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Rename elevation to altitude (without translations).

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Fixes #678.
This commit is contained in:
Dennis Guse
2021-04-02 18:29:05 +02:00
parent e09b04308c
commit bc1b4e3cd2
101 changed files with 893 additions and 934 deletions
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src/main/java/de/dennisguse/opentracks/util/PressureSensorUtils.java
+24 -24
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@@ -4,76 +4,76 @@ import android.hardware.SensorManager;
public class PressureSensorUtils {
//Everything above is considered a meaningful change in elevation.
private static final float ELEVATION_CHANGE_DIFF_M = 3.0f;
//Everything above is considered a meaningful change in altitude.
private static final float ALTITUDE_CHANGE_DIFF_M = 3.0f;
private static final float EXPONENTIAL_SMOOTHING = 0.3f;
private PressureSensorUtils() {
}
public static class ElevationChange {
public static class AltitudeChange {
private final float currentSensorValue_hPa;
private final float elevationChange_m;
private final float altitudeChange_m;
public ElevationChange(float currentSensorValue_hPa, float elevationChange_m) {
public AltitudeChange(float currentSensorValue_hPa, float altitudeChange_m) {
this.currentSensorValue_hPa = currentSensorValue_hPa;
this.elevationChange_m = elevationChange_m;
this.altitudeChange_m = altitudeChange_m;
}
public float getCurrentSensorValue_hPa() {
return currentSensorValue_hPa;
}
public float getElevationChange_m() {
return elevationChange_m;
public float getAltitudeChange_m() {
return altitudeChange_m;
}
public float getElevationGain_m() {
return elevationChange_m > 0 ? elevationChange_m : 0;
public float getAltitudeGain_m() {
return altitudeChange_m > 0 ? altitudeChange_m : 0;
}
public float getElevationLoss_m() {
return elevationChange_m < 0 ? -1 * elevationChange_m : 0;
public float getAltitudeLoss_m() {
return altitudeChange_m < 0 ? -1 * altitudeChange_m : 0;
}
}
/**
* Applies exponential smoothing to sensor value before computation.
*/
public static ElevationChange computeChangesWithSmoothing_m(float lastAcceptedSensorValue_hPa, float lastSeenSensorValue_hPa, float currentSensorValue_hPa) {
public static AltitudeChange computeChangesWithSmoothing_m(float lastAcceptedSensorValue_hPa, float lastSeenSensorValue_hPa, float currentSensorValue_hPa) {
float nextSensorValue_hPa = EXPONENTIAL_SMOOTHING * currentSensorValue_hPa + (1 - EXPONENTIAL_SMOOTHING) * lastSeenSensorValue_hPa;
return computeChanges_m(lastAcceptedSensorValue_hPa, nextSensorValue_hPa);
}
/**
* Computes the elevation gain and elevation loss.
* Computes the altitude gain and altitude loss.
*
* @return null if no meaningful elevation change occurred.
* @return null if no meaningful altitudeC change occurred.
*/
public static ElevationChange computeChanges_m(float lastAcceptedSensorValue_hPa, float currentSensorValue_hPa) {
public static AltitudeChange computeChanges_m(float lastAcceptedSensorValue_hPa, float currentSensorValue_hPa) {
float lastSensorValue_m = SensorManager.getAltitude(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, lastAcceptedSensorValue_hPa);
float currentSensorValue_m = SensorManager.getAltitude(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, currentSensorValue_hPa);
float elevationChange_m = currentSensorValue_m - lastSensorValue_m;
if (Math.abs(elevationChange_m) < ELEVATION_CHANGE_DIFF_M) {
float altitudeChange_m = currentSensorValue_m - lastSensorValue_m;
if (Math.abs(altitudeChange_m) < ALTITUDE_CHANGE_DIFF_M) {
return null;
}
// Limit elevation change by ELEVATION_CHANGE_DIFF and computes pressure value accordingly.
ElevationChange elevationChange = new ElevationChange(currentSensorValue_hPa, elevationChange_m);
if (elevationChange.getElevationChange_m() > 0) {
return new ElevationChange(getBarometricPressure(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, lastSensorValue_m + ELEVATION_CHANGE_DIFF_M), ELEVATION_CHANGE_DIFF_M);
// Limit altitudeC change by ALTITUDE_CHANGE_DIFF and computes pressure value accordingly.
AltitudeChange altitudeChange = new AltitudeChange(currentSensorValue_hPa, altitudeChange_m);
if (altitudeChange.getAltitudeChange_m() > 0) {
return new AltitudeChange(getBarometricPressure(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, lastSensorValue_m + ALTITUDE_CHANGE_DIFF_M), ALTITUDE_CHANGE_DIFF_M);
} else {
return new ElevationChange(getBarometricPressure(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, lastSensorValue_m - ELEVATION_CHANGE_DIFF_M), -1 * ELEVATION_CHANGE_DIFF_M);
return new AltitudeChange(getBarometricPressure(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, lastSensorValue_m - ALTITUDE_CHANGE_DIFF_M), -1 * ALTITUDE_CHANGE_DIFF_M);
}
}
/*
* Barometeric pressure to elevation estimation; inverts of SensorManager.getAltitude(float, float)
* Barometeric pressure to altitude estimation; inverts of SensorManager.getAltitude(float, float)
* https://de.wikipedia.org/wiki/Barometrische_H%C3%B6henformel#Internationale_H%C3%B6henformel
* {\color{White} p(h)} = p_0 \cdot \left( 1 - \frac{0{,}0065 \frac{\mathrm K}{\mathrm m} \cdot h}{T_0\ } \right)^{5{,}255}
*/