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::updateNearKeysDistances()
32     static const float NEAR_KEY_THRESHOLD_FOR_DISTANCE;
33 
34     // Used by ProximityInfoStateUtils::isPrevLocalMin()
35     static const float MARGIN_FOR_PREV_LOCAL_MIN;
36 
37     // Used by ProximityInfoStateUtils::getPointScore()
38     static const int DISTANCE_BASE_SCALE;
39     static const float NEAR_KEY_THRESHOLD_FOR_POINT_SCORE;
40     static const int CORNER_CHECK_DISTANCE_THRESHOLD_SCALE;
41     static const float NOT_LOCALMIN_DISTANCE_SCORE;
42     static const float LOCALMIN_DISTANCE_AND_NEAR_TO_KEY_SCORE;
43     static const float CORNER_ANGLE_THRESHOLD_FOR_POINT_SCORE;
44     static const float CORNER_SUM_ANGLE_THRESHOLD;
45     static const float CORNER_SCORE;
46 
47     // Used by ProximityInfoStateUtils::refreshSpeedRates()
48     static const int NUM_POINTS_FOR_SPEED_CALCULATION;
49 
50     // Used by ProximityInfoStateUtils::pushTouchPoint()
51     static const int LAST_POINT_SKIP_DISTANCE_SCALE;
52 
53     // Used by ProximityInfoStateUtils::updateAlignPointProbabilities()
54     static const float MIN_PROBABILITY;
55     static const float MAX_SKIP_PROBABILITY;
56     static const float SKIP_FIRST_POINT_PROBABILITY;
57     static const float SKIP_LAST_POINT_PROBABILITY;
58     static const float MIN_SPEED_RATE_FOR_SKIP_PROBABILITY;
59     static const float SPEED_WEIGHT_FOR_SKIP_PROBABILITY;
60     static const float SLOW_STRAIGHT_WEIGHT_FOR_SKIP_PROBABILITY;
61     static const float NEAREST_DISTANCE_WEIGHT;
62     static const float NEAREST_DISTANCE_BIAS;
63     static const float NEAREST_DISTANCE_WEIGHT_FOR_LAST;
64     static const float NEAREST_DISTANCE_BIAS_FOR_LAST;
65     static const float ANGLE_WEIGHT;
66     static const float DEEP_CORNER_ANGLE_THRESHOLD;
67     static const float SKIP_DEEP_CORNER_PROBABILITY;
68     static const float CORNER_ANGLE_THRESHOLD;
69     static const float STRAIGHT_ANGLE_THRESHOLD;
70     static const float SKIP_CORNER_PROBABILITY;
71     static const float SPEED_MARGIN;
72     static const float CENTER_VALUE_OF_NORMALIZED_DISTRIBUTION;
73     static const float SPEEDxANGLE_WEIGHT_FOR_STANDARD_DEVIATION;
74     static const float MAX_SPEEDxANGLE_RATE_FOR_STANDARD_DEVIATION;
75     static const float SPEEDxNEAREST_WEIGHT_FOR_STANDARD_DEVIATION;
76     static const float MAX_SPEEDxNEAREST_RATE_FOR_STANDARD_DEVIATION;
77     static const float MIN_STANDARD_DEVIATION;
78     // X means gesture's direction. Y means gesture's orthogonal direction.
79     static const float STANDARD_DEVIATION_X_WEIGHT_FOR_FIRST;
80     static const float STANDARD_DEVIATION_Y_WEIGHT_FOR_FIRST;
81     static const float STANDARD_DEVIATION_X_WEIGHT_FOR_LAST;
82     static const float STANDARD_DEVIATION_Y_WEIGHT_FOR_LAST;
83     static const float STANDARD_DEVIATION_X_WEIGHT;
84     static const float STANDARD_DEVIATION_Y_WEIGHT;
85 
86     // Used by ProximityInfoStateUtils::suppressCharProbabilities()
87     static const float SUPPRESSION_LENGTH_WEIGHT;
88     static const float MIN_SUPPRESSION_RATE;
89     static const float SUPPRESSION_WEIGHT;
90     static const float SUPPRESSION_WEIGHT_FOR_PROBABILITY_GAIN;
91     static const float SKIP_PROBABALITY_WEIGHT_FOR_PROBABILITY_GAIN;
92 
93     // Used by ProximityInfoStateUtils::getMostProbableString()
94     static const float DEMOTION_LOG_PROBABILITY;
95 
96     // Used by ProximityInfoStateUtils::updateSampledSearchKeySets()
97     static const float SEARCH_KEY_RADIUS_RATIO;
98 
99     // Used by ProximityInfoStateUtils::calculateBeelineSpeedRate()
100     static const int LOOKUP_RADIUS_PERCENTILE;
101     static const int FIRST_POINT_TIME_OFFSET_MILLIS;
102     static const int STRONG_DOUBLE_LETTER_TIME_MILLIS;
103 
104     // Used by ProximityInfoStateUtils::calculateNormalizedSquaredDistance()
105     static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR;
106 
107  private:
108     DISALLOW_IMPLICIT_CONSTRUCTORS(ProximityInfoParams);
109 };
110 } // namespace latinime
111 #endif // LATINIME_PROXIMITY_INFO_PARAMS_H
112