Examples of javax.measure.converter.UnitConverter

javax.measure.converter.UnitConverter

    }


    public static double convert(GeometryDescriptor descriptor, double distance, String unit) {
        Unit<?> fromUnit = Unit.valueOf(unit);
        Unit<?> toUnit = getUnit(descriptor);
        UnitConverter c = fromUnit.getConverterTo(toUnit);
        return c.convert(distance);


    }

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                if (Utilities.equals(sourceUnit, targetUnit)) {
                    // There is no units conversion to apply
                    // between source[i] and target[j].
                    continue;
                }
                final UnitConverter converter = sourceUnit.getConverterTo(targetUnit);
                if (!converter.isLinear()) {
                    throw new ConversionException(Errors.format(
                              ErrorKeys.NON_LINEAR_UNIT_CONVERSION_$2, sourceUnit, targetUnit));
                }
                final double offset = converter.convert(0);
// JSR-275      final double scale  = converter.derivative(0);
                final double scale  = converter.convert(1) - offset;
                matrix.setElement(j,i, element*scale);
                matrix.setElement(j,sourceDim, matrix.getElement(j,sourceDim) + element*offset);
            }
        }
        return matrix;

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            for (int i=0; i<axis.length; i++) {
                final Unit<?> candidate = axis[i].getUnit();
                if (candidate!=null && !candidate.isCompatible(SI.RADIAN)) {
                    // TODO: checks the unit scale type (keeps RATIO only).
                    if (unit != null) {
                        final UnitConverter converter = candidate.getConverterTo(unit);
                        if (!converter.isLinear()) {
                            // TODO: use the localization provided in 'swapAxis'. We could also
                            //       do a more intelligent work by checking the unit scale type.
                            throw new ConversionException("Unit conversion is non-linear");
                        }
// JSR-275              final double scale = converter.derivative(0);
                        final double scale = converter.convert(1) - converter.convert(0);
                        if (Math.abs(scale) <= 1) {
                            // The candidate is a "smaller" unit than the current one
                            // (e.g. "m" instead of "km"). Keeps the "largest" unit.
                            continue;
                        }

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        this.unit         = unit;
        ensureNonNull("abbreviation", abbreviation);
        ensureNonNull("direction",    direction);
        ensureNonNull("unit",         unit);
        if (unit.isCompatible(NonSI.DEGREE_ANGLE)) {
            final UnitConverter fromDegrees = NonSI.DEGREE_ANGLE.getConverterTo(unit);
            final AxisDirection dir = direction.absolute();
            if (dir.equals(AxisDirection.NORTH)) {
                final double range = Math.abs(fromDegrees.convert(90));
                minimum = -range;
                maximum = +range;
                rangeMeaning = RangeMeaning.EXACT; // 90°N do not wraps to 90°S
                return;
            }
            if (dir.equals(AxisDirection.EAST)) {
                final double range = Math.abs(fromDegrees.convert(180));
                minimum = -range;
                maximum = +range;
                rangeMeaning = RangeMeaning.WRAPAROUND; // 180°E wraps to 180°W
                return;
            }

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            }
            this.converters = converters;
        }
        double sum = 0;
        for (int i=0; i<converters.length; i++) {
            final UnitConverter  c = converters[i];
            final double delta = c.convert(coord1[i]) - c.convert(coord2[i]);
            sum += delta*delta;
        }
        return new Measure(Math.sqrt(sum), unit);
    }

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                               final double  semiMinor,
                               final Unit<Length> units,
                               final boolean hasHeight)
    {
        this.hasHeight = hasHeight;
        final UnitConverter converter = units.getConverterTo(SI.METER);
        a   = converter.convert(semiMajor);
        b   = converter.convert(semiMinor);
        a2  = a*a;
        b2  = b*b;
        e2  = (a2 - b2) / a2;
        ep2 = (a2 - b2) / b2;
        checkArgument("a", a, Double.MAX_VALUE);

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        final Unit xUnit = getDirectedAxisUnit(cs, AxisDirection.EAST);
        final int yIndex = getDirectedAxisIndex(cs, AxisDirection.NORTH);
        final Unit yUnit = getDirectedAxisUnit(cs, AxisDirection.NORTH);
        
        //edited to use javax.measure.unit.Convertor
        UnitConverter xConverter = xUnit.getConverterTo(unit);
        UnitConverter yConverter = yUnit.getConverterTo(unit);
        
        returnable[0] = xConverter.convert(lowerCorner.getOrdinate(xIndex));
        returnable[1] = yConverter.convert(lowerCorner.getOrdinate(yIndex));
        returnable[2] = xConverter.convert(upperCorner.getOrdinate(xIndex));
        returnable[3] = yConverter.convert(upperCorner.getOrdinate(yIndex));
        
        return returnable;
    }

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        /*int[] indices = CSUtils.getDirectedAxisIndices(
                crs.getCoordinateSystem(), 
                new AxisDirection[] { AxisDirection.EAST, AxisDirection.NORTH });*/
        
        //edited to use javax.measure.unit.Convertor
        UnitConverter xConverter = xUnit.getConverterTo(unit);
        UnitConverter yConverter = yUnit.getConverterTo(unit);
        
        double[] lowerOrdinates = new double[crs.getCoordinateSystem().getDimension()];
        lowerOrdinates[xIndex] = xConverter.convert(minx);
        lowerOrdinates[yIndex] = yConverter.convert(miny);
        
        /*for (int i = 0; i < lowerOrdinates.length; i++) {
            // the east or x ordinate
            if (i == indices[0]) {
                lowerOrdinates[i] = minx;
            // the north or y ordinate    
            } else if (i == indices[1]) {
                lowerOrdinates[i] = miny;
            } else {
                lowerOrdinates[i] = 0;
            }
        }*/
        double[] upperOrdinates = new double[crs.getCoordinateSystem().getDimension()];
        upperOrdinates[xIndex] = xConverter.convert(maxx);
        upperOrdinates[yIndex] = yConverter.convert(maxy);
        
        /*for (int i = 0; i < upperOrdinates.length; i++) {
            // the east or x ordinate
            if (i == indices[0]) {
                upperOrdinates[i] = maxx;

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        if(uom == SI.METER) {
            return mapScale;
        }


        // converts value from meters to given UOM
        UnitConverter converter = uom.getConverterTo(SI.METER);
        return converter.convert(mapScale);
    }

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    /**
     * On deserialization, returns an existing instance.
     */
    protected Object readResolve() throws ObjectStreamException {
        UnitConverter candidate = INTEGER;
        for (int i=0; i<=3; i++) {
            switch (i) {
                case 0:  break; // Do nothing since candidate is already set to INTEGER/
                case 2:  candidate = FRACTIONAL; break;
                default: candidate = candidate.inverse(); break;
            }
            if (equals(candidate)) {
                return candidate;
            }
        }

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