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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.incallui.answer.impl.classifier;
import java.util.ArrayList;
/**
* Contains data about a stroke (a single trace, all the events from a given id from the
* DOWN/POINTER_DOWN event till the UP/POINTER_UP/CANCEL event.)
*/
class Stroke {
private static final float NANOS_TO_SECONDS = 1e9f;
private ArrayList<Point> points = new ArrayList<>();
private long startTimeNano;
private long endTimeNano;
private float length;
private final float dpi;
public Stroke(long eventTimeNano, float dpi) {
this.dpi = dpi;
startTimeNano = endTimeNano = eventTimeNano;
}
public void addPoint(float x, float y, long eventTimeNano) {
endTimeNano = eventTimeNano;
Point point = new Point(x / dpi, y / dpi, eventTimeNano - startTimeNano);
if (!points.isEmpty()) {
length += points.get(points.size() - 1).dist(point);
}
points.add(point);
}
public int getCount() {
return points.size();
}
public float getTotalLength() {
return length;
}
public float getEndPointLength() {
return points.get(0).dist(points.get(points.size() - 1));
}
public long getDurationNanos() {
return endTimeNano - startTimeNano;
}
public float getDurationSeconds() {
return (float) getDurationNanos() / NANOS_TO_SECONDS;
}
public ArrayList<Point> getPoints() {
return points;
}
}
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