package com.example.compass;

import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;

public class MainActivity extends AppCompatActivity implements SensorEventListener {
    private ImageView iv_dial; //imageview c картинкой компаса
    private TextView tv_degree;
    private float CurrentDegree = 0f; //текущее отклонение в градусах
    private SensorManager sensorManager;
    Sensor accelerometer;
    Sensor magnetometer;





    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        sensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
        accelerometer = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        magnetometer = sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
        init();


    }
    private void init()
    {
        iv_dial = findViewById(R.id.iv_dial);
        tv_degree = findViewById(R.id.tv_degree);
        sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

    }

    @Override
    protected void onResume() {
        super.onResume();
        sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_UI);
        sensorManager.registerListener(this, magnetometer, SensorManager.SENSOR_DELAY_UI);

    }

    @Override
    protected void onPause() {
        super.onPause();
        sensorManager.unregisterListener(this);
    }

    @SuppressLint("SetTextI18n")
    @Override
    public void onSensorChanged(SensorEvent event) {
        float degree = Math.round(event.values[0]);

        tv_degree.setText("Degree from North: " + degree + " degrees");

        RotateAnimation ra = new RotateAnimation(CurrentDegree, -degree,
                Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,  0.5f);

        ra.setDuration(210);
        ra.setFillAfter(true);
        iv_dial.startAnimation(ra);
        CurrentDegree = -degree;


    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {

    }
}