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Standardized decimal places in length converter
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@gabrielmjr
gabrielmjr committed May 7, 2023
1 parent c2952f4 commit 912a8c7
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Showing 2 changed files with 75 additions and 70 deletions.
45 changes: 24 additions & 21 deletions app/src/main/java/com/mjr/code/physic/units/Length.java
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Original file line number Diff line number Diff line change
Expand Up @@ -3,11 +3,14 @@
import java.math.BigDecimal;
import com.mjr.code.physic.PhysicException;

import static com.mjr.code.physic.Physic.ROUND_SCALE;
import static java.math.RoundingMode.HALF_UP;

public class Length extends BigDecimal implements LengthIF {
private static Length instance;
private BigDecimal value;
private int unit;

public static final int KILOMETER = 0;
public static final int HECTOMETER = 1;
public static final int DECAMETER = 2;
Expand All @@ -34,37 +37,37 @@ public class Length extends BigDecimal implements LengthIF {
public static final String DECIMETER_SYMBOL = "dm";
public static final String CENTIMETER_SYMBOL = "cm";
public static final String MILLIMETER_SYMBOL= "mm";

public Length() {
super(0);
value = divide(ONE);
unit = METER;
}

public Length(double value) {
super(value);
this.value = divide(ONE);
unit = METER;
}

public Length(String value) {
super(value);
this.value = divide(ONE);
unit = METER;
}

public Length(long value) {
super(value);
this.value = divide(ONE);
unit = METER;
}

public Length(BigDecimal value) {
super(value.toString());
this.value = value;
unit = METER;
}

public Length(double value, int unit) throws PhysicException {
super(value);
this.value = divide(ONE);
Expand Down Expand Up @@ -94,7 +97,7 @@ public Length(long value, int unit) throws PhysicException {
}
throw new InvalidUnitException("The unit " + unit + " is not valid as " + getClass().getName() + " unit.");
}

public Length(BigDecimal value, int unit) throws PhysicException {
super(value.toString());
if (unit >= 0 && unit <= 6) {
Expand All @@ -103,49 +106,49 @@ public Length(BigDecimal value, int unit) throws PhysicException {
}
throw new InvalidUnitException("The unit " + unit + " is not valid as " + getClass().getName() + " unit");
}

public static Length toKilometer (double value, int unit) throws PhysicException {
if (unit >= 0 && unit <= 6)
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[KILOMETER]), unit);
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[KILOMETER], ROUND_SCALE, HALF_UP), unit);
throw new InvalidUnitException("The unit " + unit + " is not valid as " + new Length().getClass().getName() + " unit.");
}

public static Length toHectometer (double value, int unit) throws PhysicException {
if (unit >= 0 && unit <= 6)
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[HECTOMETER]), unit);
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[HECTOMETER], ROUND_SCALE, HALF_UP), unit);
throw new InvalidUnitException("The unit " + unit + " is not valid as " + new Length().getClass().getName() + " unit.");
}

public static Length toDecameter (double value, int unit) throws PhysicException {
if (unit >= 0 && unit <= 6)
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[DECAMETER]), unit);
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[DECAMETER], ROUND_SCALE, HALF_UP), unit);
throw new InvalidUnitException("The unit " + unit + " is not valid as " + new Length().getClass().getName() + " unit.");
}

public static Length toMeter (double value, int unit) throws PhysicException {
if (unit >= 0 && unit <= 6)
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[METER]), unit);
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[METER], ROUND_SCALE, HALF_UP), unit);
throw new InvalidUnitException("The unit " + unit + " is not valid as " + new Length().getClass().getName() + " unit.");
}

public static Length toDecimeter (double value, int unit) throws PhysicException {
if (unit >= 0 && unit <= 6)
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[DECIMETER]), unit);
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[DECIMETER], ROUND_SCALE, HALF_UP), unit);
throw new InvalidUnitException("The unit " + unit + " is not valid as " + new Length().getClass().getName() + " unit.");
}

public static Length toCentimeter (double value, int unit) throws PhysicException {
if (unit >= 0 && unit <= 6)
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[CENTIMETER]), unit);
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[CENTIMETER], ROUND_SCALE, HALF_UP), unit);
throw new InvalidUnitException("The unit " + unit + " is not valid as " + new Length().getClass().getName() + " unit.");
}

public static Length toMillimeter (double value, int unit) throws PhysicException {
if (unit >= 0 && unit <= 6)
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[MILLIMETER]), unit);
return new Length(BigDecimal.valueOf(value).multiply(LENGTH_SCALES[unit]).divide(LENGTH_SCALES[MILLIMETER], ROUND_SCALE, HALF_UP), unit);
throw new InvalidUnitException("The unit " + unit + " is not valid as " + new Length().getClass().getName() + " unit.");
}

@Override
public Length toKilometer() {
return null;
Expand Down Expand Up @@ -180,7 +183,7 @@ public Length toCentimeter() {
public Length toMillimeter() {
return null;
}

public Length setValue(double value) {
return new Length(value);
}
Expand Down Expand Up @@ -208,7 +211,7 @@ public Length setUnit(int unit) throws PhysicException {
}
throw new InvalidUnitException("The unit " + unit + " is not valid as " + new Length().getClass().getName() + " unit.");
}

protected static Length getInstance () {
if (!(instance instanceof Length))
instance = new Length();
Expand Down
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