif // LATINIME_PROXIMITY_INFO_PARAMS_H
    110