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Code Issues Releases Wiki Activity

Add support for visceral fat (#352)

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This commit is contained in:
Erik Johansson
2018-11-20 19:19:10 +01:00
parent afa9d3425e
commit 4943e4b749
1 changed files with 39 additions and 8 deletions
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47
android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothInlife.java
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@@ -46,8 +46,8 @@ public class BluetoothInlife extends BluetoothCommunication {
case MILD:
break;
case MODERATE:
case HEAVY:
return 1;
case HEAVY:
case EXTREME:
return 2;
}
@@ -135,29 +135,30 @@ public class BluetoothInlife extends BluetoothCommunication {
switch (data[1]) {
case (byte) 0x0f:
Timber.d("Scale disconnecting");
return;
break;
case (byte) 0xd8:
float weight = Converters.fromUnsignedInt16Be(data, 2) / 10.0f;
Timber.d("Current weight %.2f kg", weight);
return;
break;
case (byte) 0xdd:
processMeasurementData(data);
break;
case (byte) 0xdf:
Timber.d("Data received by scale: %s", data[2] == 0 ? "OK" : "error");
return;
break;
default:
Timber.d("Unknown command 0x%02x", data[1]);
return;
break;
}
}
void processMeasurementData(byte[] data) {
float weight = Converters.fromUnsignedInt16Be(data, 2) / 10.0f;
float lbm = Converters.fromUnsignedInt24Be(data, 4) / 1000.0f;
// TODO: convert visceral factor to visceral fat
float visceralFactor = Converters.fromUnsignedInt16Be(data, 7) / 10.0f;
float bmr = Converters.fromUnsignedInt16Be(data, 9) / 10.0f;
Timber.d("Weight=%.1f, LBM=%.3f, visceral factor=%.1f, BMR=%.1f",
Timber.d("weight=%.1f, LBM=%.3f, visceral factor=%.1f, BMR=%.1f",
weight, lbm, visceralFactor, bmr);
final ScaleUser selectedUser = OpenScale.getInstance().getSelectedScaleUser();
@@ -178,6 +179,35 @@ public class BluetoothInlife extends BluetoothCommunication {
float muscle = (0.548f * lbm / weight) * 100.0f;
float bone = 0.05158f * lbm;
double visceral;
final float height = selectedUser.getBodyHeight();
if (selectedUser.getGender().isMale()) {
if (height >= 1.6 * weight + 63) {
visceral = (0.765 - 0.002 * height) * (weight - 50) + visceralFactor;
}
else {
visceral = 380 * weight / (((0.0826 * height * height) - 0.4 * height) + 48) - 50 + visceralFactor;
}
}
else {
if (weight <= height / 2 - 13) {
visceral = (0.691 - 0.0024 * height) * (weight - 50) + visceralFactor;
}
else {
visceral = 500 * weight / (((0.1158 * height * height) + 1.45 * height) - 120) - 50 + visceralFactor;
}
}
if (getActivityLevel(selectedUser) != 0) {
if (visceral >= 21) {
visceral *= 0.85;
}
if (visceral >= 10) {
visceral *= 0.8;
}
visceral -= getActivityLevel(selectedUser) * 2;
}
ScaleMeasurement measurement = new ScaleMeasurement();
measurement.setWeight(weight);
measurement.setFat(fat);
@@ -185,6 +215,7 @@ public class BluetoothInlife extends BluetoothCommunication {
measurement.setMuscle(muscle);
measurement.setBone(bone);
measurement.setLbm(lbm);
measurement.setVisceralFat((float) visceral);
addScaleData(measurement);